Border Gateway Protocol BGP Lab Guide - eyejack.orgeyejack.org/curriculum-vitae/training/Border...

Border Gateway ProtocolBGP

Lab Guide

2

Configuration Loading

To load a new configuration into startup-configFrom the enable mode, perform these 3 steps:

1. Write eraseAnswer ‘y’ and wait a few seconds

2. Copy <file-name> startup-configPress ‘enter’ to the question and wait a few seconds

3. ReloadAnswer ‘y’ and wait for reboot

3

Labs UsedLab Name Flash File2-a Global BGP Config2-b eBGP Neighbor Interface2-c eBGP Networks2-d eBGP Neighbor Loopback2-e iBGP Neighbors2-f Weight2-g Local Preference2-h AS Path2-i Multi Exit Discriminator

4

Labs UsedLab Name Flash File4-a Route Reflectors4-b Peer Groups4-c Route Maps4-d AS Path Filters4-e Prefix Lists4-f Communities4-g Aggregation4-h Redistribution

5

LAB 1: Setup / Familiarization• Purpose:

– Review physical connectivity• Tasks

– Review equipment used– Review lab guide– Establish basic router identity

• Hostname• Passwords: enable and vty – use “cisco”• Login

• Commands used– Show ip route– Show version– Show running-config

6

Lab 1 - Physical Setup 1

TRAINING PC

CO NSO LE AUX

Cis

co

2

61

1

ACTLINKACTLINK

ETHERNET 1 ETHERNET 0

TRAINING PC

TRAINING PC

CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


Catalyst 2900 SERIES10Base T/100Base TX

XL

1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x

MODEMODE

SYSTEM RPSSYSTEM RPS

100Base-FX23 24

Async

Terminal

Server (c2611)

Cat 2924

Cat 2924

Seattle

San Francisco

Los Angeles

San Diego

Phoenix

El Paso

New Orleans

Portland

Dallas

Catalyst 2900 SERIES10Base T/100Base TX XL

1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x

MODEMODE


100Base-FX

23 24

Ethernet e0/0

IT

DomainCONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


Atlanta

CONSOLE AUX

Cisc

o

26

11

ACTLINKACTLINK


New York Ethernet e0/1

Cat 2924Catalyst 2900 SERIES10Base T/100Base TX XL

1x 2x3x 4x

5x 6x7x 8x

9x 10x11x 12x

13x 14x15x 16x

17x 18x19x 20x

21x 22x

MODEMODE


100Base-FX

23 24

7

Reverse Telnet Guidetty cable Router Name PC

2033 0/1 San Francisco Training 1

2034 0/2 Los Angeles Training 2

2035 0/3 San Diego Training 3

2036 0/4 Phoenix Training 4

2037 0/5 El Paso Training 5

2038 0/6 Dallas Training 6

2039 0/7 New Orleans Training 7

2040 0/8 Seattle

2041 1/1 Portland Training 8

2042 1/2 Atlanta Training 9

2043 1/3 New York Training 10

8

Lab 1 - Physical Setup 2

Frame

RelayRouter

RouterRouter

Router

RouterRouterRouterRouterRouter

Router

Router

San

Francisco

New YorkAtlantaNew

OrleansDallas

El Paso

Phoenix

San

Diego

Portland

Los

Angeles

Seattle

9

LAB 2-a: Configuration - eBGP• Purpose

– Get external BGP (eBGP) up and running• Tasks

– Configure the BGP Autonomous System– Configure IP information on interfaces (ethernet and

loopback• Configuration Commands used

– Router BGP <ASN>• Commands used

– Show ip route - Ping– Show ip bgp– Show ip bgp summary - Show ip bgp neighbor

10

Lab 2-a: ASN setup

Router

Router

Router

Router

RouterRouterRouter

Router

Router

Router

San

Francisco

New York

Atlanta

New

Orleans

DallasEl PasoPhoenix

San

Diego

PortlandLos

Angeles

ASN

1

ASN 10

ASN

9

ASN

8

ASN

7

ASN 6ASN 5

ASN

4

ASN

3

ASN

2

11

Lab 2-a: IP setup

Router

Router

Router

Router

RouterRouterRouter

Router

Router

Router

San

Francisco

New York

Atlanta

New

Orleans

DallasEl PasoPhoenix

San

Diego

PortlandLos

Angeles

201.0.100.0

209.0.100.0

208.1.100.0

207.0.100.0

206.1.100.0205.0.100.0

204.1.100.0

203.0.100.0

202.1.100.0

210.1.100.0

e 0/0

e 0/1 e 0/0

e 0/0

e 0/0

e 0/0

e 0/1

e 0/1

e 0/1

e 0/1

/ 30

12

Lab 2-a: Worksheet 1• Router (city) _______________ Lab #____• E0/0 ____.0.100.____ /30

