Packet Tracer Simulation Lab Layer 2 Switching

Johnson Liu

CCIE#11440(R&S, SP)

CCSI#31346

Packet Tracer Simulation Lab L2 Switching

Agenda Slide

• Power on a new switch

• Assign a port as an specific VLAN membership

• Setup hosts in the same VLAN

• Power on another new switch

• Assign a port as an trunk interface to pass-through different VLAN traffic over a single link

• Enable a Inter-VLAN routing to route traffic between different VLANs

3/6/2013 Confidential | Copyright 2012 Trend Micro Inc.

Power on a new switch

Power on a new Switch

3/6/2013 4 Confidential | Copyright 2012 Trend Micro Inc.

Switch basic configuration


Switch>enable

Switch#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#hostname SW1

SW1(config)#interface vlan 1

SW1(config-if)#no shutdown

%LINK-5-CHANGED: Interface Vlan1, changed state to up

SW1(config-if)#ip address 10.100.1.253 255.255.255.0

SW1(config-if)#exit

SW1(config)#ip default-gateway 10.100.1.254

SW1(config)#exit

SW1#

%SYS-5-CONFIG_I: Configured from console by console

SW1#copy running-config startup-config

Destination filename [startup-config]?

Building configuration...

[OK]

Check switch basic configuration


SW1#sh ip interface brief

Interface IP-Address OK? Method Status Protocol

FastEthernet0/1 unassigned YES manual down down




…






Vlan1 10.100.1.253 YES manual up down

SW1#



SW1#sh vlan

VLAN Name Status Ports

---- -------------------------------- --------- -------------------------------

1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4

Fa0/5, Fa0/6, Fa0/7, Fa0/8

Fa0/9, Fa0/10, Fa0/11, Fa0/12

Fa0/13, Fa0/14, Fa0/15, Fa0/16

Fa0/17, Fa0/18, Fa0/19, Fa0/20

Fa0/21, Fa0/22, Fa0/23, Fa0/24

1002 fddi-default act/unsup

1003 token-ring-default act/unsup

1004 fddinet-default act/unsup

1005 trnet-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2

---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------

1 enet 100001 1500 - - - - - 0 0

1002 fddi 101002 1500 - - - - - 0 0

1003 tr 101003 1500 - - - - - 0 0

1004 fdnet 101004 1500 - - - ieee - 0 0

1005 trnet 101005 1500 - - - ibm - 0 0

Remote SPAN VLANs

------------------------------------------------------------------------------

Primary Secondary Type Ports

------- --------- ----------------- ------------------------------------------



SW1#sh run

Building configuration…

Current configuration : 1091 bytes

!

version 12.1

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname SW1

!

interface FastEthernet0/1

!

interface FastEthernet0/2

…

interface Vlan1

ip address 10.100.1.253 255.255.255.0

!

ip default-gateway 10.100.1.254

!

…

SW1#

Assign a port as an specific VLAN membership



SW1#conf t


SW1(config)#int f0/1

SW1(config-if)#switchport mode access

SW1(config-if)#switchport access vlan 2

SW1(config-if)#^Z

SW1#


SW1#sh vlan


---- -------------------------------- --------- -------------------------------


Fa0/6, Fa0/7, Fa0/8, Fa0/9

Fa0/10, Fa0/11, Fa0/12, Fa0/13

Fa0/14, Fa0/15, Fa0/16, Fa0/17

Fa0/18, Fa0/19, Fa0/20, Fa0/21

Fa0/22, Fa0/23, Fa0/24

2 VLAN0002 active Fa0/1







SW1#conf t





SW1(config-if)#exit

SW1(config)#exit

SW1#


SW1#sh vlan


---- -------------------------------- --------- -------------------------------


Fa0/7, Fa0/8, Fa0/9, Fa0/10

Fa0/11, Fa0/12, Fa0/13, Fa0/14

Fa0/15, Fa0/16, Fa0/17, Fa0/18

Fa0/19, Fa0/20, Fa0/21, Fa0/22

Fa0/23, Fa0/24

2 VLAN0002 active Fa0/1, Fa0/2





Setup hosts in the same VLAN



• Now this Switch has two VLAN:

