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MM_F_147944's avatar
MM_F_147944
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Aug 31, 2016
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F5 Loadbalancer loadbalcing between two Proxy Servers

I have to provide solution to my Customers for there Two Proxy Servers which they are using for there user about 1000. they have two Internet Connections for which they are using two Proxy Servers,they have following queries.

 

If one of internet connection is down how they will know and would the users will be switch to the other Proxy server which internet connection is up. They want to use one proxy server more then the other one how the loadbalancer do this.

 

application delivery
BIG-IP
LTM
  • IainThomson85_1's avatar
    IainThomson85_1
    Aug 31, 2016

    So, thankfully - What you're wanting to do it completely simple. Here's how i would do it: New DNS Name created - newproxy.yourcompany.com (Hey - Why not use F5's GTM to do this) Create a VIP on an F5 LTM, Include two proxy servers in the pool.

     

    In regards to using one proxy more than other ? How much, a fixed ratio or more dynamic based on performance/connections ?

     

    You'll need to create a monitor that monitors the proxy effeticley, depending on what proxy you're using - You could do a combined check by browsing to a few well known websites and looking for an appropriate repsonse... (200OK - Or such like)

     

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  • IainThomson85_1's avatar
    IainThomson85_1
    Icon for Cumulonimbus rankCumulonimbus
    Aug 31, 2016

    So, thankfully - What you're wanting to do it completely simple. Here's how i would do it: New DNS Name created - newproxy.yourcompany.com (Hey - Why not use F5's GTM to do this) Create a VIP on an F5 LTM, Include two proxy servers in the pool.

     

    In regards to using one proxy more than other ? How much, a fixed ratio or more dynamic based on performance/connections ?

     

    You'll need to create a monitor that monitors the proxy effeticley, depending on what proxy you're using - You could do a combined check by browsing to a few well known websites and looking for an appropriate repsonse... (200OK - Or such like)

     

    • MM_F_147944's avatar
      MM_F_147944
      Icon for Nimbostratus rankNimbostratus
      Aug 31, 2016

      First of all thanks for Reply

       

      following are some other queries

       

      Both proxies are in same subnet. should we configure F5 in Layer 2 or Layer 3. if we want to check google reachability as a health monitor what health monitor we have to use and what will be its configuration if not present specifically for google.

       

    • IainThomson85_1's avatar
      IainThomson85_1
      Icon for Cumulonimbus rankCumulonimbus
      Aug 31, 2016

      The F5 will be configured in both Layer 2 and 3....

       

      Word of warning: Don't just rely on the availability of one website for checks. Google (Or others) could see frequent checking as a mild DDoS type attack, and block the egress IP.

       

      I would implement multiple checks.

       

    • MM_F_147944's avatar
      MM_F_147944
      Icon for Nimbostratus rankNimbostratus
      Sep 01, 2016

      Thanks for reply

       

      we will not send ping but we will get the string and what value google will return.