Configuring Bfd On A Port Channel - Cisco 7604-RSP720C-R Configuration Manual

Chapter 5 Configuring Bidirectional Forwarding Detection
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m

Configuring BFD on a Port Channel

You can configure the BFD session parameters for all BFD sessions on a port channel. If per-link mode
is used for Layer 3 port channels, BFD creates a session for each link in the port channel and provides
an aggregate result to client protocols. For example, if the BFD session for one link on a port channel is
up, BFD informs client protocols, such as OSPF, that the port channel is up. The BFD session parameters
are negotiated between the BFD peers in a three-way handshake.
This configuration overrides the global session parameters for the configured port channel. The member
ports of the port channel inherit the port channel BFD session parameters, unless you configure
subinterface-level BFD parameters on a member port. In that case, the member port subinterface uses
the subinterface BFD configuration if subinterface optimization is not enabled. See the
BFD on Subinterfaces" section on page 5-13
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
Ensure that you enable LACP on the port channel before you enable BFD.
Enable the BFD feature. See the
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
DETAILED STEPS
Command
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Step 2
interface port-channel number
Example:
switch(config)# interface port-channel 2
switch(config-if)#
Step 3
bfd per-link
Example:
switch(config-if)# bfd per-link
OL-23435-03
configure terminal
interface port-channel number
bfd per-link
(Optional) bfd interval mintx min_rx msec multiplier value
(Optional) bfd authentication keyed-sha1 keyid id key ascii_key
(Optional) show running-config bfd
(Optional) copy running-config startup-config
for more information.
"Enabling the BFD Feature" section on page
Purpose
Enters configuration mode.
Enters port channel configuration mode. Use the ?
keyword to display the supported number range.
Configures the BFD sessions for each link in the port
channel.
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Configuring BFD
"Optimizing
5-7.
5-11