Advanced Configuration Guide - Hewlett Packardh20628. · Advanced Configuration and Management...

advancedconfiguration and

management guide

www.hp.com/go/hpprocurve

hp procurve routing switches9304m, 9308m, and 9315m

(software release07.6.04 or greater)

Advanced Configuration and

Management Guide

for the HP ProCurve Routing Switches

9304M, 9308M, and 9315M

(Software Release 07.6.04 or Greater)

Copyright 2000, 2003 Hewlett-Packard Company, LP. The information contained herein is subject to change without notice.

Publication number

5990-6030

September 2003

Applicable Products

HP ProCurve 9304M (J4139A)



Trademark Credits

Microsoft®, Windows®, and Windows NT® are U.S. registered trademarks of Microsoft Corporation.

Adobe® and Acrobat® are trademarks of Adobe Systems Incorporated.

Disclaimer

The information contained in this document is subject to change without notice.

HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material.

The only warranties for HP products and services are set forth in the express Warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Hewlett-Packard assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Hewlett-Packard.

Warranty

See the Customer Support and Warranty booklet included with the product.

A copy of the specific warranty terms applicable to your Hewlett-Packard product and replacement parts can be obtained from your HP Sales and Service Office or authorized dealer.

Safety Considerations

Prior to the installation and use of this product, review all safety markings and instructions.

Instruction Manual Symbol.

If the product is marked with the above symbol, refer to the product manual to protect the product from damage.

WARNING Denotes a hazard that can cause injury.

CAUTION Denotes a hazard that can damage equipment or data.

Do not proceed beyond a WARNING or CAUTION notice until you have understood the hazard and have taken appropriate precautions.

Use of control, adjustments or performance procedures other than those specified herein may result in hazardous radiation exposure.

Grounding

This product provides a protective earthing terminal. There must be an uninterrupted safety earth ground from the main power source to the product’s input wiring terminals, power cord or supplied power cord set. Whenever it is likely that the protection has been impaired, disconnect the power cord until the ground has been restored.

If your LAN covers an area served by more than one power distribution system, be sure their safety grounds are securely interconnected.

LAN cables may occasionally be subject to hazardous transient voltages (such as lightning or disturbances in the electrical utilities power grid). Handle exposed metal components of the network with caution.

For more safety information, see the Installation and Basic Configuration Guide and the Quick Start Guide for your HP 9300M Routing Switch Product.

Servicing

There are no user-serviceable parts inside the userinstallable modules comprising the product. Any servicing, adjustment, maintenance or repair must be performed only by service-trained personnel.

ii

Contents

ORGANIZATION OF PRODUCT DOCUMENTATION .......................................... xxv

CHAPTER 1

GETTING STARTED...................................................................................... 1-1

INTRODUCTION ...........................................................................................................................................1-1

AUDIENCE ..................................................................................................................................................1-1

CONVENTIONS ............................................................................................................................................1-1

TERMINOLOGY ............................................................................................................................................1-2

WHAT’S NEW IN THIS EDITION? ...................................................................................................................1-2

STANDARD MODULE AND EP MODULE SUPPORT ...................................................................................1-2

NEW HARDWARE ..................................................................................................................................1-2

LAYER 3 ENHANCEMENTS .....................................................................................................................1-3

LAYER 2 ENHANCEMENTS .....................................................................................................................1-3

SYSTEM-LEVEL ENHANCEMENTS ...........................................................................................................1-4

SUPPORT AND WARRANTY INFORMATION .....................................................................................................1-5

RELATED PUBLICATIONS .............................................................................................................................1-5

CHAPTER 2

CONFIGURING QUALITY OF SERVICE............................................................ 2-1

THE QUEUES ..............................................................................................................................................2-1

AUTOMATIC QUEUE MAPPING FOR IP TYPE OF SERVICE (TOS) VALUES ...............................................2-2

QUEUING METHODS ....................................................................................................................................2-2

SELECTING THE QUEUING METHOD .......................................................................................................2-3

CONFIGURING THE QUEUES ..................................................................................................................2-3

RENAMING THE QUEUES ................................................................................................................ 2-3

CHANGING THE MINIMUM BANDWIDTH PERCENTAGES OF THE QUEUES............................................ 2-4

RESETTING THE MINIMUM BANDWIDTH PERCENTAGES TO THEIR DEFAULTS..................................... 2-9

DISPLAYING THE QOS PROFILE CONFIGURATION .........................................................................................2-9

ASSIGNING QOS PRIORITIES TO TRAFFIC ..................................................................................................2-10

CHANGING A PORT’S PRIORITY ...........................................................................................................2-10

iii

Advanced Configuration Guide

CHANGING A LAYER 2 PORT-BASED VLAN’S PRIORITY .......................................................................2-11

REASSIGNING 802.1P PRIORITIES TO DIFFERENT QUEUES ...................................................................2-13

DISPLAYING THE QUEUE ASSIGNMENTS FOR THE 802.1P PRIORITIES ............................................ 2-14

ASSIGNING STATIC MAC ENTRIES TO PRIORITY QUEUES ....................................................................2-15

ASSIGNING IP AND LAYER 4 SESSIONS TO PRIORITY QUEUES .............................................................2-16

ROUTING SWITCH SYNTAX ........................................................................................................... 2-16

ASSIGNING APPLETALK SOCKETS TO PRIORITY QUEUES .....................................................................2-20

CONFIGURING A UTILIZATION LIST FOR AN UPLINK PORT ............................................................................2-21

DISPLAYING UTILIZATION PERCENTAGES FOR AN UPLINK .....................................................................2-22

CHAPTER 3

ENHANCED QOS......................................................................................... 3-1

BASIC AND ADVANCED TOS-BASED QOS ....................................................................................................3-1

QOS SUPPORT WHEN IP TOS-BASED QOS IS DISABLED .............................................................................3-2

CLASSIFICATION, MARKING, AND SCHEDULING .............................................................................................3-2

CLASSIFICATION ...................................................................................................................................3-2

MARKING .............................................................................................................................................3-2

SCHEDULING ........................................................................................................................................3-3

DEFAULT QOS MAPPINGS ....................................................................................................................3-3

DEFAULT COS –> DSCP MAPPINGS.............................................................................................. 3-3

DEFAULT IP PRECEDENCE –> DSCP MAPPINGS ............................................................................ 3-4

DEFAULT DSCP –> DSCP MAPPINGS ........................................................................................... 3-4

DEFAULT DSCP –> INTERNAL FORWARDING PRIORITY MAPPINGS .................................................. 3-4

LAYER 4 CAM USAGE ................................................................................................................................3-5

USING ACLS, PBR, OR NAT AND IP TOS-BASED QOS ...............................................................................3-5

NOTE REGARDING DSCP PROCESSING FOR TRAFFIC FORWARDED BY THE CPU .........................................3-5

ALTERNATIVE QOS METHODS .....................................................................................................................3-5

CONFIGURING TOS-BASED QOS .................................................................................................................3-6

ENABLING ADVANCED TOS-BASED QOS ...............................................................................................3-6

SPECIFYING THE TRUST LEVEL .............................................................................................................3-7

CHANGING THE QOS MAPPINGS ...........................................................................................................3-7

CHANGING THE COS –> DSCP MAPPINGS..................................................................................... 3-7

