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Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 7 Configuring vPCs
Configuring vPCs
DETAILED STEPS
This example shows how to configure a pure vPC peer switch topology:
switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
switch(config)# vpc domain 5
switch(config-vpc-domain)# peer-switch
2010 Apr 28 14:44:44 switch %STP-2-VPC_PEERSWITCH_CONFIG_ENABLED: vPC peer-switch
configuration is enabled. Please make sure to configure spanning tree "bridge" priority as
per recommended guidelines to make vPC peer-switch operational.
switch(config-vpc-domain)# exit
switch(config)# spanning-tree vlan 1 priority 8192
Command Purpose
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Enters global configuration mode.
Step 2
vpc domain domain-id
Example:
switch(config)# vpc domain 5
switch(config-vpc-domain)#
Enters the vPC domain number that you want to
configure. The system enters the vpc-domain
configuration mode.
Step 3
peer-switch
Example:
switch(config-vpc-domain)# peer-switch
Enables the vPC switch pair to appear as a single
STP root in the Layer 2 topology.
Use the no form of the command to disable the peer
switch vPC topology.
Step 4
spanning-tree vlan vlan-range priority
value
Example:
switch(config)# spanning-tree vlan 1
priority 8192
Configures the bridge priority of the VLAN. Valid
values are multiples of 4096. The default value is
32768.
Step 5
exit
Example:
switch(config-vpc-domain)# exit
switch(config)#
Exits the vpc-domain configuration mode.
Step 6
show spanning-tree summary
Example:
switch# show spanning-tree summary
(Optional) Displays a summary of the spanning tree
port states including the vPC peer switch.
Step 7
copy running-config startup-config
Example:
switch# copy running-config startup-config
(Optional) Copies the running configuration to the
startup configuration.
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