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Networking application I: Integrated networking solution of large and medium sized enterprises:
Figure 2: Integrated networking solution of large and medium sized enterprises
Medium and small sized enterprises may employ full series MSR 20, 30 and 50 routers to carry out the comprehensive service networking. MSR 50 series routers serve as enterprise center equipment and branches use MSR 20/30 series routers as access equipment and provide comprehensive services such as data, video, voice and fax. For large-sized enterprises, they can adopt high-end and core routers and the subsidiary interfaces can use MSR 30/50 as edge and convergence layer access equipment.
√ The headquarter employs H3C MSR 50 series routers, connects various branch networks via Ethernet, Digital Data Network (DDN), frame relay, X.25 or Synchronous Digital Hierarchy (SDH) network, and constructs the enterprise backbone network. Branches use H3C MSR 20/30 series routers to connect remote users via Ethernet and PSTN/ISDN, and provide access services to home office and mobile office users.
√ MSR series routers provide such mainstream voice communication protocols such as SIP and H.323 to users, realize emergency call/power failure call/dial-up policy/fax/E-PHONE and other various voice services and include abundant voice interface types covering FXS/FXO/E1V1/T1V1/E&M. The series routers adopt an expandable architecture and DSP resource whole-system for unified allocation, improve the utilization of DSP resource greatly, enhance the access density and realize the TDM switching of local users. Consequently, the voice quality can be guaranteed.
√ MSR series routers realize the convergence of routing and switching functions. Thus, users can use all features of routers and switches seamlessly.
Networking application II: MPLS VPN typical networking solution realized by MSR series routers
Figure 3: MPLS VPN Typical Networking Solution Realized by H3C MSR 20/30/50 Series Routers
MPLS is the latest development of the integrated routing/switching solution. It integrates the flexibility of IP routing technology with the simplicity and quickness of L2 switching and shows the outstanding advantage in constructing VPN. MPLS network can realize easily IP-based technology VPN services and satisfy the VPN expandability and management requirements. Security measures in MPLS VPN can be taken to ensure that different VPNs cannot visit each other. MPLS network has a strong QoS mechanism that can provide service quality assurance to bandwidth, transmission quality and delay of VPN users.
√ The core uses high end and core router as P equipment. The convergence layer adopts MSR 50 series routers as PE equipment, accesses various service networks of branches. PE equipment divides various services into different VPN networks and ensures the security and reliability of services.
√ Branches adopt MSR 20/30 equipment to connect the MSR 50 series equipment of the headquarters. Branches separate different services by using physical networks. In the case of multiple services in a physical network, VRF technology of MSR50 equipment can be used to realize the logical separation of various service networks.
√ For MPLS VPN service, different modes are available to establish tunnels. Using MPLS TE tunnels to bear VPN service shows lots of advantages: give the sound security to VPN service and provide the reliable QoS assurance. In addition, operators can customize MPLS TE tunnels with different features in accordance with different service requirements of VPN users to meet the user requirements as much as possible.
√ Provide MPLS VPN service of local networks and even cross-AS domain to users.
√ All Sites in a VPN, which belong to an enterprise, are called Intranet. Sites in a VPN, which belong to different enterprises, are called Extranet. MSR series routers provide MPLS VPN access of Intranet and Extranet and give Internet egresses to users.
√ As Provider Edge (PE) router, MSR 50 router can be connected directly with Customer Edge router of a user, and can complete all related processing of VPN and run the switching routing information among PEs. A PE can be connected with multiple CEs.
√ MPLS VPN can realize the high forwarding speed and large-sized VPN network.
Networking application III: IPv6 Networking Application
MSR Series Routers support IPv6 and are compatible with IPv4 network, which is one of the highlighted features. By adopting the dual-stack technology, MSR Series Routers effectively ensure co-existence of the pure IPv4 devices and the pure IPv6 devices in the same network. The following is one of the networking diagrams for IPv6 application.
Figure 4 IPv6 Networking Application
The headquarters network uses MSR 50 Series Routers which adopt the IPv6/IPv4 dual-stack technology while the branches use the MSR 20/30 Series Routers. Networking can be conducted with the IPv4 technology alone or with the IPv6/IPv4 dual-stack technology. For network communications from IPv6 to IPv4, the tunneling technology can also be used, thus implementing seamless communications between the IPv6 and IPv4 networks.
Networking application IV: Security service networking application
MSR series routers inherit all security features of the previous software features of AR 18/28/46 and support more newly developed security features of Comware V5 features.
Enterprises can use MSR 50 series routers as the enterprise core equipment. Branches use MSR 20/30 series routers as access equipment, combine with the high service performance advantage of MSR30/50 routers to provide the high-quality and multi-service comprehensive security network.
The following is a typical security networking application of MSR 50/MSR 20 routers.
Figure 5 Networking diagram for security services
√ In the enterprise headquarter; MSR50 routers are employed as the enterprise application security service gateway and external firewall to ensure the intranet security, together with the high performance security service. Meanwhile, switching modules are adopted, using the VLAN isolation and 8021.X function to implement the security access certification on the intranet users.
√ In the enterprise branches, MSR30 routers are adopted as VPN and IPSec access link. Meanwhile, MSR30 routers are used as VPN access gateway and provide VPN access to SOHO and mobile employees.
