HPE 7900 CORE SWITCH upgrade

[parnassus]

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@hemh wrote: On our two members 7910's stack with BFD-MAD enabled, chassis 2 was the master. We fist upgraded chassis 2, after this, the IRF get broken, chassis 1 became master in the old firmware version.

Out of curiosity: Shouldn't the ISSU (incompatible or not) be started exactly by upgrading the IRF Standby member first? ...Chassis 1 in the above scenario.

[Ivan_B]

@parnassus  Exactly! I think that is the point were things started to go in the wrong direction....

[hemh]

Hi Yvan,

As soon as we lauched the chassis 1 reboot, point 4 in your message, chassis 2 shut down all its ports, excepted the ones excluded of course, and we had to run the command mad restore to re-establish connectivity int the datacenter.

[hemh]

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Hi Parnassus,

So can I assume that the best way to do this kind of upgrade, is to have chassis 1 as master before the operation, to make the operation easier?