Cisco N7K-C7010 Configuration Guide - Page 139
Configuring BFD on a Port Channel
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Chapter 5 Configuring Bidirectional Forwarding Detection Configuring BFD Send document comments to [email protected] 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 "Optimizing BFD on Subinterfaces" section on page 5-13 for more information. 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 "Enabling the BFD Feature" section on page 5-7. SUMMARY STEPS 1. configure terminal 2. interface port-channel number 3. bfd per-link 4. (Optional) bfd interval mintx min_rx msec multiplier value 5. (Optional) bfd authentication keyed-sha1 keyid id key ascii_key 6. (Optional) show running-config bfd 7. (Optional) copy running-config startup-config DETAILED STEPS Step 1 Command configure terminal Purpose Enters configuration mode. Step 2 Step 3 Example: switch# configure terminal switch(config)# interface port-channel number Example: switch(config)# interface port-channel 2 switch(config-if)# Enters port channel configuration mode. Use the ? keyword to display the supported number range. bfd per-link Example: switch(config-if)# bfd per-link Configures the BFD sessions for each link in the port channel. OL-23435-03 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 5-11