Configuring the Spanning Tree Protocol
Mapping VLANs to a MST Instance
Cisco Small Business 300 Series Managed Switch Administration Guide 136
12
STEP 3 Enter the parameters.
• Region Name—Define an MSTP region name.
• Revision—Define an unsigned 16-bit number that identifies the revision of
the current MST configuration. The field range is from 0 to 65535.
• Max Hops—Set the total number of hops that occur in a specific region
before the BPDU is discarded. Once the BPDU is discarded, the port
information is aged out. The field range is from 1 to 40.
• IST Master—Displays the region’s master.
STEP 4 Click Apply. The MSTP properties are defined, and the switch is updated.
Mapping VLANs to a MST Instance
The
VLAN to MST Instance Page
enables you to map each VLAN to a Multiple
Spanning Tree Instance (MSTI). For devices to be in the same region, they must
have the same mapping of VLANs to MSTIs.
NOTE The same MSTI can be mapped with more than one VLAN, but each VLAN can only
have one MST Instance attached to it.
Configuration on this page (and all of the MSTP pages) applies if the system STP
mode is MSTP.
Up to seven MST instances can be defined on Cisco Small Business 300 Series
switches. For those VLANs that are not explicitly mapped to one of the MST
instances, the switch automatically maps them to the CIST (Core and Internal
Spanning Tree) instance. The CIST instance is MST instance 0.
To map VLANs to MST Instances:
STEP 1 Click Spanning Tree > VLAN to MST Instance. The
VLAN to MST Instance Page
displays.
The VLAN to MST Instance page contains the following fields:
• MST Instance ID—All MST instances are displayed.
• VLANs—All VLANs belonging to the MST instance are displayed.
To Next Page
Loading...
Need help?
General
