User Manual

Item Description
Ifindex Interface index number
Port Id Interface's port ID
Role
Role of the interface. This is either Disabled, Designated,
Rootport, or Alternate
State
State of the interface. This is either Listening, Learning,
Forwarding, or Discarding
Designated Path Cost Path cost
Configured Path Cost Path cost setting of the interface
Add type Explicit ref count Number of STP domains associated with the interface
Designated Port Id ID of the designated port
Priority Priority of the interface
Root
Root bridge identifier. This consists of the root bridge priority
(the first four hexadecimal digits) and MAC address
Designated Bridge
Bridge identifier. This consists of the bridge priority (the first
four hexadecimal digits) and MAC address
Message Age Elapsed time of message
Hello Time Hello time setting value
Forward Delay Forward delay time setting value
Forward Timer Actual forward delay timer
Msg Age Timer
Timer at which the interface destroys BPDU information.
With the default setting, count down from 20 seconds for
STP, or count down Hello Time x 3 for RSTP/MSTP.
Hello Timer
Timer used to send hello. Hello packet is sent when 0 is
reached
topo change timer Topology change timer
forward-transitions Number of times that the interface has entered Forward State
Version Spanning tree protocol operating mode (version)
Received Type of BPDU that was received
Send Type of BPDU to transmit
portfast configured
Edge port setting value and current status. This will be either
portfast off, portfast on, or edgeport on
bpdu-guard
Setting and current status of the interface's BPDU guard
function
bpdu-filter
Setting and current status of the interface's BPDU filtering
function
root guard configured Setting and current status of the root guard function
Configured Link Type
Setting and current status of the interface's link type. Either
point-to-point or shared
auto-edge configured Auto-edge setting and current status
[Example]
Show the spanning tree status for LAN port #1.
SWP2>show spanning-tree interface port1.1
% Default: Bridge up - Spanning Tree Enabled - topology change detected
% Default: CIST Root Path Cost 0 - CIST Root Port 0 - CIST Bridge Priority 32768
% Default: Forward Delay 15 - Hello Time 2 - Max Age 20 - Transmit Hold Count 6 -
Max-hops 20
Command Reference | Layer 2 functions | 175