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(Rapid) Spanning Tree
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Specifying the root switch
The root switch is assigned via the assignment of an appropriate priority for the Spanning
Tree segment. Set the highest priority (lowest value) in the “Priority” field on the “STP Bridge
Configuration” page in WBM for the switch selected as the root switch. Make sure that all
the other network switches have a lower priority (higher value). Here, the set path costs are
not evaluated.
Figure 5-16 Specifying the root switch priority
Specifying the root port or designated port
The root port and designated port are always the ports with the lowest path costs. If the
costs are the same, the priority is the decisive criterion. If the priorities are also the same,
the port number is the decisive criterion. Specify an appropriate combination of costs and
priority on the “STP Port Configuration” page in WBM for the port specified as the root port
or designated port. Make sure that all the other network switches either have higher costs
or a lower priority (higher value).
5.2.5.8 Disabling the Spanning Tree Protocol/using the fast forwarding function
One of the following requirements must be met so that the Spanning Tree Protocol can be
disabled for a port:
–
A termination device is connected to the port.
– Additional infrastructure components are connected to the port. The corresponding
network segment does not contain any loops.
Additional infrastructure components are connected to the port, forming a Spanning Tree
of their own. No additional redundant connections to this network segment are permitted.