Configuration Hierarchy; Task Flow For Configuring Bfd; Enabling The Bfd Feature - Cisco 7206 - VXR Router 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

Configuration Hierarchy

You can configure BFD at the global level and at the interface or subinterface level (for physical
interfaces and port channels). The interface or sub-interface configuration overrides global
configuration. On supported interfaces, the subinterface-level configuration overrides the interface or
port channel configuration unless subinterface optimization is enabled. See the
Subinterfaces" section on page 5-13
Using BFD per-link mode and sub-interface optimization simultaneously on a Layer 3 port channel is
Note
not supported.
For physical ports that are members of a port channel, the member port inherits the master port channel
BFD configuration. The member port subinterfaces can override the master port channel BFD
configuration, unless subinterface optimization is enabled.

Task Flow for Configuring BFD

Follow these steps to configure BFD:
Enabling the BFD
Step 1
Configuring Global BFD Parameters
Step 2
Configuring BFD Support for Routing
Step 3

Enabling the BFD Feature

You must enable the BFD feature before you can configure BFD on an interface and protocol within a
device (VDC).
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1.
2.
3.
4.
OL-23435-03
Feature.
configure terminal
feature bfd
(Optional) show feature | include bfd
(Optional) copy running-config startup-config
for more information.
or Configuring BFD on an
Protocols.
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Configuring BFD
"Optimizing BFD on
Interface.
5-7