IPv6 Deployment Architecture for Broadband Access Networks. Nurul Islam Roman, APNIC

Transcription

1 IPv6 Deployment Architecture for Broadband Access Networks Nurul Islam Roman, APNIC Issue Date: [Date] Revision: [xx]

2 Flashback: Internet Architecture 1 st generation Internet: What was the architecture? 4 Nodes in 1969 (ARPANET) 19 Nodes in

3 Flashback: Internet Architecture 1 st generation Internet: Peer-to-peer model End devices have content to share A computer (PC/mainframe/terminal) is connected to the Internet Scope of Internet usage was limited to academic research and US defence network Processing power and capacity was an important issue Applications were processed using CPU-based machines Needs stable and considerable power to run this End-to-end visibility was a requirement 3

4 Flashback: Internet Architecture 2 nd generation Internet: Client server model WWW, etc services were invented Majority of Internet content stored on the server Client machines used to access content from the server Exponential growth of Internet started IETF realized IPv4 protocol address space was insufficient (1990 IETF Meeting by Solensky) IPv4 protocol has outlived its design life NAT/CIDR introduced to expand the lifetime of IPv4 End-to-end visibility has disappeared 4

5 Flashback: Internet Architecture 3 rd generation Internet : Peer-to-peer and client server End devices will have information to exchange Low cost, low power, wireless, embedded computing devices Exchange control information both ways with central server Hardware-based embedded processing VS CPU-based computer processing Scope of Internet usage will expand beyond traditional client server application Hybrid client server and peer-to-peer End-to-end communication will be very important Restriction-free growth of architecture will be key design consideration 5

6 IPv4 for Broadband Access Network xdsl Home/DSL DSLAM BRAS DOCSIS Cable Home/Cable DOCSIS/Head End BRAS FTTx /Metro Ethernet Home/Ethernet Fiber to Home/Metro Ethernet Wifi Hotspot Smart Device Wifi /Controller BRAS Mobile Internet/3G/4G Mobile Device Mobile Tower GGSN Hybrid Broadband Access Network Dual Stack/MPLS (6PE/6VPE) IP Core Network 6

7 IPv4 for Broadband Access Network xdsl Home/DSL DSLAM BRAS DOCSIS Cable Home/Cable DOCSIS/Head End BRAS FTTx /Metro Ethernet Home/Ethernet Fiber to Home/Metro Ethernet Wifi Hotspot Smart Device Wifi /Controller BRAS Mobile Internet/3G/4G Mobile Device Mobile Tower GGSN Hybrid Broadband Access Network Dual Stack/MPLS (6PE/6VPE) IP Core Network 7

8 IPv4 for Broadband Access Network Public IPv4 Private IPv4 xdsl Home/DSL DSLAM BRAS DOCSIS Cable Home/Cable DOCSIS/Head End BRAS FTTx /Metro Ethernet Home/Ethernet Fiber to Home/Metro Ethernet Wifi Hotspot Smart Device Wifi /Controller BRAS Mobile Internet/3G/4G Mobile Device Mobile Tower GGSN Hybrid Broadband Access Network Dual Stack/MPLS (6PE/6VPE) IP Core Network 8

9 IPv4 for Broadband Access Network Public IPv4 Private IPv4 CPE End user NAT or CG NAT xdsl Home/DSL DSLAM BRAS DHCP Allocate end device IP DOCSIS Cable Home/Cable DOCSIS/Head End BRAS FTTx /Metro Ethernet Home/Ethernet Fiber to Home/Metro Ethernet Wifi Hotspot Smart Device Wifi /Controller BRAS Mobile Internet/3G/4G Mobile Device Mobile Tower GGSN Hybrid Broadband Access Network Dual Stack/MPLS (6PE/6VPE) IP Core Network 9

10 IPv4 for Broadband Access Network This architecture will scale if: End user devices are limited No end-to-end communication is required Internet remains in Client Server Architecture This architecture may not scale if: IoT growth sky rockets on end site It needs a control process to keep track of individual devices DHCP, BRAS, PPPoE etc. It needs end-to-end communication Internet changes back to Peer-to-peer model 10

11 IPv4/IPv6 Header Comparison IPv4 contains 10 basic header fields IPv6 contains 6 basic header fields IPv6 header comprises 40 octets (fixed) in contrast to 20 octets (variable) in IPv4 So a smaller number of header fields and the header is 64-bit aligned to enable fast processing by current processors 11

