Chapter 5 Managing Switch Stacks

Understanding Switch Stacks

Switch Stack Configuration Scenarios

Table 5-2provides switch stack configuration scenarios. Most of the scenarios assume that at least two switches are connected through their StackWise Plus ports.

Table 5-2

Switch Stack Configuration Scenarios

 

 

 

 

 

Scenario

 

 

Result

 

 

 

Stack master election

Connect two powered-on switch stacks

Only one of the two stack masters becomes the new

specifically determined

through the StackWise Plus ports.

stack master. None of the other stack members

by existing stack masters

 

become the stack master.

 

 

 

Stack master election

1. Connect two switches through their

The stack member with the higher priority value is

specifically determined

StackWise Plus ports.

elected stack master.

by the stack member

2. Use the switch stack-member-number

 

priority value

 

 

 

priority new-priority-number global

 

 

 

 

 

 

configuration command to set one stack

 

 

 

member with a higher member priority

 

 

 

value.

 

 

 

3. Restart both stack members at the same

 

 

 

time.

 

 

 

 

Stack master election

Assuming that both stack members have the

The stack member with the saved configuration file

specifically determined

same priority value:

is elected stack master.

by the configuration file

1. Make sure that one stack member has a

 

 

 

 

 

 

default configuration and that the other

 

 

 

stack member has a saved (nondefault)

 

 

 

configuration file.

 

 

 

2. Restart both stack members at the same

 

 

 

time.

 

 

 

 

Stack master election

Assuming that all stack members have the

The stack member with the cryptographic image and

specifically determined

same priority value:

the IP services feature set is elected stack master.

by the cryptographic

1. Make sure that one stack member has

 

software image and the IP

 

the cryptographic image installed and

 

services feature set and

 

the IP services feature set enabled and

 

the IP services feature set

 

that the other stack member has the

 

 

 

 

 

 

noncryptographic image installed and

 

 

 

the IP services feature set enabled.

 

 

 

2. Restart both stack members at the same

 

 

 

time.

 

 

 

 

 

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

5-18

OL-9775-02

 

 

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Cisco Systems 3750E manual Switch Stack Configuration Scenarios, Use the switch stack-member-number