I have a C9400 with double SUP version 16.11 (in install mode).
one of these SUP card has crash and i have received another but with version 16.6.
how i can upgrade this new card, 16.6 to 16.11, without stop the active SUP?
i don't have spare C9400 for upgrade the new card.
here is the steps :
You mean you have already upgraded Active supervisor, then same procedure upgrade secondary also right ?
you don't understand my problem.
the secondary has crash, and i receive a new SUP in 16.6.
But my primary SUP is 16.11
for upgrade the secondary SUP, i must unplugged the primary SUP and plug the secondary for upgrade => But i can't unppluged the primary because i can't doing down the network.