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Chapter 2

Connecting the Switch Block

spantree Spanning tree subsystem

vlan-membership VLAN membership configuration

You can switch between interfaces by using the int e 0/# command.

Notice that we demonstrate below commands with spaces or without--it
makes no difference.

To configure the two FastEthernet ports, the command is interface

fastethernet 0\#

. You cannot go to the FastEthernet ports from the

10BaseT ports without typing exit to go back one level:

Todd1900EN(config-if)#int e 0/2

Todd1900EN(config-if)#int e0/3

Todd1900EN(config-if)#exit

Todd1900EN(config)#int fastEthernet ?

<0-0> FastEthernet IEEE 802.3

Todd1900EN(config)#int fastEthernet 0/?

<26-27> FastEthernet IEEE 802.3

Todd1900EN(config)#int fastEthernet 0/26

Todd1900EN(config-if)#int fast 0/27

Todd1900EN(config-if)# [control+Z]

You can view the ports with the show interface command:

Todd1900EN#sh int e0/1

Ethernet 0/1 is Suspended-no-linkbeat

Hardware is Built-in 10Base-T

Address is 0030.80CC.7D01

MTU 1500 bytes, BW 10000 Kbits

802.1d STP State: Forwarding Forward Transitions: 1

[output cut]

Todd1900EN#sh int f0/26

FastEthernet 0/26 is Suspended-no-linkbeat

Hardware is Built-in 100Base-TX

Address is 0030.80CC.7D1A

MTU 1500 bytes, BW 100000 Kbits

802.1d STP State: Blocking Forward Transitions: 0

[output cut]

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