By Mark McGregor
For a complicated view of networking layout ideas that is going from lofty to granular within the blink of a watch, community layout and Case reports is a definite winner. This enormous access in Cisco's turning out to be number of reference books offers equivalent elements educational idea and functional application.The first half the booklet bargains solely with layout, beginning with an evidence of the 3 forms of networks (campus, extensive zone, and distant connections). The ebook outlines the layout tendencies governing these networks this day and explains the units used to create them and their capabilities, in addition to powerful how you can combine the 3. the remainder chapters veer off into extra particular community forms, comparable to Asynchronous move Mode (ATM), net Protocol (IP), and Switched LAN, and the gear and protocols most suitable for these situations.The moment 1/2 this quantity is devoted to real-word challenge fixing. The eleven "case examine" chapters specialise in really sticky concerns - corresponding to Routing info Protocol (RIP) and Open Shortest course First (OSPF) redistribution, lowering provider ads Protocol (SAP) site visitors in Novell Internetwork Packet alternate (IPX) networks, and person Datagram Protocol (UDP) broadcast flooding - and suggest configuration ideas to mend them. As traditional, this books holds the considered necessary flood of appendices; in spite of the fact that, during this example the "Reference and instructed interpreting" access is unquestionably the main necessary.
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Additional info for Cisco CCIE Fundamentals: Network Design
2-26 Cisco CCIE Fundamentals: Network Design Choosing Internetworking Reliability Options Router Discovery Hosts must be able to locate routers when they need access to devices external to the local network. When more than one router is attached to a host’s local segment, the host must be able to locate the router that represents the optimal path to the destination. This process of finding routers is called router discovery. The following are router discovery protocols: • End System-to-Intermediate System (ES-IS)—This protocol is defined by the ISO OSI protocol suite.
If the lead router becomes unavailable, the HSRP router elects a new leader who inherits the HSRP MAC address and IP address. High-end routers (Cisco 4500, 7000, and 7500 families) can support multiple MAC addresses on the same Ethernet or FDDI interface, allowing the routers to simultaneously handle both traffic that is sent to the standby MAC address and the private MAC address. The commands for enabling HSRP and configuring an HSRP group are standby ip and standby group. Identifying and Selecting Internetworking Devices Network designers have four basic types of internetworking devices available to them: • • • • Hubs (concentrators) Bridges Switches Routers Internetworking Design Basics 2-33 Identifying and Selecting Internetworking Devices For a summary of these four internetworking devices, see Table 2-1 earlier in this chapter.
A policy within this internetworking context is a rule or set of rules that governs end-to-end distribution of traffic to (and subsequently through) a backbone network. One department might send traffic representing three different protocols to the backbone, but might want to expedite one particular protocol’s transit through the backbone because it carries mission-critical application information. To minimize already excessive internal traffic, another department might want to exclude all backbone traffic except electronic mail and one key custom application from entering its network segment.
Cisco CCIE Fundamentals: Network Design by Mark McGregor