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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Command Reference, Cisco IOS Release 15.1(3)MR
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Chapter Cisco MWR 2941 Router Command Reference, Release 15.1(3)MR
show spanning-tree mst
Usage Guidelines The valid values for interface depend on the specified interface type and the chassis and module that are
used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T
Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 2 to 13
and valid values for the port number are from 1 to 48.
The number of valid values for port-channel number are a maximum of 64 values ranging from 1 to
282. The port-channel number values from 257 to 282 are supported on the CSM and the FWSM only.
The number of valid values for vlan are from 1 to 4094.
Valid values for instance-id are from 0 to 4094.
In the output display of the show spanning-tree mst configuration command, a warning message may
display. This message appears if you do not map secondary VLANs to the same instance as the associated
primary VLAN. The display includes a list of the secondary VLANs that are not mapped to the same
instance as the associated primary VLAN. The warning message is as follows:
These secondary vlans are not mapped to the same instance as their primary:
-> 3
In the output display of the show spanning-tree mst configuration digest command, if the output applies to
both standard and prestandard bridges at the same time on a per-port basis, two different digests are
displayed.
If you configure a port to transmit prestandard BPDUs only, the prestandard flag displays in the show
spanning-tree commands. The variations of the prestandard flag are as follows:
12.2(18)SXF The changes are as follows:
• The range of valid values for the instance-id changed to 0 to 4094.
• The output of the show spanning-tree mst configuration command has
changed as follows:
–
Displays the instance identification from 0 to 4094.
–
Displays the number of the currently configured instances from 0 to
65.
–
Adds the digest keyword to display the MD5 digest of the
VLAN-to-instance mapping of the MST configuration.
• The output of the show spanning-tree mst detail command has
changed as follows:
–
The Regional Root field replaced the IST Master field.
–
The Internal Path field replaced the Path Cost field.
–
The Designated Regional Root field replaced the Designated IST
Master field.
–
The txholdcount field was added in the Operational parameter line.
• Displays new roles for all MST instances on the CIST root port.
• Displays the prestandard flag.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
15.0(1)MR This command was integrated into Cisco IOS Release 15.0(1)MR.
Release Modification
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