Specifications
Configure Automatic Protection Switching of Packet-over-SONET Circuits
IC-102
Cisco IOS Interface Configuration Guide
Configure Other APS Options
To configure the other APS options, use any of the following commands in interface configuration
mode. The commands listed in this section are optional.
Monitor and Maintain APS
To provide information about system processes, the Cisco IOS software includes an extensive list of
EXEC commands that begin with the word show, which, when executed, display detailed tables of
system information. Following is a list of some of the common show commands for the APS feature.
Use these commands in privileged EXEC mode to display the information described:
Command Purpose
aps authenticate string Enable authentication and specify the string that must
be present to accept any packet on the OOB
communication channel.
aps force circuit-number Manually switch the specified circuit to a protect
interface, unless a request of equal or higher priority is
in effect.
aps group group-number Allow more than one protect/working interface group
to be supported on a router.
aps lockout circuit-number Prevent a working interface from switching to a protect
interface.
aps manual circuit-number Manually switch a circuit to a protect interface, unless
a request of equal or higher priority is in effect.
aps revert minutes Enable automatic switchover from the protect interface
to the working interface after the working interface
becomes available.
aps timers seconds1 seconds2 Change the time between hello packets and the time
before the protect interface process declares a working
interface’s router to be down (that is, seconds1 for the
hello time, and seconds2 for the hold time).
aps unidirectional Configure a protect interface for unidirectional mode.
Command Purpose
show aps Display information about the automatic protection
switching feature.
show controllers pos Display information about the hardware.
show interface pos Display information about the interface.