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WS-C3850-12X48U Stack

saboodi
Beginner
Beginner

Hello all,

I got stack of 3 WS-C3850-12X48U, and I set priority for them but when the master failed I loose whole stack. I mean the standby doesn't come be master!!! and the configuration not sync between these switches I don't why. So please advice me for that and I'm using the version of code universalk9.16.03.07.

Thanks

8 Replies 8

marce1000
VIP Mentor VIP Mentor
VIP Mentor

 

 - For starters , configure syslogging to a syslog server, check which errors are reported when the stack master fails.

 M.



-- ' A nun once asked a penguin ' do you think the earth is flat ? ; the penguin replied :
Madam, it all depends , in Riemann geometries the earth can be perfectly flat! The nun thanked him , he tripped and fell forward : the poor animal had forgotten that he might be living in a Riemann geometry too!

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend
Can yo u post the complete output to the command "sh switch detail".

Thanks for your answer, Actually I'm looking why the standby has not come master when the master faile?

my suggestion maybe the configuration isn't synced between the SW.

1.JPG

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend

@saboodi wrote:

my suggestion maybe the configuration isn't synced between the SW.


What made you conclude the config wasn't synchronized with the secondary? 

Is it because when the primary failed the remainder of the stack was unreachable?  If this is the case, the first question everyone is going to ask is:  Where is uplink port?  Is the uplink port connected to the stack master?  Is there an uplink port connected to the secondary port? 

I have two uplinks one in the master and anthor one in standby. Suppose be when Master failed the stack still up! But this is not happened to me. When the stack failed I console the standby and there is no Configuration on it.

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend
Raise a TAC Case.

What you thing this command, it will help or not ???

#redundancy config-sync validate

Thanks

Dennis Mink
Advisor
Advisor

what do you mean by "master failed" you had a fully functioning stacjk and the the master died, leabing only the other switches in the stack operational?  do a sh switch

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