Cisco N7K-C7010 Configuration Guide - Page 141

Chapter 5 Configuring Bidirectional Forwarding Detection Configuring BFD Send document comments to [email protected] 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 DETAILED STEPS Step 1 Command configure terminal Step 2 Example: switch# configure terminal switch(config)# bfd slow-timer echo-interval Example: switch(config)# bfd slow-timer 2000 Step 3 interface int-if Step 4 Example: switch(config)# interface ethernet 2/1 switch(config-if)# bfd echo Step 5 Example: switch(config-if)# bfd echo show running-config bfd Step 6 Example: switch(config-if)# show running-config bfd copy running-config startup-config Example: switch(config-if)# copy running-config startup-config Purpose Enters configuration mode. Configures the slow timer used in the echo function. This value determines how fast BFD starts up a new session and is used to slow down the asynchrounous sessions when the BFD echo function is enabled. This value overwrites the required minimum receive interval when the echo function is enabled. The range is from 1000 to 30000 milliseconds. The default is 2000. Enters interface configuration mode. Use the ? keyword to display the supported interfaces. Enables the echo function. The default is enabled. (Optional) Displays the BFD running configuration. (Optional) Saves this configuration change. Optimizing BFD on Subinterfaces You can optimize BFD on subinterfaces. BFD creates sessions for all configured subinterfaces. BFD sets the subinterface with the lowest configured VLAN ID as the master subinterface and that subinterface uses the BFD session parameters of the parent interface. The remaining subinterfaces use the slow timer. If the optimized subinterface session detects an error, BFD marks all subinterfaces on that physical interface as down. OL-23435-03 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 5-13