Using Packet Over SONET (POS) Modules
December 2000 6 - 29
Figure 6.8 Configuration with multiple POS APS interfaces
In this configuration, interface 3/1 on BigIronB serves as the protect interface to working interface 2/1 on BigIronA,
and interface 2/2 on BigIronA serves as the protect interface to working interface 3/2 on BigIronB. To implement
this configuration, you place each APS working/protect circuit pair in a separate APS group.
The following commands configure the working interface for APS group 50 and protect interface for APS group 60
on BigIronA:
BigIronA(config)# interface loopback 1
BigIronA(config-lbif-1)# ip address 10.0.0.1/24
BigIronA(config-lbif-1)# exit
BigIronA(config)# interface pos 2/1
BigIronA(config-posif-2/1)# aps group 50
BigIronA(config-posif-2/1)# aps working 1
BigIronA(config-posif-2/1)# exit
BigIronA(config)# interface pos 2/2
BigIronA(config-posif-2/2)# aps group 60
BigIronA(config-posif-2/2)# aps protect 1 10.0.0.2
BigIronA(config-posif-2/2)# exit
The following commands configure the working and protect interfaces on BigIronB:
BigIronB(config)# interface loopback 2
BigIronB(config-lbif-2)# ip address 10.0.0.2/24
BigIronB(config-lbif-2)# exit
BigIronB(config)# interface pos 3/1
BigIronB(config-posif-3/1)# aps group 50
BigIronB(config-posif-3/1)# aps protect 1 10.0.0.1
BigIronB(config-posif-3/1)# exit
BigIronB(config)# interface pos 3/2
BigIronB(config-posif-3/2)# aps group 60
BigIronB(config-posif-3/2)# aps working 1
BigIronB(config-posif-3/2)# exit
Syntax: aps group <group-number>
The aps group command allows more than one APS working/protect interface pair to be configured on the
device. The default group number is 0. The aps group command is required on both the working and protect
interfaces.
BigIron
BigIron
SONET ADM
Working Interface POS 2/1
APS Group 50
Protect Interface POS 2/2
APS Group 60
Protect Interface POS 3/1
APS Group 50
Working Interface POS 3/2
APS Group 60
BigIronA
BigIronB
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