Cisco WS-X6066-SLB-APC - Content Switching Module Software Manual page 490

Configuring Redundant Supervisor Engines
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Synchronizing the Boot Images on the Active and Standby Supervisor Engines
This section contains four examples in which the bootstrings on the active and standby supervisor
engines are synchronized.
Example 1: Unable to allocate the boot image
The configuration for this example is as follows:
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Catalyst 6000 Family Software Configuration Guide—Releases 6.3 and 6.4
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The standby supervisor engine configuration is as follows:
Runtime image:
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bootflash:f2
Boot string:
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bootflash:f2,1;
Bootflash:
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f2, f3, f4
The time stamp for f1 on the active supervisor engine is not the same as f2 on the standby supervisor
engine. The f2 time stamp is older than f3, and the f3 time stamp is older than f4.
The expected results are as follows:
The active supervisor engine runtime image is synchronized with the standby supervisor engine.
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The active supervisor engine attempts to copy its f1 image to the standby supervisor engine.
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Because there is not enough space on the standby supervisor engine bootflash, the redundant
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synchronization function finds the oldest file, deletes it, and squeezes bootflash.
The active supervisor engine copies the f1 image to the standby supervisor engine and renames
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it RTSYNC_f1.
The standby supervisor engine bootflash is modified to the following: f3, f4, RTSYNC_f1.
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The standby supervisor engine boot string is modified to the following: RTSYNC_f1,1;f2,1;.
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The standby supervisor engine is reset.
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The active supervisor engine configuration is as follows:
– Runtime image:
bootflash:f1
– Boot string:
bootflash:f1,1;
– Bootflash:
f1
The standby supervisor engine configuration is as follows:
Runtime image:
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bootflash:f1
Boot string:
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bootflash:f1,1;
Bootflash:
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f1
The time stamp for f1 on the active supervisor engine is the same as f1 on the standby supervisor
engine.
The system attempts to modify the active supervisor engine bootstring to the following: f2,1;.
The expected results are as follows:
The active supervisor engine is unable to allocate f2, causing the synchronization to fail.
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An error is recorded in syslog.
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(less than 1 MB left on device)
Chapter 22 Configuring Redundancy
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