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robert_blair_75's avatar
robert_blair_75
Icon for Nimbostratus rankNimbostratus
Apr 27, 2009

Big-IP LC 4.5.14 / 9.4.6 Failover Partner

I am running a Big-IP Link Controller 4.5.14 that needs to be replacing with a F5 Big-IP Link Controller 9.4.6.

 

 

Has anybody ever setup a F5 LC 9.4.6 as a failover partner with a F5 LC 4.5.14?

 

 

I understand that I cannot copy the configuration between the LCs.

 

 

I want to failover the F5 LC 4.5.14 to implement the new F5 LC 9.4.6; if problems arise I can fail back.

 

 

Any thoughts?

 

 

Thanks …

 

config
design

2 Replies

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Apr 27, 2009
    As Denny recently pointed out in a similar post (Click here), this probably isn't possible because the state sync'ing has changed between the versions.

     

     

    I wonder if you used hardwire failover and didn't try to sync the config, whether the second unit would stay in standby. As (I think) the failover is based on a voltage on the wire, it might work.

     

     

    Aaron
  • dennypayne's avatar
    dennypayne
    Icon for Employee rankEmployee
    Apr 27, 2009
    The voltage might get the other unit to stay standby, I haven't tried that. When you are swapping out boxes though, all it takes to fail back is to disconnect the cables from the new box, reconnect them to the old box, and clear arp on the switch/router, so being without a secondary unit for a few minutes during a maintenance window doesn't seem like a big issue to me.