CHANGING THE IP PRECEDENCE –> DSCP MAPPINGS ................................................................... 3-8

CHANGING THE DSCP –> DSCP MAPPINGS .................................................................................. 3-8

CHANGING THE DSCP –> INTERNAL FORWARDING PRIORITY MAPPINGS ......................................... 3-8

CHANGING THE INTERNAL FORWARDING PRIORITY –> HARDWARE

FORWARDING QUEUE MAPPINGS............................................................................................... 3-9

DISPLAYING CONFIGURATION INFORMATION ...............................................................................................3-10

CHAPTER 4

IP ACCESS CONTROL LISTS (ACLS) ........................................................... 4-1

OVERVIEW ..................................................................................................................................................4-2

HOW FLOW-BASED ACLS WORK ..........................................................................................................4-3

HOW FRAGMENTED PACKETS ARE PROCESSED .............................................................................. 4-3

HARDWARE AGING OF LAYER 4 CAM ENTRIES FOR FLOW-BASED ACLS......................................... 4-4

TYPES OF IP ACLS ..............................................................................................................................4-4

ACL IDS AND ENTRIES .........................................................................................................................4-4

DEFAULT ACL ACTION .........................................................................................................................4-5

iv

Contents

CONTROLLING MANAGEMENT ACCESS TO THE DEVICE ..........................................................................4-5

ACL LOGGING .....................................................................................................................................4-5

USAGE GUIDELINES FOR ACCESS CONTROL LISTS (ACLS) ..........................................................................4-5

USING ACLS AS INPUT TO OTHER FEATURES .......................................................................................4-6

USING ACLS AND NETWORK ADDRESS TRANSLATION (NAT) ON THE SAME INTERFACE .........................4-6

REQUIREMENT FOR APPLYING ACL CONFIGURATION CHANGES ...................................................................4-7

REAPPLYING MODIFIED ACLS ...............................................................................................................4-7

DISABLING OR RE-ENABLING ACCESS CONTROL LISTS (ACLS) ....................................................................4-7

ENABLING ACL MODE ..........................................................................................................................4-7

DISABLING ACL MODE .........................................................................................................................4-8

CONFIGURING STANDARD ACLS .................................................................................................................4-9

STANDARD ACL SYNTAX ......................................................................................................................4-9

CONFIGURING EXTENDED ACLS ................................................................................................................4-12

FILTERING ON IP PRECEDENCE AND TOS VALUES ...............................................................................4-14

EXTENDED ACL SYNTAX ....................................................................................................................4-15

CONFIGURING NAMED ACLS .....................................................................................................................4-22

ADDING A COMMENT TO AN ACL ENTRY .............................................................................................4-23

REAPPLYING ACLS TO INTERFACES ..........................................................................................................4-25

MODIFYING ACLS .....................................................................................................................................4-25

DROPPING ALL FRAGMENTS THAT EXACTLY MATCH AN ACL .....................................................................4-27

ENABLING HARDWARE FILTERING FOR PACKETS DENIED BY ACLS .............................................................4-27

ENABLING ICMP UNREACHABLE MESSAGES FOR TRAFFIC DENIED BY ACLS ..............................................4-27

ACL FILTERING FOR TRAFFIC SWITCHED WITHIN A VIRTUAL ROUTING INTERFACE ......................................4-28

APPLYING AN ACL TO A SUBSET OF PORTS ON A VIRTUAL INTERFACE .......................................................4-28

ENABLING STRICT TCP OR UDP MODE ....................................................................................................4-28

ENABLING STRICT TCP MODE ............................................................................................................4-29

ENABLING STRICT UDP MODE ...........................................................................................................4-30

CONFIGURING ACL PACKET AND FLOW COUNTERS .............................................................................4-30

USING ACLS TO FILTER ARP PACKETS ....................................................................................................4-31

CONFIGURING ACLS FOR ARP FILTERING ..........................................................................................4-31

DISPLAYING ACLS ....................................................................................................................................4-32

DISPLAYING ACL LOG ENTRIES ................................................................................................................4-33

CONFIGURING THE LAYER 4 SESSION LOG TIMER ...............................................................................4-34

DISPLAYING AND CLEARING FLOW-BASED ACL STATISTICS .......................................................................4-34

DISPLAYING ACL STATISTICS FOR FLOW-BASED ACLS .......................................................................4-34

CLEARING FLOW-BASED ACL STATISTICS ...........................................................................................4-35

DISPLAYING AND CLEARING ACL FILTERS FOR ARP ..................................................................................4-35

DISPLAYING ACL FILTERS FOR ARP ...................................................................................................4-35

CLEARING FILTER COUNT ...................................................................................................................4-35

POLICY-BASED ROUTING (PBR) ................................................................................................................4-35

CONFIGURING PBR ............................................................................................................................4-36

CONFIGURE THE ACLS ................................................................................................................ 4-36

CONFIGURE THE ROUTE MAP....................................................................................................... 4-37

ENABLING PBR ..................................................................................................................................4-38

ENABLING PBR GLOBALLY........................................................................................................... 4-38

ENABLING PBR LOCALLY............................................................................................................. 4-38

CONFIGURATION EXAMPLES ...............................................................................................................4-38

v


SETTING THE NEXT HOP .............................................................................................................. 4-39

SETTING THE NEXT HOP WHEN NO NEXT HOP IS EXPLICITLY CONFIGURED................................... 4-40

SETTING THE OUTPUT INTERFACE TO THE NULL INTERFACE.......................................................... 4-40

CHAPTER 5

EP HARDWARE-BASED

IP ACCESS CONTROL LISTS (ACLS) ........................................................... 5-1

OVERVIEW ..................................................................................................................................................5-1

COMPARISON OF FLOW-BASED ACLS AND HARDWARE-BASED ACLS ...........................................................5-2

HOW FLOW-BASED ACLS WORK ..........................................................................................................5-2

HOW HARDWARE-BASED ACLS WORK .................................................................................................5-2

HOW FRAGMENTED PACKETS ARE PROCESSED .....................................................................................5-3

HARDWARE AGING OF LAYER 4 CAM ENTRIES FOR FLOW-BASED ACLS ...............................................5-4

REQUIREMENT FOR APPLYING ACL CONFIGURATION CHANGES ...................................................................5-4

REAPPLYING MODIFIED ACLS ...............................................................................................................5-4

CONFIGURATION CONSIDERATIONS .............................................................................................................5-4

DISABLING OR RE-ENABLING HARDWARE-BASED ACLS ...............................................................................5-6

SYSLOG MESSAGE FOR CHANGED ACL MODE ......................................................................................5-6

GLOBALLY DISABLING ACL LOGGING ..........................................................................................................5-7

COPYING DENIED TRAFFIC TO A MIRROR PORT FOR MONITORING .........................................................5-7

REAPPLYING ACLS TO INTERFACES ............................................................................................................5-7

SPECIFYING THE MAXIMUM NUMBER OF CAM ENTRIES FOR ACLS ..............................................................5-8

ENABLING ACL FILTERING OF FRAGMENTED PACKETS .................................................................................5-8

THROTTLING THE FRAGMENT RATE .......................................................................................................5-9

CONFIGURING AND APPLYING AN ACL .......................................................................................................5-10

