Dual-Homed
The dual-homed design has two (or more) links to the Internet, but with all links connecting to a single ISP. This type of design can use a pair of routers, two pairs, or a combination, as shown in the three cases in Figure 13-9.
Figure 13-9 Dual-Homed Design Options
Comparing the dual-homed case to the single-homed design, the second link gives the enterprise a choice. The enterprise router(s) could choose between one of two links, and in the case with two enterprise routers, the choice of a different link also means the choice ...
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