– Connected to ___________ Lab#____ Interface E__/__

• E0/1 ____.1.100.____ /30– Connected to ___________ Lab#____ Interface E__/__

• Loopback 1 ____.1.102.1 /24• Loopback 2 ____.2.102.1 /25• Loopback 3 ____.3.102.1 /26

13

Lab 2-a: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________– __________________ purpose ___________________– __________________ purpose ___________________

• Output from:– Show ip route: ____________________– Show ip bgp: ____________________– Show ip bgp summary: _______________

• Are you seeing bgp neighbors?• Are you seeing bgp routes from neighbors?

14

LAB 2-b: Configuration - eBGP• Purpose

– Understand the configuration steps for eBGP neighbors– Understand communication between eBGP speakers

• Tasks– Configure BGP neighbors (interface peering)

• Configuration Commands used– Neighbor A.B.C.D remote-as <ASN>

• Commands used– Show ip route - Debug ip bgp events– Show ip bgp - Debug ip bgp updates– Show ip bgp summary– Show ip bgp neighbor

15

Lab 2-b: Worksheet 1

• Router (city) ___________ Lab #___ ASN ___• E0/0 peer:

– City name __________ Lab #___ ASN ___– (local to you) IP addr _____.0.100._____– (remote) IP addr _____.0.100._____

• E0/1 peer– City name __________ Lab #___ ASN ___– (local to you) IP addr _____.1.100._____– (remote) IP addr _____.1.100._____

16

Lab 2-b: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________


• Are you seeing bgp neighbors?– IP address ____.0.100.____ ASN ____– IP address ____.1.100.____ ASN ____

• Are you seeing bgp routes from neighbors?

17

LAB 2-c: Configuration - eBGP• Purpose

– Announce networks externally across AS boundaries• Tasks

– Configure BGP network statements• Configuration Commands used

– Router bgp <ASN>• Network ______ mask ______

• Commands used– Show ip route– Show ip bgp– Show ip bgp summary– Show ip bgp neighbor

18

Lab 2-c: Worksheet 1• Router (city)_______________ Lab #___ ASN ___

• Loopback 1 _____.1.102.1 /24– Network _____.1.102._____ mask 255.255.255._____



19

Lab 2-c: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________


• Are you seeing bgp routes from neighbors?– _______________________ mask /____– _______________________ mask /____– _______________________ mask /____

20

LAB 2-d: Configuration - eBGP• Purpose

– Get eBGP up and running using Loopback peering• Tasks

– Delete eBGP neighbor [interface peering] configuration– Create interface Loopback 10

• ____.1.1.1 /32– Create neighbor configuration using remote interface

Loopback IP address• Configuration Commands used for Neighbor

– remote-as• Commands used

– Show ip bgp - Show ip bgp summary– Show ip bgp neighbor

21

Lab 2-d: Worksheet 1• Router (city) ___________ Lab #___ ASN ___• E0/0 peer: (peer to remote Loopback address)

– City name __________ Lab #___ ASN ___– (local to you Loopback 10) IP addr

_____._____._____._____– (remote Loopback 10) IP addr _____._____._____._____

• E0/1 peer: (peer to remote Loopback address)– City name __________ Lab #___ ASN ___– (local to you Loopback 10) IP addr

_____._____._____._____– (remote Loopback 10) IP addr _____._____._____._____

22

Lab 2-d: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________– __________________ purpose ___________________– __________________ purpose ___________________


• Are you seeing bgp neighbors?• Are you seeing bgp routes from neighbors?

23

LAB 2-e: Configuration - iBGP• Purpose

– Understand the configuration steps for iBGP neighbors– Understand communication between iBGP speakers

• Tasks– Delete BGP process– Create BGP process using ASN 88– Peer with Seattle router: 182.16.100.100– Create and announce Loopback 1 network

• Configuration Commands used– Neighbor, synchronization

• Commands used– Show ip bgp - Show ip bgp summary– Show ip bgp neighbor

24

Lab 2-e: IP Setup

Router

RouterRouter

Router


Router

Router

San

Francisco

New YorkAtlantaNew

OrleansDallas

El Paso

Phoenix

San

Diego

Portland

Los

Angeles

Seattle

Catalyst

182.16.100.0 / 24

e 0/0

25

Lab 2-e: Worksheet 1

• Router (city) __________ Lab #___ ASN _88_• E0/0 peer: (start with peer to Seattle)

