February 2000
Intermediate to advanced
387 pages
7h 36m
English
Content preview from IP Routing Protocols
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INTERWORKING THE LAN AND WAN PROTOCOL STACKS
Figure 2-2 shows the relationships of the LAN and WAN protocol stacks. The salient aspect of this figure for this discussion is to note that the LAN protocols (Ethernet, in this example, at the physical and data link layers) do not operate on the point-to-point local loop. The point-to-point protocol (PPP) operates at the data link layer on this loop.
Figure 2-2. Typical Set of Protocol Stacks
The LAN layer 1 and 2 operations are not used in the wide area network. In their place are various layer 1 operations, such as the V.90 modem, a DS 1 link, etc. For layer 2, PPP usually operates between the ...
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