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1 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Mark Williams Academic Networking Liaison, Asia Pacific

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Presentation on theme: "1 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Mark Williams Academic Networking Liaison, Asia Pacific"— Presentation transcript:

1 1 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Mark Williams Academic Networking Liaison, Asia Pacific miw@juniper.net IPv6 over Broadband Service Models

2 2 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv6 over Broadband Services – Target Market and Service Requirements Carriers in APAC want to run IPv6 across their broadband networks Most interest so far in Japan due to Government technology push & funding for IPv6 development Interest is also growing in other APAC countries including Korea, India, China, Taiwan, etc. There have emerged Two IPv6 over Broadband standards : NTT Com, ACCA, KDDI etc in Japan are running or trialling PPP based IPv4 and IPv6 Dual Stack BRAS NTT East / West / SI Labs is building a whole new nationwide network and they want Non-PPP based services.

3 3 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Technical Service Details for IPv4 PPP-Based Services PPP-Based Services Non PPP-Based Services Non PPP-Based Services

4 4 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv4 Standards Business broadband – generally uses Bridged or Routed 1483 for static, always-on service models. Subscriber services are based on either PPPoE or DHCP. Point to Point Protocol over Ethernet (PPPoE) based on PPP, extended by RFC 2516 Dynamic Host Configuration Protocol (DHCP) is based on work in BootP, extended by RFC 1541, usually implemented as compliant to RFC 2131.

5 5 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Protocol Design Intentions PPPoE PPPoE is designed to establish a WAN connection to a remote client. PPPoE extends PPP to Ethernet, providing for authentication, authorization, accounting and network layer configuration. DHCP DHCP is designed to supply DHCP clients (usually in a broadcast domain i.e. LAN) with network configuration parameters.

6 6 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net PPP & DHCP Feature Comparison FeaturePPPoEDHCP AuthenticationIntegrated, provided by LCP. Identifies user. No authentication, can be extended using options but identifies machine. AuthorizationSupplied to NAS/BRAS by RADIUS based on user identity. No authorisation. Can be extended by ext. apps using DHCP options based on machine identity. AccountingSupplied by NAS/BRAS.No accounting. Supported by external applications.

7 7 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net FeaturePPPoEDHCP StatefulnessState kept by PPP keepalivesNo state kept. Can be supplied by keeping lease short. PC SupportRequires 3 rd party software unless OS < 2yr old. Supported by all current OS. Customer service support + Provides feedback on connectivity. - 3 rd party s/w hard to troubleshoot. - No feedback on connectivity. Need CLI (or winipcfg). + No need for 3 rd party s/w PPP & DHCP Feature Comparison

8 8 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Summary - IPv4 BRAS Service Models PPP-based model Requires PPPoE client software or CPE device Session based service model User authentication & accounting information present Radius based AAA Leverages LCP and IPCP protocols Non PPP-based model Business services Bridged / Routed 1483 services Subscriber Services DHCP based broadband remote access Good for lightweight clients Requires many add-ins to DHCP to allow AAA, session monitoring, accounting, etc etc etc etc….

9 9 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv6 over Broadband Technical Service Details PPP-Based Services PPP-Based Services Non PPP-Based Services Non PPP-Based Services

10 10 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Carrier IPv4 and IPv6 Network Layer 2 Access The PPPoE Dual Stack VC or VLAN IPv4 and / or IPv6 devices Layer 2 or Layer 3 CPE device ERX IPv4/IPv6 Edge Router RADIUS Simultaneous Support for IPv4 and IPv6 traffic over a single PPP connection

11 11 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Dual Stack Protocol LayersDual Stack Protocol Layers PPPoE or PPPoA PPP IPv4IPv6 IPv4 Applications IPv6 Applications Based on PPP(oX) One PPP Session Two Layer 3 Protocols ATM or Ethernet }

12 12 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net More detail – IPv4 Connection Setup PPPoE or PPPoA PPP / LCP IPv4 / IPCP NCP - IPCP used for : IP address assignment – via Local pools or Radius DNS Server addresses, etc etc ATM or Ethernet PPP - LCP used for : user authentication connection establishment connection maintenance / monitoring

