1

Directions in IPv6 ImplementationsDirections in IPv6 Implementations

Patrick Grossetete

Cisco IOS IPv6 Product Manager

pgrosset@cisco.com

Patrick Grossetete

Cisco IOS IPv6 Product Manager

pgrosset@cisco.com

2www.cisco.com

Growth of the InternetIn the Coming DecadeGrowth of the InternetIn the Coming Decade

• The optical internet backbone

Gigabit to terabit links

U N I V E R S I T YU N I V E R S I T Y

• Access networksxDSL, cable modem, ISDN, asynchronous dial

20,000 instantaneous sessions per Gb/s backbone bandwidth

Campus Networks

(LANs)UoSAT-12

Internetin Airlines

3www.cisco.com

0

10000

20000

30000

40000

50000

60000

70000

80000

90000Ju

n-8

8

Dec

-88

Jun

-89

Dec

-89

Jun

-90

Dec

-90

Jun

-91

Dec

-91

Jun

-92

Dec

-92

Jun

-93

Dec

-93

Jun

-94

Dec

-94

Jun

-95

Dec

-95

Jun

-96

Dec

-96

Jun

-97

Dec

-97

Jun

-98

Dec

-98

Jun

-99

Dec

-99

Growth in BGP Route TableGrowth in BGP Route Table

Projected routing table growth without CIDR/NAT

Deployment Period of CIDR

Moore’s Law and NATsmake routing work today

Source: http//www.telstra.net/ops/bgptable.html

But they cannot berelied on forever

4www.cisco.com

What will IP6 do for routing?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

5www.cisco.com

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 nowStarting with Edge upgrades enable IPv6 service offerings now

6www.cisco.com

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

IPv6 Enterprise

Service Provider Service Provider IPv4 BackboneIPv4 Backbone

TranslatingGateways

IPv6 Enterprise

Now

7www.cisco.com

IPv6 over ATM & FR Backbone

IPv6 Enterprise

IPv6 Enterprise

IPv6 Enterprise

TranslatingGateway

• 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 Service Provider ATM/FR BackboneATM/FR Backbone

Now

8www.cisco.com

IPv6 over “Any Transport over MPLS”

IPv4 Enterprise

IPv6 Enterprise

IPv6 Enterprise

IPv6 Enterprise

Service Provider Service Provider MPLS BackboneMPLS Backbone

TranslatingGateway

IPv6Router

IPv6Router

• IPv6 over “Any Transport over MPLS”IOS 12.0(10)S feature

• Cisco 7200/7500/12000 series at the Core running MPLSHigh-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 MPLSMPLS/CoS

Traffic Engineering

Now

9www.cisco.com

IPv6 over MPLSIPv6 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

IPv6 Enterprise

IPv6 Enterprise

Service Provider Service Provider MPLS BackboneMPLS Backbone

TranslatingGateway

MPLS LSPs

PE Router

CERouter

CERouter

Providers can therefore readily offer IPv6 Addresses while preserving investmentProviders can therefore readily offer IPv6 Addresses while preserving investment

10www.cisco.com

Native IPv6 Backbone

IPv4 Enterprise

IPv4/v6 IntranetMobile IPv6

TranslatingGateway

IPv4 Intranet

IPv6 Intranet

IPv6 Intranet

TranslatingGateway

IPv4 Tunnel

IPv6 Backbone

11www.cisco.com

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

12www.cisco.com

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 - 2002 ?!

13Presentation_ID © 1999, Cisco Systems, Inc. www.cisco.com