White Papers

Version Description
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2.0.0 Introduced on the Z9000, S4820T, and S4810.
Usage
Information
This command provides the flexibility to fine-tune the timer values based on individual interface needs
when you configure ipv6 ospf BFD in CONFIGURATION mode. Any timer values specified with this
command overrides timers set using the bfd all-neighbors command. Using the no form of this
command does not disable BFD if you configure BFD in CONFIGURATION mode.
To disable BFD on a specific interface while you configure BFD in CONFIGURATION mode, use the
keyword disable.
isis bfd all-neighbors
Enable BFD on all IS-IS neighbors discovered on an interface.
Syntax
isis bfd all-neighbors [disable | [interval interval min_rx min_rx
multiplier value role {active | passive}]]
To remove all BFD sessions with IS-IS neighbors discovered on this interface, use the no isis bfd
all-neighbors [disable | [interval interval min_rx min_rx multiplier value
role {active | passive}]] command.
Parameters
disable (OPTIONAL) Enter the keyword disable to disable BFD on this interface.
interval
milliseconds
(OPTIONAL) Enter the keywords interval to specify non-default BFD session
parameters beginning with the transmission interval. The range is from 50 to 1000.
The default is 200.
min_rx
milliseconds
Enter the keywords 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.
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 INTERFACE
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
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
334 Bidirectional Forwarding Detection (BFD)