Item Description
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.
SWR2311P>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
% Default: CIST Root Id 8000ac44f2300110
% Default: CIST Reg Root Id 8000ac44f2300110
% Default: CIST Bridge Id 8000ac44f2300110
% Default: 6 topology change(s) - last topology change Tue Feb 27 19:52:52 2018
% port1.1: Port Number 905 - Ifindex 5001 - Port Id 0x8389 - Role Designated -
State Forwarding
% port1.1: Designated External Path Cost 0 -Internal Path Cost 0
% port1.1: Configured Path Cost 20000 - Add type Explicit ref count 1
% port1.1: Designated Port Id 0x8389 - CIST Priority 128 -
% port1.1: CIST Root 8000ac44f2300110
% port1.1: Regional Root 8000ac44f2300110
% port1.1: Designated Bridge 8000ac44f2300110
% port1.1: Message Age 0 - Max Age 20
% port1.1: CIST Hello Time 2 - Forward Delay 15
% port1.1: CIST Forward Timer 0 - Msg Age Timer 0 - Hello Timer 1 - topo change
timer 0
% port1.1: forward-transitions 1
% port1.1: Version Multiple Spanning Tree Protocol - Received MSTP - Send MSTP
% port1.1: No portfast configured - Current portfast off
% port1.1: bpdu-guard disabled - Current bpdu-guard off
% port1.1: bpdu-filter disabled - Current bpdu-filter off
% port1.1: no root guard configured - Current root guard off
% port1.1: Configured Link Type point-to-point - Current point-to-point
% port1.1: No auto-edge configured - Current port Auto Edge off
178 | Command Reference |
Layer 2 functions
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