STANDARD ACL SYNTAX ....................................................................................................................5-10

EXTENDED ACL SYNTAX ....................................................................................................................5-10

QOS OPTIONS FOR IP ACLS ..............................................................................................................5-11

USING AN ACL TO CHANGE THE FORWARDING QUEUE ................................................................. 5-11

MATCHING ON A PACKET’S 802.1P VALUE.................................................................................... 5-12

MATCHING ON A PACKET’S DSCP VALUE..................................................................................... 5-12

USING AN IP ACL TO MARK TOS VALUES .................................................................................... 5-12

ACL FILTERING FOR TRAFFIC SWITCHED WITHIN A VIRTUAL ROUTING INTERFACE ......................................5-13

DISPLAYING ACL INFORMATION ................................................................................................................5-13

TROUBLESHOOTING HARDWARE-BASED ACLS ...........................................................................................5-13

HARDWARE-BASED POLICY-BASED ROUTING (PBR) ..................................................................................5-14

NEXT HOP SELECTION................................................................................................................. 5-14

CONFIGURATION CONSIDERATIONS............................................................................................... 5-14

CONFIGURING A PBR POLICY ...................................................................................................... 5-14

CONFIGURATION EXAMPLES ......................................................................................................... 5-15

USING THE MOST DIRECT ROUTE................................................................................................. 5-15

ENABLING PBR FOR FRAGMENTED PACKETS................................................................................ 5-15

PBR SYNTAX .............................................................................................................................. 5-16

CHAPTER 6

CONFIGURING RATE LIMITING...................................................................... 6-1

ADDITIONAL NOTES ....................................................................................................................... 6-2

FIXED RATE LIMITING ..................................................................................................................................6-2

vi

Contents

HOW FIXED RATE LIMITING WORKS ......................................................................................................6-2

CONFIGURING FIXED RATE LIMITING .....................................................................................................6-3

DISPLAYING FIXED RATE LIMITING INFORMATION ...................................................................................6-4

ADAPTIVE RATE LIMITING ............................................................................................................................6-4

EXAMPLES OF ADAPTIVE RATE LIMITING APPLICATIONS .........................................................................6-5

ADAPTIVE RATE POLICIES FOR AN UPLINK...................................................................................... 6-5

ADAPTIVE RATE POLICY FOR A SPECIFIC MAC ADDRESS................................................................ 6-7

ADAPTIVE RATE POLICY FOR A PORT-BASED VLAN ....................................................................... 6-8

ADAPTIVE RATE LIMITING PARAMETERS ................................................................................................6-9

AVERAGE RATE ........................................................................................................................... 6-10

NORMAL BURST SIZE................................................................................................................... 6-10

EXCESS BURST SIZE ................................................................................................................... 6-10

COMMITTED TIME INTERVAL ......................................................................................................... 6-10

HOW ADAPTIVE RATE LIMITING WORKS ..............................................................................................6-11

NORMAL BURST SIZE AND EXCESS BURST SIZE COUNTERS.......................................................... 6-11

COMMITTED TIME INTERVAL ......................................................................................................... 6-14

CONFIGURING ADAPTIVE RATE LIMITING .............................................................................................6-14

CHARACTERIZING THE TRAFFIC .................................................................................................... 6-15

SPECIFYING THE BANDWIDTH ALLOWANCES AND APPLYING RATE

POLICY RULES TO AN INTERFACE ............................................................................................ 6-17

CONFIGURING PORT-, VLAN- AND DIRECTION-BASED RATE LIMITING (T-FLOW ONLY) ..........................6-19

CONFIGURATION CONSIDERATIONS............................................................................................... 6-19

CONFIGURING A PORT-, VLAN-, AND DIRECTION-BASED RATE LIMITING POLICY............................ 6-19

DISPLAYING CONFIGURATION INFORMATION AND STATISTICS ...............................................................6-21

CLEARING ADAPTIVE RATE LIMITING STATISTICS .................................................................................6-21

COMPLETE CLI EXAMPLES .................................................................................................................6-22

COMMANDS FOR “ADAPTIVE RATE POLICIES FOR AN UPLINK” ....................................................... 6-22

COMMANDS FOR “ADAPTIVE RATE POLICY FOR A SPECIFIC MAC ADDRESS” ................................. 6-23

COMMANDS FOR “ADAPTIVE RATE POLICY FOR A PORT-BASED VLAN” ......................................... 6-23

DISABLING RATE LIMITING EXEMPTION FOR CONTROL PACKETS ..........................................................6-23

USING A RATE LIMITING ACL TO DENY TRAFFIC .................................................................................6-24

CHAPTER 7

EP ADAPTIVE RATE LIMITING...................................................................... 7-1

OVERVIEW ..................................................................................................................................................7-1

EP RATE LIMITING SUPPORT ................................................................................................................7-2

ADDITIONAL NOTES ....................................................................................................................... 7-2

RATE LIMITING ALGORITHM AND PARAMETERS ......................................................................................7-2

AVERAGE RATE ............................................................................................................................. 7-3

CREDITS ....................................................................................................................................... 7-3

RATE LIMITING INTERVAL ............................................................................................................... 7-3

RATE LIMITING OF CONTROL PACKETS ..................................................................................................7-4

CONFIGURATION CONSIDERATIONS .......................................................................................................7-4

CONFIGURING EP ADAPTIVE RATE LIMITING ..........................................................................................7-5

CONFIGURING A PORT-BASED RATE LIMITING POLICY..................................................................... 7-5

CONFIGURING A PORT-AND-PRIORITY-BASED RATE LIMITING POLICY .............................................. 7-6

CONFIGURING AN ACL-BASED RATE LIMITING POLICY .................................................................... 7-6

RATE LIMITING SYNTAX.................................................................................................................. 7-7

USING ACLS FOR FILTERING IN ADDITION TO RATE LIMITING .................................................................7-7

vii


DISPLAYING RATE LIMITING INFORMATION .............................................................................................7-8

DISPLAYING THE POLICIES ............................................................................................................. 7-9

DISPLAYING ADJUSTED AVERAGE RATES...................................................................................... 7-11

CHAPTER 8

CONFIGURING IP......................................................................................... 8-1

BASIC CONFIGURATION ...............................................................................................................................8-1

OVERVIEW ..................................................................................................................................................8-1

IP INTERFACES ....................................................................................................................................8-2

IP PACKET FLOW THROUGH A ROUTING SWITCH ..................................................................................8-2

ARP CACHE AND STATIC ARP TABLE ............................................................................................ 8-4

IP ROUTE TABLE ........................................................................................................................... 8-5

IP FORWARDING CACHE ................................................................................................................ 8-6

LAYER 4 SESSION TABLE ............................................................................................................... 8-6

IP ROUTE EXCHANGE PROTOCOLS .......................................................................................................8-6

IP MULTICAST PROTOCOLS ..................................................................................................................8-7

IP INTERFACE REDUNDANCY PROTOCOLS .............................................................................................8-7

NETWORK ADDRESS TRANSLATION .......................................................................................................8-7

ACCESS CONTROL LISTS AND IP ACCESS POLICIES ..............................................................................8-7

BASIC IP PARAMETERS AND DEFAULTS .......................................................................................................8-8

WHEN PARAMETER CHANGES TAKE EFFECT .........................................................................................8-8

