Cisco N7K-C7010 Configuration Guide - Page 135
Configuration Hierarchy, Task Flow for Configuring BFD, Enabling the BFD Feature
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Chapter 5 Configuring Bidirectional Forwarding Detection Configuring BFD Send document comments to [email protected] Configuration Hierarchy Note You can configure BFD at the global level, VRF level, at the interface or port channel level, or at the subinterface level (for physical interfaces and port channels). The VRF configuration overrides global configuration. The interface or port channel configuration overrides VRF or global configuration. On supported interfaces, the subinterface-level configuration overrides the interface or port channel configuration unless subinterface optimization is enabled. See the "Optimizing BFD on Subinterfaces" section on page 5-13 for more information. Note Using BFD per-link mode and sub-interface optimization simultaneously on a Layer 3 port channel is 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: Step 1 Step 2 Step 3 Enabling the BFD Feature. Configuring Global BFD Parameters or Configuring BFD on an Interface. Configuring BFD Support for Routing Protocols. 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. configure terminal 2. feature bfd 3. (Optional) show feature | include bfd 4. (Optional) copy running-config startup-config OL-23435-03 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 5-7