Display And Maintenance Commands For The Spanning Tree Protocols; Spanning Tree Configuration Examples; Example: Configuring Mstp - H3C S6850 Series Configuration Manual

Display and maintenance commands for the
spanning tree protocols
Execute display commands in any view and reset command in user view.
Task
Display the spanning tree status
and statistics.
Display the port role calculation
history for the specified MSTI or all
MSTIs.
Display the incoming and outgoing
TC/TCN BPDU statistics by all
ports in the specified MSTI or all
MSTIs.
Display history about ports
blocked by spanning tree
protection features.
Display BPDU statistics on ports.
Display information about ports
shut down by spanning tree
protection features.
Display the MST region
configuration information that has
taken effect.
Display the root bridge information
of all MSTIs.
Clear the spanning tree statistics.

Spanning tree configuration examples

Example: Configuring MSTP

Network configuration
As shown in
B work at the distribution layer. Device C and Device D work at the access layer.
Configure MSTP so that frames of different VLANs are forwarded along different spanning trees.
•
VLAN 10 frames are forwarded along MSTI 1.
•
VLAN 30 frames are forwarded along MSTI 3.
•
VLAN 40 frames are forwarded along MSTI 4.
•
VLAN 20 frames are forwarded along MSTI 0.
Figure 22, all devices on the network are in the same MST region. Device A and Device
Command
display stp [ instance instance-list | vlan
vlan-id-list ] [ interface interface-list |
slot slot-number ] [ brief ]
display stp [ instance instance-list | vlan
vlan-id-list ] history [ slot slot-number ]
display stp [ instance instance-list | vlan
vlan-id-list ] tc [ slot slot-number ]
display stp abnormal-port
display stp bpdu-statistics [ interface
interface-type interface-number [ instance
instance-list ] ]
display stp down-port
display stp region-configuration
display stp root
reset stp [ interface interface-list ]
57