About Custom VSAs

A vendor-specific attribute (VSA) is used to encapsulate data specific to a vendor device. A VSA consists of a vendor ID and the attribute value. VSAs are stored in a RADIUS dictionary that is part of the CMP database. The dictionary includes a text description of the VSA and type information, and includes standard VSAs. You can define VSAs and add them to the dictionary.

Custom VSAs are typically used in a RADIUS Change of Authorization (CoA) message. You can create policy conditions to evaluate the presence of VSAs in RADIUS messages, and to include custom VSAs in RADIUS response messages.

For information on how to assign values to VSAs, and then send them in a RADIUS CoA message, see Managing RADIUS CoA Templates.

Note: Custom VSAs is a function that is applicable to RADIUS CoA mode only.