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 Cards

The Cisco MGX 8850 and Cisco MGX 8950 switches support redundancy between two cards of the

same type. For PXM45 cards, this redundancy is preconfigured on the switch. To establish redundancy

between two AXSM cards, enter the addred command as described in the “Establishing Redundancy

Between Two AXSM Cards” section in Chapter 3, “Preparing AXSM Cards and Lines for

Communication.”

The following sections describe how to

• Display the redundancy configuration

• Switch operation from one card to the other

• Remove the redundancy between two AXSM cards

Displaying Redundancy Status

To display the redundancy configuration for the switch, use the following procedure.

Step 1 Establish a configuration session at any access level.

Step 2 To view the redundancy status, enter the following command:

mgx8850a.7.PXM.a > dspred

After you enter the command, the switch displays a report similar to the following:

pop2one.7.PXM.a > dspred

pop2one System Rev: 02.00 Feb. 23, 2000 10:59:10 PST

MGX8850 Shelf Alarm: NONE

Primary Primary Primary Secondary Secondary Secondary Redundancy

SlotNum Type State SlotNum Type State Type

------- ------- ------- --------- --------- --------- ----------

7 PXM45 Active 8 PXM45 Empty Resvd 1-1

Switching Between Redundant PXM Cards

When the switch has two PXM45 cards running in active and standby mode, enter the swtichcc

command to swap the roles of the two cards. Typically, you use this command to switch roles so you can

upgrade the hardware or software on one of the cards.

Note The switchcc command is executed only when all cards are operating in active or standby roles. For

example, if the non-active PXM45 is not in standby state, or if an AXSM card is being upgraded, the

switchcc command is not executed.

To switch operation from one redundant PXM card to another, use the following procedure.

Step 1 Establish a configuration session using a user name with SUPER_GP privileges or higher.

Step 2 Check the status of the active and standby cards by entering the dspcds command.