Configuring Basic Bridging; Chapter 6 Configuring Bridge - Cisco ONS 15454 SDH Configuration Manual

Configuring Basic Bridging

Configuring Basic Bridging
Use the following steps to configure bridging:
Command
Step 1
Router(config)# no ip routing
Step 2
Router(config)# bridge
bridge-group-number [protocol
{drpi-rstp | rstp | ieee}]
Step 3
Router(config)# bridge
bridge-group-number priority
number
Step 4
Router(config)# interface type
number
Step 5
Router(config-if)# bridge-group
bridge-group-number
Step 6
Router(config-if)# no shutdown
Step 7
Router(config-if)# end
Step 8
Router# copy running-config
startup-config
Figure 6-1
Example 6-2
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
6-2
Spanning tree is not mandatory for an ML-Series card bridge group. But if it is configured, a
separate spanning-tree process runs for each configured bridge group. A bridge group
establishes a spanning tree based on the bridge protocol data units (BPDUs) it receives on only
its member interfaces.
shows a bridging example.
shows the configuration of ML-Series card B.
Purpose
Enables bridging of IP packets. This command needs to be
executed once per card, not once per bridge-group. This step is
not done for integrated routing and bridging (IRB).
Assigns a bridge group number and defines the appropriate
spanning-tree type:
bridge-group-number can range from 1 to 4096.
drpri-rstp is the protocol used to interconnect dual RPR
•
interconnect to protect from node failure
rstp is the IEEE 802.1W Rapid Spanning Tree.
•
ieee is the IEEE 802.1D Spanning Tree Protocol.
•
Spanning tree is not mandatory for an ML-Series card
Note
bridge group. But configuring spanning tree blocks
network loops.
(Optional) Assigns a specific priority to the bridge, to assist in
the spanning-tree root definition. Lowering the priority of a
bridge makes it more likely the bridge is selected as the root.
Enters interface configuration mode to configure the interface of
the ML-Series card.
Assigns a network interface to a bridge group.
Changes the shutdown state to up and enables the interface.
Returns to privileged EXEC mode.
(Optional) Saves your entries in the configuration file.
Example 6-1 shows the configuration of ML-Series card A.
Chapter 6 Configuring Bridges