The framework for MPLS in transport networks (RFC 5921) provides reference models for the MPLS Transport Profile (MPLS-TP) Transport Service Interfaces, which are a User-to-Network Interface (UNI), and a Network-to-Network Interface (NNI). This document updates those reference models to show detailed reference points for these interfaces, along with further clarification of the functional ...

In telecommunications, a network-to-network interface (NNI) is an interface that specifies signaling and management functions between two networks.An NNI circuit can be used for interconnection of signalling (e.g., SS7), Internet Protocol (IP) (e.g., MPLS) or ATM networks. [1]In networks based on MPLS or GMPLS, NNI is used for the interconnection of core provider routers (class 4 or higher).

1.PTN的由来 PTN：Packet Transport Network（分组传送网），PTN是由MPLS发展而来的，由于MPLS的核心还是SDH，只是在SDH的基础上改进而来，即MPLS= SDH + 以太网（二层交换）+ATM（传信令），也就是在SDH的用户侧增加了以太网接口或者ATM接口，实现IP化接口，即 …

2024年2月27日 · A network-to-network interface (NNI) is a connection between different networks. We explain NNIs, how they work, and how they can help you expand your business connectivity quickly and efficiently. ... For instance, MPLS-based networks use protocols like Border Gateway Protocol (BGP) and Autonomous System Numbers (ASNs) to route traffic.

RFC 6215 MPLS-TP UNI and NNI April 2011 3. MPLS-TP Network-to-Network Interface The MPLS-TP Network-to-Network Interface (NNI) is illustrated in Figure 2. This figure obsoletes Figure 5 of . The NNI for a particular Transport Service Instance may involve signaling between the two PEs. If signaling is used, it may traverse the same data- link ...

2024年12月9日 · mpls nni：在多协议标签交换（mpls）网络中，nni接口用于不同mpls域之间的连接，通过标签交换和路由技术高效地转发数据。 sdh/sonet nni：在同步数字体系（sdh）或同步光网络（sonet）中，nni接口用于不同传输节点之间的互联，提供高速的光纤链路。 4.

2022年11月5日 · Frame Relay over MPLS and DTE DCE and NNI Connections. You can configure an interface as a DTE device or a DCE switch, or as a switch connected to a switch with network-to-network interface (NNI) connections. Use the following command in interface configuration mode: frame-relay intf-type [dce ...

网络到网络接口（Network-to-Network Interface，简称：NNI）是一个具体指明两个网络之间的信令（signaling）和管理功能的接口。一个 NNI 电路可以被用于信令（例如SS7）、IP（例如：MPLS），或ATM网络。

2020年1月23日 · PTN采用T-MPLS协议，简化MPLS并增强OAM功能，提供高效IP业务承载和电信级保护。 ... (Network-to-Network Interface），在UNI接口接收到用户的Packet时，Push上Tunnel和PW label两层标签，从NNI接口出去；在经过中间节点时，在输入NNI接口和输出接口之间，完成隧道Tunnel和伪线PW ...

MPLS NNI – Layer 3 Interconnect; EXPAND YOUR NETWORK REACH INSTANTLY. Expanding your network to reach your customers’ locations can be expensive and time consuming. Creating a patchwork of type 2 circuits leads to an administrative headache for your organization. With a single Layer 3 interconnection with Nitel at any of our 7 core POPs ...