subject: Which To Use Mpls Cn2 [print this page] Which To Use Mpls Cn2 Which To Use Mpls Cn2
MPLS technology has been widely used in many backbone networks, MAN has a lot of implementation, following a brief application of a number of CN2 MPLS situation:
One business location Internet second plane (CN2) should be able to support voice, video, data and other business, the business provides and guarantees to sub-priority, first to ensure commercial customers, and the second is NGN (Softswitch) relay, the third grouping is the 3G domain, the fourth is Vnet.
CN2 on the open commercial customers first three MPLSVPN, and gradually open the second floor VPN services. Overall, CN2 positioned to carry a guaranteed SLA QoS China Telecom's own business and the key to profitable business, mainly to create brand image of China Telecom, to form profitable business model, enhance China Telecom's business competitiveness and profitability for the purpose of . CN2 bearing side business to ensure the controllability and manageability, full account of the business is already there, and give due consideration to future applications, including: 1, green class of business, including business class customers of the VPN special network operations, and The line for business customers access services; 2, China Telecom to provide its own quality assurance requirements are the focus of the brand new class of business, including the NGN (Softswitch) relay, 3G core network bearer network; 3, provided China Telecom video conferencing, video telephony, video type services, such as New Vision, taking into account the VIP broadband point to point communication needs between users, such as video telephony, VOIP, data transfer, etc.; 4, Vnet Internet value-added services , including that provided by China Telecom itself, access Vnet of ICP or access high-quality ICP IDC China Telecom to provide value-added types of Internet business.
Second, China Telecom, 3G, NGN bearer network services
China Telecom 3G network construction, and gradually introduce NGN Softswitch technology business has been imperative. The R4 version of the 3G standard developed in 2000 has been completed, related systems and equipment has already been developed, ongoing commercial trial. So here for the 3G business analysis is based on R4 and above versions. China Telecom launched 3G and NGN-related businesses, CN2 will serve as the 3G core network, NGN bearer network relay for 3G and NGN service platform provides a unified IP bearer. 3G core network GGSN, SGSN, media gateways, signaling servers and other devices to connect through CN2, transmit voice, data and signaling. Similarly, in the NGN network, soft switch, relay GW, server equipment directly connected to the CN2 on the IP network through a direct bearing NGN relay signaling, voice and data traffic.
3, CN2 routing design 3.1. Overview With Integrated ISIS (IntegraedISIS) as the IGP.
CN2 backbone routers (C3 and above) the management of addresses and Internet addresses of the route from the IGP load; other he is routing (including CN1, MAN, IDC, line users, 3G device address and address of the pool, NGN equipment Address etc.) by the BGP host.
CN2 using an independent, legitimate AS number (available in use 169 or separate applications). In the AS boundary through EBGP or static routing (as with EBGP) control the routing of the send, receive, aggregate and property change.
3.2.IGP 3.2.1.Area and Level
Within a planar routing, all the CN2 backbone routers (C3 and above; does not include an independent set of MPLSVPNPEs) placed Level2 layer; it is still divided into Area
