Dell S5000 FTOS 9.0(1.3) Configuration Guide for the Switch - Page 178

www.dell.com | support.dell.com To change session parameters on an interface: Step 1 Task Change session parameters for all sessions on an interface. Command Syntax bfd interval milliseconds min_rx milliseconds multiplier value role [active | passive] Command Mode INTERFACE VLAN View session parameters using the command show bfd neighbors detail, as shown in Figure 8-10 Disabling BFD for VLANs If BFD is disabled on an interface, sessions on the interface are torn down. A final Admin Down control packet is sent to all neighbors, and sessions on the remote system change to the Down state (Message 3). To disable BFD on a VLAN interface: Step 1 Task Disable all sessions on a VLAN interface. Command Syntax no bfd enable Command Mode INTERFACE VLAN Configuring BFD for Port-Channels Configuring BFD for port-channels is supported on the S5000 platform. BFD on port-channels 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 BFD is enabled, the local system removes the route when it stops receiving periodic control packets from the remote system. There is one BFD Agent for VLANs and port-channels. Therefore, the 100 total possible sessions that this agent can maintain is shared for VLANs and port-channels. Configuring BFD for port-channels is a two-step process: 1. Enabling BFD globally. 2. Establishing sessions on port-channels. Related configuration tasks • To establish a session on a port-channel:. Establishing sessions on port-channels To establish a session, BFD must be enabled at interface level on both ends of the link, as shown in the example below. The session parameters do not need to match. 178 | Bidirectional Forwarding Detection (BFD)