Cisco 3750 - Catalyst EMI Switch Manuel de démarrage - Page 10

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Powering Considerations

Consider the following guidelines before you power the switches in a stack:

•

The sequence in which the switches are

initially powered on might affect the switch

that becomes the stack master.

•

If you want a particular switch to become the

stack master, power on that switch first. This

switch becomes the stack master and remains

the stack master until a master re-election is

required. After 20 seconds, power on the

remaining switches in the stack.

Note

Stack master elections occur over a 10-second timeframe on switches running releases earlier

than Cisco IOS Release 12.2(20)SE3.

For more information on stack master elections, see the "Managing Switch Stacks" chapter

in the switch software configuration guide.

•

If you have no preference for which switch

becomes the stack master, power on all the

switches in the stack within a 20-second

timeframe. These switches participate in the

stack master election. Switches powered on

after the 20-second timeframe do not

participate in the election.

•

Power off a switch before you add it to or

remove it from an existing switch stack.