PurposeCommand or Action
Configures the IP address and subnetmask of the subinterface.Router(config-subif)# ip address ip-address
subnetmask
Step 2
Configures a permanent virtual circuit with the specified VPI ID
and VCI ID.
Router(config-subif)# pvc vpi-id/vci-id
Step 3
Specifies the AAL for the PVC.Router(config-if-atm-vc)# encapsulation
{aal5mux | aal5snap}
Step 4
• aal5mux—AAL5+MUX encapsulation
• aal5snap—AAL5+LLC/SNAP encapsulation
Configuring Pseudowire Redundancy
CEoP SPAs support the L2VPN Pseudowire Redundancy feature, which provides backup service for the ATM
and CEM pseudowires. Configuring a Pseudowire Redundancy is an optional task. The L2VPN Pseudowire
Redundancy feature enables the network to detect a failure and reroute the Layer 2 (L2) service to another
endpoint that can continue to provide the service. This feature provides the ability to recover from a failure
of either the remote PE router or the link between the PE and CE routers.
Configure pseudowire redundancy by configuring two pseudowires for an ATM interface, a primary pseudowire
and a backup (standby) pseudowire. If the primary pseudowire fails, the router uses the backup pseudowire
in its place. When the primary pseudowire becomes operational again, the backup pseudowire is stopped and
the router resumes the use of the primary pseudowire.
The following figure shows an example of pseudowire redundancy.
Figure 12: Pseudowire Redundancy
The following is a summary of the steps to configure pseudowire redundancy on the SPA-2CHT3-CE-ATM.
You must configure the backup pseudowire such that it connects to a router that is different from the one
the primary pseudowire connects to.
Note
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
490 OL-14127-17
Configuring the Circuit Emulation over Packet Shared Port Adapter
Configuring Pseudowire Redundancy
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