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Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 7 Configuring vPCs
Default Settings
• 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.
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
Table 7-2 Default vPC Parameters
Parameters Default
vPC system priority 32667
vPC peer-keepalive message Disabled
vPC peer-keepalive interval 1 second
vPC peer-keepalive timeout 5 seconds
vPC peer-keepalive UDP port 3200
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