Enabling SNMP notifications for new-root election and topology change events

This feature enables the device to generate logs and report new-root election events or spanning tree topology changes to SNMP. For the event notifications to be sent correctly, you must also configure SNMP on the device. For more information about SNMP configuration, see the network management and monitoring configuration guide for the device.

When you use the snmp-agent trap enable stp [ new-root | tc ] command, follow these guidelines:

The new-root keyword applies only to STP, MSTP, and RSTP modes.
The tc keyword applies only to PVST mode.
In STP, MSTP, or RSTP mode, the snmp-agent trap enable stp command enables SNMP notifications for new-root election events.
In PVST mode, the snmp-agent trap enable stp enables SNMP notifications for spanning tree topology changes.

To enable SNMP notifications for new-root election and topology change events:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Enable SNMP notifications for new-root election events.	In STP, MSTP, or RSTP mode, execute either of the following commands: snmp-agent trap enable stp new-root snmp-agent trap enable stp	The default settings are as follows: SNMP notifications are disabled for new-root election events. In MSTP mode, SNMP notifications are enabled in MSTI 0 and disabled in other MSTIs for spanning tree topology changes. In PVST mode, SNMP notifications are disabled for spanning tree topology changes in all VLANs.
3. Enable SNMP notifications for spanning tree topology changes.	In PVST mode, execute either of the following commands: snmp-agent trap enable stp tc snmp-agent trap enable stp
4. Enable the device to generate a log when it detects or receives a TCN BPDU in PVST mode.	stp log enable tc	By default, the device does not generate a log when it detects or receives a TCN BPDU in PVST mode.

prev	up	next
Enabling BPDU transparent transmission on a port	home	Displaying and maintaining the spanning tree