IP GLOBAL PARAMETERS .....................................................................................................................8-9

IP INTERFACE PARAMETERS ...............................................................................................................8-13

CONFIGURING IP PARAMETERS – ROUTING SWITCHES ..............................................................................8-14

CONFIGURING IP ADDRESSES ............................................................................................................8-14

ASSIGNING AN IP ADDRESS TO AN ETHERNET PORT ..................................................................... 8-15

ASSIGNING AN IP ADDRESS TO A LOOPBACK INTERFACE............................................................... 8-16

ASSIGNING AN IP ADDRESS TO A VIRTUAL INTERFACE .................................................................. 8-17

DELETING AN IP ADDRESS ........................................................................................................... 8-18

CONFIGURING DOMAIN NAME SERVER (DNS) RESOLVER ....................................................................8-18

DEFINING A DNS ENTRY.............................................................................................................. 8-18

USING A DNS NAME TO INITIATE A TRACE ROUTE ....................................................................... 8-19

CONFIGURING PACKET PARAMETERS ..................................................................................................8-20

CHANGING THE ENCAPSULATION TYPE ......................................................................................... 8-20

CHANGING THE MAXIMUM TRANSMISSION UNIT (MTU).................................................................. 8-21

CHANGING THE ROUTER ID ................................................................................................................8-23

SPECIFYING A SINGLE SOURCE INTERFACE FOR TELNET, TACACS/TACACS+,

OR RADIUS PACKETS ..................................................................................................................8-24

CONFIGURING ARP PARAMETERS ......................................................................................................8-25

HOW ARP WORKS ...................................................................................................................... 8-25

RATE LIMITING ARP PACKETS ............................................................................................................8-26

CHANGING THE ARP AGING PERIOD ............................................................................................ 8-27

ENABLING PROXY ARP................................................................................................................ 8-28

CREATING STATIC ARP ENTRIES ................................................................................................. 8-28

CHANGING THE MAXIMUM NUMBER OF ENTRIES THE STATIC ARP TABLE CAN HOLD..................... 8-30

CONFIGURING FORWARDING PARAMETERS .........................................................................................8-31

CHANGING THE TTL THRESHOLD ................................................................................................. 8-31

ENABLING FORWARDING OF DIRECTED BROADCASTS.................................................................... 8-31

DISABLING FORWARDING OF IP SOURCE-ROUTED PACKETS ......................................................... 8-32

viii

Contents

ENABLING SUPPORT FOR ZERO-BASED IP SUB-NET BROADCASTS................................................ 8-33

MULTIPLE STATIC ROUTES TO THE SAME DESTINATION PROVIDE LOAD

CONFIGURING LOAD BALANCING AND REDUNDANCY USING MULTIPLE

CONFIGURING STANDARD STATIC IP ROUTES AND INTERFACE OR NULL

DISABLING ICMP MESSAGES .............................................................................................................8-33

DISABLING ICMP REDIRECT MESSAGES .............................................................................................8-35

CONFIGURING STATIC ROUTES ...........................................................................................................8-36

STATIC ROUTE TYPES ................................................................................................................. 8-36

STATIC IP ROUTE PARAMETERS................................................................................................... 8-36

SHARING AND REDUNDANCY ................................................................................................... 8-37

STATIC ROUTE STATES FOLLOW PORT STATES ............................................................................ 8-37

CONFIGURING A STATIC IP ROUTE ............................................................................................... 8-37

CONFIGURING A “NULL” ROUTE.................................................................................................... 8-39

STATIC ROUTES TO THE SAME DESTINATION ........................................................................... 8-40

STATIC ROUTES TO THE SAME DESTINATION ........................................................................... 8-42

CONFIGURING A DEFAULT NETWORK ROUTE .......................................................................................8-45

CONFIGURING A DEFAULT NETWORK ROUTE ................................................................................ 8-46

CONFIGURING IP LOAD SHARING ........................................................................................................8-47

HOW MULTIPLE EQUAL-COST PATHS ENTER THE IP ROUTE TABLE............................................... 8-47

HOW IP LOAD SHARING WORKS .................................................................................................. 8-49

DISABLING OR RE-ENABLING LOAD SHARING................................................................................ 8-56

CHANGING THE LOAD SHARING METHOD ON CHASSIS ROUTING SWITCHES ................................... 8-57

ENABLING HOST-BASED LOAD-SHARING FOR A SPECIFIC DESTINATION NETWORK......................... 8-57

CHANGING THE MAXIMUM NUMBER OF LOAD SHARING PATHS ...................................................... 8-58

OPTIMIZING THE IP FORWARDING CACHE ............................................................................................8-59

DISABLING UNICAST HIGH-PERFORMANCE MODE.......................................................................... 8-60

ENABLING CAM OPTIMIZATION OPTIONS ...................................................................................... 8-60

CONFIGURING IRDP ...........................................................................................................................8-65

ENABLING IRDP GLOBALLY ......................................................................................................... 8-65

ENABLING IRDP ON AN INDIVIDUAL PORT..................................................................................... 8-66

CONFIGURING RARP .........................................................................................................................8-67

HOW RARP DIFFERS FROM BOOTP/DHCP.................................................................................. 8-67DISABLING RARP........................................................................................................................ 8-67

CREATING STATIC RARP ENTRIES............................................................................................... 8-68

CHANGING THE MAXIMUM NUMBER OF STATIC RARP ENTRIES SUPPORTED ................................. 8-69

CONFIGURING UDP BROADCAST AND IP HELPER PARAMETERS ..........................................................8-69

ENABLING FORWARDING FOR A UDP APPLICATION ....................................................................... 8-70

CONFIGURING AN IP HELPER ADDRESS........................................................................................ 8-71

CONFIGURING BOOTP/DHCP FORWARDING PARAMETERS ..................................................................8-73

BOOTP/DHCP FORWARDING PARAMETERS.................................................................................. 8-73

CONFIGURING AN IP HELPER ADDRESS........................................................................................ 8-73

CHANGING THE IP ADDRESS USED FOR STAMPING BOOTP/DHCP REQUESTS .............................. 8-73

CHANGING THE MAXIMUM NUMBER OF HOPS TO A BOOTP RELAY SERVER ................................... 8-74

DISPLAYING IP CONFIGURATION INFORMATION AND STATISTICS .................................................................8-74

CHANGING THE NETWORK MASK DISPLAY TO PREFIX FORMAT ............................................................8-74

DISPLAYING IP INFORMATION ..............................................................................................................8-75

DISPLAYING GLOBAL IP CONFIGURATION INFORMATION ................................................................ 8-75

DISPLAYING CPU UTILIZATION STATISTICS ................................................................................... 8-78

DISPLAYING IP INTERFACE INFORMATION...................................................................................... 8-79

DISPLAYING INTERFACE NAME IN SYSLOG .................................................................................... 8-82

DISPLAYING ARP ENTRIES .......................................................................................................... 8-82

DISPLAYING THE FORWARDING CACHE ......................................................................................... 8-85

ix


DISPLAYING THE IP ROUTE TABLE................................................................................................ 8-88

CLEARING IP ROUTES ................................................................................................................. 8-90

DISPLAYING IP TRAFFIC STATISTICS............................................................................................. 8-91