– City name: Seattle ASN _88_– (local to you) IP addr 182.16.100._____– (remote) IP addr 182.16.100.100

26

Lab 2-e: Worksheet 2• Commands used:

– __________________ purpose ___________________

– __________________ purpose ___________________

– __________________ purpose ___________________

• Are you seeing BGP table entries from neighbors?– _______________________ mask /____

• Next Hop _________________________

• Are you seeing IP routes?– _______________________ mask /____

• Next Hop _________________________

27

LAB 2-f: Attribute - Weight• Purpose

– Determine the effect of altering the WEIGHT Attribute• Tasks

– Load new config for “Lab-2-F”– Configure BGP AS and Neighbors– Announce Loopback 2 and 3– Change the ‘weight’ attribute on a neighbor

• Configuration Commands used– Neighbor A.B.C.D weight 50

• Commands used– Show ip bgp - Show ip route

28

Lab 2-f: AS Setup

Router

Router

Router

Router

RouterRouterRouter

Router

Router

Router

San

Francisco New York

Atlanta

New

Orleans

DallasEl Paso

Phoenix

San

Diego

Portland

Los

Angeles

ASN

1

ASN 10

ASN

9

ASN

8

ASN

7

ASN 6

ASN 5

ASN

4

ASN

3

ASN

2

29

Lab 2-f: PVC SetupPDX (902) – LAX (209)PDX (903) – SND (309)PDX (908) – ATL (809)SFO (102) – LAX (201)SFO (105) – ELP (501)LAX (201) – SFO (102)LAX (203) – SND (302)LAX (209) – PDX (902)SND (302) – LAX (203)SND (309) – PDX (903)PHX (405) – ELP (504)PHX (406) – DAL (604)PHX (407) – NOL (704)

ELP (501) – SFO (105)ELP (504) – PHX (405)ELP (506) – DAL (605)DAL (604) – PHX (406)DAL (605) – ELP (506)DAL (609) – NYC (906)NOL (704) – PHX (407)NOL (708) – ATL (807)NOL (709) – NYC (907)ATL (807) – NOL (708)ATL (809) – PDX (908)NYC (906) – DAL (609)NYC (907) – NOL (709)

30

Lab 2-f: IP SetupPDX (902) – LAX (209)PDX (903) – SND (309)PDX (907) – ATL (709)SFO (102) – LAX (201)SFO (105) – ELP (501)LAX (203) – SND (302)PHX (405) – ELP (504)PHX (406) – DAL (604)PHX (407) – NOL (704)ELP (506) – DAL (605)DAL (609) – NYC (906)NOL (708) – ATL (807)NOL (709) – NYC (907)

92.29.1.0 /3093.39.1.0 /3097.79.1.0 /3012.21.1.0 /3015.51.1.0 /3023.32.1.0 /3045.54.2.0 /3046.64.2.0 /3047.74.2.0 /3056.65.2.0 /3069.96.2.0 /3078.87.2.0 /3079.97.2.0 /30

31

Lab 2-f: Worksheet• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________

• Are you seeing multi paths to the same destination?– AS Path 1 _____________ AS Path 2 _____________


• Next Hop _________________________


• Next Hop _________________________

32

LAB 2-g: Attribute - Local Pref

• Purpose– Determine the effect of altering the LOCAL-PREF

Attribute• Tasks

– Remove the ‘weight’ command from the last lab– Create a route-map containing a Local Pref set– Apply the route-map to the neighbor

• Configuration Commands used– Route-map loc-pref permit 10

Set local-preference– Router BGP <ASN>

• Neighbor A.B.C.D route-map loc-pref in

33

Lab 2-g: AS Setup

Router

Router

Router

Router

RouterRouterRouter

Router

Router

Router

San

Francisco New York

Atlanta

New

Orleans

DallasEl Paso

Phoenix

San

Diego

Portland

Los

Angeles

ASN

1

ASN 10

ASN

9

ASN

8

ASN

7

ASN 6

ASN 5

ASN

4

ASN

3

ASN

2

34

Lab 2-g: Worksheet• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________

• Are you seeing mult paths to the same destination?– AS Path 1 _____________ AS Path 2 _____________


• Next Hop _________________________


• Next Hop _________________________

35

LAB 2-h: Attribute - AS Path• Purpose

– Determine the effect of altering the AS-PATH Attribute• Tasks

– Remove the route-map applied in last lab– Create a route-map with the AS Prepend– Apply the route-map to the neighbor

