Stack Redundancy; Shortest Path Forwarding - Planet SGSW-24040 User Manual

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.

4.17.1.3 Stack Redundancy

In the unlikely event that a SGSW Switch fails in a stack, stack integrity is maintained if the redundant cable is connected to the
stack. The affected switch within the sack can be replaced or removed without disrupting normal operation. The broken link is
bypassed and data transmission continues uninterrupted. The single management IP address for the stack is also preserved for
uninterrupted management and monitoring.

4.17.1.4 Shortest Path Forwarding

The SGSW Swtich supports shortest path forwarding technology to optimal data flow across the stack. The advantage of
shortest path forwarding as below:
Figure 4-17-4 Remove or Replace a switch from the stack
User's Manual of SGSW-24040 / 24240 Series
324