Informal Quiz 3 (solns)
????Forwarding works in the control plane whereas routing works in the data plane
????A routing protocol summarizes global information to setup a local next-hop entry in the forwarding table
????Telephony uses simple alternate path routing partly because the core is fully connected and components are extremely reliable
????The Bellman-Ford algorithm/distance-vector protocol involves checking neighbors’ distance vectors and updating its own distance vector.
????The link state method does not face the count-to-infinity problem because it has complete global information (a map in terms of link-states).
????Both the distance-vector and link-state approaches could lead to transient routing loops because the information maintained could be incomplete.
????Hierarchical addressing, and proper address assignment allows entire subnets to be viewed by interior routers as “virtual nodes”, leading to routing scalability