What type of routing information do distance vector routing protocols send to their neighbors?

Distance vector routing protocols primarily send information about known destination networks along with their associated metrics to neighboring routers. This information typically includes the address of the destination network and the cost or distance to reach that network, which is often measured in terms of hop count. Each router shares its entire routing table with its directly connected neighbors at regular intervals or when there is a change in the network topology.

This approach allows each router to build a picture of the overall network and makes decisions about where to forward packets based on the shortest path to each known destination. This method of exchanging routing information is fundamental to how distance vector protocols operate, enabling them to effectively inform other routers about the best routes available to reach various network destinations.