MPLS multi-protocol marking technology enhances network transmission

Source: Internet
Author: User

With the continuous development of global network facilities, a large part of the network field has recently switched to the use of Multi-Protocol Label Switching (MPLS), which simplifies the virtual private network (VPN) link, implementing service convergence and traffic engineering offers attractive opportunities while minimizing complexity and overhead related to earlier methods.

The role of MPLS

In early 1990s, most of the Internet was built using ATM switches that provide Layer 2 connections between low-speed routers. However, it turns out that there are many problems in complexity and scalability when we map IP services to ATM networks. These problems require defining protocols to enable the ATM switch to work on the third layer, so as to develop a faster and more economical router. MPLS came into being.

The initial driving force for the development of MPLS protocol is completely focused on improving performance. Developers expect that by clearly separating the forwarding control function (included in the tag) from the net load data, the second layer switching speed can be used in the third layer to improve the performance. However, the rise of the next generation of ASIC-based ultra-high-speed L2/L3 switches/router systems, such as the Extreme Networks Black Diamond Series, has surpassed the speed advantage of the traditional L2 switching system, eliminate the focus of MPLS to solve the speed problem. But as a technology to implement new routing functions, MPLS protocol is still very important. MPLS enables or enhances VPN, traffic engineering, fast detour routing, QoS, and other functions. In addition, it can add new features without changing the tag switch forwarding mode (that is, there is no need to perform hardware upgrades ). From a certain perspective, MPLS can be regarded as a new improved ATM, because it is usually positioned as a unified technology that can support a wide range of services through a network facility.

Through MPLS, you can also implement enhanced traffic engineering, and use the MPLS Traffic Engineering function to achieve load balancing, these relatively concise traffic engineering applications provide the most attractive opportunity to leverage MPLS, improve overall network management for service providers and enterprises, and make better use of available bandwidth.

The Smart deployment of MPLS technology can significantly enhance the performance of the Group network. It can provide a relatively simple mechanism to instill more deterministic traffic control and flexibly create dedicated virtual circuits. In fact, MPLS is helping lay the foundation for the next generation network by combining the advantages of flexible and ubiquitous grouping IP networks with traditional telecom circuit networks.

MPLS comes from Wan

The main driving factor of MPLS is the complexity of the wide-area backbone network. till recently, the main focus of MPLS evolution has been to implement tag switching as a wide area network technology. However, as MPLS switches to the man environment, the overall situation is very different from that of Wan, which requires different priorities to maximize the advantages provided by MPLS.

Although MPLS helps to overcome the complexity of the WAN, it is actually very complicated to try a completely mature MPLS implementation solution recognized by everyone in the man, because it will inevitably compare with the performance and flexibility advantages of the L2/L3 switching router system of the wire speed. To turn MPLS to The Man environment efficiently, we must focus on the use of the label switching technology and improvement of the existing high-speed switching router system to add necessary functions, without adding unnecessary complex layers.

Two main applications of man are Transparent LAN Service (TLS) and Internet connection. As Ethernet becomes a new technology of man, simple VLAN mechanisms used in Lan are being expanded to support TLS and VPN requirements of man. Extreme Networks has adopted inherent Ethernet mechanisms, such as 802.1Q marking and 802.1Q tunneling, and the ability to process Layer 2 TLS services and Layer 3 routing Internet services on the same physical network, various man TLS and point-to-point VPN and Internet connection services are deployed. If we look at Ethernet in depth, we will find that most of the solutions that MPLS tries to implement already exist in Layer 2/Layer 3 Ethernet environments.

Extreme Networks MPLS Solution

As an active participant in the MPLS forum and IETF and the earliest developer of the advanced multi-layer IP Switch/router solution, Extreme Networks is currently at the forefront of implementing cutting-edge and feasible MPLS solutions. Basic components of the Extreme Networks MPLS plan include: 1. creating highly scalable and economical MPLS hardware structures to support MPLS

Extreme Network provides an MPLS solution. First, it adopts a flexible modular hardware solution that allows customers to smoothly switch to the deployment of robust MPLS functions, at the same time, use the existing equipment investment and the existing network structure.

Provides a rich and flexible programming environment for managing MPLS functions

The Extreme vswitch not only utilizes the flexibility of the modular MPLS hardware structure, but also has a wide range of software environments that can efficiently provide LER and LSR functions on all ports. You can enable or disable the MPLS function on each VLAN. In addition, the Extreme verified virtual man function can be used to efficiently assemble multiple MPLS-based L2 VLANs.

As a leading enterprise that develops advanced IP Switch/router solutions so that service providers and enterprises can optimize the man and LAN environments, extreme Networks has been focusing on implementing MPLS products in the early stage, providing flexible and robust solutions for implementing VPN and developing basic traffic engineering functions. Scalability, configuration capability, and economics have always been the primary goal of MPLS products in the early stage provided by the Black Diamond structure.

At the same time, these Extreme Networks initial MPLS solutions are specially designed. As market requirements and MPLS standard statuses continue to develop, it provides a solid foundation and scalable structure for the scalability and enhancement of MPLS functions. By directly targeting applications that can achieve maximum ROI immediately, creating a modular and incrementally deployed MPLS solution, Extreme continues to work on providing actual results. In addition, Extreme Networks is also helping to define and expand opportunities to achieve more MPLS advantages in the future by continuing to play a key role in the MPLS Forum, IETF and other standard organizations.

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