【導(dǎo)讀】IPv6Rationales. WhatisIPv6?BasicPerspectives. 6Boneisphasingout,6NETisclosed,…numberingresources;and,possible.NationalITstrategy. Japan,Korea,…HDTV,…MobileSP–3G/4G/WiMax,IPNGNIMS,IP/TVonMobiles. NetworksinMotion. Networ

　　

【正文】 rtesy service IPv6 Multicast for streaming (Triple Play) 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 36 IPv6 over MPLS Infrastructure ? Service Providers have already deployed MPLS in their IPv4 backbone for various reasons MPLS/VPN, MPLS/QoS, MPLS/TE, ATM + IP switching ? Several IPv6 over MPLS scenarios IPv6 Tunnels configured on CE (no impact on MPLS) IPv6 over Circuit_over_MPLS (no impact on IPv6) IPv6 Provider Edge Router (6PE) over MPLS amp。 IPv6 VPN over MPLS (6VPE) with no impact on MPLS core Native IPv6 MPLS (require full work upgrade) ? Upgrading software to IPv6 Provider Edge Router (6PE) Low cost and risk as only the required Edge routers are upgraded or installed Allows IPv6 Prefix delegation by ISP 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 37 Minimum Infrastructure Upgrade for 6PE GE GE GE IPv6 Server 6PE router Cisco 7600 as 6PE Data Center IPv6 Network MPLS/IPv4 MPLS Core up to OC192 GE IPv4 Server NATPT Only IPv6 segment ?6PE – RFC 4798 – defined by Cisco and available from IOS ?MPLS/IPv4 Core Infrastructure is IPv6unaware ? PEs are updated to support Dual Stack/6PE ? IPv6 reachability exchanged among 6PEs via iBGP (MPBGP) ? IPv6 packets transported from 6PE to 6PE inside MPLS FTTH MPiBGP session 6PE router v6 v4/v6 v4 CE POP DSL POP 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 38 IPv6 Integration on MPLS VPN infrastructure ? MPLS/IPv4 Core Infrastructure is IPv6unaware ? PEs are updated to support Dual Stack/6VPE ? IPv6 VPN can coexist with IPv4 VPN – same scope and policies ? 6VPE – RFC 4659 – Cisco authored for IPv6 VPN over MPLS/IPv4 infrastructure ? Cisco IOS (33)SRB on 7600, IOSXR on C12020 Site1 Site2 PE1 PE2 P2 P1 CE2 VRF red VRF red CE1 iGPv4 (OSPF, ISIS) LDPv4 MPeBGP session Addressfamily IPv4 Addressfamily IPv6 MPeBGP session Addressfamily IPv4 Addressfamily IPv6 Dualstack work Dualstack work Dual stack server Dualstack ipv4 addresses: ipv6 addresses: 2020:100::/64 vrf Addressfamily IPv4 Addressfamily IPv6 2020:101::/64 2020:201::/64 MPiBGP session Addressfamily VPNv4 Addressfamily VPNv6 vrf definition site1 rd 100:1 routetarget import 100:1 routetarget export 100:1 addressfamily ipv4 addressfamily ipv6 ! interface ether0/0 vrf forwarding site1 ip address ipv6 address 2020:100::72b/64 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 39 Cisco IOS IPv6 Broadband Access Solutions Video IPv6 Multicast Distributed Computing (GRID) Enterprise Inter ISP A PSTN Dial DSLAM DSL Access Ether DOCSIS proposal Cable Mobile RAN NAS BAS Headend Layer 2 Encapsulation(s) ATM RFC 1483 Routed or Bridged (RBE) PPP, PPPoA, PPPoE, Tunnel (Cable) DualStack or MPLS (6PE) Core IPv4/IPv6 IPv4/IPv6 Firewall PIX, IOS FW IPv6 Prefix Pools IPv6 Radius (Cisco VSA and RFC 3162) DHCPv6 Prefix Delegation Stateless DHCPv6 DHCPv6 Relay Generic Prefix 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 40 Prefix/Options Assignment CPE PE ISP Host ISP provisioning system DHCP ND/DHCP AAA (1) CPE sends DHCP solicit with ORO = PD (2) PE sends RADIUS request for the user (3) RADIUS responds with user’s prefix(es) (4) PE sends DHCP REPLY with Prefix Delegation options (5) CPE configures addresses from the prefix on its downstream interfaces, and sends an RA. Obit is set to on (6) Host configures addresses based on the prefixes received in the RA. As the Obit is on, it sends a DHCP INFORMATIONREQUEST message, with an ORO = DNS (7) CPE sends a DHCP REPLY containing request options DHCP Client DHCP Server 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 41 Summary The EndUser Perspective IP version needs to be transparent Markets Perspective IPv6 enables innovation, scalability and simplicity Software Developer Perspective Applications must be “IP agnostic” Network Manager Perspective Infrastructure must be deliver IPv6 up to the edge/access layer Ensure an orderly and secured transition using Cisco IPv6 Solutions 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 42 Q and A 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 43 More Information ? CCO IPv6 ? Cisco IPv6 Solutions ? IPv6 Application Notes ? Cisco IOS IPv6 manuals 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 44