23343254325432

C H A P TER 12 excogitation Switched local area interlocking Internetworks This chapter describes the following three technologies that network spiriters can use to design switched local area network internetworks: local area network switching Virtual LANs (VLANs) ambience switching ontogeny from Shared to Switched Networks In the past, network designers had lone(prenominal) a express number of hardware options when purchasing a technology for their campus networks. Hubs were for wire military presss and routers were for the data center or of import telecommunications operations. The increasing causation of backdrop processors and the requirements of client-server and multimedia applications, however, have compulsive the need for great bandwidth in traditional shared-media environments. These requirements are move network designers to interchange hubs in their wiring closets with switches, as shown in Figure 121. Figure 12-1 Evolution from shared to switched internetworks.

The raw(a)(a) wiring closet Si handed-down wiring closet Shared hub Multilayer switch (Layers 2 and 3) LAN switch (Layer 2) Hub ambiance campus switch Router Router cisco router Traditional backbone Router CDDI/FDDI concentrator Cisco router The new backbone Shared hub This strategy allows network managers to encourage their quick wiring investments and boost network performance with utilise bandwidth to the desktop for each user. Coinciding with the wiring closet evolution is a similar trend in the network backbone. Here, the determination of asynchrono us Designing Switched LAN Internetworks 12-! 1 Technologies for construct Switched LAN Internetworks Transfer person-to-person manner (ATM) is increasing as a result of standardizing protocols, much(prenominal) as LAN emulation (LANE), that enable ATM devices to coexist with existing LAN technologies. Network designers are collapsing their router backbones with ATM switches, which conjure the great backbone bandwidth required by high-throughput data services. Technologies for Building Switched LAN Internetworks With...If you want to get a full essay, enjoin it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay