By Qing Li
This ebook is the second one installment of a two-volume sequence on IPv6 and the KAME implementation. This publication discusses these protocols which are present in extra able IPv6 units, are typically deployed in additional advanced IPv6 community environments, or are usually not particular to IPv6 yet are prolonged to aid IPv6. in particular, this booklet engages the readers in complex themes similar to routing, multicasting, DNS, DHCPv6, mobility, and protection. This two-volume sequence covers a large spectrum of the IPv6 expertise, support the readers identify good and empirical realizing on IPv6 and the KAME reference implementation paralleled by means of none. Key positive factors: * huge code listings with meticulous line-by-line clarification of reason and use for KAME photograph implementations on complex IPv6 similar protocols, together with: -Unicast and multicast routing and DNS consumer according to KAME photo dated April 2003, that are a base of more moderen types of BSD versions -Mobile IPv6 in line with KAME photograph dated July 2004, a predecessor model of the "SHISA" implementation -DHCPv6 in response to KAME photograph dated could 2005, a base of the WIDE-DHCPv6 implementation to be had at SourceForge this day * a variety of diagrams and illustrations assist in visualizing the implementation * In-depth dialogue of the factors presents intrinsic realizing of the necessities * An advent to the IP safety protocols besides using the racoon key alternate daemon * CD-ROMs full of the total KAME IPv6 protocol stack and FreeBSD software program * the single authoritative reference "cookbook" for someone attracted to complicated IPv6 subject matters and protocols. * Line-by-line stroll via of genuine code is helping the reader grasp IPv6 implementation * entire in scope, according to a operating normal, and punctiliously illustrated to convey the protocols alive.
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Additional info for IPv6 Advanced Protocols Implementation
Example text
BGP4+ uses the path-vector algorithm and solves the routing loop detection problem by including the path to the destination in the route message. When a BGP4+ router receives a route update, a router will update the path information to include its ASN before redistributing that route to other ASs. Since BGP4+ is an exterior routing protocol, routing information is exchanged among ASs, each with a different routing policy that governs what information could be made externally visible. For this reason, the path information carried in the route message is a list of ASNs instead of a list of specific routers in order to hide the internal topology of each AS on that path.
Figure 1-11 illustrates the special RTE that is used for specifying a next hop address. The IPv6 next hop address field contains a link-local address of the next hop router, which belongs to the interface that shares the same network segment as the advertising router. The metric field is set to 0xFF. If the next hop address is ::, then the originating router of the message is used as the next hop router. If the next hop address is not a link-local address, then again the originating router is used as the next hop router.
BGP4+ uses the path-vector algorithm and solves the routing loop detection problem by including the path to the destination in the route message. When a BGP4+ router receives a route update, a router will update the path information to include its ASN before redistributing that route to other ASs. Since BGP4+ is an exterior routing protocol, routing information is exchanged among ASs, each with a different routing policy that governs what information could be made externally visible. For this reason, the path information carried in the route message is a list of ASNs instead of a list of specific routers in order to hide the internal topology of each AS on that path.