198 | Bidirectional Forwarding Detectionw w w . d e l l . c o m | s u p p o r t . d e l l . c o m To change parameters for a particular VRRP session:View session parameters using the command show bfd neighbors detail, as shown in Figure 9-8 onpage 179.Disabling BFD for VRRPIf any or all VRRP sessions are disabled, the sessions are torn down. A final Admin Down control packetis sent to all neighbors and sessions on the remote system change to the Down state (Message 3 onpage 179).To 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 VLANsBFD 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.Step Task Command Syntax Command Mode1 Change parameters for a particularVRRP session.vrrp bfd neighbor ip-address intervalmilliseconds min_rx milliseconds multipliervalue role [active | passive]INTERFACEStep 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
