Using SNMP to Configure MSTP

1. Use the objects in dot1qVlanStaticTable (in dot1qVlan in the QBRIDGE-MIB module) to create VLANs 10 and 20.
2. To enable spanning tree globally, set the agentStpAdminMode object in the 200 Series-SWITCHING-MIB module to enable (2).
   The full path to the object is iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).broadcom(4413). broadcomProducts(1).fastPath(1).fastPathSwitching(1).agentConfigGroup(2).agentStpSwitchConfigGroup(15).agentStpAdminMode(6).
3. Use the agentStpConfigName object in the agentStpSwitchConfigGroup to change the name so that all the bridges that want to be part of the same region can form the region.
4. Use the agentStpMstRowStatus object in the agentStpMstTable to create MST instances 10 and 20.
   

   
5. Use the agentStpMstBridgePriority object to set the bridge priorities for MST 10 and MST 20:
   • For MST ID 10, set the value to 16384 to make it the root bridge.
   • For MST ID 20, set the value to 61440 to ensure the other bridge is the root bridge.
6. Use the agentStpMstVlanRowStatusAssociate object in the agentStpMstVlanTable to associate MST instance 10 to VLAN 10 and MST instance 20 to VLAN 20.
   • For MST ID 20, the OID to set is 1.3.6.1.4.1.4413.1.1.1.2.15.14.1.1.10.10 (the final .10 is the VLAN ID)
   • For MST ID 20, the OID to set is 1.3.6.1.4.1.4413.1.1.1.2.15.14.1.1.20.20

   Set the value to CreateAndGo (4).

7. Use the agentStpPortState in agentStpPortTable under agentStpSwitchConfigGroup to enable STP on interface 1/0/1 and interface 1/0/2.
   For instance 1 and 2, set the value to enable (1).
8. Use the agentStpMstPortPriority object in agentStpMstPortTable to change the port priority on interface 1/0/2 to force the port to be the root port on the non-root bridge.