Port Group Spanning Tree Settings - D-Link DES-3326 User Manual

24-port NWay Ethernet Switch User's Guide
Max. Age = 2 x (Forward Delay - 1 second)
Max. Age = 2 x (Hello Time + 1 second)

Port Group Spanning Tree Settings

In addition to setting Spanning Tree parameters for use on the
switch level, the DES-3326 allows for the configuration of groups
of ports, each port-group of which will have its own spanning tree,
and will require some of its own configuration settings. An STP
Group will use the switch-level parameters entered above, with
the addition of Port Priority and Port Cost.
Note: An STP Group spanning tree works in the same
way as the switch-level spanning tree, but the root bridge
concept is replaced with a root port concept. A root port
is a port of the group that is elected on the basis of port
priority and port cost, to be the connection to the network
for the group. Redundant links will be blocked, just as
redundant links are blocked on the switch level.
Note: The STP on the switch level blocks redundant links
between switches (and similar network devices). The port
level STP will block redundant links within an STP
Group.
Note:
correspond to a VLAN group of ports.
To define which ports will be members of an STP Group:
Highlight Group Create/Delete and press enter.
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It is advisable to define an STP Group to
Configuring the Switch Using the Console Interface