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Upgrading 2920 stack with P IMC

 
rawr
Occasional Contributor

Upgrading 2920 stack with P IMC

Hi,

I'm currently in the process of upgrading our 2920's from WB.15.12.0015 to WB.15.17.0007 and I'm having quite some issues with the 3+ switches stacks.

 

I'm using IMC 7.0 to deploy the firmware and it has worked just find for standalone switches as well as a 2 switch stacks.

I'm not upgrading my second 3 switches stack and while I thought the first time was some sort of glitch, I encountered the same behavior now.

From my understanding, the master should upgrade and then the rest of the stack should upgrade one switch by one.

The behavior I see is;

Deploy software via IMC - Member 3 upgrades - Member 3 is kicked out of the stack - Upgrade stops

Now I can push the software again so that; 

Member 2 upgrades - Member 2 is kicked out of the stack - Upgrade stops

Now I can push the software again so that; 

Member 1 upgrades - it reboots - after a few minutes the stacks is operationnal again.

 

Is that normal? I got a burned a bit on the second stack I upgraded since my uplinks are on member 2 and 3 - I expected the Master to be upgrade last since it was the case on the first stack I upgraded but in my case (master was member 2), it really seems to upgrade from last member to first.

I'd like to be able to upgrade my stacks with a bit more confidence and without having to push the software 3 times.

 

Thanks to anyone who could shed some light on the process !

1 REPLY 1
Michael Patmon
Trusted Contributor

Re: Upgrading 2920 stack with P IMC

Hello.  I was able to successfully upgrade a 3 member 2920 stack from WB.15.12.0015 to WB.15.17 via IMC 7.1.  The process should be:

  • Software uploaded to commander
  • Commader sync to standby
  • Standy sync to other members

No member should be "kicked out" of the stack unless there was some kind of error.  Does the log say anything during the upgrade?  I also used a fairly basic config.  If you want to post your config I can try an upgrade with that.


I 01/01/90 00:35:52 00179 mgr: ST1-CMDR: SME TELNET from 128.44.120.35 - MANAGER Mode
(several logins from IMC)
I 01/01/90 00:40:44 00163 update: ST1-CMDR: Firmware image contains valid signature.
I 01/01/90 00:41:16 00179 mgr: ST1-CMDR: SME TELNET from 128.44.120.35 - MANAGER Mode
I 01/01/90 00:41:34 00537 stacking: ST1-CMDR: Syncing primary OS to standby started
I 01/01/90 00:41:35 00150 update: ST1-CMDR: Primary Image updated.
I 01/01/90 00:42:06 00179 mgr: ST1-CMDR: SME TELNET from 128.44.120.35 - MANAGER
I 01/01/90 00:42:11 00537 stacking: ST1-CMDR: Syncing primary OS to standby complete
I 01/01/90 00:42:13 00179 mgr: ST1-CMDR: SME TELNET from 128.44.120.35 - MANAGER Mode
W 01/01/90 00:42:35 03257 stacking: ST1-CMDR: Reboot of a0b3cc-aaea00 Successful
W 01/01/90 00:42:35 03257 stacking: ST1-CMDR: Reboot of 2c59e5-0bfbc0 Successful