Configuring Transparent Bridging

Transparent and SRT Bridging Configuration Task List

Note If you plan to use a PA-12E/2FE interface to boot from a network (TFTP), ensure that the interface is configured for a loop-free environment, an IP address is configured for the interface’s bridge-group virtual interface, and system boot image 11.2(10)P is installed on your router (use the show version command to view your router’s system boot image). Then, before booting from the network server, use the bridge-groupbridge-group number spanning-disabledcommand to disable the Spanning-Tree Protocol configured on the interface to keep the TFTP server from timing out and closing the session.

For detailed information about boot from a network (TFTP), loading a system image from a network server, and configuring the Spanning-Tree Protocol on your Cisco 7200 series router, refer to the PA-12E/2FE Ethernet Switch10BASE-T and 100BASE-TX Port Adapter Installation and Configuration that accompanies the hardware and to the Cisco IOS Configuration Fundamentals Configuration Guide and Cisco IOS Bridging and IBM Networking Configuration Guide publications.

For information on other commands that can be used to configure a PA-12E/2FE port adapter, refer to the “Configuring Interfaces” chapter in the Cisco IOS Configuration Fundamentals Configuration Guide.

For PA-2E/2FE port adapter configuration examples, see “Configuration of Transparent Bridging for PA-12E/2FE Port Adapter Example” and “Configuration of IRB for PA-12E/2FE Port Adapter Example” in the Transparent and SRT Bridging Configuration Examples section.

Configuring the PA-12E/2FE Port Adapter

This section provides instructions for a basic configuration. You might also need to enter other configuration commands depending on the requirements for your system configuration and the protocols you plan to route on the interface.

To configure the interfaces on the PA-12E/2FE port adapter, perform the following tasks in global configuration mode:

 

Command

Purpose

Step 1

 

 

bridge bridge-groupprotocol ieee

Specifies the type of Spanning-Tree Protocol. The PA-12E/2FE port

 

 

adapter supports DEC and IEEE Spanning-Tree Protocols; however,

 

 

we recommend using the IEEE protocol when configuring bridge

 

 

groups.

Step 2

 

 

interface fastethernet slot/port

Enters the interface you want to configure.

 

(for ports 0 and 1)

 

 

interface ethernet slot/port

 

 

(for ports 2 through 13)

 

Step 3

 

 

bridge-group bridge-group

Assigns a bridge group to the interface.

Step 4

 

 

cut-through [receive transmit]

Optionally, configures the interface for cut-through switching

 

 

technology. The default is store-and-forward.

Step 5

 

 

full-duplex

Optionally, if an attached device does not support autosensing or

 

 

autonegotiation, configures the transmission mode for full-duplex.

 

 

The default is half-duplex.

Step 6

 

 

no shutdown

Changes the shutdown state to up.

Step 7

 

 

exit

Returns to configuration mode.

 

 

 

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-56

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Cisco Systems BC-23 manual Configuring the PA-12E/2FE Port Adapter, BC-56

BC-23 specifications

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