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LGB5028A User‘s Manual
724-746-5500 | blackbox.com
Chapter 6: Configuration
Parameter Description
Configuration Identification
Configuration Name: The name identifying the VLAN to MSTI mapping. Bridges must share the name and revision, as well as
the VLAN-to-MSTI mapping configuration to share spanning trees for MSTIs (Intra-region). The name must be less than 32
characters long.
Configuration Revision: The revision of the MSTI configuration named above. This must be an integer between 0 and 65535.
MSTI Mapping
MSTI: Show the bridge instance. The CIST is not available for explicit mapping, so it will receive the VLANs not explicitly mapped.
VLANs Mapped: The list of VLANs mapped to the MSTI. The VLANs must be separated with a comma and/or space. A VLAN
can only be mapped to one MSTI. An unused MSTI should just be left empty. (that is, not have any VLANs).
Buttons
Save: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
6.4.3 MSTI Priorities
When you implement a Spanning Tree protocol on the switch, the CIST is the default instance that is always active. It controls the
bridge priority. Lower numeric values have better priority. The bridge priority plus the MSTI instance number, concatenated with
the 6-byte MAC address of the switch, forms a Bridge Identifier.
The section describes how to inspect and/or change the current STP MSTI bridge instance priority configurations.
Web Interface
To configure the Spanning Tree MSTI Priorities parameters in the Web interface:
1. Click “Configuration,” “Spanning Tree,” “MSTI Priorities.”
2. Use the drop-down menu to select the priority (maximum is 240). Priority default is 128.
3. Click “Save” to save the setting
4. To cancel the setting, click the “Reset” button. It will revert to previously saved values.