• Configuration Commands used– Route-map as-prepend

Set as-path prepend <ASN> <ASN>– Router BGP <ASN>

• Neighbor A.B.C.D route-map as-prepend out

36

Lab 2-h: AS Setup

Router

Router

Router

Router

RouterRouterRouter

Router

Router

Router

San

Francisco New York

Atlanta

New

Orleans

DallasEl Paso

Phoenix

San

Diego

Portland

Los

Angeles

ASN

1

ASN 10

ASN

9

ASN

8

ASN

7

ASN 6

ASN 5

ASN

4

ASN

3

ASN

2

37

Lab 2-h: Worksheet• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________

• Are you seeing multi paths to the same destination?– AS Path 1 _____________ AS Path 2 _____________


• Next Hop _________________________


• Next Hop _________________________

38

Lab 4-a: Route Reflector• Purpose

– Determine the role Route Reflectors play in iBGP mesh• Tasks

– Advertise *LOOPBACK 2 and 3* networks into BGP– Create additional loopback subnets and advertise in BGP– Create neighbor statements with Seattle and Portland

loopbacks *ONLY*• Configuration Commands used

– Neighbor: synchronization• Commands used

– Show ip bgp– Show ip route

39

Lab 4-a: Route Reflectors

Router

RouterRouter

Router


Router

Router

San

Francisco

New YorkAtlantaNew

OrleansDallas

El Paso

Phoenix

San

Diego

Portland

Los

Angeles

Seattle

Catalyst

182.16.100.0 / 24

e 0/0

40

Lab 4-a: Worksheet 1• BGP AS: 88• Seattle loopback address: 9.1.102.1• BGP Network advertisements:

– Loopback 2 network ______.2.102.______ mask 255.255.255._____

– Loopback 3 network ______.3.102.______ mask 255.255.255._____

– Loopback ___ net ______.______.______.______ mask ____.____.____.____

41

Lab 4-a: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________


• Next Hop _________________________• Learned via _________________________


• Next Hop _________________________• Learned via _________________________

42

Lab 4-b: Peer Groups

• Purpose– Use Peer Groups to simplify neighbors

• Tasks– Create two peer-groups for: Internal and External– Create neighbor adjacencies using the peer-groups

• Configuration Commands used– Neighbor <peer group name> peer-group– Neighbor A.B.C.D peer-group <peer group name>

43

Lab 4-b: PVC and IP SetupPDX (902) - LAX (209)LAX (209) - PDX (902)

SFO (105) - ELP (501)ELP (501) - SFO (105)

DAL (604) - PHX (406)PHX (406) - DAL (604)

NOL (709) - NYC (907)NYC (907) - NOL (709)

11.216.100.111.216.100.2

11.216.101.111.216.101.2

189.216.102.1189.216.102.2

52.216.104.152.216.104.2

44

Lab 4-b: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

45

Lab 4-b: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

46

Lab 4-b - Worksheet 1• External peer-group name: _____________

– Peer-group ___________– Peer-group ___________– Peer-group ___________– Peer-group ___________– Peer-group ___________

• Peersneighbor ____.____.____.____ neighbor ____.____.____.____neighbor ____.____.____.____ neighbor ____.____.____.____

47

Lab 4-b - Worksheet 2• Internal peer-group name: _____________

– Peer-group ___________– Peer-group ___________– Peer-group ___________– Peer-group ___________– Peer-group ___________

• Peersneighbor ____.____.____.____ neighbor ____.____.____.____neighbor ____.____.____.____ neighbor ____.____.____.____

48

Lab 4-c: Route-maps• Purpose

– Understand the route-map function• Tasks

– Create a route-map– Assign a route-map to a neighbor or peer-group

• Configuration Commands used– Route-map <name> permit | deny <#>

match <list name | ##>set <action>

– Router BGP <ASN>neighbor A.B.C.D route-map <route-map-name> in|outneighbor <peer-grp> route-map <rte-map-name> in|out

49

Lab 4-c: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

50

Lab 4-c: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

51

Lab 4-c: Worksheet

• Global– Route-Map __________

Match _________________________Set _________________________

• Router BGP <ASN>– Neighbor A.B.C.D Route-Map __________ in|out

52

Lab 4-d: Prefix Lists• Purpose

– Use prefix lists to block routes• Tasks

– Create a prefix list– Assign list to neighbor or route-map or peer-group

• Commands– ip prefix-list <name> seq <#> permit|deny– ip prefix-list <name> seq 90 permit 0.0.0.0/0 le 32– Router BGP <ASN>

neighbor A.B.C.D prefix-list <name> in|outneighbor <peer-group> prefix-list <name> in|out

