Configuring Bfd Session Teardown Based On Echo Latency Detection; Delaying Bfd Session Startup Until Verification Of Echo Path And Latency - Cisco NCS 6000 Series Configuration Manual

Configuring BFD Session Teardown Based on Echo Latency Detection

Configuring BFD Session Teardown Based on Echo Latency Detection
You can configure BFD sessions on non-bundle interfaces to bring down a BFD session when it exceeds the
configured echo latency tolerance.
To configure BFD session teardown using echo latency detection, complete the following steps.
Before you enable echo latency detection, be sure that your BFD configuration supports echo mode.
Echo latency detection is not supported on bundle interfaces.
DETAILED STEPS
SUMMARY STEPS
1. configure
2. bfd
3. echo latency detect [percentage percent-value [count packet-count]
4. commit
DETAILED STEPS
Command or Action
Step 1
configure
Step 2
bfd
Example:
RP/0/RP0/CPU0:router(config)# bfd
Step 3 echo latency detect [percentage percent-value [count
packet-count]
Example:
RP/0/RP0/CPU0:router(config-bfd)# echo latency
detect
Step 4 commit

Delaying BFD Session Startup Until Verification of Echo Path and Latency

You can verify that the echo packet path is working and within configured latency thresholds before starting
a BFD session on non-bundle interfaces.
Note
Echo startup validation is not supported on bundle interfaces.
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
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Purpose
Enters BFD configuration mode.
Enables echo packet latency detection over the course of a
BFD session, where:
• percentage percent-value—Specifies the percentage
of the echo failure detection time to be detected as bad
latency. The range is 100 to 250. The default is 100.
• count packet-count—Specifies a number of
consecutive packets received with bad latency that will
take down a BFD session. The range is 1 to 10. The
default is 1.
Implementing BFD