IPv6移动IPv6.ppt

TCP/IP and OSI model BOOTP /DHCP Introduction to ICMPv6, Multicast Listener Discovery , Neighbor Discovery, Autoconfiguration and IPv6 DNS ? ICMPv6( RFC 2463 ) "Super" Protocol ? rfc4443 ? MLD (Multicast Listener Discovery) ( RFC 2710 ) – Based on IGMPv2 – Current version: MLDv2 ( RFC 3810 ) (= IGMPv3 in IPv4) ? Neighbor Discovery (ND) ( RFC 2461 -> rfc4861 ) – Neighbor cache – DAD - Duplicate Address Detection – Redirection – SEND - Secure Neighbor Discovery ( RFC 3971 ) ? Auto-configuration : – Stateless Address Autoconfiguration ( RFC 2462 -> rfc4862 ) – DHCPv6: Dynamic Host Configuration Protocol ( RFC 3315 ) – Path MTU discovery ( pMTU ) (RFC 1981) – Router Renumbering (RFC 2894 ) ? IPv6 DNS – IPv6 records and IPv6 transport ( RFCs related to DNS: 1886, 2672, 2673, 2874, 3363, 3364) – Current state of deployment (RFC 3901) Overview rfc 1112 IGMPv1 rfc2236 IGMPv2 rfc3376 IGMPv3 ? ICMPv6 is more than ping! ? In IPv4, ICMP is limited to error detection, test and router redirection. ? IPv6 usage: – Error handling, test, Path MTU Discovery – Management of multicast groups (MLD) – Neighbor Discovery (ND) ? Discovery of hosts and routers on the link ? Neighbor Unreachability Detection (NUD) ? Physical layer binding (similar to ARP) ? Duplicate Address Detection (DAD) – Stateless automatic configuration – Router redirection ? Blocking ICMPv6 can lead to work malfunction. 1 ICMPv6 ( Control Message Protocol, RFC 2463 ) ? rfc4443 ? ICMPv6 is an integral part of the IPv6 architecture. ? bines functions previously subdivided among different protocols, such as : ICMPv4, IGMP ( Group Membership Protocol)v4, ARP (Address Resolution Protocol). ? ICMPv6 "Super" Protocol that : – Covers ICMP (v4) features (Error control, administration, …)– Transports ND messages – Transports MLD messages (Queries, Reports, …) ICMPv6 Every ICMPv6 message is preceded by an IPv6 header and zero or more IPv6 extension headers. The ICMPv6 header is identifie