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  • RFC 4271 Border Gateway Protocol 4
  • RFC 4456 BGP Route Reflection
  • RFC 5065 Autonomous System Confederations for BGP
  • RFC 1997 BGP Communities Attribute
  • RFC 8092 BGP Large Communities
  • RFC 4360, 5668 BGP Extended Communities
  • RFC 2385 TCP MD5 Authentication for BGPv4
  • RFC 5492 Capabilities Advertisement with BGP-4
  • RFC 2918 Route Refresh Capability
  • RFC 4760 Multiprotocol Extensions for BGP-4
  • RFC 2545 Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing
  • RFC 4893 BGP Support for Four-octet AS Number Space
  • RFC 4364 BGP/MPLS IP Virtual Private Networks (VPNs)

  • RFC 4761 Virtual Private LAN Service (VPLS) Using BGP for Auto-Discovery and Signalling
  • RFC 6286 - AS-wide Unique BGP Identifier for BGP-4
  • RFC 4273 - SNMP peer table monitoring (OID 1.3.6.1.2.1.15.3.1)
  • RFC 6793 -  4-byte ASN support and Aggregator attribute.


BGP Terminology

  • AS - Autonomous System
  • ASN - Autonomous System Number
  • NLRI - Network Layer Reachability Information is what is being exchanged between BGP peers and represents how to reach the prefixes.
  • IGP - Interior Gateway Protocol
  • EGP - Exterior Gateway protocol
  • RR - Route reflector is the router in the BGP network that reflects advertisements to all the neighbors, avoiding the requirement for full BGP mesh. 
  • Route server - is the BGP router that does not participate in traffic forwarding. Routes are typically not even installed in the FIB.
  • loopback address - a /32 address configured on a dummy bridge interface, that can act as a loopback.

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