Application of MPLS in Huawei Routers

MPLS-TE is the traffic engineering on the MPLS network, refers to the process of selecting the path for the business flow, in order to balance the business flow load between different links, routers and switches in the network. The main goal is to calculate a path between two nodes. This path does not violate its constraints and is optimal from some quantitative indicators.

1. MPLS virtual circuits support multiple virtual topologies and can design networks according to user requirements. Customer Services can be point-to-point (which can replace transparent leased lines), point-to-point or multi-point to multi-point, and are transparent to the topology, protocol, and address structure of the user's network. Operators can flexibly use SONET, WDM, or even Optical Ethernet as transmission layers, and create an MPLS layer on the upper layers of these networks to achieve QoS-guaranteed statistical multiplexing, A standard service layer is built on the MPLS layer to meet the SLA of each business flow.

2. Trainet is an extension solution of MPLS, and its operating mechanism is similar to that of metro networks in large urban areas. The improvement of the Multi-Protocol Label Switching Technology Based on Trainet is mainly based on two points. First, the <label, hop count> pair is introduced to replace the labels used in the traditional MPLS network. The hop count indicates the number of LSR packets that need to pass through on the LSP specified by the label.

3. Use multiple tag pairs to form a multi-TL route connecting different TL routes, just as subway passengers need to transfer to different trains multiple times before arriving at their destination. The Application of Trainet technology must meet two conditions: first, because tag pairs are introduced, each LSR must have the ability to determine whether the hop value reaches the packet is 0 and to reduce the hop value by 1. Therefore, this technology must be supported by the hardware of LSR. Secondly, in the multi-TL routing technology, the MPLS stack mechanism must be used. LSR should have the function of pushing in and popping up labels.

4. MPLS-VPN can use the powerful transmission capability of Public Backbone Network to reduce the construction cost of enterprise internal network/Internet, and greatly improve the flexibility of user network operation and management, at the same time, it can meet users' needs for information transmission security, real-time performance, broadband and convenience.

5. Unlike the Traditional VPN, the MPLS Multi-Protocol Label Switching Technology-based VPN connects different branches of the private network in the region through LSP to form a unified network. It supports IP address reuse between different branches and intercommunication between different VPNs. MPLS-VPN technology is suitable for enterprises with the following obvious characteristics: efficient operation, frequent business activities, large data communication, high dependence on the network, there are many branches, such as network companies, IT companies, financial industries, trade industries, news organizations, etc.

6. As one of the key technologies of the communication network, compared with other technologies, MPLS has unparalleled advantages in traffic engineering, QoS Assurance, VPN, IP telecommunication network, and other services, gradually become an efficient IP backbone network technology platform. By enhancing MPLS's OAM capabilities and providing network management and business management software based on MPLS management capabilities, the application process of MPLS Multi-Protocol Label Switching technology will be accelerated, enables an MPLS-capable IP network to be manageable and operational.

Trainet, MPLS-TE, MPLS-VPN and other technologies improve network performance while improving scalability. These new technologies will undoubtedly promote the development of MPLS networks in a more comprehensive, more flexible, and more available direction, which makes the routers perform well in network connection and have mature VRP platform features, in terms of software services, it also boasts high network security performance.