10-29-2012 06:01 PM - edited 03-11-2019 05:15 PM
I have a pair of ASA 5520s running 8.2 configured for active/standby. However I want to change what is currently labelled as the primary to be the secondary and the vice versa other unit (not talking about flipping from active to standby etc). Is there a way this can be done without any downtime? I'm assuming the following commands are all i will be touching
failover lan unit primary
and
failover lan unit secondary
but unsure of steps to ensure i don;t lsoe connectivity.
Thanks!
10-29-2012 06:12 PM
Hello Danny,
Exactly that is what needs to be done!
I have not seen this requirement before but I would say you could do the following:
On the primary
failover exec mate failover lan unity primary
failover lan unit secondary
And that should take care of that, Please post it and let us know the result!
Julio
11-02-2012 08:16 AM
Thanks for the reply. So digging into this:
With the first command:
failover exec mate failover lan unit primary
This adds the config to the standby unit to be failover lan unit primary but it still has an empty starting config, correct? All it will contain is the failover config itself. Now if I add the lan unit secondary to my current active, that means upon failover the BLANK config from the other unit will overwrite this one. IE
Device A - full starting config - lan unit primary - ACTIVE
Device B - blank starting config with failover commands - lan unit secondary - STANDBY
after change
Device A - full starting config - lanm unit secondary - ACTIVE
Device B - blank starting config with failover commands - lan unit primary - STANDBY
I issue "no failover active" on Device A and everything breaks since Device B has no config and A won't synch over to B since A was designated as secondary. Is this logic correct?
11-02-2012 10:13 AM
Hello Danny,
As soon as you apply the no failover active ASA b should become the active and he will use it's current configuration, so it will not be a blank configuration, Logic is good execpt the final part,
Regards,
Julio
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