Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 370

7 Bidirectional Forwarding Detection (BFD) Bidirectional forwarding detection (BFD) is a detection protocol that provides fast forwarding path failure detection. The Dell Networking OS implementation is based on the standards specified in the IETF Draft draft-ietfbfd-base-03. bfd all-neighbors Enable BFD sessions with all neighbors discovered by Layer 3 protocols virtual router redundancy protocol (VRRP), intermediate system to intermediate system (IS-IS), open shortest path first (OSPF), OSPFv3, or border gateway protocol (BGP) on router interfaces, and (optionally) reconfigure the default timer values. C9000 Series Syntax Parameters [vrrp] bfd all-neighbors [interval interval min_rx min_rx multiplier value role {active | passive}] vrrp interval milliseconds min_rx milliseconds multiplier value role [active | passive] Enter the keyword vrrp in INTERFACE mode to enable BFD for VRRP. (OPTIONAL) Enter the keyword interval to specify nondefault BFD session parameters beginning with the transmission interval. The range is from 50 to 1000. The default is 200. Enter the keyword min_rx to specify the minimum rate at which the local system would like to receive control packets from the remote system. The range is from 50 to 1000. The default is 200. Enter the keyword multiplier to specify the number of packets that must be missed in order to declare a session down. The range is from 3 to 50. The default is 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. 370 Bidirectional Forwarding Detection (BFD)