Specifications

show spanning-tree
245
Item Meaning Displayed information
the Switch
Path Cost Method Path cost length mode Long: 32-bit values are used for the path cost
value.
Max Age Maximum valid time for
BPDUs sent from the MST
instance 0 (IST) of the
Switch
Displays the maximum valid time for BPDUs sent
from the MST instance 0 (IST) bridge of the Switch.
Hello Time Interval for sending the
BPDUs of MST instance 0
(IST) of the Switch
Displays the interval for sending BPDUs that are
regularly sent from the MST instance 0 (IST) bridge
of the Switch.
Forward Delay Time required for a state
transition of the MSI
instance 0 (IST) port on the
Switch
Displays the time required for a state transition
when the state transition in the bridge of MSI
instance 0 (IST) on the Switch is triggered by the
timer.
Max Hops Maximum number of hops
in MST instance 0 (IST) of
the Switch
2 to 40
Displays the maximum number of hops for BPDUs
sent from the MST instance 0 (IST) bridge of the
Switch.
MST Instance MST instance ID Displays the MST instance ID and information
about the instance.
Time Since Topology
Change
Time since a topology
change was detected
hh:mm:ss (when the elapsed time is less than 24
hours)
ddd.hh:mm:ss (when the elapsed time exceeds
24 hours)
Over 1000 days (when the elapsed time is more
than 1000 days)
VLAN Mapped Instance mapping VLAN Lists the VLANs allocated to the MST instance. A
hyphen (-) is displayed if no VLANs are allocated.
Regional Root Bridge ID for the regional
root bridge of the MST
instance
Displays information about the regional root bridge
of the MST instance.
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 the
MST instance
Internal Root Cost Internal root path cost for
the MST instance
Path cost value from the Switch to the regional root
bridge of MST instance. 0 is displayed if the Switch
is the regional root bridge of the MST instance.