NETWORK INFRASTRUCTURE

Network Infrastructure



Network Infrastructure

1.

a) Peer Name Resolution Protocol

Peer Name Resolution Protocol (PNRP) allows devices on a network to discover one another. It is a Microsoft-developed and patented technology that lets host computers publishes the names and IP addresses of peer computers. PNRP 2.0 comes bundled with Vista, but it was available as an add-on for Windows XP (Kawaguchi, 2009: 23-24). In peer-to-peer environments, peers rely on name resolution systems to resolve each other's network locations (addresses, protocols, and ports) from names or other types of identifiers. PNRP provides a secure, scalable, and dynamic name registration and name resolution protocol first developed for Windows XP, and then upgraded in Windows Vista and Windows Server 2008. PNRP works very differently from traditional name resolution systems, opening up new possibilities for applications.

b) Technologies support Network Infrastructure Management

As the marketplace continues to expand and increasingly rely on Internet technology, network infrastructure has become an increasingly critical component of business. Today's business and technological advances require a responsive network infrastructure designed to control the customer's costs and reduce risks to the business while enabling them to seize new business opportunities (Summerhill, 2009: 20-23). The technologies that support the Network Infrastructure Management may include resources for e.g. servers supporting networking infrastructure management, routers, printers, switches, firewalls, clients, wireless access, cabled access, remote workstations, 3G based remote access.

c) Security resources for Network Infrastructure Management

Security resources for Network Infrastructure Management includes rights management, resource availability, user management, access times, group allocation, timed access, encryption, authentication, Virtual Private Network(VPN), tunnelling, remote access, RADIUS (Remote Access Dial In Support), TACACS (Terminal Access Controller Access-Control System), IPSec, certificate authorities, PKI (Public Key Infrastructure).

2.

a) Designing Network Infrastructure

Now that the Internet is a part of our everyday lives, new opportunities to provide next-generation network services beyond “best-effort” services have emerged in both telecom carrier and university networks. Some telecom carrier networks focus on providing IP-based QoS services based on the Next Generation Network (NGN) architecture (Takeda, 2010: 9-12). Some universities backbone networks focus on providing layer-1 circuit services as well as packet services by using hybrid network architectures composed of IP routers and next-generation SDH/SONET devices(Campanella, 2010: 45-61). The UK universities backbone network has developed into both an Internet backbone for more than 700 universities and research institutions and a super-high-speed research network for cutting-edge research in such fields as high-energy physics, nuclear fusion, space science, and grid computing. In addition, it has been called upon to provide more advanced network services for the research and education communities. To meet the community's requirements, we constructed a new university infrastructure, called SINET3, and started full-scale operations in June 2007(Summerhill, 2009: 20-23)

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Since then, the network's services have been expanded to include multilayer services, such as the IPv4/IPv6 dual stack with BGP4 full routes, Ethernet, and layer-1 (or dedicated line) services, multiple VPN services, such as L3VPN, L2VPN, virtual private LAN service (VPLS), and L1VPN, multiple QoS services for both packet-based and circuit-based services, and even brand-new layer-1 bandwidth-on-demand (BoD) services (Knightson, 2009: ...