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54 Rapier Switch User Guide
Rapier Switch Software Release 2.2.1
C613-02013-00 Rev A
To restore default port pathcost and priority, use the command:
SET STP PORT={port-list|ALL} DEFAULT
When an STP is enabled in a looped or meshed network, it disables and
enables particular ports belonging to it dynamically, to eliminate redundant
links. All ports in a VLAN belong to the same STP, and their participation in
STP configuration, and hence the possibility of them being elected to the STP’s
active topology is enabled by default. To enable or disable particular ports, use
the commands:
ENABLE STP PORT={port-list|ALL}
DISABLE STP PORT={port-list|ALL}
To display STP port information, use the command:
SHOW STP PORT[={port-list|ALL}]
Figure 15: Example output from the SHOW STP PORT command.
STP Port Information
------------------------------------------------------------
Port .................... 1
State ................. Forwarding
STP ................... default
STP Status ............ ON
Port Priority ......... 128
Port Identifier ....... 8001
Pathcost .............. 19
Designated Root ....... 32768 : 00-00-cd-00-45-c7
Designated Cost ....... 0
Designated Bridge ..... 32768 : 00-00-cd-00-a9-a5
Designated Port ....... 8001
------------------------------------------------------------
Table 11: Parameters displayed in the output of the SHOW STP PORT command
Parameter Meaning
Port The number of the port.
State The state of the port; one of “Disabled”, “Blocking”,
“Listening”, “Learning” or “Forwarding”.
STP The name of the STP that the port is a member of.
STP Status The status of the STP that the port is a member of; one of
“ON” or “OFF”.
Port Priority The priority of the port. Used as part of the Port Identifier
field, it forms the upper 8 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.