Specifications

Configuring the 12E/2FE Interfaces
PA-12E/2FE Ethernet Switch 10BASE-T and 100BASE-TX Port Adapter Installation and Configuration
6-8
Note The 12E/2FE port adapter supports store-and-forward or cut-through packet
switching technology between interfaces within the same bridge group;
store-and-forward is the default. In the following example, the cut-through [receive |
transmit] command is used to configure each interface for cut-through switching of
received and transmitted data. To return each interface to store-and-forward switching,
use the no cut-through command.
Router(config)# interface fastethernet 3/0
Router(config-if)# bridge-group 10
Router(config-if)# cut-through
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3/0, changed
state to up
%LINK-3-UPDOWN: Interface FastEthernet3/0, changed state to up
Router(config)# interface fastethernet 3/1
Router(config-if)# bridge-group 10
Router(config-if)# cut-through
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3/1, changed
state to up
%LINK-3-UPDOWN: Interface FastEthernet3/1, changed state to up
Router(config)# interface ethernet 3/2
Router(config-if)# bridge-group 20
Router(config-if)# cut-through
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet3/2, changed state to up
%LINK-3-UPDOWN: Interface Ethernet3/2, changed state to up
Router(config)# interface ethernet 3/3
Router(config-if)# bridge-group 20
Router(config-if)# cut-through
Router(config-if)# no shutdown
Router(config-if)# exit
Router(config)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet3/3, changed state to up
%LINK-3-UPDOWN: Interface Ethernet3/3, changed state to up
Note For the Cisco 7206 router shelf, the interface specified in the above examples
would include a shelf number. For example, the command interface fastethernet 5/3/0
would specify the first 12E/2FE interface in port adapter slot 3 of Cisco 7206 router
shelf 5.
Step 4 Repeat Step 3 for the remaining 12E/2FE interfaces and bridge groups.
Step 5 If you plan to enable integrated routing and bridging on the bridge groups, enter the
command bridge irb as follows:
Router(config)# bridge irb