Configuration Parameters That Must Be Identical - Cisco Nexus 3548 Configuration Manual

Configuring Virtual Port Channels
Allowed VLANs
Local suspended VLANs

Configuration Parameters That Must Be Identical

The configuration parameters in this section must be configured identically on both switches at either end of
the vPC peer link.
Note You must ensure that all interfaces in the vPC have the identical operational and configuration parameters
listed in this section.
Enter the show vpc consistency-parameters command to display the configured values on all interfaces in
the vPC. The displayed configurations are only those configurations that would limit the vPC peer link and
vPC from coming up.
The switch automatically checks for compatibility of these parameters on the vPC interfaces. The per-interface
parameters must be consistent per interface, and the global parameters must be consistent globally.
• Port-channel mode: on, off, or active
• Link speed per channel
• Duplex mode per channel
• Trunk mode per channel:
• Spanning Tree Protocol (STP) mode
• STP region configuration for Multiple Spanning Tree (MST)
• Enable or disable state per VLAN
• STP global settings:
• STP interface settings:
If any of these parameters are not enabled or defined on either switch, the vPC consistency check ignores
those parameters.
Note
To ensure that none of the vPC interfaces are in the suspend mode, enter the show vpc brief and show vpc
consistency-parameters commands and check the syslog messages.
• Native VLAN
• VLANs allowed on trunk
• Tagging of native VLAN traffic
• Bridge Assurance setting
• Port type setting—We recommend that you set all vPC interfaces as normal ports
• Loop Guard settings
• Port type setting
• Loop Guard
• Root Guard
Cisco Nexus 3548 Switch NX-OS Interfaces Configuration Guide, Release 9x
Configuration Parameters That Must Be Identical
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