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)

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.

...

2bytes	2bytes	2bytes	2bytes
Type1	ASN	4byte value
Type2	4-byte IP		value
Type3	4-byte ASN		value

disabled (yes \| no)
export - a group of parameters associated with the vpnv4 export
	.filter-chain (name)	The name of the routing filter chain that is used to filter prefixes before exporting.
	.filter-select(name)	The name of the select filter chain that is used to select prefixes to be exported exporting.
	.redistribute(bgp \| connected \| dhcp \| fantasy \| modem \| ospf \| rip \| static \| vpn)	Enable redistribution of specified route types from VRF to VPNv4.
	.route-targets(rt[,rt])	List of route targets added when exporting VPNv4 routes. The accepted RT format is similar to the one for Route Distinguishers.
import - a group of parameters associated with the vpnv4 import
	.filter-chain (name)	The name of the routing filter chain that is used to filter prefixes during import.
	.route-targets(rt[,rt])	List of route targets that will be used to import VPNv4 routes. The accepted RT format is similar to the one for Route Distinguishers.
	.router-id(name \| ip)	The router ID of the BGP instance that will be used for the BGP best path selection algorithm.
label-allocation-policy (per-prefix \| per-vrf)
name
route-distinguisher (rd)		Helps to distinguish between overlapping routes from multiple VRFs. Should be unique per VRF. Accepts 3 types of formats. Read more>>
vrf (name)		Name of the VRF table that this VPN instance will use.

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