Routing Information Protocol (RIP) comes in two versions. RIPv1 is a legacy protocol, but a network designer should know its shortcomings in order to understand the evolution to RIPv2.
The major drawback of RIPv1 is its classful behavior, meaning it does not send subnet mask information in its routing updates. If there is no subnet mask information in the updates about prefixes, then a consistency of the used prefixes is assumed. This means RIPv1 does not offer VLSM support.
Another issue with RIPv1 is that it broadcasts updates. In addition to the unnecessary use of bandwidth, this also . . .
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