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Configuring Interface Settings
You can configure RSTP and MSTP attributes for specific interfaces,
including port priority, path cost, link type, and edge port. You may use a
different priority or path cost for ports of the same media type to indicate
the preferred path, link type to indicate a point-to-point connection or
shared-media connection, and edge port to indicate if the attached device
can support fast forwarding. (References to “ports” in this section means
“interfaces,” which includes both ports and trunks.)
Command Attributes
The following attributes are read-only and cannot be changed:
•STA State – Displays current state of this port within the Spanning Tree.
(See Displaying Interface Settings on page 12-13 for additional
information.)
-Discarding - Port receives STA configuration messages, but does not
forward packets.
-Learning - Port has transmitted configuration messages for an
interval set by the Forward Delay parameter without receiving
contradictory information. Port address table is cleared, and the port
begins learning addresses.
-Forwarding - Port forwards packets, continues learning addresses.
•Trunk15 – Indicates if a port is a member of a trunk.
The following interface attributes can be conf igured:
•Spanning Tree – Enables/disables STA on this interface.
(Default: Enabled)
•Priority – Defines the priority used for this port in the Spanning Tree
Protocol. If the path cost for all ports on a switch are the same, the port
with the highest priority (i.e., lowest value) will be configured as an active
link in the Spanning Tree. This makes a port with higher priority less
likely to be blocked if the Spanning Tree Protocol is detecting network
15. STA Port Configuration only