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SL's avatar
SL
Icon for Cirrus rankCirrus
Sep 27, 2016

Replace HTTP Server with F5

Hi All

 

Has anyone been able to configure the F5 to replace a IBM HTTP Server.

 

We have been able to do the F5 configurations, the issue we are having is the response times for the initial page to load has increased from 20ms to 5seconds.

 

It seems to be the javascripts taken this time to load the page. When it goes via the HTTP Server it loads the same page in milliseconds.

 

Any suggestions or ideas.

 

Thanx

 

application delivery
LTM

2 Replies

  • Kevin_Stewart's avatar
    Kevin_Stewart
    Icon for Employee rankEmployee
    Sep 27, 2016

    This may require some more background information. What are you doing now? You can simulate a web server with F5 iRules, but why do you want to do that?

     

    Have you done any debugging to see where the delay might be? Just guessing here, but it sounds like an HTTP "fetch" issue.

     

  • Kevin_Stewart's avatar
    Kevin_Stewart
    Icon for Employee rankEmployee
    Sep 28, 2016

    It's going to depend on any special logic that the IBM HTTP server is performing, assuming it's not JUST load balancing. I think a good place to start is with a packet capture. Load up a browser-based tool like Fiddler or HTTPWatch and compare (from the client's perspective) what the HTTP communication looks like with and without the HTTP server. It's very likely that either a) the HTTP server is applying some logic that you'd have to replicate on the F5, or b) there's simply some URL that isn't getting translated or communicated correctly. You should see that in the Fiddler capture.

     

    Bottom line, there's no deployment guide (that I'm aware of), and a solution will depend on doing a little work on your end. But it should be totally possible.