Application of MPLS Multi-Protocol Label Switching in Communication Networks

The gradual integration of modern communication and network development also means that their technologies are becoming more and more complex. To enable multi-party protocol coordination, we constantly develop new technologies to complete complex work. With the use of MPLS Multi-Protocol Label exchange technology, we have seen many application prospects in this regard.

Application of MPLS Multi-Protocol Label Switching Technology

MPLS-TE Technology

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. Its main goal is to calculate a path source route between two nodes). This path does not violate its constraints, such as bandwidth/management requirements), and is optimal from some quantitative indicators.

MPLS Multi-Protocol Label Switching Technology Applied to access networks

MPLS virtual circuits support multiple "virtual" topologies and can design networks according to user requirements. Customer Services can be point-to-point instead of transparent lease 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.

Trainet Technology

Trainet is an extension solution of MPLS because 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.

Second, multiple <tag, hop count> pairs are used to connect different TL pairs to form a multi-TL route, just as subway passengers need to change to different trains multiple times before arriving at their destination. The Application of Trainet technology must meet two conditions: first, because the <tag, hop count> pair is 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.

MPLS-VPN Technology

MPLS-VPN can use the powerful transmission capability of Public Backbone Network, reduce the cost of enterprise internal network/Internet construction, 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.

Unlike the traditional VPN, the VPN based on MPLS Multi-Protocol Label exchange technology 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.

As one of the key technologies of communication networks, MPLS has unparalleled advantages over other technologies in traffic engineering, QoS Assurance, VPN, IP telecommunication network, and other business provision, 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, flexible, and available direction.