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Chapter 14
Configuring Automatic Protection Switching
Restrictions for MR-APS
In Cisco IOS Releases 12.3(7)XI2 and 12.2(28)SB, MR-APS is supported for the following line cards:
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In Cisco IOS Release 12.0(26)S, MR-APS is also supported for the following line cards:
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Configuration Tasks for MR-APS
To configure the MR-APS feature, perform the following tasks:
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Configuring MR-APS on Unchannelized Line Cards
To configure MR-APS on unchannelized line cards, enter the following commands beginning in global
configuration mode.
Command
Step 1
Router(config)# redundancy
Step 2
Router(config-r)# associate slot slot-one
mr-aps
Step 3
Router(config-r)# exit
Step 4
Router(config)# interface type number
Step 5
Router(config-if)# aps group group-number
Step 6
Router(config-if)# aps working circuit-number
Step 7
Router(config-if)# exit
Step 8
Repeat steps 1 through 5 on the second router to configure the protect interface. Substitute the appropriate slot
numbers, interface types, and interface numbers. After you complete step 5, go to step 9.
OL-2226-23
4-Port OC3/STM-1 ATM line card
1-Port OC-12 ATM line card
1-Port Channelized OC-12/STM-4 line card
4-Port Channelized OC-3/STM-1 line card
6-Port OC-3/STM-1 Packet over SONET line card
1-Port OC-12 Packet over SONET line card
Configuring MR-APS on Unchannelized Line Cards, page 14-21
Configuring MR-APS on Channelized Line Cards, page 14-22
Configuring MR-APS with Static Routes, page 14-23
Multirouter Automatic Protection Switching
Purpose
Enters redundancy configuration mode, which allows you
to associate two line cards as a redundant pair.
Logically associates slots for APS processor redundancy.
To allow MR-APS to operate, you must associate a slot on
the working interface of one router and with a
corresponding protect interface on a second router.
Exits redundancy configuration mode and returns to global
configuration mode.
Specifies the interface type and number. Enters interface
configuration mode.
Permits more than one APS protect and working interface
to be supported on a router.
Configures an interface as a working interface.
Exits interface configuration mode and returns to global
configuration mode.
Cisco 10000 Series Router Software Configuration Guide
14-21
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Troubleshooting
