Priority Choice

There are two priority choice modes that determine how domain defense is configured globally on the switch and three priority choice modes on a port basis. The priority choice mode can be set to:

• Admin – Domain defense is administratively configured. When defense choice is set to admin, defense mode defaults to interior on all ports. Admin can be configured both globally and on a port basis.
• Auto – Domain defense is dynamically configured using LLDP. When defense choice is set to auto, defense mode defaults to edge on all ports. Auto can be configured both globally and on a port basis.
• Default – Domain defense is based upon the creation setting (enable or disable) used when the CNPV is created. If creation enable is set, domain defense defaults to auto. If creation disable is set, domain defense defaults to admin.

Choice, Defense Mode, and Alternate Priority Cross-Reference cross-references port-priority choice and priority choice settings with the default defense mode and alternate priority settings.

For example, if the global priority choice is set to auto and the port-priority choice is set to default (row 3 of Choice, Defense Mode, and Alternate Priority Cross-Reference), both the defense mode and alternate priority are auto chosen. In this case, the defense mode would default to edge and the alternate priority would default to the next lowest non-CNPV value, or if no lower one exists, the next highest non-CNPV value.

Priority choice on a global basis is configured using the set dcb cn priority choice command.

Priority choice on a port basis is configured using the set dcb cn port-priority choice command.