Three protocols are essential for Networking domain. OSPF,ISIS,BGP

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Accepted Answer

OSPF, ISIS, and BGP are three essential protocols in the Networking domain.

OSPF (Open Shortest Path First) is a link-state routing protocol used for interior routing within a single autonomous system.
ISIS (Intermediate System to Intermediate System) is a link-state routing protocol used for interior routing within a single autonomous system.
BGP (Border Gateway Protocol) is a path-vector routing protocol used for routing between autonomous systems.
OSPF and ISIS are used for interior routing, while BGP is used for exterior routing.
OSPF and ISIS use Dijkstra's algorithm to calculate the shortest path, while BGP uses the path-vector algorithm.
OSPF and ISIS are open standards, while BGP is a proprietary protocol.
OSPF and ISIS are commonly used in enterprise networks, while BGP is commonly used in service provider networks.

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