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 Redundancy Between Two Cards
To remove the redundant relationship between two AXSM cards, use the following procedure.
Step 1 Establish a configuration session using a user name with GROUP1_GP privileges or higher.
Step 2 To remove card redundancy, enter the following command after the switch prompt:
mgx8850a.7.PXM.a > delred <primarySlot>
Replace primarySlot with the number of the primary card. You can view the primary and secondary
status of cards by entering the dspred command.
Managing Redundant APS Lines
The Cisco MGX 8850 and Cisco MGX 8950 switches support APS line redundancy. To establish
redundancy between two lines, enter the addapsln command as described in the “Establishing
Redundancy Between Two Lines with APS” section in Chapter 3, “Preparing AXSM Cards and Lines
for Communication.”
The following sections describe how to
• Prepare for Intercard APS
• Display APS line information
• Configure APS lines
• Switch APS lines
• Remove the redundancy between two lines
Prepare for Intercard APS
The following components are required for intercard APS:
• two front cards.
• two back cards for every bay hosting APS lines. All lines on cards used for intercard APS must
operate in APS pairs or use Y cables.
• an APS connector installed between the two back cards for every bay hosting APS lines.
Enter the dspapsbkplane command on both the standby and active card to verify that the APS connector
is plugged in properly. The following example shows the results displayed by the dspapsbkplane
command when the APS connector is in place:
M8850_NY.1.AXSM.a > dspapsbkplane
Line-ID Primary Card Signal Status Secondary Card Signal Status
Slot #1 Slot #2
1.1 PRESENT PRESENT
1.2 PRESENT ABSENT
2.1 PRESENT ABSENT
2.2 PRESENT ABSENT
Remote Front Card : PRESENT