13 13 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Notes about IPv6 Connection setup: NCP – IPv6CP used only for exchange of Link-Local addresses - not much use at all in a BRAS environment. JunosE development started in 2002 while specifications were Internet Drafts but they are now RFCs : DHCPv6 – draft-ietf-dhc-dhcp6-26.txt RFC 3315 draft-troan-dhcpv6-opt-prefix-delegation-01.txt RFC 3633 draft-ietf-dhc-dhcpv6-opt-dnsconfig-03 RFC 3646

14 14 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Carrier IPv4 and IPv6 Network Layer 2 Access How else can the PPPoE model be used ? VC or VLAN IPv4 and / or IPv6 devices Layer 2 CPE device ERX IPv4/IPv6 Edge Router Native Client device support for both IPv4 and IPv6 over single PPP stack Eg - simply extend the existing Windows XP PPPoE client to support IPv6 Eg Windows VISTA 2007?

15 15 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Technical Service Details PPP-Based Services PPP-Based Services Non PPP-Based Services Non PPP-Based Services

16 16 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Carrier IPv4 and IPv6 Network Layer 2 Access The Non-PPP model Prefixes statically provisioned on user facing interface (VC / VLAN) DHCP-PD and opt-DNS could also be used without PPP ND / RA could also be used to advertise prefixes over Ethernet access How to do DNS in this case ? Less protocol overhead due to no PPP – BUT – bit of a drag due to lost functionality (user auth, accounting, session monitoring, etc) VC or VLAN IPv4 and / or IPv6 devices Layer 2 or Layer 3 CPE device ERX IPv4/IPv6 Edge Router

17 17 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Carrier IPv4 and IPv6 Network Layer 2 Access Prefix Assignment in the Non-PPP model - Layer 3 CPE Case VC or VLAN IPv4 and / or IPv6 devices Layer 3 CPE device ERX IPv4/IPv6 Edge Router IPv6 connection setup : DHCP-PD & Opt-DNS – directly over Ethernet IPv4 connection setup : PPPoE ND / RA (requires gateway router to be a DNS Proxy )

18 18 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Layer 3 CPE - Details Prefixes statically provisioned on the BRAS One Prefix per access subinterface (VC / VLAN) DHCP-PD and opt-DNS used between BRAS and CPE router CPE initiates DHCPv6 exchange to BRAS Requests IPv6 Prefix via DHCP-PD Requests DNSv6 info via Opt-DNS BRAS responds with configured values ND / RA used to assign IPv6 addresses to IPv6 devices behind CPE Router.

19 19 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Carrier IPv4 and IPv6 Network Layer 2 Access Prefix Assignment in the Non-PPP model - Layer 2 CPE Case VC or VLAN IPv4 and / or IPv6 devices Layer 2 CPE device ERX IPv4/IPv6 Edge Router Neighbor Discovery Router Advertisement (some sort of DNS info exchange?)

20 20 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Layer 2 CPE - Details Prefixes statically provisioned on the ERX One Prefix per access subinterface (VC / VLAN) Neighbor Discovery & Router Advertisement used between ERX and IPv6 hosts IPv6 host devices initiate Neighbor Discovery to ERX Host Retrieves IPv6 Prefix info and default gateway data via ND / RA DNSv6 info retrieved via IPv6 DNS client software ??? ERX responds with configured IPv6 Prefix & DNS information Stateless Autoconfiguration used to generate IPv6 addresses for IPv6 devices

21 21 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net DHCP-PD model details client authentication based entirely on interface one prefix per interface, statically configured default prefix lifetime configured per VR, may be overridden per-interface prefix configuration DNS information per VR only, not per client or per interface DNS information may be retrieved during prefix delegation, or with an Information request

22 22 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Non-PPP Model Summary FunctionLayer 2 CPELayer 3 CPE IPv6 Prefix configurationStatic per interface (via ND config) Static per interface (via DHCP-PD config) Prefix assignment methodNeighbor Discovery / Router Advertisement on PC DHCP-PD on CPE router DNS Server assignment method Opt-DNS Client software, DHCPv6 on ERX Opt-DNS on CPE router, DHCPv6 on ERX User authenticationNone Access media supportedATM Bridged Ethernet, Ethernet Accounting dataPer subinterface # hosts supported per VC / VLAN 1 only (?)Many (behind CPE)

