Dell S6000 FTOS 9.0(2.0) Command Line Reference Guide for the System - Page 206

www.dell.com | support.dell.com Defaults Command Modes Command History Usage Information Related Commands multiplier value role [active | passive] Parameters ROUTER OSPF ROUTER BGP ROUTER ISIS Enter this keyword to specify the number of packets that must be missed in order to declare a session down. Range: 3 to 50 Default: 3 Enter the role that the local system assumes: • Active-The active system initiates the BFD session. Both systems can be active for the same session. • Passive-The passive system does not initiate a session. It only responds to a request for session initialization from the active system. Default: Active Version 9.0.2.0 Version 9.0.0.0 Version 8.3.8.0 Introduced on the S6000 BFD for BGP was introduced on the Z9000. BFD for BGP was introduced on the S4810. All neighbors inherit the timer values configured with the bfd neighbor command except in the following cases: • Timer values configured with the isis bfd all-neighbors or ip ospf bfd all-neighbors commands in INTERFACE mode override timer values configured with the bfd neighbor command. Likewise, using the no bfd neighbor command does not disable BFD on an interface if BFD is explicitly enabled using the command isis bfd all-neighbors. • Neighbors that have been explicitly enabled or disabled for a BFD session with the bfd neighbor or neighbor bfd disable commands in ROUTER BGP mode do not inherit the global BFD enable/disable values configured with the bfd neighbor command or configured for the peer group to which a neighbor belongs. The neighbors inherit only the global timer values (configured with the bfd neighbor command). neighbor bfd neighbor bfd disable Explicitly enable a BFD session with a BGP neighbor or a BGP peer group. Explicitly disable a BFD session with a BGP neighbor or a BGP peer group. neighbor bfd z S6000 Explicitly enable a BFD session with a BGP neighbor or a BGP peer group. 206 | Bidirectional Forwarding Detection (BFD)