RIP-2
RIP version 2 (RIP-2), is a classless routing protocol. Figure 1 shows the packet format.
Compared with RIP-1, RIP-2 has the following advantages:
Supports route tag and can flexibly control routes on the basis of the tag in the routing policy.
Has packets that contain mask information and support route aggregation and Classless Inter-domain Routing (CIDR).
Supports the next hop address and can select the optimal next hop address in the broadcast network.
Uses multicast routes to send update packets. Only RIP-2 routers can receive protocol packets. This reduces the resource consumption.