What Does Diameter Mean?
Diameter is an authentication, authorization and accounting (AAA) protocol used by computer networks. It defines the minimum requirements that an AAA protocol must support and was built to surpass and replace the older RADIUS protocol that preceded it. It came about because of various developments made to address the limitations of the RADIUS gateway.
Techopedia Explains Diameter
Diameter is a base foundation protocol with routing capabilities, negotiation capabilities, error handling and transmission of diameter messages. It serves to authenticate, authorize and account for the activities of a user before being allowed into the network to use an ISP’s services.
