WAN Network DesignRouting

•We have looked at some of the issues involved in building scalable and heterogeneous networks by using switches and routers to interconnect links and networks.
•To deal with heterogeneous networks, we have discussed in details the service model of Internetworking Protocol (IP) which forms the basis of today’s routers.
•We have discussed in details two major classes of routing algorithms
–Distance Vector
–Link State


Forwarding versus Routing
Distance Vector
Count-to-infinity Problem
Routing Information Protocol (RIP)
Link State Routing
Shortest Path Routing
Open Shortest Path First (OSPF)