We would like to receive linkdown, linkup, and environmental snmp events with DFM. The network consists of one "core" (6509) and 28 other closet switches (4506 and 3750) that connect to the core. The network is not high availability, but we would like to know if a power supply drops out or if an uplink goes down. We can force an environmental trap by shutting down a power supply. This works fine. When we force a shut on an uplink, we get nothing. To troubleshoot, we've turned on all traps. When we force a shut on an uplink, we'll receive the following trap: vlanTrunkPortDynamicStatusChange Trap. We can also get a trap for config: Cisco Configuration Management Trap. Here is the switch config:
snmp-server community ******* RO
snmp-server enable traps snmp authentication warmstart linkdown linkup coldstart
snmp-server enable traps envmon fan shutdown supply temperature
snmp-server host xxx.xxx.xxx.xxx informs *******
We've also made sure of the interface command: snmp trap link-status
Any help would be appreciated. Thanks.