Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring RSTP (Rev. 03)
Rapid Spanning Tree Protocol (RSTP)
© 2008 Foundry Networks, Inc.
Page 24 of 34
Parameter
Description
DesignatedBridge
The unique Bridge Identifier of one of the following:
•
The Bridge to which the port belongs, in the case of a
Designated port.
•
The Bridge believed to be the Designated Bridge for the LAN to
which this port is attached.
This parameter is used:
•
Together with the Designated port and Port Identifier parameters
for the port to ascertain whether this port should be the
Designated port for the LAN to which it is attached.
•
To test the value of the Bridge Identifier parameter conveyed in
received Configuration BPDUs.
DesignatedPort
The Port Identifier of the Bridge port, on the Designated Bridge, through
which the Designated Bridge transmits the Configuration Message
information stored by this port.
This parameter is used:
•
Together with the Designated Bridge and Port Identifier
parameters for the port to ascertain whether this port should be
the Designated port for the LAN to which it is attached.
•
By management to determine the topology of the Bridged LAN.
FrwrdTransitions
How many times the port transited to Forwarding state.
Admin EdgePort
This value indicates whether the user forced the port to be an Edge Port
(a port connected to a PC or any non spanning-tree capable device on the
edge of the network), or it is set by the RSTP.
EdgePort
The actual value of the EdgePort parameter for this port,; either forced
by the user or set automatically by the RSTP.
AdminLink-Type
This value reflects the user-defined link type of this port. If it is set to
“auto” than the link type is set according to the duplex mode of the port.
Link-Type
The actual value of the link type for this port; either forced by the user or
set automatically by the RSTP.
MigrationTimer
The time interval beginning with the last protocol migration, in which
other migrations do not occur.
Table 10: Parameters Displayed by RSTP Show Commands for All Interfaces
Parameter
Description
Port
The interface unit/slot/port.
Pri
The port priority, which is part of the port identifier.
Prt Role
The current role of the port (i.e. Root, Designated, Alternate, Backup
or Disabled).
State
The current state of the port (i.e. Disabled, Listening, Learning,
Forwarding, or Discarding).
PCost
The contribution of the path through this port, when the port is the