Cisco 10000-2P2-2DC Software Guide - Page 335
Threshold Commands, Specifying SR-APS Signal Degrade BER Threshold
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Chapter 14 Configuring Automatic Protection Switching Single-router Automatic Protection Switching Command Router# aps lockout [POS | SONET] slot#/subslot#/port# Router# aps manual [POS | SONET] slot#/subslot#/port# from [working | protection] Purpose Prevents a channel from automatically switching to the active, working, or protection state. Manually switches from the working channel to the protection channel, or from the protection channel to the working channel. from working-Manually switches from the working channel to the protection channel. Note This command has no effect if the protection channel is currently the active channel. from protection-Manually switches from the protection channel to the working channel. Note This command has no effect if the working channel is currently the active channel. Example 14-3 Clearing SR-APS Commands on a Channel Example 14-3 shows how to clear SR-APS commands on redundant Channelized OC-12 POS cards in slots 5 and 6: Router# aps clear pos 5/0/0 Example 14-4 Forcing a SR-APS Switch Example 14-4 shows how to force a switch from the working channel to the protection channel: Router# aps force POS 5/0/0 from working Example 14-5 Performing a Manual SR-APS Switch Example 14-5 show how to manually switch the active channel from the working channel to the protection channel: Router# aps manual POS 5/0/0 from working Threshold Commands Threshold commands allow you to specify criteria that trigger a cutover. In addition to the criteria set by these commands, cutovers are triggered by Section Loss of Signal (SLOS) critical alarms, Section Loss of Frame (SLOF) critical alarms, and Line Alarm Indicate Signal (LAIS) major alarms. Specifying SR-APS Signal Degrade BER Threshold Use the aps signal-degrade BER threshold command to modify the bit error rate threshold that, if exceeded, triggers an APS cutover. aps signal-degrade BER threshold value [no] aps signal-degrade Where value can be in the range of 10-5 to 10-9. Enter this value as a single digit between 5 and 9. The default signal degrade BER threshold value is 10-6. OL-2226-23 Cisco 10000 Series Router Software Configuration Guide 14-31
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