Compatibility Parameters For Vpc Interfaces - Cisco 7604-RSP720C-R Configuration Manual

Chapter 7 Configuring vPCs
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
Figure 7-10
P0100
In the figure, each FEX is single-homed (straight-through FEX topology) with a Cisco Nexus 7000
Series Switch. The host interfaces on this FEX are configured as port channels and those port channels
are configured as vPCs. Eth100/1/1 and Eth102/1/5 are configured as members of PO200, and PO200 is
configured for vPC 200.
In both topologies, port channels P020 and P0200 must be configured identically on the peer switches
and configuration synchronization is used to synchronize the configurations of the vPC switches.
See the Configuring the Cisco Nexus 2000 Series Fabric Extender for more information on configuring
FEX ports.

Compatibility Parameters for vPC Interfaces

Many configuration and operational parameters must be identical on all interfaces in the vPC. We
recommend that you configure the Layer 2 port channels that you use for the vPC peer link in trunk
mode.
After you enable the vPC feature and configure the peer link on both vPC peer devices, CFS messages
provide a copy of the configuration on the local vPC peer device configuration to the remote vPC peer
device. The system then determines whether any of the crucial configuration parameters differ on the
two devices. (See the
Enter the show vpc consistency-parameters command to display the configured values on all interfaces
Note
in the vPC. The displayed configurations are only those configurations that would limit the vPC peer
link and vPC from coming up.
The compatibility check process for vPCs differs from the compatibility check for regular port channels.
See
OL-23435-03
FEX Straight-Through Topology (Host vPC)
mgmt0
Eth1/1-2
FEX 100
Eth100/1/1
P0200
vPC200
"CFSoE" section on page 7-26
Chapter 6, "Configuring Port Channels,"
mgmt0
Eth1/1-2
P0100
FEX 102
Eth102/1/5
for more information on CFS.)
for information on regular port channels.
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Information About vPCs
7-15