Diameter is an authentication, authorization, and accounting (AAA) protocol for computer networks. It evolved from the earlier RADIUS protocol. It belongs to the application layer protocols in the Internet protocol suite.

The Diameter Protocol provides authentication, authorization, and accounting (AAA) messaging services for network access and data mobility applications in 3G, IP Multimedia Systems (IMS), and LTE/4G networks.

2025年3月7日 · Diameter is a peer-to-peer (P2P) network and in that network, a peer can work either as a client or a server. Unlike the previous protocol versions, in diameter, a server can send a request to its peers. This protocol primarily focuses on enabling communication between different devices.

Here, we will focus on this protocol details and Radius vs Diameter. Diameter Protocol supports many protocols beside IP and it is a solution for new access requirements. With these characteristics of Diameter Protocol, it is mosty used in mobile service providers and …

Diameter is an IP-based application layer protocol that uses TCP or SCTP. Provides functionality for Authentication, Authorization, and Accounting, known as AAA. The Diameter is the successor of the radius protocol. RFC 6733 defines the base protocol and obsoletes previous RFC 3588.

2020年11月18日 · Diameter is a message based protocol, where AAA nodes exchange messages and receive Positive or Negative acknowledgment for each message exchanged between nodes . The name is a play on words, derived from the RADIUS protocol, which is the predecessor (a diameter is twice the radius).

Diameter Relays and redirect agents are, by definition, protocol transparent, and MUST transparently support the Diameter base protocol, which includes accounting, and all Diameter applications. Diameter proxies MUST support the base protocol, which includes accounting.

Diameter is a planned replacement of RADIUS. It is an AAA protocol for applications such as network access and IP mobility. Listed below are a few points that you need to know about Diameter:

Diameter is a next-generation industry-standard protocol used to exchange authentication, authorization, and accounting (AAA) information in Long-Term Evolution (LTE) and IP Multimedia Systems (IMS) networks.

Diameter is a Authentication Authorization and Accounting (AAA) protocol. It works on the Application Layer if we consider OSI Layered model. Diameter is a message based protocol, where AAA nodes exchange messages and receive Positive or Negative acknowledgment for each message exchanged between nodes.