PLACEMENT OF ROUTING PROTOCOLS IN THE PROTOCOL STACK
We have learned that route discovery can take place with layer 2 or layer 3 addresses. This section goes into more detail about the layered model and the placement of protocols in the protocol stack. Figure 1-6 shows the placement of route discovery protocols in the Internet layered architecture that pertain to layer 2 or layer 3 route discovery protocols.
Figure 1-6. Routing Protocols and the Protocol Stack The Layered Model
First, in Figure 1-6 (a), the general Internet layered model is shown. This model and the functions of the layers are described in Appendix A. Next, the bridge model ...
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