A trap is send each time an event happens. A trap message contains among other things the trapID. There are 7 different trapIDs:
- Cold boot: The device had to do a cold reboot.
- Warm boot: The device had to do a warm reboot.
- Link Down: No connection to device.
- Link Up: Connection to device.
- Authentication Error: No authentication due to an error.
- EGP Neighbour lost: No connection to another router in the LAN.
- Internal Information: text depends on manufacturer