1 Directions in IPv6 Implementations Patrick Grossetete Cisco IOS IPv6 Product Manager Patrick Grossetete Cisco IOS IPv6 Product Manager

2 Growth of the Internet In the Coming Decade The optical internet backbone Gigabit to terabit links Access networks xDSL, cable modem, ISDN, asynchronous dial 20,000 instantaneous sessions per Gb/s backbone bandwidth Campus Networks (LANs) UoSAT-12 Internet in Airlines

3 Growth in BGP Route Table Projected routing table growth without CIDR/NAT Deployment Period of CIDR Moore’s Law and NATs make routing work today Source: http// ops/bgptable.html But they cannot be relied on forever

4 What will IP6 do for routing? Primarily give us a second chance to delegate addresses Assume: ~60 Top Level Addresses ~2000 Next Level Addresses delegated to small ISPs /48 addresses in one TLA for multihoming Result: Your route table has ~60 TLAs, Your customers and subnets, and Routes you incorporate by bilateral agreement

5 Deployment of IPv6 Services: Starting from the Edge Business Drivers are Home Area Networks with persistent connections, Wireless Data and VoIP No Flag Day No Performance Penalty Investment Protection & Low startup cost Incremental Upgrade/Deployment Registry allocations are hurting (International) So our strategy that reflects this … Starting with Edge upgrades enable IPv6 service offerings now

6 IPv6 over IPv4 Tunnels IPv4 Enterprise IPv6 over IPv4 Internet ala 6Bone Any Cisco IOS routers running IPv6 software can be used at the Edge 6over4 Tunnel 6to4 Tunnel Leveraging defined Tunneling Technology IPv6 Enterprise Service Provider IPv4 Backbone Translating Gateways IPv6 Enterprise Now

7 IPv6 over ATM & FR Backbone IPv6 Enterprise Translating Gateway IPv6 over ATM or Frame Relay WAN & MAN backbones Cisco BPX, MGX, IGX switches Catalyst 8500MSR, LightStream 1010 Any Cisco routers with ATM uplink or Serial port (FR) running IPv6 software can be used ATM & FR PVC’s running Native IPv6 Service Provider ATM/FR Backbone Now

8 IPv6 over “Any Transport over MPLS” IPv4 Enterprise IPv6 Enterprise Service Provider MPLS Backbone Translating Gateway IPv6 Router IPv6 Router IPv6 over “Any Transport over MPLS” IOS 12.0(10)S feature Cisco 7200/7500/12000 series at the Core running MPLS High-speed Sonet/SDH backbone Better performances Any Cisco IOS IPv6 Edge routers ATM uplink to GSR FR uplink to 7200/7500 IPv6 Traffic takes benefits of MPLS MPLS/CoS Traffic Engineering Now

9 IPv6 over MPLS IPv6 becomes the “Multiprotocol” portion of MPLS … IPv4 or IPv6 Control Plane, MPLS Data Plane means No Forklifts Leverages VPN Support - scalable, customer-by- customer, site-by-site. Traffic Engineering capabilities - e.g. route via translating gateways Services Transparency - e.g. Provisioning, QoS, Security. IPv4 Enterprise IPv6 Enterprise Service Provider MPLS Backbone Translating Gateway MPLS LSPs PE Router CE Router CE Router Providers can therefore readily offer IPv6 Addresses while preserving investment

10 Native IPv6 Backbone IPv4 Enterprise IPv4/v6 Intranet Mobile IPv6 Translating Gateway IPv4 Intranet IPv6 Intranet Translating Gateway IPv4 Tunnel IPv6 Backbone

11 Cisco IOS: the Confluence of IPv4/v6 IPv6 Phase I - Currently in Beta, FCS IOS 12.2(1)T (October 2000) RIPv6, Multi-protocol BGP, ICMPv6, ND, Tunnel Support, 6to4, Ping, Trace, Telnet, FTP, Access Lists etc. IPv6 Phase II CEFv6, NAT-PT, Additional Routing Protocols (e.g. i/IS-IS), IPv6 QoS, IPv6 over MPLS, etc. IPv6 Phase III Mobility, IP Multicast, VoIPv6, Security etc. IPv6 Hardware support

12 IPv6 - Conclusion Monitor Commercial availability SUN Solaris 8, Microsoft Windows 2000 follow-up release, … New Mobile specifications (3GPP R00, MWIF) support for IPv6 IPv6 Services Deployment from Providers Integration and Co-existence mechanisms deployed NAT-PT, 6to4, IPv6 over MPLS, native IPv6,… Cisco IOS : The Confluence of IPv4/v6 IPv6 in production deployment ?!

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