CHAPTER 9

CONFIGURING RIP ...................................................................................... 9-1

ICMP HOST UNREACHABLE MESSAGE FOR UNDELIVERABLE ARPS .......................................................9-1

RIP PARAMETERS AND DEFAULTS ...............................................................................................................9-2

RIP GLOBAL PARAMETERS ...................................................................................................................9-2

RIP INTERFACE PARAMETERS ..............................................................................................................9-3

CONFIGURING RIP PARAMETERS ................................................................................................................9-3

ENABLING RIP .....................................................................................................................................9-3

CONFIGURING METRIC PARAMETERS ....................................................................................................9-4

CHANGING THE COST OF ROUTES LEARNED ON A PORT ................................................................. 9-4

CONFIGURING A RIP OFFSET LIST ................................................................................................. 9-5

CHANGING THE ADMINISTRATIVE DISTANCE ..........................................................................................9-6

CONFIGURING REDISTRIBUTION ............................................................................................................9-6

CONFIGURING REDISTRIBUTION FILTERS......................................................................................... 9-7

CHANGING THE REDISTRIBUTION METRIC ....................................................................................... 9-9

ENABLING REDISTRIBUTION............................................................................................................ 9-9

CONFIGURING ROUTE LEARNING AND ADVERTISING PARAMETERS .......................................................9-10

CHANGING THE UPDATE INTERVAL FOR ROUTE ADVERTISEMENTS................................................. 9-10

ENABLING LEARNING OF RIP DEFAULT ROUTES ........................................................................... 9-11

CONFIGURING A RIP NEIGHBOR FILTER........................................................................................ 9-11

CHANGING THE ROUTE LOOP PREVENTION METHOD ...........................................................................9-13

SUPPRESSING RIP ROUTE ADVERTISEMENT ON A VRRP OR VRRPE BACKUP INTERFACE ...................9-14

CONFIGURING RIP ROUTE FILTERS ....................................................................................................9-14

APPLYING A RIP ROUTE FILTER TO AN INTERFACE ....................................................................... 9-15

DISPLAYING RIP FILTERS ..........................................................................................................................9-17

DISPLAYING CPU UTILIZATION STATISTICS ................................................................................................9-18

CHAPTER 10

CONFIGURING IP MULTICAST PROTOCOLS................................................. 10-1

OVERVIEW OF IP MULTICASTING ...............................................................................................................10-1

MULTICAST TERMS .............................................................................................................................10-1

CHANGING GLOBAL IP MULTICAST PARAMETERS .......................................................................................10-2

CHANGING DYNAMIC MEMORY ALLOCATION FOR IP MULTICAST GROUPS .............................................10-2

INCREASING THE NUMBER OF IGMP MEMBERSHIP........................................................................ 10-2

DEFINING THE MAXIMUM NUMBER OF MULTICAST FLOWS.............................................................. 10-3

DEFINING THE MAXIMUM NUMBER OF DVMRP CACHE ENTRIES.................................................... 10-3

DEFINING THE MAXIMUM NUMBER OF PIM CACHE ENTRIES .......................................................... 10-3

CHANGING IGMP PARAMETERS ..........................................................................................................10-4

MODIFYING IGMP QUERY INTERVAL PERIOD ................................................................................ 10-4

MODIFYING IGMP MEMBERSHIP TIME .......................................................................................... 10-4

MODIFYING IGMP MAXIMUM RESPONSE TIME .............................................................................. 10-5

ENABLING HARDWARE FORWARDING OF MULTICAST TRAFFIC ON TAGGED PORTS (EP ONLY) ..............10-5

IPC AND IGC REQUIREMENTS ..................................................................................................... 10-5

DISABLING OR RE-ENABLING HARDWARE MULTICAST FORWARDING FOR TAGGED PORTS.............. 10-6

DISPLAYING THE STATE OF HARDWARE MULTICAST FORWARDING................................................. 10-7

x

Contents

ENABLING HARDWARE FORWARDING FOR ALL FRAGMENTS OF IP MULTICAST PACKETS .......................10-8

EP HARDWARE FORWARDING OF MULTICAST TRAFFIC ON TAGGED AND UNTAGGED PORTS .................10-8

DISABLING OR RE-ENABLING HARDWARE MULTICAST FORWARDING .............................................. 10-9

DISPLAYING THE STATE OF HARDWARE MULTICAST FORWARDING............................................... 10-10

ADDING AN INTERFACE TO A MULTICAST GROUP .....................................................................................10-10

PIM DENSE OVERVIEW ...........................................................................................................................10-11

INITIATING PIM MULTICASTS ON A NETWORK ....................................................................................10-11

PRUNING A MULTICAST TREE ...........................................................................................................10-12

GRAFTS TO A MULTICAST TREE ........................................................................................................10-13

PIM DM VERSIONS ..........................................................................................................................10-13

CONFIGURING PIM .................................................................................................................................10-14

ENABLING PIM ON THE ROUTER AND AN INTERFACE .........................................................................10-14

MODIFYING PIM GLOBAL PARAMETERS ............................................................................................10-15

MODIFYING NEIGHBOR TIMEOUT ................................................................................................ 10-16

MODIFYING HELLO TIMER .......................................................................................................... 10-16

MODIFYING PRUNE TIMER.......................................................................................................... 10-17

MODIFYING THE PRUNE WAIT TIMER .......................................................................................... 10-17

MODIFYING GRAFT RETRANSMIT TIMER...................................................................................... 10-18

MODIFYING INACTIVITY TIMER .................................................................................................... 10-18

MODIFYING THE TTL ........................................................................................................................10-19

PIM SPARSE OVERVIEW .........................................................................................................................10-20

PIM SPARSE ROUTER TYPES ...........................................................................................................10-20

RP PATHS AND SPT PATHS .............................................................................................................10-21

CONFIGURING PIM SPARSE ....................................................................................................................10-21

LIMITATIONS IN THIS RELEASE ..........................................................................................................10-22

CONFIGURING GLOBAL PARAMETERS ................................................................................................10-22

CONFIGURING PIM INTERFACE PARAMETERS ....................................................................................10-22

CONFIGURING BSRS ........................................................................................................................10-23

CONFIGURING RPS ..........................................................................................................................10-23

UPDATING PIM-SPARSE FORWARDING ENTRIES WITH NEW RP CONFIGURATION ......................... 10-24

STATICALLY SPECIFYING THE RP ............................................................................................... 10-24

CHANGING THE SHORTEST PATH TREE (SPT) THRESHOLD ...............................................................10-25

CHANGING THE PIM JOIN AND PRUNE MESSAGE INTERVAL ...............................................................10-26

DISPLAYING PIM SPARSE CONFIGURATION INFORMATION AND STATISTICS .........................................10-26

DISPLAYING BASIC PIM SPARSE CONFIGURATION INFORMATION ................................................. 10-26

DISPLAYING A LIST OF MULTICAST GROUPS................................................................................ 10-28

DISPLAYING BSR INFORMATION ................................................................................................. 10-29

DISPLAYING CANDIDATE RP INFORMATION ................................................................................. 10-30

DISPLAYING RP-TO-GROUP MAPPINGS....................................................................................... 10-31

DISPLAYING RP INFORMATION FOR A PIM SPARSE GROUP......................................................... 10-32

DISPLAYING THE RP SET LIST.................................................................................................... 10-32

