When do you use BGP, IGRP, OSPF, Static Routes?
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Answer Posted / arjun
BGP: Boder Gateway Protocol: When you need your network to
reach internet we need BGP. For interdomain routing we need
BGP. When we need our network to reach another network we
need BGP, BGP acts as a mediator for communicating to
different domains.
IGRP : Interior Gateway Routing Protocol: Its a Interior
Gateway Protocol (distance vector)
OSPF: Open Shortest Path First : Its a link state protocol.
OSPF is a Interior Gateway Routing Protocol.When our
organisation is Medium - big sized OSPF can be used.
OSPF works by creating Areas (Area 0 is compulsory)
Depending on requirement different areas are created like:
Stub area, NSSA area, Toatally stub and Totally NSSA.
Differnt roles are played by routers depending where they
sit in network:
Internal router
Backbone router
Area Border Router
Autonomous System Boundery Router
Differnt router mentioned above generate multiple LSA
provinding information about network:
LSA 1,2,3,4,5,7
Static Routes: When our network is quite small and we want
to define routes manually we configure static routes.
But when network grows defining routes statically can be
very difficult and complicated .
| Is This Answer Correct ? | 23 Yes | 5 No |
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