Chapter
3: Web Management
Configuration - Stack
NGSME24G4S User Manual | 196
2.
When swapping two Switch IDs, the devices will retain their (own) configuration,
except for the Switch ID.
3.
Switches without an assigned Switch ID can only be assigned to any unused ID.
4.
When assigning a Switch ID of an inactive switch to a new switch, the new switch will
inherit the former's configuration (see "Replacing a Switch" above).
5.
Deleting a switch will remove any configuration pertaining to it.
6.
Deleting an active switch will leave it with an unassigned Switch ID until rebooted or
manually assigning a Switch ID.
Master Election
Within a managed stack, one master switch (or just "master") must be elected. Any switch not
being master is a slave switch (or just "slave").
To elect a master, the following criteria are evaluated sequentially:
1.
If any switch already claims to have been master for more than 30 seconds, then that
switch will become master.
2.
If multiple switches claim to have been master for more than 30 seconds, then the
switch which has been master for the longest period of time will become master.
3.
The switch with the smallest master priority.
4.
The switch with the smallest MAC address.
The above algorithm ensures that once a master has been elected and has been master for
more than 30 seconds, it will remain master. However in some cases the user may want to
enforce a new master election. This is done by clicking "Start Master Election", followed by
"Save". This causes the first two criteria to be ignored, thereby basing master election only on
master priority and MAC address. When master election is enforced, the first two criteria are
ignored for a period of 10-15 seconds. On the Stack State Monitor web page, this is shown by
"Reelect" being set to "Yes" for one of the switches in the stack.
Buttons
Save:
Click to save changes.
Reset:
Click to undo any changes made locally and revert to previously saved values.
