Secondary ASA interface Flap when issue write Standby

[ahmad82pkn]

Hi,

i never see this before, but on newly purchased just configured firewall.

when i do wrtie standby.

All interfaces on standby unit flaps.

is it some IOS bug? my firewalls are

Hardware:   ASA5525, 8192 MB RAM, CPU Lynnfield 2394 MHz, 1 CPU (4 cores)

                   ASA: 4096 MB RAM, 1 CPU (1 core)

and image

asa861-2-smp-k8.bin

what could be the reason? FYI i am using lan base failover and not doing any statful failover.

[Eddy Duran]

Hello Ahmad,

Are you monitoring both units using syslogs?

Do you get any message or syslog when the issue happens?

- Eddy

[Sanjay Shaw · Accepted solution]

Hi Ahmad,

This is expected behavior and when we issue the command "write standby", we see the device configuration getting erased and then re-configured from the active device. Device goes in the Sync config and Bulk Sync state in transition. Here is more info regarding the same :

write standby

. This is a misleading message and a cosmetic issue is filed with this defect id :

CSCuc63634  This is expected behavior and when we issue the command "write standby", we see the device configuration getting erased and then re-configured from the active device. Device goes in the Sync config and Bulk Sync state in transition. Here is more info regarding the same : write standby. This is a misleading message and a cosmetic issue is filed with this defect id : CSCuc63634 

Due to the configuration being removed and re-applied we saw the link flap on the standby devices.

Please rate this if helpful.

[ahmad82pkn]

thank you for the information, though this behavior would be new for me, since i never saw this on my dozen pair which are in production, May be something with new generation ASA series.