OcNOS-SP : Layer 2 Guide : Layer 2 Command Reference : Spanning Tree Protocol Commands : show spanning-tree mst
show spanning-tree mst
Use this command to display the filtering database values. This command displays the number of instances created, and VLANs associated with it.
Command Syntax
show spanning-tree mst
show spanning-tree mst config
show spanning-tree mst detail
show spanning-tree mst detail interface IFNAME
show spanning-tree mst instance (<1-63>) interface IFNAME
show spanning-tree mst instance (<1-63> | te-msti)
show spanning-tree mst interface IFNAME
Parameters
config
Display configuration information.
detail
Display detailed information.
interface
Display interface information.
instance
Display instance information.
<1-63>
Specify the instance identifier.
te-msti
Traffic Engineering MSTI instance.
Command Mode
Exec mode and Privileged Exec mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#show spanning-tree mst
% 1: Bridge up - Spanning Tree Enabled
% 1: CIST Root Path Cost 0 - CIST Root Port 0 - CIST Bridge
Priority 32768
% 1: Forward Delay 15 - Hello Time 2 - Max Age 20 - Max-hops 20
% 1: CIST Root Id 80000002b328530a
% 1: CIST Reg Root Id 80000002b328530a
% 1: CIST Bridge Id 80000002b328530a
% 1: 2 topology change(s) - last topology change Wed Nov 19 22:43:21 2008
% 1: portfast bpdu-filter disabled
% 1: portfast bpdu-guard disabled
% 1: portfast errdisable timeout disabled
% 1: portfast errdisable timeout interval 300 sec%
% Instance VLAN
% 0: 1
% 2: 3-4
Table 4-13 Explains the show command output fields.
Table 4-13: show spanning-tree mst output fields
Field
Description
Bridge up
A network bridge is networking process that creates a single aggregate network from multiple communication networks or network segments.
CIST Root Path Cost
Calculated cost to reach the regional root bridge from the bridge where the command is entered.
CIST Root Port
Interface that is the current elected CIST root port for this bridge.
CIST Bridge
A CIST bridge is networking process that creates a single aggregate network from multiple communication networks.
Priority
Specify the port priority.
Forward Delay
Configured time an STP bridge port remains in the listening and learning states before transitioning to the forwarding state.
Hello Time
Configured number of seconds between transmissions of configuration BPDUs.
Max Age
Maximum age of received protocol BPDUs.
Max-hops
Configured maximum number of hops a BPDU can be forwarded in the MSTP region.
 
Last modified date: 07/06/2023