ACE active unit replacement

[raza555]

Hi,

I need to replace the ACE (currently ACTIVE unit) with new ACE unit, as it has hardware bug. Please advise that how I can cause the failover, by making it standby unit and then replace it with new unit. Below are its config.

If I do 'ft switchover all', do it will become STANDBY, my worry is that it has high priorities of '110' as compare to peer priority '90' and its current status is ACTIVE and peer status is Standby HOT.

1) I am not sure as per below config that  preempt is enabled or not, as I cannot see the keyword ' preempt', please advise?

2) As it has high priorities of 110, I think if I will configure the new replacement unit with below same configuration then it will become ACTIVE & sync its blank config to the Previously ACTIVE unit. How can I make new replacement unit as STANDBY unit, so that it can take sync config from the Previously ACTIVE unit.

3) How much downtime will be, it will be 10 seconds or 1 minute etc.?

ft group 1
  peer 1
  priority 110
  peer priority 90
  associate-context Admin
  inservice

ft group 2
  peer 1
  priority 110
  peer priority 90
  associate-context EXT
  inservice
ft group 3
  peer 1
  priority 110
  peer priority 90
  associate-context INT
  inservice

Thanks

[Kanwaljeet Singh]

Hi Rizwan,

Preempt is enabled by default and that is why you don't see it. You need to no preempt to see it in the configuration. Ft switchover all will make the standby active and no preempt will ensure that once  the ACTIVE comes back up, it doesn't take the control even though it has high priority. And since it would be the new standby after initial configuration and ft configuration, the current ACTIVE should sync all the configuration to it. Once the devices are in ACTIVE-STANDBY_HOT state, you can do the switchover again.

Attaching one document for your reference to keep other things in mind while performing ACE replacement.

Please let me know if you have any questions.

Regards,

Kanwal

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