IPv6 transition for mobile networks. Tomas lynch ip & convergence Lacnog, sao paulo, brazil October 2010

Transcription

1 IPv6 transition for mobile networks Tomas lynch ip & convergence Lacnog, sao paulo, brazil October 2010

2 agenda Introduction Transition and Migration Plan Mobile Networks Components Technical Recommendations LTE and IPv6 Conclusions IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 2

3 introduction IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 3

4 The main drivers for migration Explosion of active IP-based end point devices iphone, smart phones, mobile broadband. New services and new user behavior 50 billion IP connections globally by 2020 driven mainly by machine-to-machine (M2M) and new applications Running out of IPv4 addresses can hinder growth of number of subscribers Regulation IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 4

5 Status of IPv6 in Cellular Networks Deployment today involves either public IPv4 addresses or private addresses and a NAT But networks do support both IPv4 and IPv6 Supported in 3GPP releases since R5 Network products generally support this today Some newer signaling protocols are even IPv6-only Some but not all terminals support IPv6 The situation in cellular networks is a part of the overall IPv6 deployment situation - lack of IPv6 services is a barrier IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 5

6 Burning issues & Key questions How will new services impact existing services? How to provide always-on services to cater for M2M? Do we need to migrate now? How far can our current address space go? How can we provide IPv6-IPv4 co-existence? During migration, how can we minimize the impact on user experience? How can we minimize migration costs? IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 6

7 Ipv6 migration Migration from IPv4 to IPv6 cannot be done in just one day Smooth migration to IPv6 Need to still support IPv4 for a while Co-existence phase of IPv4 and IPv6 IPv6 transition means you don t have IPv4 anymore IPv4 Only IPv4 / IPv6 Co-existence IPv6 Only today IPv4 depletion IPv6 transition t IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 7

8 Transition & migration strategy IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 8

9 Transition and migration strategy GAP ANALYSIS MIGRATION STRATEGY MIGRATION PLAN DETAILED DESIGN PROOF OF CONCEPT (OPTIONAL) IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 9

10 Benefits of the strategy Enable new IPv6-based services as required by the operator s business Stepwise approach allowing people to gain experience and competence gradually Introduction in existing network in multiple steps until full IPv6 functionality has been reached in all parts of the network Cost-effective network design reducing both risk and the cost of implementation IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 10

11 Mobile network components IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 11

12 mobile Network components MPBN Site Corp. Netw. Roaming MSC-S DNS FW FW CPG MGW RNC BSC R/S R/S 2G / 3G / 4G R R MGW MGWMGW SGSN SGSN Switch Switch Router Router R R R IP/MPLS MPBN Backbone R R R/S MGW RNC BSC GGSN CPG RNC BSC Internet R/S R/S SGSN MGW RNC BSC MPBN Site MPBN Site MPBN Site 2G / 3G / 4G IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 12

13 Technical recommendations IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 13

14 M-PBN 6pe Client node Site router Site Router Site Router Client node IP/MPLS BACKBONE Client node Site router Site Router Client node IPv4 connectivity Site Router IPv6 connectivity IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 14

15 M-PBn 6VPE IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 15

16 GPRS Core Network Start with the user plane Then the transport plane UE IP on end-user application level UTRAN Core NW IP on transport level GGSN Appl. Server Uu Iu-PS Gn/Gp Gi Appl Appl TCP/UDP TCP/UDP IP IP IP PDCP PDCP GTP-U GTP-U GTP-U GTP-U RLC RLC UDP UDP UDP UDP L2 L2 MAC MAC IP IP IP IP L1 L1 L2/L1 L2/L1 L2/L1 L2/L1 L1 L1 UE UTRAN SGSN GGSN Host IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 16

17 DUAL stack broadband access Mobile and 3GPP A key feature did appear since R8.1.0 (not supported in R8.0.0) See 3GPP spec section Following PDP type are supported IPv4 IPv6 IPv4v6 (dual stack) This feature mainly impact EPC nodes SGSN S4 interface needs to manage all 3 types of PDP context (IPv4, IPv6 and IPv4v6) Packet gateways needs to manage and create dual stack PDP context and map it to Dual stack VRF UEs IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 17 PDP-context PDP-context PDP-context PDP-context or PDP-context PDP-context PDP-context Packet Gateway APN1 (IPv6) APN2 (DS) APN3 (IPv4) VRF1 VRF2 VRF3 IPv4 IPv6 Dual Stack VPN 1 VPN 2 VPN 3

18 single PDP Contexts Single stack PDP context Service NW External NWs IPv4 IPv4 Translator Translator IPv6 IPv6 IPv4 IPv6 IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 18

19 dual PDP Contexts Dual stack PDP context Service NW External NWs IPv4 IPv4 Translator Translator IPv6 IPv6 IPv4 IPv6 3GPP Release 8 (EPC) and Release 9 (GPRS) IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 19

20 Technical recommendation (cont.) Transport plane Introduce IPv6 depending on IPv6 availability in client nodes and market needs Walled Garden Services Services and users reside within a contained environment - Walled Garden (e.g. IP Multimedia Subsystem IMS) One IP version. No IP version Interworking functions within the Walled Garden. i.e. may remain with IPv4 IPv6 deployment may be OPEX driven O&M Network May use IPv4 forever IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 20

21 So, now you are ipv6 only Before everybody is IPv6 your network may be IPv6 How to reach those IPv4 cavemen? ;) IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 21

22 LTE and IPv6 IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 22

23 Lte overview LTE is specified by 3GPP as an All IP Networking Architecture LTE offers superior user experience and simplified technology for next-generation mobile broadband. LTE needs more capacity for demanding applications such as interactive TV, mobile video blogging, advanced games and professional services. LTE provides downlink peak rates above 100Mbps. The current standardization of LTE allows for speeds more than 300Mbps. IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 23

24 Lte and ipv6 More and more devices are using mobile networks to reach the Internet Also to IP services such as IPTV and Multimedia Telephony Mobile Broadband Router is another device connecting to mobile networks IPv6 must be a requisite from the beginning for LTE to support such amount of devices and services Verizon is requiring IPv6 devices to connect to its LTE IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 24

25 conclusions IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 25

26 conclusions IPv6 helps to expand customer base 3GPP and IETF already have standards Equipment providers already supporting those standards Migration can be done with a stepwise approach A detailed plan is needed for migration Co-existence is inevitable (and maybe forever) Need of NAT64 for those still in IPv4 Dark Ages LTE must be configured with IPv6 from the beginning IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 26

27 IETF and 3GPP v4v6 Documents 3GPP TR IPv6 migration guidelines 3GPP TR Interworking aspects and migration scenarios for IPv4-based IP Multimedia Subsystem (IMS) implementations IPv6 in 3GPP Evolved Packet System Guidelines for Using IPv6 Transition Mechanisms IETF/3GPP Workshop on IPv4->IPv6 Coexistence and Transition in 3GPP Networks March RFC 4038 Application Aspects of IPv6 Transition RFC 4213 Basic Transition Mechanisms for IPv6 Hosts and Routers IPv6 Transition for Mobile Networks Ericsson Confidential Ericsson AB Page 27

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