Configuration Parameters That Should Be Identical - Cisco nexus 5000 series Configuration Manual

Compatibility Parameters for vPC Peer Links
• Fabric Extender FEX number configured on an EtherChannel fabric interface; for the Fabric Extender
vPC toplogy.
If any of these parameters are not enabled or defined on either switch, the vPC consistency check ignores
those parameters.
To ensure that none of the vPC interfaces are in the suspend mode, enter the show vpc brief and show
Note
vpc consistency-parameters commands and check the syslog messages.

Configuration Parameters That Should Be Identical

When any of the following parameters are not configured identically on both vPC peer switches, a
misconfiguration might cause undesirable behavior in the traffic flow:
• MAC aging timers
• Static MAC entries
• VLAN interface—Each switch on the end of the vPC peer link must have a VLAN interface configured
for the same VLAN on both ends and they must be in the same administrative and operational mode.
Those VLANs configured on only one switch of the peer link do not pass traffic using the vPC or peer
link. You must create all VLANs on both the primary and secondary vPC switches, or the VLAN will
be suspended.
• Private VLAN configuration
• All ACL configurations and parameters
• Quality of service (QoS) configuration and parameters—Local parameters; global parameters must be
identical
• STP interface settings:
To ensure that all the configuration parameters are compatible, we recommend that you display the
configurations for each vPC peer switch once you configure the vPC.
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.1(3)N1(1)
108
◦ BPDU Filter
◦ BPDU Guard
◦ Cost
◦ Link type
◦ Priority
◦ VLANs (Rapid PVST+)
Configuring Virtual Port Channels
OL-25842-01