Specifications

Configure APS Working and Protect Interfaces
Configuring Serial Interfaces IC-101
Perform the first task in the following section to configure APS and POS (The other tasks are
optional.):
• Configure APS Working and Protect Interfaces
• Configure Other APS Options
• Monitor and Maintain APS
• Configure SONET Alarm Reporting
• Configure Protection Switch
Configure APS Working and Protect Interfaces
This section describes how to configure a working and protect interface. The commands listed in this
section are required. Configure the working interface before configuring the protect interface to
avoid the protect interface from becoming the active circuit and disabling the working circuit when
it is finally discovered.
To configure the working interface, use the following commands beginning in global configuration
mode:
Note If a router has two or more protect interfaces, the aps group command for each interface must
precede the corresponding aps protect command.
To configure the protect interface, use the following commands beginning in global configuration
mode:
Step Command Purpose
1 interface pos slot/port-adapter/port Specify the POS interface to be configured as the
working interface and enter interface configuration
mode.
2 aps working circuit-number Configure this interface as a working interface.
3 end Exit configuration mode.
4 show controller pos
show interface pos
show aps
Verify that the interface is configured correctly.
Step Command Purpose
1 interface pos slot/port-adapter/port Specify the POS interface to be configured as the
protect interface and enter interface configuration
mode.
2 aps protect circuit-number ip-address Configure this interface as a protect interface. Specify
the IP address of the router that contains the working
interface.
3 end Exit configuration mode.
4 show controller pos
show interface pos
show aps
Verify that the interface is configured correctly.