DISPLAYING MULTICAST NEIGHBOR INFORMATION....................................................................... 10-33

DISPLAYING THE PIM FLOW CACHE ........................................................................................... 10-34

DISPLAYING THE PIM MULTICAST CACHE ................................................................................... 10-35

DISPLAYING PIM TRAFFIC STATISTICS........................................................................................ 10-37

CONFIGURING MULTICAST SOURCE DISCOVERY PROTOCOL (MSDP) .......................................................10-38

PEER REVERSE PATH FORWARDING (RPF) FLOODING ......................................................................10-39

SOURCE ACTIVE CACHING ................................................................................................................10-40

CONFIGURING MSDP .......................................................................................................................10-40

xi


ENABLING MSDP ...................................................................................................................... 10-40

CONFIGURING MSDP PEERS ..................................................................................................... 10-41

FILTERING MSDP SOURCE-GROUP PAIRS ........................................................................................10-41

FILTERING INCOMING SOURCE-ACTIVE MESSAGES...................................................................... 10-41

FILTERING ADVERTISED SOURCE-ACTIVE MESSAGES.................................................................. 10-43

DISPLAYING MSDP INFORMATION .....................................................................................................10-44

DISPLAYING SUMMARY INFORMATION ......................................................................................... 10-44

DISPLAYING PEER INFORMATION ................................................................................................ 10-45

DISPLAYING SOURCE ACTIVE CACHE INFORMATION .................................................................... 10-49

CLEARING MSDP INFORMATION .......................................................................................................10-50

CLEARING PEER INFORMATION................................................................................................... 10-50

CLEARING THE SOURCE ACTIVE CACHE ..................................................................................... 10-50

CLEARING MSDP STATISTICS.................................................................................................... 10-50

DVMRP OVERVIEW ................................................................................................................................10-50

INITIATING DVMRP MULTICASTS ON A NETWORK .............................................................................10-51

PRUNING A MULTICAST TREE ...........................................................................................................10-51

GRAFTS TO A MULTICAST TREE ........................................................................................................10-53

CONFIGURING DVMRP ...........................................................................................................................10-53

ENABLING DVMRP ON THE ROUTING SWITCH AND INTERFACE ..........................................................10-53

MODIFYING DVMRP GLOBAL PARAMETERS ......................................................................................10-55

MODIFYING NEIGHBOR TIMEOUT ................................................................................................ 10-55

MODIFYING ROUTE EXPIRES TIME .............................................................................................. 10-56

MODIFYING ROUTE DISCARD TIME ............................................................................................. 10-56

MODIFYING PRUNE AGE............................................................................................................. 10-57

MODIFYING GRAFT RETRANSMIT TIME........................................................................................ 10-57

MODIFYING PROBE INTERVAL..................................................................................................... 10-58

MODIFYING REPORT INTERVAL ................................................................................................... 10-58

MODIFYING TRIGGER INTERVAL .................................................................................................. 10-59

MODIFYING DEFAULT ROUTE...................................................................................................... 10-59

MODIFYING DVMRP INTERFACE PARAMETERS .................................................................................10-59

MODIFYING THE TTL.................................................................................................................. 10-60

MODIFYING THE METRIC ............................................................................................................ 10-60

ENABLING ADVERTISING............................................................................................................. 10-61

CONFIGURING AN IP TUNNEL ..................................................................................................................10-61

USING ACLS TO CONTROL MULTICAST FEATURES ...................................................................................10-63

USING ACLS TO LIMIT STATIC RP GROUPS ......................................................................................10-63

USING ACLS TO LIMIT PIM RP CANDIDATE ADVERTISEMENT ............................................................10-64

USING ACLS TO CONTROL MULTICAST TRAFFIC BOUNDARIES ...........................................................10-65

CONFIGURING A STATIC MULTICAST ROUTE ............................................................................................10-66

TRACING A MULTICAST ROUTE ................................................................................................................10-67

DISPLAYING ANOTHER MULTICAST ROUTER’S MULTICAST CONFIGURATION ..............................................10-68

CHAPTER 11

CONFIGURING OSPF ................................................................................ 11-1

OVERVIEW OF OSPF ................................................................................................................................11-1

DESIGNATED ROUTERS IN MULTI-ACCESS NETWORKS .........................................................................11-2

DESIGNATED ROUTER ELECTION ........................................................................................................11-3

OSPF RFC 1583 AND 2178 COMPLIANCE .........................................................................................11-4

REDUCTION OF EQUIVALENT AS EXTERNAL LSAS ...............................................................................11-4

xii

Contents

ALGORITHM FOR AS EXTERNAL LSA REDUCTION ......................................................................... 11-5

SUPPORT FOR OSPF RFC 2328 APPENDIX E ....................................................................................11-6

DYNAMIC OSPF ACTIVATION AND CONFIGURATION .............................................................................11-7

DYNAMIC OSPF MEMORY ..................................................................................................................11-7

CONFIGURING OSPF ................................................................................................................................11-8

CONFIGURATION RULES .....................................................................................................................11-8

OSPF PARAMETERS ..........................................................................................................................11-8

GLOBAL PARAMETERS ................................................................................................................. 11-8

INTERFACE PARAMETERS............................................................................................................. 11-9

ENABLE OSPF ON THE ROUTER .........................................................................................................11-9

NOTE REGARDING DISABLING OSPF............................................................................................ 11-9

ASSIGN OSPF AREAS ......................................................................................................................11-10

ASSIGN A TOTALLY STUBBY AREA.............................................................................................. 11-11

ASSIGN A NOT-SO-STUBBY AREA (NSSA) ................................................................................. 11-12

ASSIGNING AN AREA RANGE (OPTIONAL) ..........................................................................................11-16

ASSIGNING INTERFACES TO AN AREA ................................................................................................11-17

MODIFY INTERFACE DEFAULTS .........................................................................................................11-18

OSPF INTERFACE PARAMETERS ................................................................................................ 11-19

CHANGE THE TIMER FOR OSPF AUTHENTICATION CHANGES .............................................................11-21

BLOCK FLOODING OF OUTBOUND LSAS ON SPECIFIC OSPF INTERFACES .........................................11-22

ASSIGN VIRTUAL LINKS ....................................................................................................................11-22

MODIFY VIRTUAL LINK PARAMETERS .................................................................................................11-25

VIRTUAL LINK PARAMETER DESCRIPTIONS.................................................................................. 11-25

CHANGING THE REFERENCE BANDWIDTH FOR THE COST ON OSPF INTERFACES ...............................11-27

INTERFACE TYPES TO WHICH THE REFERENCE BANDWIDTH DOES NOT APPLY ........................... 11-27

CHANGING THE REFERENCE BANDWIDTH.................................................................................... 11-27

DEFINE REDISTRIBUTION FILTERS .....................................................................................................11-28

PREVENT SPECIFIC OSPF ROUTES FROM BEING INSTALLED IN THE IP ROUTE TABLE ........................11-31

MODIFY DEFAULT METRIC FOR REDISTRIBUTION ...............................................................................11-34

ENABLE ROUTE REDISTRIBUTION ......................................................................................................11-34

EXAMPLE USING A ROUTE MAP.................................................................................................. 11-35

