Research On Development Of Border Gateway Protocol In IPv6 And Improvment Of Its Security Attribute

BGP-4+ is an interautonomous system routing protocol, which is very widely deployed on IPv6 networks. At present, BGP-4+ is one of the most important protocols for communicating autonomous systems.This paper introduces the technology of Multiprotocol Extensions for BGP-4(BGP-4+) which extends BGP-4 to enable it to .carry routing information for IPv6. Two abilities are added to BGP-4, they are (a) the ability to associate a particular Network Layer protocol with the next hop information, and (b) the ability to associate a particular Network layer protocol with NLRI. Two new attributes, MP_ REACH_ NLRI, and MP_UNREACH_ NLRI are used for the purpose of conveying IPv6 routing information.This thesis studied to analyze the principles of BGP4 and BGP 4+ protocol in detail first. By using the linux operation system, develop a software which support BGP and carry on a verification experiment.By analyzing the safe problem existing in the protocol, Message digest algorithm MD5 was used in the TCP protocol, which has greatly improved the safety of the protocol.