Specifications

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7-10
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 5.0(3)U2(2)
OL-25782-02
Chapter 7 Configuring Bidirectional Forwarding Detection for BGP
Configuring BFD
Configuring BFD Echo Function
You can configure the BFD echo function on one or both ends of a BFD-monitored link. The echo
function slows down the required minimum receive interval, based on the configured slow timer. The
RequiredMinEchoRx BFD session parameter is set to zero if the echo function is disabled. The slow
timer becomes the required minimum receive interval if the echo function is enabled.
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
Enable the BFD feature. See the “Enabling the BFD Feature” section on page 7-6.
Configure the BFD session parameters. See the “Configuring Global BFD Parameters” section on
page 7-6 or the “Configuring BFD on an Interface” section on page 7-8.
Ensure that Internet Control Message Protocol (ICMP) redirect messages are disabled on BFD-enabled
interfaces. Use the no ip redirects command on the interface.
SUMMARY STEPS
1. configure terminal
2. bfd slow-timer echo-interval
3. interface int-if
4. bfd echo
5. (Optional) show running-config bfd
6. (Optional) copy running-config startup-config
Step 4
show running-config bfd
Example:
switch(config-if)# show running-config
bfd
(Optional) Displays the BFD running configuration.
Step 5
copy running-config startup-config
Example:
switch(config-if)# copy running-config
startup-config
(Optional) Saves this configuration change.
Command Purpose