Specifications

Configuring the 12E/2FE Interfaces 6-7
Configuring Interfaces
In the following procedure, press the Return key after each step unless otherwise noted. At any time
you can exit the privileged level and return to the user level by entering disable at the prompt as
follows:
Router# disable
Router>
Note Interface port numbers 0 and 1 of the 12E/2FE port adapter are identified by the system as
Fast Ethernet interfaces, while interface port numbers 2 through 13 are identified as Ethernet
interfaces.
Step 1 At the privileged-level prompt, enter configuration mode and specify that the console
terminal will be the source of the configuration subcommands as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Step 2 Specify a bridge-group number and Spanning-Tree Protocol by entering the
bridge-group command. The following examples are for bridge group 10, 20, and 30,
and the IEEE Spanning-Tree Protocol:
Router(config)# bridge 10 protocol ieee
Router(config)# bridge 20 protocol ieee
Router(config)# bridge 30 protocol ieee
Router(config)# bridge 40 protocol ieee
Note The 12E/2FE port adapter supports up to four bridge groups.
The 12E/2FE port adapter supports DEC and IEEE Spanning-Tree Protocols; however,
we recommend using the IEEE protocol when configuring bridge groups.
Step 3 Assign an interface to a bridge group by entering the interface fastethernet (for interface
port numbers 0 and 1) or interface ethernet (for interface port numbers 2 through 13)
command, and then the bridge-group command.
After assigning an interface to a bridge group, change the shutdown state to up and return
to configuration mode to enable the interface. The following examples are for the first
four interfaces of a 12E/2FE port adapter in port adapter slot 3, and the bridge
groups 10 and 20.