Selecting or Choosing Appropriate Routing Protocol
OSPF—Open Shortest Path First
Convergence: Fast
Protocol Type: Link-state, runs the Dijkstra algorithm to calculate the shortest-path first (SPF) tree
Update Timers: Only when Change occurs , on the other hand LSA Table is refreshed after 30 Sec
Metric: Cost
Updates : Only Changes
Classless: Yes
VLSM Support: Yes
Working: Develops adjacencies with its neighbors, periodically sending hello packets to neighbors, flooding changes to neighbors when a link’s status changes, and sending “paranoia updates” to neighbors every 30 minutes of all recent link state changes
Algorithm:Dijkstra
Update Address: 244.0.0.5 (SPF routers)
244.0.0.4 (DR's and BDR's)
Protocol and Port: IP Protocol and 89
Origin: Based on RFC 2328
Where to Use: Any network, small to very large
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