DISABLE OR RE-ENABLE LOAD SHARING ...........................................................................................11-37

CONFIGURE EXTERNAL ROUTE SUMMARIZATION ...............................................................................11-38

CONFIGURE DEFAULT ROUTE ORIGINATION .......................................................................................11-39

MODIFY SPF TIMERS .......................................................................................................................11-40

MODIFY REDISTRIBUTION METRIC TYPE ............................................................................................11-40

MODIFY ADMINISTRATIVE DISTANCE ..................................................................................................11-41

CONFIGURING ADMINISTRATIVE DISTANCE BASED ON ROUTE TYPE............................................. 11-41

CONFIGURE OSPF GROUP LINK STATE ADVERTISEMENT (LSA) PACING ...........................................11-42

USAGE GUIDELINES ................................................................................................................... 11-42

CHANGING THE LSA PACING INTERVAL ...................................................................................... 11-42

MODIFY OSPF TRAPS GENERATED ..................................................................................................11-42

MODIFY OSPF STANDARD COMPLIANCE SETTING .............................................................................11-43

MODIFY EXIT OVERFLOW INTERVAL ..................................................................................................11-44

MODIFY THE MAXIMUM NUMBER OF ROUTES .....................................................................................11-44

MODIFY LSDB LIMITS ......................................................................................................................11-45

SPECIFY TYPES OF OSPF SYSLOG MESSAGES TO LOG ....................................................................11-46

DISPLAYING OSPF INFORMATION ............................................................................................................11-46

xiii


12

345

DISPLAYING GENERAL OSPF CONFIGURATION INFORMATION ............................................................11-47

DISPLAYING CPU UTILIZATION STATISTICS ........................................................................................11-48

DISPLAYING OSPF AREA INFORMATION ............................................................................................11-49

DISPLAYING OSPF NEIGHBOR INFORMATION ....................................................................................11-50

DISPLAYING OSPF INTERFACE INFORMATION ....................................................................................11-53

DISPLAYING OSPF ROUTE INFORMATION ..........................................................................................11-53

DISPLAYING THE ROUTES THAT HAVE BEEN REDISTRIBUTED INTO OSPF .................................... 11-55

DISPLAYING OSPF EXTERNAL LINK STATE INFORMATION ..................................................................11-55

DISPLAYING OSPF LINK STATE INFORMATION ...................................................................................11-56

DISPLAYING THE DATA IN AN LSA .....................................................................................................11-57

DISPLAYING OSPF VIRTUAL NEIGHBOR INFORMATION .......................................................................11-58

DISPLAYING OSPF VIRTUAL LINK INFORMATION ................................................................................11-58

DISPLAYING OSPF ABR AND ASBR INFORMATION ...........................................................................11-58

DISPLAYING OSPF TRAP STATUS .....................................................................................................11-59

CHAPTER 12

CONFIGURING BGP4 ................................................................................ 12-1

OVERVIEW OF BGP4 ................................................................................................................................12-1

RELATIONSHIP BETWEEN THE BGP4 ROUTE TABLE AND THE IP ROUTE TABLE ....................................12-2

HOW BGP4 SELECTS A PATH FOR A ROUTE .......................................................................................12-3

BGP4 MESSAGE TYPES .....................................................................................................................12-4

OPEN MESSAGE......................................................................................................................... 12-4

UPDATE MESSAGE .................................................................................................................... 12-5

KEEPALIVE MESSAGE ............................................................................................................... 12-5

NOTIFICATION MESSAGE ......................................................................................................... 12-5

BASIC CONFIGURATION AND ACTIVATION FOR BGP4 .................................................................................12-5

NOTE REGARDING DISABLING BGP4 ..................................................................................................12-6

BGP4 PARAMETERS .................................................................................................................................12-7

WHEN PARAMETER CHANGES TAKE EFFECT .......................................................................................12-8

IMMEDIATELY ............................................................................................................................... 12-9AFTER RESETTING NEIGHBOR SESSIONS...................................................................................... 12-9

AFTER DISABLING AND RE-ENABLING REDISTRIBUTION ................................................................. 12-9

MEMORY CONSIDERATIONS .......................................................................................................................12-9

MEMORY CONFIGURATION OPTIONS OBSOLETED BY DYNAMIC MEMORY ............................................12-10

BASIC CONFIGURATION TASKS ................................................................................................................12-10

ENABLING BGP4 ON THE ROUTER ....................................................................................................12-10

CHANGING THE ROUTER ID ..............................................................................................................12-11

SETTING THE LOCAL AS NUMBER .....................................................................................................12-12

ADDING A LOOPBACK INTERFACE ......................................................................................................12-12

ADDING BGP4 NEIGHBORS ..............................................................................................................12-13

ENCRYPTION OF BGP4 MD5 AUTHENTICATION KEYS ................................................................. 12-19

ADDING A BGP4 PEER GROUP ........................................................................................................12-21

PEER GROUP PARAMETERS....................................................................................................... 12-21

CONFIGURATION RULES............................................................................................................. 12-2

CONFIGURING A PEER GROUP ................................................................................................... 12- 2

APPLYING A PEER GROUP TO A NEIGHBOR................................................................................. 12-2

ADMINISTRATIVELY SHUTTING DOWN A SESSION WITH A BGP4 NEIGHBOR.................................. 12-2

OPTIONAL CONFIGURATION TASKS ..........................................................................................................12-2

xiv

Contents

CHANGING THE KEEP ALIVE TIME AND HOLD TIME ............................................................................12-25

CONFIGURING THE ROUTING SWITCH TO ALWAYS COMPARE MULTI-EXIT

DISABLING OR RE-ENABLING RE-ADVERTISEMENT OF ALL LEARNED

CHANGING THE BGP4 NEXT-HOP UPDATE TIMER .............................................................................12-26

ENABLING FAST EXTERNAL FALLOVER ..............................................................................................12-26

CHANGING THE MAXIMUM NUMBER OF PATHS FOR BGP4 LOAD SHARING .........................................12-27

HOW LOAD SHARING AFFECTS ROUTE SELECTION ..................................................................... 12-27

HOW LOAD SHARING WORKS..................................................................................................... 12-27

CHANGING THE MAXIMUM NUMBER OF SHARED BGP4 PATHS .................................................... 12-27

CUSTOMIZING BGP4 LOAD SHARING ................................................................................................12-28

SPECIFYING A LIST OF NETWORKS TO ADVERTISE .............................................................................12-28

SPECIFYING A ROUTE MAP NAME WHEN CONFIGURING BGP4 NETWORK INFORMATION............... 12-30

CHANGING THE DEFAULT LOCAL PREFERENCE ..................................................................................12-30

USING THE IP DEFAULT ROUTE AS A VALID NEXT HOP FOR A BGP4 ROUTE .....................................12-31

ADVERTISING THE DEFAULT ROUTE ..................................................................................................12-31

CHANGING THE DEFAULT MED (METRIC) USED FOR ROUTE REDISTRIBUTION ....................................12-32

ENABLING NEXT-HOP RECURSION ....................................................................................................12-32

EXAMPLE WHEN RECURSIVE ROUTE LOOKUPS ARE DISABLED.................................................... 12-33

EXAMPLE WHEN RECURSIVE ROUTE LOOKUPS ARE ENABLED..................................................... 12-34

ENABLING RECURSIVE NEXT-HOP LOOKUPS............................................................................... 12-35

CHANGING ADMINISTRATIVE DISTANCES ...........................................................................................12-35

