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Michael_61068's avatar
Michael_61068
Icon for Altocumulus rankAltocumulus
May 30, 2013

Virtual Server down, but still repsonds to ping

Hello,     We are using BipIPLTM to load balance Internet proxies. We have two geopraphically separate BigIP LTMs providing two Virtual Servers that we use as primary and backup proxies for ...
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nitass's avatar
nitass
Icon for Employee rankEmployee
Jun 01, 2013
I would like to understand why the BigIP LTM is still responding to ICMP Ping and TCP when the Virtual Server is down?about 3 way handshake, it depends on what virtual server type you are using. i understand you are using standard virtual server type.

 

 

sol8082: Overview of TCP connection set-up for BIG-IP LTM virtual server types

 

http://support.f5.com/kb/en-us/solutions/public/8000/000/sol8082.html

 

 

there is "verified accept" setting in tcp profile. you may try to see if it is usable but it is not compatible with L7 feature (e.g. iRule).

 

 

sol7559: Overview of the TCP profile

 

http://support.f5.com/kb/en-us/solutions/public/7000/500/sol7559.html