Mstp Configuration Example - 3Com MSR 50 Series Configuration Manual

482 C 23: MSTP C
HAPTER
MSTP Configuration
Example
ONFIGURATION
To do...
View the information of port role
calculation history for the specified
MSTP instance or all MSTP
instances
View the statistics of TC/TCN
BPDUs sent and received by all
ports in the specified MSTP
instance or all MSTP instances
View the status information and
statistics information of MSTP
View the MST region
configuration information that has
taken effect
View root bridge information of all
MSTP instances
View the list of VLANs with VLAN
Ignore enabled
Clear the statistics information of
MSTP
Network requirements
Configure MSTP so that packets of different VLANs are forwarded along different
spanning trees. The specific configuration requirements are as follows:
All devices on the network are in the same MST regions.
■
Packets of VLAN 10 are forwarded along MST region 1, those of VLAN 30 are
■
forwarded along MST instance 3, those of VLAN 40 are forwarded along MST
instance 4, and those of VLAN 20 are forwarded along MST instance 0.
Device A and Device B are convergence layer devices, while Device C and
■
Device D are access layer devices. VLAN 10 and VLAN 30 are terminated on the
convergence layer devices, and VLAN 40 is terminated on the access layer
devices, so the root bridges of MST instance 1 and MST instance 3 are Device A
and Device B respectively, while the root bridge of MST instance 4 is Device C.
Network diagram
Figure 136 Network diagram for MSTP configuration
Device A
Permit:
VLANs 10, 20
Device C
Use the command...
display stp [ instance
instance-id ] history
display stp [ instance
instance-id ] tc
display stp [ instance
instance-id ] [ interface
interface-list ] [ brief ]
display stp
region-configuration
display stp root
display stp ignored-vlan
reset stp [ interface
interface-list ]
Permit: all VLAN s
Permit:
Permit:
VLANs 10, 20
VLANs 20, 30
Permit: VLANs 20, 40
Remarks
Available in any view
Available in any view
Available in any view
Available in any view
Available in any view
Available in any view
Available in user view
Device B
Permit:
VLANs 20, 30
Device D