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Chapter 43: Rapid Spanning Tree Protocol (RSTP) Procedures
616
Displaying RSTP Settings
To view the RSTP settings on the switch, use the SHOW SPANNING-
TREE in the Privileged Exec mode. The command has this format:
show spanning-tree [interface
port
]
Use the INTERFACE parameter to view the settings of the specified ports.
Otherwise, omit the parameter to view all the ports. Here is an example of
the information the command displays:
Figure 120. SHOW SPANNING-TREE Command for RSTP
% Default: Bridge up - Spanning Tree Disabled
% Default: Bridge Priority 32768
% Default: Forward Delay 15 - Hello Time 2 - Max Age 20
% Default: Root Id 8000:eccd6d4d5bf9
% Default: Bridge Id 8000:eccd6d4d5bf9
% Default: portfast bpdu-guard disabled
% Default: portfast bpdu-filter disabled
% Default: portfast errdisable timeout disabled
% Default: portfast errdisable timeout interval 300 sec
% port1.0.1: Port Id 8101 - Role Disabled - State Forwarding
% port1.0.1: Designated Path Cost 0
% port1.0.1: Configured Path Cost 2000000 - Add type Explicit ref count 1
% port1.0.1: Designated Port Id 8101 - Priority 128 -
% port1.0.1: Root 8000:000000000000
% port1.0.1: Designated Bridge 8000:000000000000
% port1.0.1: Max Age 20
% port1.0.1: Hello Time 2 - Forward Delay 15
% port1.0.1: Version Rapid Spanning Tree Protocol
% port1.0.1: Current portfast off
% port1.0.1: Current loop-guard off
% port1.0.1: Current portfast bpdu-guard off
% port1.0.1: Current portfast bpdu-filter off
% port1.0.1: Current root-guard off
% port1.0.1: Configured Link Type auto