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New Member

switch 2970 - performance issue

Hello,

has somebody an idea what can cause the following behaviour in that environment and how to eliminate this

Environment:

Windows 2000/2003 servers, HP teaming, Cisco switch 2970 12.1(19)

Issue:

transfer of 1GB takes X seconds

transfer of 2GB takes 3X second

transfer of 4GB takes 15X seconds

transfer of 8GB takes 40X seconds

Thank you for any advice, comments

Jan

3 REPLIES
New Member

Re: switch 2970 - performance issue

What is the performance if you disabled the teaming?

New Member

Re: switch 2970 - performance issue

I tried to disable/disolve the teaming. However it didn't influence the mentioned behaviour.

Jan

Re: switch 2970 - performance issue

I think you need to get a baseline here before you start blaming the switch. I suggest you take a crossover cable and connect your test PC to a server and perform your data transfers. I would do about 10 tests for each size and average the results out. Once you have this baseline for each transfer size you should then re-test via the switch.

You will not see any performance increase using teaming (load balancing) as your connections will only ever use the same path. The load-balancing comes into play when you have multiple clients - the algorithm uses either layer-2 or layer-3 information to decide which physical port in a channel will be used. In a connection between 2 devices this will always be the same physical port/link.

HTH

Andy

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