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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 23 Configuring Redundancy
Configuring Redundant Supervisor Engines on the Switch
Synchronizing the Run-Time Image with the Bootstring
This section contains four examples in which the active supervisor engine run-time image is
synchronized with the standby supervisor engine.
Example 1: Run-time image not synchronized
The configuration for example 1 is as follows:
• The active supervisor engine configuration is as follows (if the image in the standby supervisor
engine is identical to the image in the active supervisor engine, the output is the same):
–
Run-time image: bootflash:f1
–
Bootstring: bootflash:f1,1
–
Bootflash: f1
• The time stamp for f1 on the active supervisor engine is the same as f1 on the standby supervisor
engine.
• The expected results are as follows:
–
The active supervisor engine f1 image is not copied to the standby supervisor engine.
–
The standby supervisor engine bootstring is not modified.
–
The standby supervisor engine is not reset.
Example 2: File copied, bootstring changed, standby supervisor engine reset
The configuration for example 2 is as follows:
• The active supervisor engine configuration is as follows:
–
Run-time image: bootflash:f1
–
Bootstring: bootflash:f1,1
–
Bootflash: f1
• The standby supervisor engine configuration is as follows:
–
Run-time image: bootflash:f2
–
Bootstring: bootflash:f2,1
–
Bootflash: f2
• The time stamp for f1 on the active supervisor engine is not the same as f2 on the standby supervisor
engine.
• The expected results are as follows:
–
The active supervisor engine copies f1 to the standby supervisor engine and renames the file
RTSYNC_f1.
–
The standby supervisor engine bootflash is modified to the following: f2, RTSYNC_f1.
–
The standby supervisor engine bootstring is modified to the following:
bootflash:RTSYNC_f1,1;f2,1;.
–
The standby supervisor engine is reset.
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