Today's networks present flourishing state, and the emergence of faster Ethernet switch, such as Gigabit Ethernet switch even 10gb switches, which provide a higher rate of exchange of information for us. No matter how fast they forward packets will still go through a complicated process. There is a method of data forwarding can be simplified, while maintaining a high forward speed. That's MPLS network.
A. What is MPLS network?
MPLS Multiprotocol Label Switching representatives, it is a fast packet switching and routing system for providing targeted, routing, forwarding and the ability to network traffic exchange. In most cases, the MPLS is considered to run at the 2.5 level, because it is possible to make the data packet rather than forwarding .MPLS Layer 3 packet marking technique is a second layer, the IP address can be mapped to a simple fixed length label, to achieve different packet forwarding and packet switching technology. MPLS can provide, including ××× (virtual private network), traffic engineering (TE) and Quality of Service (QoS) applications, MPLS is a priority packet marking technical data, but it's actually how it works ?
How two .MPLS network work?
In an MPLS network, packets over the network directed, marking it with a certain number of packets based on the specified tag label. We can be compared with data packets carrying case to transport goods between two locations, if at each site, transportation companies need to open the box to find out what it is and where it will, it will take a lot of time and energy. Now, if we put a label indicating where data packets from outside, regardless of transport companies see it know how to handle it without opening it.
The basic components of MPLS network is a Label Switch Router (the LSR), the ingress router having MPLS labeled packet (message packet) when entering the network (post office), so the router (mail workers) exactly know where the data, and again and again without having to open the package, the adapter MPLS domain router sends the packet to the egress LER along the label switched path according to (LSP) by a series of an LSR label. Finally, at the outlet of exit router resides is responsible for the release of the label from the packet and forwards it to the destination. In short, the relay packet switched router according to an additional label, an inlet and an outlet for the conversion between the router MPLS and IP technologies.
Three advantages .MPLS network
Some might say "MPLS is really a good thing, but why should I change it in a good existing network operation?." This section will describe the benefits of using MPLS network.
First, with regard to its cost, it is a cost-effective solution. Multi-Layer Switching (MPLS) is a very scalable, high-performance mechanism for a telecommunications network that allows the interconnection network grows, while adding a minimum of hardware, the MPLS network by using a communication cloud-based network, each node MPLS cloud to connect to the network provider, which allows you to add new remote connection, without the need to add hardware at the primary site.
Secondly, let us look at its performance. It provides an alternate network paths for improving uptime and reduce network congestion, it allows various types of traffic traversing the network to improve bandwidth utilization, it can allow multiple classes of service to different types of traffic (e.g., VOIP) to improve the end user experience.
Third, one of the most significant benefits of MPLS is that it applies to any network layer protocol that supports the Internet Protocol (IP), Ethernet, Asynchronous Transfer Mode (ATM) and frame relay transmission; any one of these protocols are It can be used to create the LSP.