Setup guide

5-21
Cisco 6400 Software Setup Guide
OL-1183-04
Chapter5 Redundancy and SONET APS Configuration
SONET APS for NLC Port Redundancy
To set the APS priority requests, use the following commands in EXEC mode:
Example
In the following example, the system is forced to use the protection channel associated with ATM
interface 1/0/0:
Switch# aps force atm 1/0/0 from working
Verifying the APS Priority Requests
To verify that you successfully set the APS priority requests, use the show aps EXEC command:
Switch# aps force atm 5/1/0 from working
Switch# show aps
ATM5/1/0:APS Lin NR Uni, Failure channel:Working
Active Channel:CHANNEL6/1/0, Channel stat:Force Switch
Port stat (w,p):(Good, Good)
Setting SONET APS Signal Thresholds
You can configure the APS signal bit error rate (BER) thresholds at which the system announces signal
degradation or signal failure.
Command Purpose
Switch# aps lockout atm slot/subslot/port
APS priority level 1 request.
Prevents a working interface from switching to a protection
interface.
Switch# aps force atm slot/subslot/port
from [protection | working]
APS priority level 2 request.
Manually forces the specified interface to the protection or working
interface, unless a request of equal or higher priority is in effect.
Use the working option to force operation from the working
channel to the protection channel.
Use the protection option to force operation from the protection
channel to the working channel.
Switch# aps manual atm slot/subslot/port
from [protection | working]
APS priority level 5 request.
Manually switches an interface to the protection or working
interface, unless a request of equal or higher priority is in effect.
Use the working option to manually switch operation from the
working channel to the protection channel.
Use the protection option to manually switch operation from the
protection channel to the working channel.
Switch# aps clear atm slot/subslot/port
Manually clears all posted APS priority requests created by any of
the APS priority commands.