Tp-Link T1700G-28TQ V2 [102/772] Unit id

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Configuration Guide 77

Configuring Stack Overview

1.3 Stack Master Election and Re-election

The stack master is elected or re-elected based on the following rules and in the order

listed:

1) The switch that is formerly the stack master.

2) The switch with the highest priority value.

3) The switch with the longest running time.

4) The switch with the lowest MAC address.

The priority value ranges from 1 to 15. The higher the value is, the more likely the switch will

be elected as the master. By default, the switch’s priority is 5. We recommend you manually

assign the highest priority value to the switch that you prefer to be the stack master before

stack establishment.

After the new stack is established, all the switches in the stack will use the global

configuration of the re-elected stack master.

A stack master remains its role unless one of these events occurs:



The stack is reset.



The stack master is removed of the stack.



The stack master is reset or powered off.



The stack master fails.



Another stack joins the stack.

1.4 Unit ID

The unit ID identifies each switch in the stack. The default unit ID of a new, out-of-box

switch is 1. When it joins a stack, its default unit ID changes to the lowest available unit ID

in the stack. The unit ID can be also manually assigned.

Members cannot have the same unit ID in the same stack. If there is a unit ID conflict in the

stack, the unit ID is configured based on the following rules and in the order listed:

1) The device which was managed by the current master will resume its unit ID.

2) The device with manually assigned unit ID is prior to the device whose unit ID

assignment mode is “Auto”.

3) The device with the highest priority value.

4) The device with the lowest MAC address.