topic FWSM Software Upgrade (With Failover) in Network Security

FWSM Software Upgrade (With Failover)

gchui — Fri, 21 Feb 2020 07:33:26 GMT

Dear all,

I have two Firewall Service Modules in two separate 6500 chassis, which run stateful failover. Does any know how to upgrade the two FWSM ios without service interruption?

Thanks

Re: FWSM Software Upgrade (With Failover)

jsivulka — Fri, 13 Aug 2004 21:30:59 GMT

I guess IOS upgrade will be always disruptive. However, the downtime can be minimized. You could load the new software on both blades. Now, during a maintainence window, reload the primary. The standby will take over. About one minute later or so, reload the standby. This should see both the blades upgraded with minimal disruption.

Re: FWSM Software Upgrade (With Failover)

sreddy — Thu, 17 Mar 2005 20:44:49 GMT

Hi,

I'm planning to upgrade FWSM blades in the same scenario...

My question is what happens when the Primary blade comes up with new image version number (version mismatch)? I assume this will create problem as 1.1.3 doesn't support different version numbers in failover scenario.

Should I remove the physical connections between two blades (failover VLAN) during the upgrade process?

Also is it possible to upgrade from 1.1.3 to 2.2.1 or 2.3.x directly?

Thanks.