Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 182
Configuring BFD for VRRP, Disabling BFD for IS-IS
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www.dell.com | support.dell.com To change parameters for IS-IS sessions on an interface: Step 1 Task Change parameters for all IS-IS sessions out of an interface. Command Syntax isis bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role [active | passive] Command Mode INTERFACE View session parameters using the command show bfd neighbors detail, as shown in the example in Changing physical port session parameters. Disabling BFD for IS-IS If BFD is disabled globally, all sessions are torn down, and sessions on the remote system are placed in a Down state. If BFD is disabled on an interface, sessions on the interface are torn down, and sessions on the remote system are placed in a Down state (Message 3). Disabling BFD does not trigger a change in BFD clients; a final Admin Down packet is sent before the session is terminated. To disable BFD sessions with all IS-IS neighbors: Step 1 Task Disable BFD sessions with all IS-IS neighbors. Command Syntax no bfd all-neighbors Command Mode ROUTER-ISIS To disable BFD sessions with all IS-IS neighbors out of an interface: Step 1 Task Disable BFD sessions with all IS-IS neighbors out of an interface Command Syntax isis bfd all-neighbors disable Command Mode INTERFACE Configuring BFD for VRRP When using BFD with VRRP, the VRRP protocol registers with the BFD manager on the RPM. BFD sessions are established with all neighboring interfaces participating in VRRP. If a neighboring interface fails, the BFD agent on the line card notifies the BFD manager, which in turn notifies the VRRP protocol that a link state change occurred. Configuring BFD for VRRP is a three-step process: 1. Enable BFD globally. Refer to Enabling BFD globally. 2. Establish VRRP BFD sessions with all VRRP-participating neighbors. 3. On the master router, establish a VRRP BFD sessions with the backup routers. Refer to Establishing sessions with all VRRP neighbors. 182 | Bidirectional Forwarding Detection
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