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Chapter 14
Configuring Automatic Protection Switching
Multirouter Automatic Protection Switching
Example 14-2
shows the configuration of multirouter APS with static routes on ATM interfaces. Router
A is configured with the working interface, and Router B is configured with the protect interface. If the
working interface on Router A becomes unavailable, the connection automatically switches over to the
protect interface on Router B. Note that 172.16.1.0 is the address of the traffic destination network and
that the route over the Peer Group Protocol (PGP) link has a higher distance metric number than the
multirouter APS working interface.
Example 14-2 Configuring MR-APS with Static Routes
Router A (working interface)
configure terminal
interface atm 1/0/0
ip address 10.7.7.7 255.255.255.0
ip route static update immediate
carrier-delay msec 8
!
redundancy
associate slot 2 mr-aps
!
interface atm 2/0/0
aps group 1
aps working 1
ip route static update immediate
carrier-delay msec 8
!
ip route 172.16.1.0 255.255.255.0 atm 2/0/0 10
ip route 172.16.1.0 255.255.255.0 atm 1/0/0 10.7.7.6 20
Router B (protect interface)
configure terminal
interface atm 1/0/0
ip address 10.7.7.6 255.255.255.0
ip route static update immediate
carrier-delay msec 8
!
redundancy
associate slot 3 mr-aps
!
interface atm 3/0/0
aps group 1
aps protect 1 10.7.7.7
ip route static update immediate
carrier-delay msec 8
!
ip route 172.16.1.0 255.255.255.0 atm 3/0/0 10
ip route 172.16.1.0 255.255.255.0 atm 1/0/0 10.7.7.7 20
Cisco 10000 Series Router Software Configuration Guide
14-26
OL-2226-23
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Troubleshooting
