September 1999
Intermediate to advanced
416 pages
11h 5m
English
Content preview from Designing Wide Area Networks and Internetworks: A Practical GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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11. Creating a Preliminary Backbone Topological Design
This chapter explains how to develop a topological design for an internetwork backbone. Historically, most work in this area focused on cost optimization for partial-mesh leased line networks, the most complex class of networks. Although these networks continue to be significant, many internetworks today are constructed by using fast packet services, most notably Frame Relay, provided by the carriers. Over time, similar networks operating over carrier-provided ATM, or a mixture of Frame Relay and ATM, may enjoy comparable popularity. From an internetworking protocol perspective, classic partial-mesh leased line networks and Frame Relay/ATM–based networks are largely equivalent; however, they ...
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