The DeviceLinkDown event indicates that the branch-side OSPF neighbor or the static route link has failed.

Alarm information

Event name Event level Status code Status description
DeviceLinkDown CRITICAL linkdown Device Link State Change


  • The customer-side switch has failed.
  • The customer-side switch is incorrectly configured.
  • The connection between the customer-side switch and the Smart Access Gateway has failed.


Check the customer-side switch. For more information, see Link failure between SAG-1000 and the switch.