Specifications

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Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Chapter 7 Switch Operating Procedures
Managing Redundant APS Lines
Removing APS Redundancy Between Two Lines
To remove the redundant APS line relationship between two lines, enter the delapsln command as
described in the following procedure.
Step 1 Establish a configuration session using a user name with GROUP1_GP privileges or higher.
Step 2 To remove redundancy between the two lines, enter the following command after the switch prompt:
mgx8850a.7.PXM.a > delapsln <workingIndex>
Select the working line to delete by replacing <workingIndex> with the location of the working line
using the format slot.bay.line. In the following example, the delapsln command removes the APS
redundancy between the working line at Card 9, Bay 2, Line 1 and the protection line associated with it.
pop20one.9.AXSM.a > delapsln 9.2.1
Troubleshooting APS Lines
Port lights on AXSM and AXSM/B front cards indicate the receive status of APS lines. The active front
card always displays the status of the active line. The standby card always displays the status of the
inactive line. If only one APS line fails, the line failure LED is always displayed on the standby front
card.
Caution When the active front card and the active line are in different slots and the inactive line has failed, it is
easy to incorrectly identify the failed line as the line in the standby slot. To avoid disrupting traffic
through the active line, verify which physical line is at fault before disconnecting the suspect line.
If the active line fails and the standby line is not available, the switch reports a critical alarm.
If the active line fails and the standby line takes over, the former standby line becomes the new active
line, and the switch reports a major alarm.
Table 7-7 Options for switchapsln Command
Option Value Description
switchOption 1Clear.
2 Lockout of protection.
3 Forced working->protection.
4 Forced protection->working.
5 Manual working->protection.
6 Manual protection->working; applies only to 1+1 mode.
serviceSwitch 0 or 1 0 switches specified line. 1 switches all lines.