A routing protocol specifies how routers communicate with each other to distribute information that enables them to select routes between nodes on a computer network. Routers perform the traffic directing functions on the Internet; data packets are forwarded through the networks of the internet from router to router until they reach their destination computer. Routing algorithms determine the specific choice of route. Each router has a prior knowledge only of networks attached to it directly. A routing protocol shares this information first among immediate neighbors, and then throughout the network.
A routing protocol is a type of client that registers with the routing table manager. Routers use routing protocols to exchange information regarding routes to a destination. Routing protocols are either unicast or multicast. Routing protocols advertise routes to a destination. A unicast route to a destination is used by a unicast routing protocol to forward unicast data to that destination. A multicast route to a destination is used by some multicast routing protocols to create the information that is used to forward multicast data from hosts on the destination network of the route known as reverse path forwarding.
US7392424B2 - Router and routing protocol redundancy - Google Patents
Hello friends, welcome back to my Networking Interview Questions Blog series. The automatic route summarization feature will cause issues with discontiguous sub-networks. Hence, this feature is usually turned off. Hello Timer — Routers will send a hello packet to its neighbor for every 5 seconds Hello time.
LAN Switching: Ethernet Network Engineer, Confidential, NJ. Nov'09 - Present.