cisco nexus 5k - rx pause incrementing

c-h-r-i-s-t-o-p-h used Ask the Experts™
I have a nexus 5k with a few servers that are experiencing slow performance. On those servers' 10 gig ethernet ports, the RX PAUSE value is incrementing.

Please explain what this behavior may indicate. Thanks!
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Top Expert 2014
The PAUSE frame will tell the receiving end to stop transmitting.  Check the flow-control settings on the NIC on your servers.
Don JohnstonInstructor
Top Expert 2015


I'm not sure how else to state this question, so I'll go with this...

Based on what you have said, it is obvious that the connection is pausing / stopping transmission.

Can you provide some insight as to how the connection behaves as a result of this? i.e. window size reset, tcp-reset, etc?? Other than the obvious pause, why does this slow down connections to such an extreme?

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