Bidirectional Forwarding Detection (BFD) | 153To disable all VRRP sessions on an interface:To disable all VRRP sessions in a particular VRRP group:To disable a particular VRRP session:Configuring BFD for VLANsConfiguring BFD for VLANs is supported only on platforms c eBFD on Dell Force10 systems is a Layer 3 protocol. Therefore, BFD is used with routed VLANs. BFD onVLANs is analogous to BFD on physical ports. If no routing protocol is enabled, and a remote system fails,the local system does not remove the connected route until the first failed attempt to send a packet. If BFDis enabled, the local system removes the route when it stops receiving periodic control packets from theremote system.There is one BFD Agent for VLANs and port-channels, which resides on RP2 as opposed to the otheragents which are on the line card. Therefore, the 100 total possible sessions that this agent can maintain isshared for VLANs and port-channels.Configuring BFD for VLANs is a two-step process:1. Enable BFD globally on all participating routers. See Enabling BFD globally.2. Establish sessions with VLAN neighbors.Related configuration tasks• Change session parameters.• Disable BFD for VLANs.Step Task Command Syntax Command Mode1 Disable all VRRP sessions on aninterface.no vrrp bfd all-neighbors INTERFACEStep Task Command Syntax Command Mode1 Disable all VRRP sessions in aVRRP group.bfd disable VRRPStep Task Command Syntax Command Mode1 Disable a particular VRRP session onan interface.no vrrp bfd neighbor ip-address INTERFACE
