Yamaha L2 Command Reference Manual page 177

[Parameter]
ifname : Name of LAN/SFP port or logical interface
Interface to show
[Input mode]
unprivileged EXEC mode, priviledged EXEC mode
[Description]
Shows the spanning tree status.
If "interface" is omitted, the status of all interfaces is shown.
In the case of MSTP, shows CIST (instance #0) information.
The following items are shown.
Bridge up
Root Path Cost
Root Port
Bridge Priority
Forward Delay
Hello Time
Max Age
Root Id
Bridge Id
topology change(s)
last topology change
Ifindex
Port Id
Role
State
Designated Path Cost
Configured Path Cost
Add type Explicit ref count
Designated Port Id
Priority
Root
Designated Bridge
Message Age
Hello Time
Item
Command Reference | Layer 2 functions | 177
Description
Spanning tree protocol enabled/disabled
Path cost of the root bridge
Interface index number of the root port. Shows 0 if it is the
root bridge. In the case of a logical interface, this is shown as
the interface index number of the logical interface.
Bridge priority
Root bridge forwarding delay time setting
Hello time setting of the root bridge
Maximum ageing time setting of the root bridge
Root bridge identifier. This consists of the root bridge priority
(the first four hexadecimal digits) and MAC address
Bridge identifier. This consists of the bridge priority (the first
four hexadecimal digits) and MAC address
Number of times that a topology change has occurred (to be
precise, this indicates the number of BPDU that have the TC
flag)
Date and time at which the last topology change occurred
Interface index number
Interface's port ID
Role of the interface. This is either Disabled, Designated,
Rootport, or Alternate
State of the interface. This is either Listening, Learning,
Forwarding, or Discarding
Path cost
Path cost setting of the interface
Number of STP domains associated with the interface
ID of the designated port
Priority of the interface
Root bridge identifier. This consists of the root bridge priority
(the first four hexadecimal digits) and MAC address
Bridge identifier. This consists of the bridge priority (the first
four hexadecimal digits) and MAC address
Elapsed time of message
Hello time setting value