Allied Telesis Rapier Switch - Manual (Page 58)

58 Rapier Switch Software Reference
Software Release 2.5.1
C613-02025-00 REV B
Table 18: Parameters in the output of the SHOW STP command .
Parameter Meaning
STP Name The name of the Spanning Tree Protocol entity.
Mode Whether STP is running in standard, or rapid mode.
RSTP Type Whether RSTP is operating normally, or as STP compatible.
In STP compatible mode, the rapid transitions to forwarding
do not occur.
VLAN members A list of the VLANs that are members of the STP. VLAN
Identifiers are shown in brackets.
Status The status of the STP; either ON or OFF.
Number of Ports The number of ports belonging to the STP.
Number Enabled The number of ports that have been enabled using the
ENABLE STP command and are being considered by the
Spanning Tree Algorithm.
Number Disabled The number of ports that have been disabled using the
DISABLE STP command and are not being considered by the
Spanning Tree Algorithm.
Bridge Identifier The unique Bridge Identifier of the switch. This parameter
consists of two parts, one of which is derived from the
unique Switch Address, and the other of which is the
priority of the switch.
Bridge Priority The settable priority component that permits the relative
priority of bridges to be managed. The range of values is
between 0 and 65535. A lower number indicates a higher
priority.
Designated Root The unique Bridge Identifier of the bridge assumed to be
the root, (Standard Mode only).
Root Bridge The unique Bridge Identifier of the bridge assumed to be
the Root, (Rapid Mode only).
Designated Bridge The unique Bridge Identifier of the bridge assumed to be
the designated bridge. Displayed when STP is set to RAPID
mode, (Rapid Mode only).
Root Port The port number of the root port for the switch. If the
switch is the Root Bridge this parameter is not valid, and
(n/a) is shown.
Root Path Cost The cost of the path to the Root from this switch. If the
switch is the Root Bridge this parameter is not valid and is
not shown.
Max Age The maximum age of received Configuration Message
information before it is discarded.
Hello Time The time interval between successive transmissions of the
Configuration Message information by a switch which is
the Root or which is attempting to become the Root.
Forward Delay In STP Standard mode, the time ports spend in the Listening
state before moving to the Learning state and the Learning
state before moving to the Forwarding state. In Rapid
mode, the maximum time taken to transition from
Discarding to Learning and Learning to Forwarding. In both
modes, the value is also used for the ageing timer for the
dynamic entries in the Forwarding Database.