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cat 4506 & cisco 3750

Unanswered Question
Jan 26th, 2007
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Appreciate some advise on the following:

1) I have a cat 4506 with 2 modules. I believe I can insert the new 3rd module without any downtime as it is hot swappable. Need to confirm.

2) I have 2 stackable 3750. Intent to insert a 3rd stackable.

- Is it possible to insert a 3rd stackable 3750 without any downtime?

- when I insert the 3rd switch, it would auto detect the master and treat itself(3rd switch) as slave?

- I believe the existing configuration of the 2 switches will still be there?



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thestagman Fri, 01/26/2007 - 07:19
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The 4506 should be hot swappable. However with regards to the 3750 switches. Be careful, I once added a new switch to a stack and it rebooted the master.

glen.grant Fri, 01/26/2007 - 07:56
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Move cables to the new cables one at a time . Also make sure the new switch is powered off until you get all cables attached . If you want to keep a particular switch as master then give that switch a stack priority of 15 .

neo_christina Mon, 01/29/2007 - 06:32
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Hi glen,

there is an existing stack of 3750 (x2) with one switch priority having 15 and the other having 10. i wanted to add a third switch to the stack.

1) do i need to power off the existing stack before i can add a third switch?

2) what is the default switch priority? must i configure the switch priority on third switch before adding to the stack?



neo_christina Mon, 01/29/2007 - 07:00
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from the documentation, it says

Add a stack member

1. Power off the new switch.

2. Through their StackWise ports, connect the new switch to a powered-on switch stack. (meaning i can unplug one of the cable from the powered-on switch stack and connect to the new switch? it means without any downtime?)

3. Power on the new switch.

The stack master is retained. The new switch is added to the switch stack.

Kindly advise the above. Appreciate if someone can help to advise some unforseen incidents.




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