Meaning and handling method of the ALM_GFP_dLFDF alarm.
The ALM_GFP_dLFD alarm indicates that generic framing procedure (GFP) frames are out of frame. This alarm is generated when the GFP state machine escapes from the SYNC state, and is cleared when the state machine enters the SYNC state again.
1. Check whether the number of uplink (or downlink) timeslots bound to the VCTRUNK at the local end is consistent with the number of downlink (or uplink) timeslots bound to the VCTRUNK at the peer end.
2. Check whether the fiber connector is loose or contaminated and whether an optical cable is faulty or an optical transmission component is in poor contact.
3. If the Ethernet board works with an interface board, replace the interface board first. If the board does not work with an interface board, replace the board directly.