Administrator Guide

multiplier value Enter the keywords 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.
role [active |
passive]
Enter the role that the local system assumes:
• Active — active system initiates the BFD session. Both systems can be active for
the same session.
• Passive — passive system does not initiate a session. It only responds to a request
for session initialization from the active system.
The default is Active.
Defaults See Parameters.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.13(0.0) Introduced the vrf keyword on S3100 series, S3048–ON, S4048–ON, S4048T-ON,
S5000, S6000, S6000–ON, S6010–ON, S6100–ON, C9010, Z9500, and Z9100–ON.
9.12(1.0) Introduced on the S5048F–ON.
9.11(2.5) Introduced the vrf keyword on the Z9100–ON.
9.11(0.0) Introduced the prefix-list keyword.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.3.(0.0) Introduced on S6000.
9.2(1.0) Introduced on the Z9500.
9.2.(0.0) Introduced on Z9000, S4810, and S4820T.
8.2.1.0 Introduced on the E-Series.
7.6.1.0 Introduced on the C-Series.
7.4.1.0 Introduced on the E-Series.
ip ospf bfd all-neighbors
Establish BFD sessions with all OSPF neighbors on a single interface or use non-default BFD session parameters.
Syntax
ip ospf bfd all-neighbors [disable | [interval interval min_rx min_rx
multiplier value role {active | passive}]]
To disable all BFD sessions on an OSPF interface implicitly, use the no ip ospf bfd all-neighbors
disable command in interface mode..
Parameters
disable (OPTIONAL) Enter the keyword disable to disable BFD on this interface.
Bidirectional Forwarding Detection (BFD) 329