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HP Procurve switch stacking

Posted on 2009-04-28
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I have three HP procurve switches (2424M) that have a gigabit module in each with a short (foot long) fiber strand connecting the modules and thus connecting the switches. A few months ago I purchased a Procurve 3500yl (48 port). I linked the top (first in the series) 2424M switch via a CAT6 cable to the new 3500. I am considering revising how these are connected. My thought is to connect each 2424M via individual CAT6 cables into the 3500, thus reducing the amount of traffic going through the single connection I have now between the top 2424M and the 3500. Does this make sense? Also, should I remove (or at least disconnect) the gigabit modules that presently connect each 2424M together? I suspect if I do not do that traffic will still pass through the other 2424Ms using the gigabit modules before getting to the 3500. Eventually, I plan to get another 3500 and link them as HP intends, but for now I have to work with these 2424Ms.
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Question by:ks157
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steveoskh earned 2000 total points
ID: 24255352
I would connect all the 2424's directly to the new switch.  You will need to remove the current fiber links between them or turn on spanning tree support.   I would suggest contacting HP Newtwork Design Center  http://www.procurve.com/customercare/services/design-center/index.htm
They were fantastic on a recent expansion we did.  Provide details and they will come back with all the info you need including any firmware upgrade required.  And it's free!
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by:ks157
ID: 24259514
Thanks. Actually, I did call them a few hours after my post here. They suggesting leaving the gigabit modules connected and configuring 4 ports in one of the 2424's as a trunk, thus providing in essence a 400MBps link between the three 2424's and the 3500. Yes, that is one of the things I appreciate about HP's networking products, the many free perks that come with it.
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