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Cisco ME-3600X-24CX Series Switch Chassis Configuration Guide
OL-27620-01
Chapter 5 Configuring Pseudowire
Configuring Pseudowire Redundancy
Configuring Pseudowire Redundancy
A backup peer provides a redundant pseudowire (PW) connection in the case that the primary PW loses
connection; if the primary PW goes down, the Cisco ME 3600X 24CX Series Switch diverts traffic to
the backup PW. This feature provides the ability to recover from a failure of either the remote PE router
or the link between the PE router and CE router.
Figure 5-3
shows an example of pseudowire redundancy.
Figure 5-3
Pseudowire Redundancy
Note
You must configure the backup pseudowire to connect to a router that is different from the primary
pseudowire.
Follow these steps to configure a backup peer:
Primary
pseudowire
PE1
CE1
PE2
CE2
Backup
pseudowire
135058
Redundant
attachment
circuits
Command
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Step 2
configure terminal
Enters global configuration mode.
Step 3
pseudowire-class [pw-class-name]
Specify the name of a Layer 2 pseudowire class and enter pseudowire
class configuration mode.
Step 4
encapsulation mpls
Specifies MPLS encapsulation.
Step 5
interface cem
card/number
Enters configuration mode for the cem interface.
Note
The card number is always 0.
Step 6
Router(config-if)# xconnect 1.1.1.2
101 encapsulation mpls
Binds the Ethernet port interface to an attachment circuit to create a
pseudowire.
Step 7
Router(xconnect)# backup peer
peer-router-ip-address vcid
[pw-class pw-class name]
Defines the address and VC of the backup peer.
Step 8
exit
Exits configuration mode.