EIGRP
Enhanced Interior Gateway Protocol It is a Cisco proprietary protocol. It uses bandwidth and delay by default to calculate the best path. It can also use load and delay, but these are usually not used. It is a distance vector routing protocol. It keeps a topology map, but it is only similar to the topology map of link state routing protocols.
Which routing protocol depends on the DUAL algorithm to calculate the shortest path to a destination
OSPF stands for open shortest path first. OSPF is an exterior routing protocol. OSPF uses Path vector routing algorithm.
30 Seconds
Rip V2, EIGRP
The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing protocol to calculate this "metric".The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing protocol to calculate this "metric".The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing protocol to calculate this "metric".The availability of networks, and the metric (or "cost" or "distance") to reach them, according to the system used by the routing protocol to calculate this "metric".
Every 20 Milliseconds it updates.
generally static routing protocol has the most trustworthy administrative distance .i.e; 1 and in dynamic routing protocols EIGRP has the best AD.
2
Hop count & administrative distance. This is a measure used by the routing protocol to calculate the best path to a given destination, if it learns multiple paths to the same destination. Each routing protocol uses a different metric.
Delay and bandwidth
People use two basic methods to classify routing protocols - by where they are used and by how they calculate routing. You can see how to choose protocols based on where you plan to use them, the way the protocol manages data, and how your router chooses which protocol to use when more than one protocol is installed