Allied Telesis AT-8800 Series Switch - Manual (Page 95)

Layer 2 Switching 95
Software Release 2.6.1
C613-02039-00 REV A
The spanning tree algorithm can be recalculated at any time, and all timers and
counters be initialised, using the command:
RESET STP={stpname|ALL}
To show STP counters, use the command:
SHOW STP[={stpname|ALL}] COUNTER
Table 19: Parameters displayed in the output of the SHOW STP PORT command .
Parameter Meaning
STP The name of the STP that the port is a member of.
STP Status Whether this STP is enabled or disabled; one of ON or OFF.
Port The number of the port.
RSTP Port Role The role of the port; one of Disabled, Alternate, Backup,
Designated, or Root. (Rapid Mode only).
State The state of the port; one of “Disabled”, “Blocking”,
“Listening”, “Learning” or “Forwarding” for Standard
mode, and one of; “Disabled”, “Discarding”, “Learning”,
or “Forwarding” for Rapid mode.
Point To Point Whether the port has a point to point connection with
another bridge; one of NO or YES. (Rapid Mode only).
Port Priority The priority of the port. Used as part of the Port Identifier
field. In Standard mode it forms the upper 8 bits of the Port
Identifier field. In Rapid mode it forms the upper 4 bits of
the Port Identifier field.
Port Identifier The unique identifier of the port. This parameter is used to
determine the root port or designated port of the switch.
Pathcost The path cost of the port.
Designated Root The unique Bridge Identifier of the Root Bridge, as recorded
in the configuration BPDU.
Designated Cost The Designated Cost for the port.
Designated Bridge Either the unique Bridge Identifier of the switch, or the
unique Bridge Identifier of the switch believed to be the
Designated Bridge for the LAN to which the port is
attached.
Designated Port The Port Identifier of the port on the Designated Bridge
through which the Designated Bridge transmits
Configuration BPDU information stored by this port.
Edge Port An edge port is a port that attaches to a LAN that is known
to have no other bridges attached; one of YES, or NO.