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Author Topic: Which switch to be the host?  (Read 2432 times)

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Offline JaySmith

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Which switch to be the host?
« on: June 08, 2014, 12:01:07 PM »
I know the newer model should go first, but does it matter which of the two of the same models goes first?

There are two switches in the stack, 5520-24T and 5520-48T. The 24 will host PoE devices such as ip cameras, telecom/intercom, etc. The 48 will host vlan's, lags, and be connected to the vm servers, shared storage, san, etc.

Does it matter which one is the base?


Offline Flintstone

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Re: Which switch to be the host?
« Reply #1 on: June 09, 2014, 04:23:44 AM »
Hi JaySmith,

No, it does not matter which one is base as they are the same family and same CPU.

CheerZ

Offline Telair

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Re: Which switch to be the host?
« Reply #2 on: June 09, 2014, 12:14:43 PM »
It doesn't matter if you have a 24-port or 48-port 5520 switch as base as they both have the same CPU, memory and flash amounts.  In a mixed stack, the order of preference for the base unit is:

1) 5600
2) 5530/5520

I know the 5520 and 5530 have the same internal hardware, but our Nortel SE at the time told us to use 5530's as the base if we had them.

Offline JaySmith

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Re: Which switch to be the host?
« Reply #3 on: June 11, 2014, 07:01:27 AM »
Thanks for the info. I was just curious whether the load on each switch would have anything to do with performance for being the base.

Offline Telair

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Re: Which switch to be the host?
« Reply #4 on: June 11, 2014, 09:48:49 AM »
It doesn't take any more processing power to run a 48-port than a 24-port switch.  So I wouldn't have a problem with making a 24-port switch the base unit.  You can always look at the CPU loads on all the switches in a stack in EDM if you are curious.

Offline Michael McNamara

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Re: Which switch to be the host?
« Reply #5 on: June 22, 2014, 10:26:52 AM »
You will see the "management" slow down as you add more and more switches to a stack so yes there's a 'processing' load as the base switch needs to manage more and more interfaces in the stack.

I believe there is a hardware difference (outside of the optic interfaces) between the 5530 and 5520 although I can't remember if I heard that from Avaya corporate (during a product briefing) from the PLM or from an Avaya engineer.

Cheers!
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