Specifications

show spanning-tree
244
Item Meaning Displayed information
CIST Root Bridge ID for the CIST root
bridge
--
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC MAC address MAC address for the CIST root bridge
External Root Cost External root path cost Path cost value from the Switch's CIST internal
bridge to the CIST root bridge. 0 is displayed if the
Switch is the CIST root bridge.
Root Port Root port Displays the port number of the CIST root port. If
the CIST root port is a link aggregation port, the link
aggregation port list and the channel group number
are displayed.
A hyphen (-) is displayed if the Switch is the CIST
root bridge.
Max Age Maximum valid time of
BPDUs sent from the CIST
root bridge
Displays the maximum valid time of BPDUs sent
from the CIST root bridge.
Forward Delay Time required for a state
transition of the CIST root
bridge port
Displays the time required for a state transition
when the state transition in the CIST root bridge is
triggered by the timer
Regional Root Bridge ID for the regional
root bridge of MST
instance 0 (IST)
Displays information about the regional root bridge
of MST instance 0 (IST).
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC MAC address MAC address for the regional root bridge of MST
instance 0 (IST)
Internal Root Cost Internal root path cost for
MST instance 0 (IST)
Path cost value from the Switch to the regional root
bridge of MST instance 0 (IST). 0 is displayed if the
Switch is the regional root bridge of MST instance 0
(IST).
Remaining Hops Number of remaining hops 0 to 40
Displays the remaining number of hops for BPDUs
that the regional root bridge of MST instance 0 (IST)
sends.
Bridge ID Bridge ID for MST instance
0 (IST) of the Switch
Displays information about the bridge of MST
instance 0 (IST) of the Switch.
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC MAC address MAC address of the Switch
Regional Bridge Status Status of the bridge for
MST instance 0 (IST) of
Root: Root bridge
Designated: Designated bridge