Master Election - Cisco Catalyst 2975 Software Configuration Manual

Understanding Stacks
Figure 6-1 Creating a Switch Stack from Two Standalone Switches
Figure 6-2 Adding a Standalone Switch to a Switch Stack
For information about cabling and powering switch stacks, see the "Switch Installation" chapter in the
hardware installation guide.

Master Election

The stack master is elected based on one of these factors in the order listed:
1.
2.
3.
4.
Catalyst 2975 Switch Software Configuration Guide
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The switch that is currently the stack master.
The switch with the highest stack member priority value.
We recommend you assign the highest priority value to the switch that you want to be the
Note
master. The switch is then re-elected as master if a re-election occurs.
The switch that is not using the default interface-level configuration.
The switch with the higher priority switch software version. These switch software versions are
listed from highest to lowest priority:
Cryptographic software image
–
Noncryptographic software image
–
If two or more switches in the stack use different software images, a switch running the
noncryptographic image might be selected as the master. A switch running the cryptographic image
takes 10 seconds longer to start than does the switch running the noncryptographic image. The
Chapter 6 Managing Switch Stacks
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