23 23 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net PPP Model Summary FunctionLayer 2 CPE (future)Layer 3 CPE IPv6 Prefix configurationRadius Prefix assignment methodDHCP-PD on hostDHCP-PD on CPE router DNS Server assignment method Opt-DNS on hostOpt-DNS on CPE router User authenticationUsername / Password Access media supportedAll Accounting dataRadius # hosts supported per VC / VLAN Many (via multiple PPPoE sessions) Many (behind CPE)

24 24 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv6 BRAS Service Model Summary PPP based Requires Dual Stack (IPv4/v6) PPPoE client or device Session based service model User authentication & accounting information present Radius based AAA Leverages DHCP-PD and opt-DNS Non PPP-based DHCP-PD or ND/RA can be used in the access network No native authentication or accounting More suitable to always-on service

25 25 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv6 Services and Products In Use Today

26 26 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Broadband Access Juniper IPv6 Firewall and B-RAS IPv4 and / or IPv6 devices NS 5XT IPv6 CPE Firewall PPPoE PPP IPv4IPv6 ATM VC or Ethernet VLAN One Circuit 2 Network Protocols ERX IPv4/IPv6 B-RAS IPv4 / IPv6 Firewall & VPN platform IPv4 IPv6 DHCP-PD or Neighbor Discovery

27 27 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net

28 28 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net

29 29 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net

30 30 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net

31 31 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net References in IPv6 Network Engineering GEANT V6 task force http://www.join.uni-muenster.de/geantv6/ DANTE: www.dante.net/nep/ipv6/index.html

32 32 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net IPv6 Network References GEANT IPv6 Test Program: http://www.juniper.net/news/pressreleases/2001/pr-011128.htmlhttp://www.juniper.net/news/pressreleases/2001/pr-011128.html ESNET / 6TAP at PAIX: http://www.juniper.net/news/pressreleases/2001/pr-011128.htmlhttp://www.juniper.net/news/pressreleases/2001/pr-011128.html France Telecom / VTHD: http://www.juniper.net/news/pressreleases/2001/pr-011128.htmlhttp://www.juniper.net/news/pressreleases/2001/pr-011128.html CSC / FUNET: http://www.juniper.net/news/pressreleases/2002/pr-020507.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-020507.html Internet2 / Abilene: http://archives.internet2.edu/guest/archives/I2-NEWS/log200204/msg00003.htmlhttp://archives.internet2.edu/guest/archives/I2-NEWS/log200204/msg00003.html Canarie / CA*net 4: http://www.juniper.net/news/pressreleases/2002/pr-020710.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-020710.html ESNET: http://www.juniper.net/news/pressreleases/2002/pr-020828.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-020828.html ARNES, DANTE, and REDiris: http://www.juniper.net/news/pressreleases/2002/pr-021003.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-021003.html http://archives.internet2.edu:8080/guest/archives/I2-NEWS/log200210/msg00005.html Internet2 Gigapops: http://www.juniper.net/news/pressreleases/2002/pr-021111.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-021111.html Japan Gigabit Network: http://www.juniper.net/news/pressreleases/2002/pr-021112.htmlhttp://www.juniper.net/news/pressreleases/2002/pr-021112.html Chunghwa Telecom HiNet: http://www.juniper.net/news/pressreleases/2003/pr-030114.htmlhttp://www.juniper.net/news/pressreleases/2003/pr-030114.html NTT Communications: http://www.juniper.net/company/presscenter/pr/2003/pr-030218a.htmlhttp://www.juniper.net/company/presscenter/pr/2003/pr-030218a.html

33 33 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net E-series Broadband Services Router The industrys leading high-end Broadband Services Routers. Worldwide market share leader for Broadband deployments

34 34 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net The New, Extended T-series Family Highly Resilient, Available3-Dimensional Scalability Proven Platforms TX Matrix T640 T320

35 35 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Juniper Introduces the TX Matrix Platform November 2004 – Delivering on our promise T640 Over 3 Billion Packets Per Second !

36 36 Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net Juniper Networks IPv6 deployment Worldwide Americas EMEA APAC

37 Thank You


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