Cisco ASR 9000 Series Routing Configuration Guide

This feature is applicable only for Cisco standard BFD over bundle per-member link mode.Note
See the BFD Commands on Cisco ASR 9000 Series Router module of Cisco ASR 9000 Series Aggregation
Services Router Routing Command Reference guide for details on these commands.
The echo timer behavior with the global and local echo configuration combination is illustrated in the following
table:
Table 4: Echo timer behavior with global and local echo configuration
Echo value used by the BoB
session based on global and local
configurations
Local bundle ethernet interface
specific echo min-interval value
Command: bfd address-family ipv4
echo minimum-interval
Global echo min-interval value
Command: bfd echo ipv4
bundle-per-member
minimum-interval
Async * multiplierNot ConfiguredNot configured
Async * multiplierNot ConfiguredGlobal value is lesser than Async *
multiplier
GlobalNot ConfiguredGlobal value is greater than Async
* multiplier
LocalLocal is greater than Async *
Multiplier
Not configured
Async * multiplierLocal is lesser than Async *
Multiplier
Not configured
LocalLocal is greater than Async *
Multiplier
Global is configured (any value)
Async * multiplierLocal is lesser than Async *
Multiplier
Global is configured (any value)
Note
•
Multiplier in the table refers to the remote multiplier value.
•
Async refers to the negotiated asynchronous minimum interval value.
When R5.3.0 devices have BoB sessions with devices running on versions lesser than R5.3.0, it is recommended
to retain the default echo timer value or configure identical values on both the devices.
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
248
Implementing BFD
Echo Timer configuration for BFD on Bundle Interfaces

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English