BGP4?Inter-Domain Routing in the Internet, by John W. Stewart III. (Addison-Wesley Professional, 1998).
BGP4 Case Studies/Tutorial, by Sam Halabi. Cisco Systems, http://www.ittc.ku.edu/EECS/EECS_800.ira/bgp_tutorial/
Internet Routing Architectures, Second Edition, by Sam Halabi. (Cisco Press, 2001).
Routing TCP/IP, Volume II, by Jeff Doyle and Jennifer DeHaven Carroll. (Cisco Press, 2001).
Cisco BGP-4 Command & Configuration Handbook, by William R. Parkhurst. (Cisco Press, 2001).
Mastering Regular Expressions, Second Edition, by Jeffrey E. F. Friedl. (O'Reilly and Associates, 2002).
BGP?Building Reliable Networks with the Border Gateway Protocol, by Iljitsch van Beijnum.
"BGP Multipath Load Sharing for Both eBGP and iBGP in an MPLS-VPN" at Cisco.com
"Configuring BGP" at Cisco.com
http://www.traceroute.org
http://joe.lindsay.net/bgp.html
http://www.bgp4.as/
http://www.stonesoft.com/products/StoneGate/Features_and_Benefits/Multi-Link_Technology/?from_google=5
http://www.radware.com/content/products/lp/default.asp
"Route Server Daemon," at http://www.isi.edu/ra/RSd/
http://www.nanog.org
http://www.ietf.org
http://www.isoc.org
http://www.caida.org
http://www.radb.net
http://www.rsng.net
http://www.bgpexpert.com
RFC 1771, "A Border Gateway Protocol 4 (BGP-4)"
RFC 1772, "Application of the Border Gateway Protocol in the Internet"
RFC 1966, "BGP Route Reflection: An Alternative to Full-Mesh IBGP"
RFC 1997, "BGP Communities Attribute"
RFC 2270, "Using a Dedicated AS for Sites Homed to a Single Provider"
RFC 2283, "Multiprotocol Extensions for BGP-4"
RFC 2385, "Protection of BGP Sessions via the TCP MD5 Signature Option"
RFC 2439, "BGP Route Flap Damping"
RFC 2545, "Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing"
RFC 2796, "BGP Route Reflection"
RFC 3065, "Autonomous System Confederations for BGP"
RFC 2858, "Multiprotocol Extensions for BGP-4"
"Capabilities Negotiation with BGP4," IETF draft draft-ietf-idr-cap-neg-01
"BGP Extended Communities Attribute," IETF draft-ramachandra-bgp-ext-communities-04.txt
"BGP4+ Peering Using IPv6 Link-Local Address," draft-kato-bgp-ipv6-link-local-00.txt