REQUIRING THE FIRST AS TO BE THE NEIGHBOR’S AS ......................................................................12-37

DISABLING OR RE-ENABLING COMPARISON OF THE AS-PATH LENGTH ...............................................12-37

ENABLING OR DISABLING COMPARISON OF THE ROUTER IDS .............................................................12-37

DISCRIMINATORS (MEDS) ...........................................................................................................12-37

TREATING MISSING MEDS AS THE WORST MEDS .............................................................................12-38

AUTOMATICALLY SUMMARIZING SUBNET ROUTES INTO CLASS A, B, OR C NETWORKS .......................12-39

CONFIGURING ROUTE REFLECTION PARAMETERS .............................................................................12-39

SUPPORT FOR RFC 2796 .......................................................................................................... 12-40

CONFIGURATION PROCEDURES .................................................................................................. 12-41

CONFIGURING CONFEDERATIONS ......................................................................................................12-42

CONFIGURING A BGP CONFEDERATION...................................................................................... 12-44

AGGREGATING ROUTES ADVERTISED TO BGP4 NEIGHBORS .............................................................12-45

MODIFYING REDISTRIBUTION PARAMETERS ..............................................................................................12-47

REDISTRIBUTING CONNECTED ROUTES .............................................................................................12-49

REDISTRIBUTING RIP ROUTES ..........................................................................................................12-49

REDISTRIBUTING OSPF EXTERNAL ROUTES .....................................................................................12-49

REDISTRIBUTING STATIC ROUTES .....................................................................................................12-50

BGP4 ROUTES TO ALL BGP4 NEIGHBORS ..................................................................................12-50

REDISTRIBUTING IBGP ROUTES INTO RIP AND OSPF ......................................................................12-50

FILTERING ..............................................................................................................................................12-51

FILTERING SPECIFIC IP ADDRESSES .................................................................................................12-51

FILTERING AS-PATHS .......................................................................................................................12-53

DEFINING AN AS-PATH FILTER................................................................................................... 12-54

DEFINING AN AS-PATH ACL ...................................................................................................... 12-55

USING REGULAR EXPRESSIONS ................................................................................................. 12-56

FILTERING COMMUNITIES ..................................................................................................................12-59

DEFINING A COMMUNITY FILTER................................................................................................. 12-59

xv


DEFINING A COMMUNITY ACL .................................................................................................... 12-61

REMOVING ROUTE DAMPENING FROM A NEIGHBOR’S ROUTES SUPPRESSED

DISPLAYING THOSE BEST BGP4 ROUTES THAT ARE NONETHELESS

DEFINING IP PREFIX LISTS ...............................................................................................................12-62

DEFINING NEIGHBOR DISTRIBUTE LISTS ............................................................................................12-65

DEFINING ROUTE MAPS ...................................................................................................................12-67

ENTERING THE ROUTE MAP INTO THE SOFTWARE ...................................................................... 12-68

SPECIFYING THE MATCH CONDITIONS......................................................................................... 12-69

MATCH EXAMPLES USING ACLS ................................................................................................ 12-71

SETTING PARAMETERS IN THE ROUTES ...................................................................................... 12-75

USING A TABLE MAP TO SET THE TAG VALUE ...................................................................................12-79

CONFIGURING COOPERATIVE BGP4 ROUTE FILTERING .....................................................................12-79

ENABLING COOPERATIVE FILTERING........................................................................................... 12-80

SENDING AND RECEIVING ORFS ................................................................................................ 12-80

DISPLAYING COOPERATIVE FILTERING INFORMATION................................................................... 12-81

CONFIGURING ROUTE FLAP DAMPENING .................................................................................................12-82

GLOBALLY CONFIGURING ROUTE FLAP DAMPENING ..........................................................................12-83

USING A ROUTE MAP TO CONFIGURE ROUTE FLAP DAMPENING FOR SPECIFIC ROUTES ....................12-84

USING A ROUTE MAP TO CONFIGURE ROUTE FLAP DAMPENING FOR A SPECIFIC NEIGHBOR ..............12-89

REMOVING ROUTE DAMPENING FROM A ROUTE ................................................................................12-91

DUE TO AGGREGATION ...............................................................................................................12-92

DISPLAYING AND CLEARING ROUTE FLAP DAMPENING STATISTICS .....................................................12-93

DISPLAYING ROUTE FLAP DAMPENING STATISTICS...................................................................... 12-93

CLEARING ROUTE FLAP DAMPENING STATISTICS ........................................................................ 12-94

DISPLAYING BGP4 INFORMATION ............................................................................................................12-95

DISPLAYING SUMMARY BGP4 INFORMATION .....................................................................................12-95

DISPLAYING THE ACTIVE BGP4 CONFIGURATION ..............................................................................12-98

DISPLAYING CPU UTILIZATION STATISTICS ........................................................................................12-99

DISPLAYING SUMMARY NEIGHBOR INFORMATION .............................................................................12-100

DISPLAYING BGP4 NEIGHBOR INFORMATION ...................................................................................12-102

DISPLAYING ROUTE INFORMATION FOR A NEIGHBOR ................................................................. 12-111

DISPLAYING PEER GROUP INFORMATION .........................................................................................12-115

DISPLAYING SUMMARY ROUTE INFORMATION ..................................................................................12-116

DISPLAYING THE BGP4 ROUTE TABLE ............................................................................................12-117

DISPLAYING THE BEST BGP4 ROUTES ..................................................................................... 12-119

NOT IN THE IP ROUTE TABLE .............................................................................................. 12-119

DISPLAYING BGP4 ROUTES WHOSE DESTINATIONS ARE UNREACHABLE ................................... 12-120

DISPLAYING INFORMATION FOR A SPECIFIC ROUTE ................................................................... 12-120

DISPLAYING ROUTE DETAILS.................................................................................................... 12-122

DISPLAYING BGP4 ROUTE-ATTRIBUTE ENTRIES ..............................................................................12-125

DISPLAYING THE ROUTES BGP4 HAS PLACED IN THE IP ROUTE TABLE ...........................................12-126

DISPLAYING ROUTE FLAP DAMPENING STATISTICS ..........................................................................12-127

DISPLAYING THE ACTIVE ROUTE MAP CONFIGURATION ....................................................................12-128

UPDATING ROUTE INFORMATION AND RESETTING A NEIGHBOR SESSION ................................................12-129

USING SOFT RECONFIGURATION .....................................................................................................12-130

ENABLING SOFT RECONFIGURATION......................................................................................... 12-130

PLACING A POLICY CHANGE INTO EFFECT ................................................................................ 12-130

DISPLAYING THE FILTERED ROUTES RECEIVED FROM THE NEIGHBOR OR PEER GROUP ............. 12-130

DISPLAYING ALL THE ROUTES RECEIVED FROM THE NEIGHBOR................................................. 12-131

xvi

Contents

DYNAMICALLY REQUEST

Advanced Configuration Guide - Hewlett Packardh20628. · Advanced Configuration and Management...

Documents

Transcript of Advanced Configuration Guide - Hewlett Packardh20628. · Advanced Configuration and Management...