January 2002
Beginner
238 pages
6h 20m
English
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Connecting to the Internet
Several key design issues should be considered when connecting to the Internet. These issues impact the reliability, performance and cost of Internet connectivity. I will examine several design alternatives in the following sections, then look at a case study.
Design Alternatives
There are three alternatives regarding physical connectivity between the client and the ISP(s):
- Singly-homed
A single circuit may be adequate for a small organization generating a trickle of traffic. The client organization must choose an ISP and decide on the speed of the access circuit. However, if that single circuit breaks, the entire organization will be without Internet service. Hence, if the organization’s access to the Internet is critical, multi-homing is warranted (even when the traffic volume is small).
- Multi-homed to the same ISP
An organization may decide to implement multiple circuits between itself and its ISP for reliability. An organization that decides to multi-home has a more complex task at hand. Should the links be of the same speed? What should the link speeds be? How should inbound traffic be distributed over the links? How should outbound traffic be distributed over the links?
- Multi-homed to different ISPs
A multi-homed organization may consider using more than one ISP for additional reliability. This will guard against failures in a single ISP network.
There are several options regarding the routing of traffic between the client organization and the Internet. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.