3750 Stack utilization

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Yea I saw that command...I guess i don't understand how to read the output. :)

Switch Asic Rx Queue-1 Rx Queue-2 Rx Queue-3 Rx Queue-4 Total

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1 0 1250220656 737509322 131742031 0 2119472009

1 1 8 0 -1216228079 0 -1216228071

1 2 8 0 113849949 0 113849957

1 3 8 0 393453140 0 393453148

1 4 8 0 - 308391361 0 - 308391353

1 5 8 0 -2080199764 0 -2080199756

1 6 8 0 1532677337 0 1532677345

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Switch 1 Total: 554633279

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2 0 1244030790 747060438 0 0 1991091228

2 1 8 0 -1564944181 0 -1564944173

2 2 8 0 76389016 0 76389024

2 3 8 0 469796624 0 469796632

2 4 8 0 524559872 0 524559880

2 5 8 0 1345695311 0 1345695319

2 6 8 0 - 377692604 0 - 377692596

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Switch 2 Total: -1830071982

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3 0 1137030913 869068912 38422167 0 2044521992

3 1 8 0 88469136 0 88469144

3 2 8 0 52744350 0 52744358

3 3 8 0 1636555667 0 1636555675

3 4 8 0 -2006883211 0 -2006883203

3 5 8 0 2077661011 0 2077661019

3 6 8 0 -1146969797 0 -1146969789

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Switch 3 Total: -1548868100

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Total frames sent to stack ring : 1470660493

What does that mean...what's the current utilization?

Edison Ortiz Fri, 05/16/2008 - 12:52

The value indicated in the output reflects the number of frames that are sent from each switch to the stack-ring.

You also get information regarding the received queues per stack member.

It's not as straightforward as viewing input/output packets from an single interface but that's the only output available to find out the amount of traffic sent to/from the stack.

As per your original post, what's the driving factor from moving from a stacking solution to a standalone solution such as the 3560G?

HTH,

__

Edison.

Our 3750 switches are only 24 port, and we're running out of ports. We have a few spare 3560G 48 port switches, so we were thinking of just replaces the 3750's with those, and creating 2GB fiber trunks. My biggest concern with that is these are very active switches (They handle a lot of live data), so I'm not even sure 2GB uplinks will be enough, especially considering the etherchannel load-balancing doesn't evenly split the load between the ports.

glen.grant Fri, 05/16/2008 - 13:44

Use the "show controllers utilization" command , it tells you exactly how busy it is in % at the bottom of the display . It also shows what percentage utilization each and every port in the stack is running also. It does not break it out to what each member is transmitting just the the whole stack though you can probably get a pretty good idea whats going on by just looking at the ports .

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