– VLAN 1: Management VLAN (SVI: 10.100.1.253/24)

– VLAN 2: For hosts PC0 and PC1 communicates to each other (10.100.2.0/24)

• Now PC0 can ping PC1, but PC0 and PC1 cannot ping Switch SVI interface (10.100.1.253/24), its normal and it was due to they belong to different subnet.

• Switch cannot route different subnet traffic, even all hosts connect to the same Switch but belong to different VLAN. (We need a layer 3 device to route Inter-VLAN traffic)

Power on another new switch

Another new switch basic configuration


Switch>en

Switch#conf t


Switch(config)#hostname SW2

SW2(config)#

SW2(config-if)#int vlan 1

SW2(config-if)#no shutdown

SW2(config-if)#

%LINK-5-CHANGED: Interface Vlan1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up

SW2(config-if)#ip address 10.100.1.252 255.255.255.0

SW2(config-if)#exit

SW2(config)#ip default-gateway 10.100.1.254




% Access VLAN does not exist. Creating vlan 2

Assign a port as an trunk interface to pass-through different VLAN traffic over a single link

Setup trunk interconnection between two SW1 & SW2 F0/24


SW1>en

SW1#conf t



SW1(config-if)#switchport mode trunk

SW1(config-if)#^Z

SW1#


SW2>en

SW2#conf t




SW2(config-if)#^Z

SW2#


• Now SW2 can ping SW1 VLAN1 via Trunk interface(FastEthernet0/24)

SW2#ping 10.100.1.253

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.100.1.253, timeout is 2 seconds:

..!!!

Success rate is 60 percent (3/5), round-trip min/avg/max = 20/20/20 ms

Switch Trunk allow VLAN1 & VLAN2 pass-through, but not for Inter-VLAN routing


Enable a Inter-VLAN routing to route traffic between different VLANs

Add a new Router to support Inter-VLAN routing


Configure Router interface as VLAN1 & VLAN2 gateway


Router>en

Router#conf t


Router(config)#int f0/0

Router(config-if)#no shutdown

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

Router(config-if)#int f0/0.1

%LINK-5-CHANGED: Interface FastEthernet0/0.1, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up

Router(config-subif)#encapsulation dot1Q 1 native

Router(config-subif)#ip address 10.100.1.254 255.255.255.0

Router(config-subif)#int f0/0.2

%LINK-5-CHANGED: Interface FastEthernet0/0.2, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.2, changed state to up

Router(config-subif)#encapsulation dot1Q 2

Router(config-subif)#ip address 10.100.2.254 255.255.255.0

Router(config-subif)#exit

Router(config)#exit

Router#

Configure SW1 F0/23 Trunk interface uplink to Router F0/0


SW1>en

SW1#conf t




SW1(config-if)#exit

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/23, changed state to down

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/23, changed state to up

SW1(config)#exit

SW1#

• Now SW1 can ping Router F0/0.1 via Trunk interface(FastEthernet0/23)

SW1#

SW1#ping 10.100.1.254

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.100.1.254, timeout is 2 seconds:

.!!!!

Success rate is 80 percent (4/5), round-trip min/avg/max = 11/17/20 ms

Now Router support Inter-VLAN routing to route VLAN1 to VLAN2 and vice versa


PC>ping 10.100.1.254

Pinging 10.100.1.254 with 32 bytes of data:

Reply from 10.100.1.254: bytes=32 time=39ms TTL=255

…

PC>ping 10.100.2.254



…

PC>ping 10.100.2.1



…

Q&A


Appendix


Packet Tracer Simulation Lab Layer 2 Switching

Technology

Transcript of Packet Tracer Simulation Lab Layer 2 Switching