By Cisco Systems Inc., Tom Thomas, Atif Khan
Cisco structures deals degrees of certification that correspond on to participants' specific wishes and the place they're of their occupation improvement. CCIE (Cisco qualified Internetwork professional) is this type of certification courses; it's considered because the optimum point of networking professional certifications within the undefined. as well as the baseline internetworking wisdom coated within the advised education classes, Cisco means that the main to luck at the CCIE examination is a number of years of sensible box adventure mixed with a established self-study software. CCIE basics: community layout and Case experiences, moment version presents a accomplished number of configuration eventualities and layout suggestions adapted for CCIE guidance. each one bankruptcy is a self-contained resolution that provides insights into the implementation of sensible networking concepts versatile sufficient to slot quite a few events.
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Extra resources for Network Design and Case Studies (CCIE Fundamentals) (2nd Edition)
Example text
Packets are translated and sent out the other port as necessary. Interprotocol Route Redistribution The preceding section, "Gateway Service," discussed how routed protocol gateways (such as one that translates between AppleTalk Phase 1 and Phase 2) allow two end nodes with different implementations to communicate. Routers can also act as gateways for routing protocols. htm (17 of 35) [9/16/2000 5:03:39 PM] Internetworking Design Basics by, another routing protocol, such as RIP. This is useful when running multiple routing protocols in the same internetwork.
Benefits include a high-speed backbone (essentially the router's backplane) and cost efficiency (less media). Unfortunately, if the router's power system becomes faulty, each network connected to that router loses its capability to communicate with all other networks connected to that router. Some backbone-in-a-box routers can address this requirement by providing redundant power systems. In addition, many sites connect one power system to the local power grid and the other to an uninterruptable power supply.
Static route information can also be redistributed. Defaults can be assigned so that one routing protocol can use the same metric for all redistributed routes, thereby simplifying the routing redistribution mechanism. Media Translation Media translation techniques translate frames from one network system into frames of another. Such translations are rarely 100 percent effective because one system might have attributes with no corollary to the other. For example, Token Ring networks support a built-in priority and reservation system, whereas Ethernet networks do not.