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dimka___104021's avatar
dimka___104021
Icon for Nimbostratus rankNimbostratus
Jan 31, 2006

LB_FAILED, but pool is UP

Hi,     I'm terminating SSL on F5 and sending http requests to backend   Weblogic pool. In this pool i have only 1 member.     This part of irule logs failed pool information:   ...
application delivery
dev
devops
iRules
dimka___104021's avatar
dimka___104021
Icon for Nimbostratus rankNimbostratus
Jan 31, 2006
Hi,

 

 

I'm using http health monitor for pool with Interval=5 and Timeout=16 seconds.

 

Same backend is used by our current iPlanet webserver and there're no issues/errors for clients.

 

Through F5 i'm passing couple percents of whole traffic (approx. 100-150 active connections).

 

 

tcpdump shows a lot of retransmission from F5 to backend:

 

 

13:20:44.741601 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:20:45.941601 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:20:47.141602 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:20:49.341602 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:20:53.541601 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:21:01.741601 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

13:21:17.941601 193.40.195.59.1867 > hnet.crebit.ee.8000: S 3215066501:3215066501(0) win 4380 (DF)

 

 

p.s. And there're no errors on F5 interfaces