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New Member





I am planning to run VSS on cisco WS-C4506-E switches, could you pls suggest me stable software version for this. I have below image currently.



VIP Super Bronze

It all depends on what

It all depends on what features you are running.  You would need to read the release notes for the version you want to use before depoying it.  Anyway I use "cat4500e-universalk9.SPA.03.04.01.SG.151-2.SG1.bin" and it seems to be pretty good.


New Member

  Hi Reza,Actually i have


 Hi Reza,

Actually i have deployed these switches and configured VSS with above mentioned image but we are facing issue is that when we ping gateway ip configured on switch by connecting laptop on same switch, i find avg. latency 4-5ms which is pretty high.

So is this beause of unstable images.

VIP Super Bronze

No, that has nothing to do

No, that has nothing to do with IOS stability.  Is the laptop connected to the primary switch or stand-by?


New Member

 Hi Reza.. Problem we are not

 Hi Reza..

 Problem we are not facing with laptop but even we face it from access switch which is connected to core Active and standby through etherchannel.


Could you pls advise why this is occurring and how to resolve this.

New Member

Hi.. Pls suggest on this,

Hi.. Pls suggest on this, also i am facing another issue which is that when any machine, connected to access switch which is connected to core VSS through etherchannel, is disconncted and another machine of same ip and is conncted to switch on same port then this machine doesnt get reachable. Also when i do clear arp the arp entry doest update with new machine.

I dont know why this is happening. Could you pls suggest any resolution.


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