Cisco N7K-C7010 Configuration Guide - Page 232

Default Settings Chapter 7 Configuring vPCs Send document comments to [email protected] • If you configure OSPF in a vPC environment, use the following timer commands in router configuration mode on the core switch to ensure fast OSPF convergence when a vPC peer link is shut down: switch (config-router)# timers throttle spf 1 50 50 switch (config-router)# timers lsa-arrival 10 See the Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 5.x, for further details about OSPF. • BFD for HSRP is not supported in a vPC environment. • The STP port cost is fixed to 200 in a vPC environment. • A single vPC domain between two VDCs on the same physical Cisco Nexus 7000 device is not supported. Default Settings Table 7-2 lists the default settings for vPC parameters. Table 7-2 Default vPC Parameters Parameters vPC system priority vPC peer-keepalive message vPC peer-keepalive interval vPC peer-keepalive timeout vPC peer-keepalive UDP port Default 32667 Disabled 1 second 5 seconds 3200 Note Configuring vPCs Note You must use these steps on both devices on either side of the vPC peer link. You configure both of the vPC peer devices with these procedures. This section describes how to configure vPCs using the command-line interface (CLI) and includes the following topics: • Enabling vPCs, page 7-31 • Disabling vPCs, page 7-32 • Creating a vPC Domain and Entering the vpc-domain Mode, page 7-33 • Configuring the vPC Keepalive Link and Messages, page 7-34 • Creating the vPC Peer Link, page 7-36 7-30 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x OL-23435-03