Enabling SNMP notifications and Syslog messages for LLDP-MED topology changes
SNMP notifications identify the local port where the topology change occurred, as well as the device capability of the remote Endpoint device that was connected to or removed from the port.
When you enable LLDP-MED SNMP notifications, corresponding Syslog messages are enabled as well. When you enable LLDP-MED SNMP notifications, the device will send traps and Syslog messages when an LLDP-MED Endpoint neighbor entry is added or removed.
SNMP notifications and corresponding Syslog messages are disabled by default. To enable them, enter a command such as the following at the Global CONFIG level of the CLI.
device(config)#lldp enable snmp med-topo-change-notifications ports e 1/4/4 to 1/4/6