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jdscrymgeour_42's avatar
jdscrymgeour_42
Icon for Nimbostratus rankNimbostratus
Apr 13, 2012

LTM redundancy failover

We have two units configured as active/standby however the only way we can see to force the units to failover if a VLAN/route goes offline is using the VLAN failsafe function, this presents an issue because the customer loses there video for a minimum of 10 seconds before the units failover and the standby becomes active.

 

 

Is there is a better way to have a more immediate failover of the active/standby devices?

 

 

For instance the Juniper boxes we have are also fully configured Active/Standby and if they failover it happens within a couple of seconds.

 

 

Thanks

 

 

James
dev
TMSH

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  • Salim_83682's avatar
    Salim_83682
    Historic F5 Account
    Apr 13, 2012
    You could try and use HA Group based on Pool and/or trunk loss.

     

    It triggers a faster failover.
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Apr 13, 2012
    As Tolas said, you can use HA groups for more intelligent and faster failover compared with VLAN failsafe:

     

     

    Understanding Fast Failover

     

    https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-redundant-systems-config-11-1-0/8.html

     

     

    Fail-Safe and Fast Failover

     

    https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-concepts-11-1-0/tmos_high_avail.html

     

     

    Aaron
  • Thrillseeker_12's avatar
    Thrillseeker_12
    Icon for Cirrus rankCirrus
    Apr 23, 2013
    Hi,

     

     

    I know that VLAN Faisafe Failover takes at least 10 sec.

     

    How fast is Fast-Failover measured in sec.?

     

    I tested with a Trunk Object and it seems that Fast-Failover is still around 1 or 2 sec.

     

    What if I need to fail over below 1 sec. if one or more trunk interfaces are going down?

     

     

    Thanks for your feedback

     

    Regards

     

    Lukas