August 1999
Intermediate to advanced
328 pages
8h 50m
English
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UNDUE PROCESSING OVERHEAD
We are beginning to tread into waters that are beyond the subject of this book, but a few more comments can be made. The protocol stack in Figure 7-3 can be improved. The problem is that the backbone is running IP in each node. To get a sense of why this configuration is not efficient, assume that the traffic is coming into router 2's incoming interface on link 2. This router must execute AAL to reassemble the small ATM cells into the PPP and then IP data units. Then, IP performs a route lookup to make a forwarding decision. After these operations, the IP datagram is passed back to PPP, then AAL, ATM, and the outgoing L_1 interface. This process is repeated at each node in the backbone, and the time and resources expended ...
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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.