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Field Description
CIST RootPortId
CIST root port ID. “0.0” indicates that the switch is the root and there is no root
port.
BPDU-Protection
Indicates whether BPDU protection is enabled globally.
Bridge Config-
Digest-Snooping
Indicates whether Digest Snooping is enabled globally on the bridge.
TC or TCN received
Number of received TC/TCN packets.
Time since last TC
Time since the latest topology change.
[FORWARDING]
The port learns MAC addresses and forwards user traffic.
[DISCARDING]
The port does not learn MAC addresses or forward user traffic.
[LEARNING]
The port learns MAC addresses but does not forward user traffic.
Port Protocol
Indicates whether STP is enabled on the port.
Port Role
Port role, which can be Alternate, Backup, Root, Designated, Master, or
Disabled.
Port Priority
Port priority.
Port Cost(Legacy)
Path cost of the port. The field in the bracket indicates the standard used for port
path cost calculation, which can be
legacy
,
dot1d-1998
, or
dot1t
.
Config
indicates the configured value, and
Active
indicates the actual value.
Desg. Bridge/Port
Designated bridge ID and port ID of the port
The port ID displayed is insignificant for a port which does not support port
priority.
Port Edged
Indicates whether the port is an edge port.
Config
indicates the configured value,
and
Active
indicates the actual value.
Point-to-point
Indicates whether the port is connected to a point-to-point link.
Config
indicates
the configured value, and
Active
indicates the actual value.
Transmit Limit
The maximum number of packets sent within each Hello time.
Protection Type
Protection type on the port:
•
Root—Root guard
•
Loop—Loop guard
•
BPDU—BPDU guard
•
None—No protection
MST BPDU Format
Format of the MST BPDUs that the port can send, which can be legacy or 802.1s.
Config
indicates the configured value, and
Active
indicates the actual value.
Port Config-
Digest-Snooping
Indicates whether digest snooping is enabled on the port.
Rapid transition
Indicates whether the current port rapidly transitions to the forwarding state.
Num of Vlans Mapped
Number of VLANs mapped to the current MSTI.
