Friday, 9 March 2018

IGP vs EGP and ASN | Network

Interial Gateway Protocol (IGP):

IGP is a routing protocol that handles routing within a SINGLE autonomous system(AS).
RIP, RIPv2, IGRP, EIGRP and OSPF are the examples of IGP.

Exterior Gateway Protocol (EGP):
EGP handles routing betweeen difference AUTONOMOUS SYSTEMS (ASs).
BGP is the example of EGP.

What is Autonomous system number (ASN)?

An ASN is globally unique number which enables the system to exchange EXTERIOR routing information with  other neighboring ASs.

reference: https://www.cisco.com/c/en/us/about/press/internet-protocol-journal/back-issues/table-contents-12/autonomous-system-numbers.html

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