Specifications

Switching show stp port 8-207
Software Release 2.7.3
C613-03098-00 REV A
Table 8-54: Parameters in the output of the show stp port command
Parameter Meaning
STP Name of the STP of which the port is a member.
STP Status Whether the STP is enabled.
Port Port number.
RSTP Port Role Role of the port, rapid mode only:
Disabled
Alternate
Backup
Backup
(Loopback
Disabled)
Same as Backup except all packets are dropped,
including BPDUs. The port transmitted and received
the same RSTP BPDU.
Designated
Root
State Status of the port:
Disabled Standard and rapid modes
Blocking Standard mode
Listening Standard mode
Learning Standard and rapid modes
Forwarding Standard and rapid modes
Discarding Rapid mode
Point To Point Whether the port has a point to point connection with another
bridge (rapid mode only).
Port Priority 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 Unique identifier of the port. This parameter determines the root
port or designated port of the switch.
Pathcost Path cost of the port.
Designated Root Unique Bridge Identifier of the Root Bridge, as recorded in the
configuration BPDU.
Designated Cost 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 Port Identifier of the port on the Designated Bridge through
which the Designated Bridge transmits Configuration BPDU
information stored by this port.
Edge Port Whether this is an edge port, which is one that attaches to a LAN
and is known to have no other bridges attached (rapid mode
only).
VLAN membership Number of VLANs the port is a member of within this STP
instance.
Counters
Loopback Disabled Number of transitions to the Backup (Loopback Disabled) RSTP
port role.