F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

Thiyagu_163984's avatar
Thiyagu_163984
Icon for Nimbostratus rankNimbostratus
May 28, 2015

Some strange behavior on the F5 when one pool member is down

Hello All, I'm facing a some strange behavior on the F5. When one web server (of the 2) was offline, refreshing the website in a browser got the website 404 error   This indicates that the LB is n...
Thiyagu_163984's avatar
Thiyagu_163984
Icon for Nimbostratus rankNimbostratus
May 28, 2015

Thanks guys for your reply. Here is the health monitor configuration: ltm monitor tcp /Common/TCP { defaults-from /Common/tcp destination : interval 15 ip-dscp 0 time-until-up 30 timeout 46 }

11.5.1 Build 5.0.147 - LTM version

Please correct me if anything is wrong with the configuration.

Thanks,
Thiyagu
Josiah_39459's avatar
Josiah_39459
Historic F5 Account
May 28, 2015
Yes, there is nothing wrong with pool at the TCP level. 404 is a layer 7 HTTP protocol specific error. According to the TCP layer, everything is just fine here. Use an HTTP monitor with properly configured SEND and RECV (200 OK) strings.