IP VPN: new hot telecommunications business
With more and more multinational companies settled in China, doing business as well as large domestic companies to expand overseas, has been on the urgent needs of IPVPN services rendered in the telecommunications
Operation Business before. At the same time, the traditional line class of business, due to the flexibility of its network constraints and the impact of high tariffs in the market
Competition The leading role of the great challenges by IPVPN, also contributed to telecom operators increased business investment in the IPVPN. Compared with traditional telecommunications services (eg voice) slowdown, IPVPN carriers has become one of the hot competition, especially in the traditional telecom operators have to transition today, IPVPN will be its in-depth customer networks, providing comprehensive Information Services tool.
IP VPN market situation Present, most of China's telecom operators have started to provide IPVPN services, such as China Telecom,
China Netcom China CTT And so on. Meanwhile, as China joins the WTO after the opening part of the telecommunications market, IPVPN also been sought after by overseas operators have been a number of foreign operators with telecom operators in China joint venture, lease VPN Internet service and other methods International IPVPN its customers in China, "landing" to create conditions.
IPVPN business is gaining momentum, the overall slowdown in the telecommunications business today, is a hot market rivalry. Therefore, it is necessary IPVPN specific forms of implementation and future development trends, conduct some research and discussion.
IP VPN's technology IPVPN the concrete realization of many forms the basis of classification also are different. Typically, the mode of initiation by VPN, VPN can be implemented independently by the customer or provided by the operator, will be divided into client-based and network-based two categories.
Client-based VPN services IPVPN is the starting point and end point are in the client side, its internal structure, implementation and management of fully completed by the customer, carriers do not have any work to support VPN, VPN traffic does not participate in the process.
Network-based IPVPN is the VPN service by the operator responsible for the start and end, that end in the internal structure, implementation and management of fully completed by the operator, customers can simply access VPN, their own do not have a special bearer network for VPN maintenance and management.
Currently, IP VPN is the main implementations MPLSVPN a typical network-based IPVPN. Carriers build MPLS backbone network, formed by the P and PE devices using MPLSVPN customers, its only through the various sites dedicated or dial-up, the CE device access MPLS network, any network in the VPN can be established . The network topology breaks through the traditional line of point constraints, the same time, there is no long line of cases, the rates also have greatly reduced. In addition, the use of MPLS multi-layer
Label Technology and IPQoS mechanism can also provide multiple business levels MPLSVPN provide different indicators of QoS protection in order to distinguish different customer applications.
Currently, the most widely used MPLSVPN form is based on the RFC2547bis of BGP / MPLSVPN (also called L3MPLSVPN), this MPLSVPN BGP protocol using the extended members of the reach of carrying VPN information, standards mature, scalable Well, to achieve the other pure IP-VPN function can not be achieved (such as overlapping addresses, VPN attributes overlap, etc.). However, L3MPLSVPN route to the customer notice to operators, which are accustomed to traditional dedicated network of customers is a challenge at the same time, giving operators the maintenance and management has also brought a lot of work.
And point the way on Martini L2VPN (also known as VPWS) and multipoint VPLS L2MPLSVPN as the mainstream form, will be based on IPVPN in L3MPLSVPN complement and development. Especially on the second floor of the original bearer of the good line, the traditional migration of customers and network adjustment of great convenience. Among them, based on Martini's L2MPLSVPN, as to achieve relatively simple, relatively mature standard, factory support capacity, will be the next time one of the main forms of L2VPN; and a more flexible form of VPLS network technology, because of its draft standards maturity is not high, the way through the LDP or BGP VPLS way that needs further study, it will be the telecom operators in VPN technology, the future focus.
In addition, in the past based on the client's IPVPN the IPSecVPN, because usually the use of Inter? Net bearing on the requirements of customers is relatively low, there are good security protection, implementation technology has become the new darling of IPVPN only concrete way to achieve the emergence of new changes. From a traditional IPSec gateway device on the customer network side, by its self from the maintenance building into a unified by the operator IPSec network platform, customers who have the soft end (client software) can be. This change, reflected as the telecommunications services market segmentation and specialization trend, VPN implementation of Web-based forms to tilt, even if attributable to the traditional client-based VPN technology can also be achieved through specific programs become more conducive to promote the use of web-based implementation.
As carriers of one form of traditional VPN VPDN, due to its technical stability and network device support is high, though no new breakthrough, but in the local VPN network, still very much good prospects, but its gradual decline in the status.
Development Trend of IP VPN After several years of development, IPVPN customers has been gradually recognized and accepted as new data services market, one of the hotspots. However, with the customer network applications and constantly enrich and change, IPVPN order to better meet the needs of our customers new networking, their work shows the following trends:
? VPN to achieve diversification. VPN networking form of a single technology can break through the restrictions, the different VPN technologies together to achieve more feature-rich VPN network. For example, while achieving a fixed site for the Internet and
Mobile
Office access, customers can be used between the fixed site MPLSVPN form, and in the mobile terminal to install IPSec client software, via Internet access MPLSVPN networks that use MPLS and IPSec Technology Group
I am China Computer Parts writer, reports some information about hutch antique , toaster oven cabinet.
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Great article! Thanks.