Cisco MGX 8950 Specifications Page 477

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10-17
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 10 Switch Maintenance Procedures
Replacing Cards
Replacing PXM45/A or PXM45/B Cards with PXM45/C Cards
PXM45/A and PXM45/B front cards can be replaced with PXM45/C cards while the switch is operating.
If a PXM45 is operating in standalone mode, all calls are interrupted until the PXM45 is replaced and
the PXM45/C card is operating correctly. If the switch is using redundant PXM45s, enter the switchcc
command, if necessary, to ensure that the card you want to replace is operating in standby mode. For
redundant PXM45 cards, you are ready to replace the standby card as soon as the other card becomes
active. You do not need to wait for the standby card to reach standby mode.
Note The PXM45/C card requires a PXM-UI-S3B back card. The PXM45/C will not run with the PXM-UI-S3
back card.
Note Before replacing PXM45 cards with PXM45/C cards, you need to upgrade all cards on the switch to
Release 4 or later.
Note If you are running CWM on your switch, you must upgrade CWM to Release 12 before replacing PXM45
cards with PXM45/C cards.
Gracefully upgrade from a Redundant PXM45 Card Set to a Redundant PXM45/C Card Set
To gracefully upgrade from a redundant PXM45 card set to a redundant PXM45/C card set, use the
following procedure:
Step 1 Enter the dspcds command to verify that the current PXM45 card is running Release 4 or later.
Step 2 If you are running CWM on your network, ensure that all workstations are running CWM Release 12.
Step 3 Enter the saveallcnf command to save the existing configuration on the current PXM45 card, and FTP
that configuration file to a remote location. This ensures that you will be able to go back to your old
switch configuration if you need to.
Step 4 Physically remove the standby PXM45 card set (front and back cards) from the switch on which you are
performing the upgrade, and replace it with the PXM45/C card set. Replace the back cards before
replacing the front cards.
Step 5 Log into the switch and configure boot parameters on the new PXM45/C card.
Step 6 Enter the dspcds command and verify that the PXM45/C comes up in the standby-ready state.
Step 7 Enter the switchcc command to witch the roles of the active and standby cards so you can upgrade the
non-upgraded card in standby mode. The PXM45/C now becomes the active card, and the PXM45
becomes the standby card.
Step 8 Enter the dspcds command to verify that the PXM45/C comes up in the active-ready state.
Step 9 Physically remove the standby PXM45 from the switch on which you are performing the upgrade, and
replace it with the PXM45/C.
Step 10 Enter the dspcds command and verify that the standby PXM45/C comes up in the standby-ready state.
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