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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
If one or more cards are replaced, the nativity check identifies which cards are new to the switch chassis
and uses the nativity check results to determine which cards hold the valid configuration. This feature
can automatically respond to most configuration mismatches, but some mismatches do require a manual
response.
The following sections describe how the automatic response feature works for standalone and redundant
PXM installations, and how to respond when the system cannot automatically resolve conflicts.
Automatic Response for Standalone PXM Installations
For standalone installations, the nativity check feature detects and responds to PXM cards as shown in
.
Table 10-1
Automatic Response to Nativity Checks in Standalone Installations
Event
PXM Type
Nativity Check Results
Response
PXM front card and hard
disk card have not
changed.
PXM1E
Native front card.
No action is required.
PXM45
Native front card and native hard
disk card.
PXM front card has been
replaced with an
unconfigured card.
PXM1E
New PXM1E.
There is no existing configuration to use.
You must configure the switch or restore a
saved configuration.
PXM45
New PXM45 and native hard disk
card.
The switch builds the PXM45 front card
configuration from the configuration on the
hard disk.
PXM front card has been
replaced with a previously
configured front card from
another chassis.
PXM1E
Non-native front card.
You must manually resolve the
configuration conflict as described in the
“
Manually Responding to Nativity Checks
section which appears later in this chapter.
PXM45
Non-native front card and native
hard disk card.
The switch rebuilds the PXM45 front card
configuration from the configuration on the
hard disk.
The hard disk card has
been replaced with an
unconfigured card.
PXM45
Native front card, new hard disk
card.
The hard disk configuration cannot be
completely built from the configuration on
the front card. You must manually resolve
the configuration conflict as described in
the “
Manually Responding to Nativity
” section which appears later in this
chapter.
The hard disk card has
been replaced with a
previously configured
hard disk card from
another chassis.
PXM45
Native front card, non-native hard
disk card.
The hard disk configuration cannot be
completely rebuilt from the configuration
on the front card. You must manually
resolve the configuration conflict as
described in the “
” section which appears
later in this chapter.
PXM front card and hard
disk card are replaced
with unconfigured cards.
PXM45
New front card and new hard disk
card.
There is no existing configuration to use.
You must configure the switch or restore a
saved configuration.
