136 | Bidirectional Forwarding Detection (BFD)w w w . d e l l . c o m | s u p p o r t . d e l l . c o m Disabling BFD for static routesIf BFD is disabled, all static route BFD sessions are torn down. A final Admin Down packet is sent to allneighbors on the remote systems, and those neighbors change to the Down state (Message 3).To disable BFD for static routes:Configuring BFD for OSPFBFD for OSPF is only supported on platforms: e c zWhen using BFD with OSPF, the OSPF protocol registers with the BFD manager on the RPM. BFDsessions are established with all neighboring interfaces participating in OSPF. If a neighboring interfacefails, the BFD agent on the line card notifies the BFD manager, which in turn notifies the OSPF protocolthat a link state change occurred.Configuring BFD for OSPF is a two-step process:1. Enable BFD globally. See Enabling BFD globally.2. Establish sessions for all or particular OSPF neighbors.Related configuration tasks• Change session parameters.• Disable BFD sessions for OSPF.Establishing sessions with OSPF neighborsBFD sessions can be established with all OSPF neighbors at once, or sessions can be established with allneighbors out of a specific interface. Sessions are only established when the OSPF adjacency is in the fullstate.Step Task Command Syntax Command Mode1 Disable BFD for static routes. no ip route bfd CONFIGURATION
