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jlivolsi_173182's avatar
jlivolsi_173182
Icon for Nimbostratus rankNimbostratus
Oct 08, 2014

Configuring high availability on two 8900 LTM's

I am working with two 8900 LTM's that are configured as an active/standby setup. They are sharing a floating IP but I wanted to find out about setting them up so that if one system goes down (either for maintanence or a real issue) that not only will they failover but also share client's session information so that they do not loose their connections because of the failover. I saw information that it is possible to configure a shared mac and to either share or mirror session information but I cannot find any information about how to actually configure them for that.

 

application delivery
availability
BIG-IQ
deployment
LTM
performance

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  • Prince's avatar
    Prince
    Icon for Altostratus rankAltostratus
    Oct 08, 2014

    Hi Jivolsi,

     

    You need to configure MAC masquerade and connection mirroring. Below are the KBs.

     

    http://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-device-service-clustering-11-4-0/9.html

     

    http://support.f5.com/kb/en-us/solutions/public/7000/200/sol7214.html

     

    I hope that helps.

     

  • shaggy's avatar
    shaggy
    Icon for Nimbostratus rankNimbostratus
    Oct 08, 2014

    A few notes regarding connection mirroring -

     

    • It doesn't work with virtual servers using client-ssl and/or server-ssl profiles - SOL7216: The BIG-IP system does not support connection mirroring for SSL terminated traffic
    • Depending on system load/number of connections to a VS, connection-mirroring can be CPU intensive. I generally only use it on applications with long-lived connections. Protocols such as HTTP are very resilient and generally involve many requests, and are therefore not always good candidates for connection-mirroring