Catalyst 1300 stacking master lost

[daniel_h]

I have connected three Catalyst C1300-24T-4X to a stack. All switches run firmware 4.1.7.17 and they are working fine but as soon as I disconnect the switch with stack ID 1 from power the other two switches stop working and freeze.

Any idea or solution for a workaround?

[Mark Elsen]

  - @daniel_h     I would advise that you configure a syslog server on the stack first, when it is working normal.
                         When the issue happens, then check the last logs which arrived at the syslog server,

  M.

[daniel_h]

After switching off the "active" switch, the attached entries are logged (I have emptied the log before)

[balaji.bandi]

Also look one of the stacking guide lines for ipv4 :

https://www.cisco.com/c/en/us/td/docs/switches/campus-lan-switches-access/Catalyst-1200-and-1300-Switches/Admin-Guide/catalyst-1300-admin-guide/ipv4-configuration.html?bookSearch=true

[pieterh]

Ring and chain stacking options, auto stacking port speed, flexible stacking port options

-> do you have a ring or chain configuration ?
if chain, -> what position in the chain is ID-1  
when ID-1 is positioned in the middle of the chain ( 2-1-3), and is powered down then 2 and 3 cannot communicate with each other

[daniel_h]

I have changed the configuration for "Unit ID" from fixed to auto. Now it looks like a backup switch becomes active as soon as the active one fails.

I use ring configuration