Specifications

8-7
Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Chapter 8 Switch Maintenance Procedures
Replacing Cards with the Same Card Type
When the entire switch is reset, the nativity check is used to determine which card set gains mastership.
The card set that gains mastership will attempt to go active and will resolve nativity conflicts as
described in Table 8-1. Table 8-2 shows how the nativity check is used to assign mastership to a PXM45
card set.
Manually Responding to Nativity Checks
When the nativity check discovers conflicts that cannot be automatically corrected, you can resolve the
conflict by doing one of the following tasks:
• If you have saved a configuration with the saveallcnf command, you can restore the configuration
with the restoreallcnf command.
• If there is no configuration available, enter the clrallcnf command to establish the PXM45 card sets
as new, unconfigured cards in the chassis.
• If a configuration exists on a hard drive, enter that configuration to configure the front card and
establish nativity for the card set.
If the switch cannot resolve a nativity check conflict and all the cards are operating properly, the PXM45
cards enter stage 1 CLI mode. This mode offers a reduced set of commands that you can use to resolve
the conflict.
When operating in stage 1 CLI mode, you can FTP files to the switch in preparation for a new
configuration or a configuration restore. You can FTP files to the switch using the procedures described
for copying files to the switch in Appendix A, “Downloading and Installing Software Upgrades.”
Table 8-2 Mastership Assignment to PXM45 Card Sets after Nativity Check
Slot 7 Slot 8
Nativity Status
Both cards
non-native
Front card
non-native
Both cards
non-native,
matched serial
nos.
Hard disk card
non-native
Both cards
non-native,
mismatched serial
nos.
Both cards
non-native
Slot 7 Slot 7 Slot 7 Slot 7 Slot 7
Front card
non-native
Slot 8 Slot 7 Slot 7 Slot 7 Slot 7
Both cards
non-native,
matched serial
numbers
Slot 8 Slot 8 Slot 7 Slot 7 Slot 7
Hard disk card
non-native
Slot 8 Slot 8 Slot 8 No active card set. No active card set.
Both cards
non-native,
mismatched serial
numbers
Slot 8 Slot 8 Slot 8 No active card set. No active card set.