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BGP Lab Description

  • Basic BGP routing,
  • BGP-Split-Horizon avoidance using iBGP full mesh config in AS-100,
  • BGP-Split-Horizon avoidance using Route Reflectors configs in AS-125,
  • iBGP Next-hop behavior issues in AS100
  • Resolved iBGP Next-hop behavior using ‘next-hop-self’ cmd in AS-125
  • EBGP adjacency using WAN-LINKS between AS-2 & AS-100, AS-100 & AS-125
  • EBGP adjacency using LoopBackInterfaces between AS-125 & AS-50, AS-100 & 130
  • EBGP redundacy Links between AS-100 & 130
  • Network Automation
  • iBGP neighbor adjacencies using loopbacks in AS-100
  • iBGP neighbor adjacency using WAN-Links in AS-125
  • OSPF as underlay network reachability in AS-100 & AS-125
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Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information between autonomous systems (AS) on the Internet. The protocol is often classified as a path vector protocol but is sometimes also classed as a distance-vector routing protocol.

How does BGP work?

A. This is a little beyond the scope of this document, however in simplest terms, BGP learns routes from your internal routing protocol (static routes, RIP, OSPF etc.) and announces them to a BGP-speaking neighbor or peer (the T-Mobile router in this case). read more


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