Ipv6 over broadband service models
This presentation is the property of its rightful owner.
Sponsored Links
1 / 30

IPv6 over Broadband Service Models PowerPoint PPT Presentation


  • 81 Views
  • Uploaded on
  • Presentation posted in: General

IPv6 over Broadband Service Models. Mark Williams 魏迈凯 Academic Networking Liaison, Asia Pacific [email protected] IPv6 over Broadband Services – Target Market and Service Requirements. Carriers in APAC want to run IPv6 across their broadband networks

Download Presentation

IPv6 over Broadband Service Models

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


IPv6 over Broadband Service Models

Mark Williams 魏迈凯

Academic Networking Liaison,

Asia Pacific

[email protected]


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 emergedTwo 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.


Technical Service Details for IPv4

  • PPP-Based Services

  • Non PPP-Based Services


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.


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.


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….

Summary - IPv4 BRAS Service Models


IPv6 over BroadbandTechnical Service Details

  • PPP-Based Services

  • Non PPP-Based Services


RADIUS

The PPPoE Dual Stack

Carrier

IPv4 and IPv6 Network

Layer 2Access

VC or VLAN

Layer 2 or Layer 3 CPE device

ERX IPv4/IPv6 Edge Router

IPv4 and / or IPv6 devices

Simultaneous Support for IPv4 and IPv6 traffic over a single PPP connection


“Dual Stack”Protocol Layers

IPv4

Applications

IPv6

Applications

}

IPv4

IPv6

  • Based on PPP(oX)

  • One PPP Session

  • Two Layer 3 Protocols

PPP

PPPoE or

PPPoA

ATM or

Ethernet


More detail – IPv4 Connection Setup

  • NCP - IPCP used for :

    • IP address assignment – via Local pools or Radius

    • DNS Server addresses, etc

    • etc

IPv4 /

IPCP

PPP / LCP

  • PPP - LCP used for :

    • user authentication

    • connection establishment

    • connection maintenance / monitoring

PPPoE or

PPPoA

ATM or

Ethernet


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


How else can the PPPoE model be used ?

Carrier

IPv4 and IPv6 Network

Layer 2Access

VC or VLAN

Layer 2 CPE device

ERX IPv4/IPv6 Edge Router

IPv4 and / or IPv6 devices

  • 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?


Technical Service Details

  • PPP-Based Services

  • Non PPP-Based Services


The Non-PPP model

Carrier

IPv4 and IPv6 Network

Layer 2Access

VC or VLAN

Layer 2 or Layer 3 CPE device

ERX IPv4/IPv6 Edge Router

IPv4 and / or IPv6 devices

  • 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)


Prefix Assignment in the Non-PPP model - Layer 3 CPE Case

Carrier

IPv4 and IPv6 Network

Layer 2Access

VC or VLAN

Layer 3 CPE device

ERX IPv4/IPv6 Edge Router

IPv4 and / or IPv6 devices

  • IPv6 connection setup :

  • DHCP-PD & Opt-DNS – directly over Ethernet

  • IPv4 connection setup :

  • PPPoE

  • ND / RA

  • (requires gateway router to be a DNS Proxy )


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

  • BRASresponds with configured values

  • ND / RA used to assign IPv6 addresses to IPv6 devices behind CPE Router.


Prefix Assignment in the Non-PPP model - Layer 2 CPE Case

Carrier

IPv4 and IPv6 Network

Layer 2Access

VC or VLAN

Layer 2 CPE device

ERX IPv4/IPv6 Edge Router

IPv4 and / or IPv6 devices

  • Neighbor Discovery

  • Router Advertisement

  • (some sort of DNS info exchange?)


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

IPv6 BRAS Service Model Summary


IPv6 Servicesand ProductsIn Use Today


Juniper IPv6 Firewall and B-RAS

NS 5XT

IPv6 CPE Firewall

ERX IPv4/IPv6 B-RAS

Broadband Access

IPv4

IPv6

IPv4 and / or IPv6 devices

IPv4

IPv6

  • One Circuit

  • 2 Network Protocols

IPv4 / IPv6 Firewall & VPN platform

PPP

DHCP-PD or

Neighbor

Discovery

PPPoE

ATM VC or

Ethernet VLAN


References in IPv6 Network Engineering

  • GEANT V6 task force

    • http://www.join.uni-muenster.de/geantv6/

  • DANTE:

    • www.dante.net/nep/ipv6/index.html


IPv6 Network References

GEANT IPv6 Test Program: http://www.juniper.net/news/pressreleases/2001/pr-011128.html

ESNET / 6TAP at PAIX: http://www.juniper.net/news/pressreleases/2001/pr-011128.html

France Telecom / VTHD: http://www.juniper.net/news/pressreleases/2001/pr-011128.html

CSC / FUNET: http://www.juniper.net/news/pressreleases/2002/pr-020507.html

Internet2 / Abilene: http://archives.internet2.edu/guest/archives/I2-NEWS/log200204/msg00003.html

Canarie / CA*net 4: http://www.juniper.net/news/pressreleases/2002/pr-020710.html

ESNET: http://www.juniper.net/news/pressreleases/2002/pr-020828.html

ARNES, DANTE, and REDiris: http://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.html

Japan Gigabit Network: http://www.juniper.net/news/pressreleases/2002/pr-021112.html

Chunghwa Telecom HiNet: http://www.juniper.net/news/pressreleases/2003/pr-030114.html

NTT Communications: http://www.juniper.net/company/presscenter/pr/2003/pr-030218a.html


E-series Broadband Services Router

The industry’s leading high-end Broadband Services Routers.

Worldwide market share leader for Broadband deployments


Proven Platforms

Highly Resilient, Available

3-Dimensional Scalability

The New, Extended T-series Family

TX Matrix

T640

T320


Over 3 Billion Packets Per Second !

November 2004 – Delivering on our promise

Juniper Introduces the TX Matrix Platform

T640

T640

T640

T640


Juniper Networks IPv6 deploymentWorldwide

Americas

APAC

EMEA


Thank You


  • Login