Dell 9.7(0.0) manual Bidirectional Forwarding Detection BFD, Bfd all-neighbors

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Bidirectional Forwarding Detection (BFD)

Bidirectional forwarding detection (BFD) is a detection protocol that provides fast forwarding path failure detection.

The Dell Networking operating software implementation is based on the standards specified in the IETF Draft draft-ietf-bfd-base-03 and supports BFD on all Layer 3 physical interfaces including VLAN interfaces and port-channels

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.

S6000

Syntax

bfd all-neighbors [interval interval min_rx min_rx multiplier value role {active passive}]

Parameters

interval milliseconds

min_rx milliseconds

multiplier value

role [active passive]

(OPTIONAL) Enter the keyword interval to specify non- default BFD session parameters beginning with the transmission interval. The range is from 50 to 1000. The default is 100.

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 100. The default is 100.

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.

•Passive — The passive system does not initiate a session. It only responds to a request for session initialization from the active system.

The default is active.

Bidirectional Forwarding Detection (BFD) 317