45
MAC address :000f-e200-8048
Max age(s) :20
Forward delay(s) :15
Hello time(s) :2
Max hops :20
Table 12
display stp command output description
Field Description
CIST Bridge
The CIST bridge ID, which comprises the device's priority in the CIST and its MAC
address. For example, in output information "32768.000f-e200-2200", the
value preceding the dot is the device's priority in the CIST, and the value
following the dot is the device's MAC address.
Bridge ID
The bridge ID, which comprises the device's priority in VLAN 1 and its MAC
address. For example, in output information "32768.000f-e200-2200", the
value preceding the dot is the device's priority in VLAN 1, and the value following
the dot is the device's MAC address.
Bridge Times
Major parameters for the bridge:
•
Hello—Hello timer.
•
MaxAge—Max age timer.
•
FwDly—Forward delay timer.
•
MaxHop—Max hops within the MST region.
CIST Root/ERPC
CIST root ID and external path cost (the path cost from the device to the CIST root).
CIST RegRoot/IRPC
CIST regional root ID and internal path cost (the path cost from the device to the
CIST regional root).
Root ID / RPC
VLAN root ID and root path cost (the path cost from the device to the root).
CIST RootPortId
CIST root port ID. "0.0" indicates that the device is the root and there is no root
port.
Root PortId
VLAN root port ID. "0.0" indicates that the device is the root and there is no root
port.
BPDU-Protection
Global status of BPDU protection.
Bridge Config-
Digest-Snooping
Global status of Digest Snooping.
TC or TCN received
Number of TC/TCN BPDUs received in the MSTI.
Time since last TC
Time since the latest topology change in the MSTI.
[FORWARDING]
The port is in forwarding state.
[DISCARDING]
The port is in discarding state.
[LEARNING]
The port is in learning state.
Port Protocol
The status of the spanning tree feature on the port.
Port Role
Port role, which can be Alternate, Backup, Root, Designated, Master, or
Disabled.
Port Cost(Legacy)
Path cost of the port. The field in parentheses indicates the standard (legacy,
dot1d-1998, or dot1t) used for port path cost calculation.
•
Config—Configured value.
•
Active—Actual value.