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Forum Discussion

adithyodw_18563's avatar
adithyodw_18563
Icon for Nimbostratus rankNimbostratus
Aug 31, 2015

F5 Pool Members flapping issue

Dear All,   We are facing issue with monitoring of nodes in one of our virtual server pool, however when we check on the server side we didn’t found any discrepancy on server port side. Due to thi...
application delivery
availability
LTM
GaganD's avatar
GaganD
Icon for Nimbostratus rankNimbostratus
Sep 04, 2015

Hi Buddy,

 

After checking you tcpdump, I can see that your problematic server us sending TCP zerowindow to F5. upon which after waiting for some time, F5 tears down the session by sending resets, causing health check to fail. There is something which is making your server really busy, to an extent that it is sending message that it cannot receive any more data. What is cpu, memory, interface stats on the server.