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OSPF is internal gateway ,whereas BGP is external gateway.
Convergence- fast in OSPF , slow in BGP.
Design - hierarchical network possible in OSPF , fully meshed in BGP.
Algorithm - OSPF uses Dijkstra Algorithm , BGP uses best path algorithm.
Protocol - OSPF has IP protocol , BGP has TCP protocol.
Port - OSPF has port 89 , BGP has port 179.
Type - Link state in OSPF , Path vector in BGP.
Need of device resources - Memory & CPU intensive in OSPF , Depends on the size of the routing table but scales better than OSPF.

© 2015 Thirumurugan

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