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Spanning
Page 5-23
Spanning
This menu allows you to view and configure the Spanning Tree Protocol.
▲ Important: Do not change any of the Spanning Tree
Protocol parameters unless you are familiar with the
IEEE 802.1d specification.
Table 5-17 describes each field in the Spanning menu.
∆ Note: For instructions on using this menu, see “Con-
figuring Spanning Tree Parameters” on page 4-28.
For clarity, the IntraStack device is referred to as a
“bridge” in this table.
Table 5-17 Spanning Menu
Field Description
Protocol Specifica-
tion
Read-only field; displays the IEEE protocol specifica-
tion.
Priority Configurable field; integer (from 0 - 65535) used to
determine the priority of the selected bridge during
Spanning Tree configuration.
The lower the value, the higher the bridge priority and
the more likely it will be selected as a forwarding
bridge (and possible, the root bridge) in a Spanning
Tree.
Designated Root Read-only field; displays the unique bridge ID of the
current root bridge in the Spanning Tree. The ID is
based on its physical address and priority.
Designated Root is sometimes referred to as Root
Bridge ID.
Root Cost Read-only field; displays the calculated distance from
the selected bridge to the root bridge, as seen from
the selected bridge.
Root Port Read-only field; displays the port on the selected
bridge with the lowest cost route to the current root
bridge.
The port is determined during Spanning Tree configu-
ration. If the selected bridge is the root bridge, the
value is 0.
Book Page 23 Thursday, September 18, 1997 4:28 PM