Stack switches upgrade

[Adnan Khan]

Hi,

Can we upgrade the Stack of 2 members in a way so we can reload master switches first so the standby becomes master and data traffic still passing? Once the Previous master reloaded there will be a version mismatch and not join the stack. Then we can reload the current master (previous standby). Will data traffic still passing when both switches were running with different IOS and with the same config file? layer 2 traffic will pass through the switch?

(Bundle mode upgrade)

[Mark Elsen]

 - The question is invalid since in whatever upgrade-flow, each stack-member still has it's individual client-connections, and these will always have no network-service when that particular stack member reboots.

 M.

[Adnan Khan]

HI,

Consider this switch as aggregation switch and has redundant uplinks to access switches, in this case, data traffic will pass while upgrading the stack switches.

[Mark Elsen]

 - Again, not for the clients connected to the rebooting stack-member.

  M.

[Adnan Khan]

I have attached the drawing. I want to achieve while upgrading the stack switch, ping (connectivity) should not break with the server. Can i reload stack member one by one after change the boot variable or we don't have any other option but reload the whole stack?

[Mark Elsen]

- I find the drawing confusing. How can Stack Switch 1 be located at 3 different instances ?

  M.

[Adnan Khan]

Diagram corrected.