History of Interior Gateway Protocols
Historically speaking, RIP Version 1 (RIPv1) was the first popularly used IP routing protocol, with the Cisco-proprietary Interior Gateway Routing Protocol (IGRP) being introduced a little later, as shown in Figure 20-1.
Figure 20-1 Timeline for IP IGPs
By the early 1990s, business and technical factors pushed the IPv4 world toward a second wave of better routing protocols. RIPv1 and IGRP had some technical limitations, even though they were great options for the technology levels of the 1980s. The huge movement toward TCP/IP in the 1990s drove the need for better IPv4 routing protocols. In the 1990s, many ...
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