53

Lab 4-d: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

54

Lab 4-d: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

55

Lab 4-d: Worksheet

ip prefix-list _____seq <#> permit|deny <network> / <mask> <ge|le|gt|lt> <prefix length>

seq ___ ______ ___.___.___.___ / ___ ___ ___seq ___ ______ ___.___.___.___ / ___ ___ ___seq ___ ______ ___.___.___.___ / ___ ___ ___seq ___ ______ ___.___.___.___ / ___ ___ ___seq ___ ______ ___.___.___.___ / ___ ___ ___seq ___ ______ ___.___.___.___ / ___ ___ ___seq 90 permit 0.0.0.0 /0 le 32

56

Lab 4-e: AS Path Filters• Purpose

– Use AS path filters to block routes• Tasks

– Remove the prefix-list applied in last lab– Create an AS path access list– Assign list to neighbor or route-map or peer-group

• Configuration Commands used– ip as-path access-list <1-199> deny|permit <regex>– ip as-path access-list <1-199> permit .*– Router BGP <ASN>

neighbor A.B.C.D filter-list <1-199> in|outneighbor <peer-group> filter-list <1-199> in|out

57

Lab 4-e: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

58

Lab 4-e: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

59

Lab 4-e: Worksheet

ip as-path access-list ______deny|permit _____

<regex> ________________deny|permit _____

<regex> ________________deny|permit _____

<regex> ________________

60

Lab 4-f: Communities• Purpose

– Tag routes with community identifier• Tasks

– Create a route-map with a set community sequence– Assign route-map to neighbor or route-map or peer-group

• Configuration Commands used– Route-map <route-map-name>– Set community <ASN>:<##>– Router BGP <ASN>

Neighbor A.B.C.D route-map <route-map-name> in|out• Commands used

– Show ip bgp community <ASN>:<##>

61

Lab 4-f: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

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PHOENIX

SAN

DIEGO

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SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

62

Lab 4-f: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

63

Lab 4-f: Worksheet

• Route-map ____

Match _________________________Set community ___________________

64

Lab 4-g: Aggregation

• Purpose– Understand the effects of redistribution on BGP

• Tasks– Clear all network statements out of the bgp process– Redistribute the IGP in BGP

• Commands– Router BGP <ASN>

Aggregate-address A.B.C.D mask ____________• Advertise-map, AS-Set, Attribute-map,• Route-map, Summary-only, Suppress-map

65

Lab 4-g: Worksheet 1• Router (city)___________ Lab #___ ASN ___• Loopback 1 _____.1.102.1 /24

– Network _____.1.102._____ mask 255.255.255._____



• Aggregate-address ____.0.0.0 mask 255.0.0.0

66

Lab 4-g: Worksheet 2• Commands used:

– __________________ purpose ___________________– __________________ purpose ___________________


• Are you seeing bgp routes from neighbors?– _______________________ mask /____– _______________________ mask /____– _______________________ mask /____

67

Lab 4-h: Redistribution

• Purpose– Understand the effects of redistribution on BGP

• Tasks– Clear all network statements out of the bgp process– Redistribute the IGP in BGP

• Commands– Router BGP <ASN>

• Redistribute <IGP>

68

Lab 4-h: Redistribution

3640

2611

2611

2611

26112611

2611

2611

3640

Portland

Dallas

El Paso

PhoenixSan Diego

Los AngelesSan

Francisco

New

Orleans

Seattle

AS 10

AS 30

AS 20

11.1.201.200 /30

182.16.100.0 /24 35.96.100.0 /2418

2.1

6.2

00

.4

/30

10.58.219.0 /24

11.1.202.200 /30

11.1.203.20011.1.200.200 /30

69

Lab 4-h: ASN Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

ASN 10

ASN 30

ASN 40

ASN 20

70

Lab 4-h: IP Setup

Router

Router

Router

Router

Router

RouterRouter

RouterRouter

Router

PORTLAND

NEW

YORK

ATLANTA

NEW

ORLEANS

DALLAS

EL

PASO

PHOENIX

SAN

DIEGO

LOS

ANGELES

SAN

FRANCISCO

E 0/0

189.216.100.0

/24

E 0/1

52.39.200.0

/24

E 0/0

11.62.10.0

/24

S 0/0 (902 - 209)

11.216.100.0

/30

S 0/0 (105 - 501)

11.216.101.0

/30

E 0/1

11.216.102.0

/30

S 0/0 (907 - 709)

52.216.104.0

/30

S 0/0 (406 - 604)

189.216.103.0

/30

Border Gateway Protocol BGP Lab Guide - eyejack.orgeyejack.org/curriculum-vitae/training/Border...

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Transcript of Border Gateway Protocol BGP Lab Guide - eyejack.orgeyejack.org/curriculum-vitae/training/Border...