C1300 Stack Configuration Behavior and Specifications

[Translator]

C1300-48T-4X(unit-id1) and C1300-24T-4X(unit-id2) form a stack configuration.
(version : 4.1.6.54)

If C1300-48T-4X(unit-id1) is active and C1300-24T-4X(unit-id2) is standby,
Reload only C1300-48T-4X(unit-id1).

As a result, C1300-24T-4X (unit-id2) may be promoted to active.
In some cases, C1300-48T-4X(unit-id1) remains active and the stack is configured.

What do the switches that make up the stack decide on active/standby?

<Additional Information>
Each switch has set the unit-id with the following command:
(config)#stack configuration unit-id <unit-id> links te <1-4>

[Enes Simnica]

In a stack, active/standby roles are decided based on priority (if set), then hardware/software state, and finally the lowest MAC address as a tiebreaker. That’s why sometimes unit-2 becomes active when unit-1 reloads. To make sure a specific switch (like unit-1) always takes the active role, u can configure its priority higher than the others:

• Switch1(config)# stack unit 1 priority 15
• Switch2(config)# stack unit 2 priority 10

-Enes
CCNP x2 Enterprise
Your Friendly Networking Ninja

[Translator]

Thank you for your comment.
Also, we apologize for the late response.

c1300 does not support the commands you have presented.
Just in case, we confirmed that the actual machine cannot be executed.

Therefore, the priority setting cannot be explicitly specified.