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yan_haijin_3492's avatar
yan_haijin_3492
Icon for Nimbostratus rankNimbostratus
Jul 18, 2007

for switch vs member

we know the F5 can swtich traffic from failing member to good member quickly (almost 5 ms),now the guest want to add the delay into the process of the swiching process,so would we can change the switch process timing for any way?

8 Replies

  • Deb_Allen_18's avatar
    Deb_Allen_18
    Historic F5 Account
    If you mean the failover from active to standby LTM, networks failover takes several seconds longer than serial failover, but other than that, there is no way to affect the failover timing

     

     

    Most customers want faster, more seamless failover. Why do you want to introduce a delay?

     

     

    /deb
  • because the custmer want use ltm for load balance database, u know the dababase server unload timing is so long ,they want increasing time for the database swtiching. thk u for u replay.waiting for u helping.
  • Deb_Allen_18's avatar
    Deb_Allen_18
    Historic F5 Account
    For failing servers over more slowly, I think the only option that might work for you is the "Manual Resume" feature in 9.4: (Click here)

     

     

    HTH

     

    /deb
  • I read the document,I see u want me to using the Manual Resume function for manual switch to the good server, but I want auto switch the good server for several minutes, the lag time is the impotant inneed.waiting for u helping.
  • I do not think there is a way to accomplish this. BIG-IP is designed to move things over quickly. It was not designed to do things slowly. If there is a manual process involved in failing the databases over, then the BIG-IP failover could be manual as well.
  • manually maybe can swich to the good server,but somebody must monitor the f5 ltm,and swtich the monitor by himself, I want the f5 ltm swtich the server auto, just waiting for sereval minutes.
  • You will need to write a custom monitor in PERL, shell or compiled C to accomplish this.