Importance of Border Gateway Protocol(BGP)
- Security: BGP is highly secure because it authenticates messages between routers using preconfigured passwords through which unauthorized traffic is filtered out.
- Scalability: BGP is more scalable because it manages a vast number of routes and networks present on the internet.
- Supports Multihoming: BGP allows multihoming means an organization can connect to multiple networks simultaneously.
- Calculate the Best Path: As we know data packets is traveled across the internet from source to destination every system in between the source and destination has to decide where the data packet should go next
- TCP/IP Model: BGP is based on the TCP/IP model and it is used to control the network layer by using transport layer protocol.
Border Gateway Protocol (BGP)
The protocol can connect any internetwork of the autonomous system using an arbitrary topology. The only requirement is that each AS have at least one router that can run BGP and that is the router connected to at least one other AS’s BGP router. BGP’s main function is to exchange network reachability information with other BGP systems. Border Gateway Protocol constructs an autonomous systems graph based on the information exchanged between BGP routers.
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