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James_Smith_299's avatar
James_Smith_299
Icon for Nimbostratus rankNimbostratus
Nov 22, 2016

Why is this BIGIP LTM not forwarding https request to a backend web server at port 80?

A Win7 client at IP 10.15.18.209 is using Internet Explorer. Unable to load page to https page pointing to the BIGIP LTM.

 

Does this mean F5 is unable to handoff request to any server in the web pool?

 

[root@bigip1:Active] config tmsh show sys connection

 

10.15.18.209:49656 172.16.200.16:443 ::.0 tcp 0

 

Https page intermittently loads, and when it does this is what BIGIP looks like.

 

10.15.18.209:49656 172.16.200.16:443 192.168.2.15:80

 

Only 1 remote office is affected by this issue. Other sites are OK. If I'm understanding this correctly, BIGIP is the issue because it is not handing off to a backend server ::.0

 

Needing some guidance. Where should I look next?

 

application delivery
BIG-IP
LTM

4 Replies

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  • keshav_163381's avatar
    keshav_163381
    Icon for Nimbostratus rankNimbostratus
    Nov 22, 2016

    Hi James,

     

    You can check whether the pool members are not flapping. Check the logs in logs directory (/var/log/ltm) and Please also check whether any snat translation is configured for this virtual or interface level. If you could not find anything please take a TCPDUMP on servers side and check what are you seeing in the request and response

     

  • DavisLi's avatar
    DavisLi
    Icon for Employee rankEmployee
    Nov 22, 2016

    You mentioned HTTPS site. Have you configured an SSL Client Profile in your virtual server?

     

  • Lee_Sutcliffe's avatar
    Lee_Sutcliffe
    Icon for Nacreous rankNacreous
    Nov 22, 2016

    Is the source client on the same subnet as the pool members? If not, you may need to configure SNAT