12 IPv6 Addressing Structure ISP given global prefix SLAC interface ID 128 bits Network prefix Interface ID Unicast /3 Regional /12 ISP /32 Customer site /48 End site subnet /64 Device 128-bit address 12

13 Network Prefix - Global Routing Table /3 /12 /12 ISP /32 ISP /32 Enterprise /48 Enterprise /48 /12 ISP /32 Enterprise /48 /12 ISP /32 Enterprise /48 /12 ISP /32 Enterprise /48 13

14 Network Prefix - Global Routing Table (IPv4) Active AS De-aggregation: /54062 = Prefix/ASN (as of May 22, 2016) Stat source: 14

15 Network Prefix - Global Routing Table (IPv6) Active AS De-aggregation: 29336/11631 = 2.52 Prefix/ASN (as of May 22, 2016) Stat source: 15

16 Legitimate Prefix Global Routing Multihome and portable prefix Internet ISP Prefix 3fff:ffff::/32 AS64500 Check LoA of Cust prefix Manual process to tech-c Automated process IRR & RPKI AS64501 Check LoA of Cust prefix Manual process to tech-c Automated process IRR & RPKI Filter requirement for Transit ISP Route filter permit /48 & /32 in/out or Route filter permit ::/0 only in/out Blocked Allowed AS64502 Customer Prefix 2001:0DB8::/32 Blocked Allowed /50, /47, /46 etc most specific /32, /48 only most specific 16

17 IPv6 End Site Subnet What is an IPv6 end site? Last part of the network Not further extended to another L3 network Future Internet growth on end site Internet of Things (IoT) Internet of Everything Possibly growth area on end site How far can it grow? 2 64 possible devices 17

18 IPv6 End Site Subnet What is an IPv6 end site? Last part of the network Not further extended to another L3 network Future Internet growth on end site Internet of Things (IoT) Internet of Everything Possibly growth area on end site How far can it grow? 2 64 possible devices 18

19 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 P-to-P IPv6 Home (RA wlan /64 or P-to-P /64 /64 P-to-P IPv6 (RA p-to-p (RA or or LL) Case A To IP Core Network DHCP PD (Home) + RA (p-to-p) 19

20 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 P-to-P IPv6 Home (RA wlan /64 or P-to-P /64 IPv6 (RA p-to-p or Case A To IP Core Network DHCP PD (Home) + RA (p-to-p) 20

21 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 /64 P-to-P IPv6 Home (RA/LL) wlan /64 P-to-P /64 IPv6 (RA p-to-p or Case A To IP Core Network DHCP PD (Home) + RA (p-to-p) /64 IPv6 Home wlan (DHCP PD) This is a public IPv6 global address for home wlan No NAT 21

22 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 /64 P-to-P IPv6 Home (RA/LL) wlan /64 P-to-P /64 IPv6 (RA p-to-p or Case A To IP Core Network DHCP PD (Home) + RA (p-to-p) /64 IPv6 Home wlan (DHCP PD) Based on RFC6164 P-to-P prefix can be /127, /126 etc 22

23 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan Case A /56 Prefix Delegation to Home Network To IP Core Network /64 IPv6 Home wlan DHCP PD (Home) + RA (p-to-p) Case B /64 IPv6 Home wlan Home/DSL DSLAM BRAS 23

24 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan Case A /56 Prefix Delegation to Home Network To IP Core Network /64 IPv6 Home wlan DHCP PD (Home) + RA (p-to-p) Case B /64 IPv6 Home wlan Home/DSL DSLAM BRAS 24

25 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan Case A /56 Prefix Delegation to Home Network To IP Core Network /64 IPv6 Home wlan DHCP PD (Home) + RA (p-to-p) Case B /64 IPv6 Home wlan Home/DSL DSLAM BRAS 25

26 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan Case A /56 Prefix Delegation to Home Network To IP Core Network /64 IPv6 Home wlan DHCP PD (Home) + RA (p-to-p) Case B /56 IPv6 Home wlan (DHCP PD) /64 IPv6 Home wlan Home/DSL DSLAM BRAS 26

27 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan Case A /56 Prefix Delegation to Home Network To IP Core Network /64 IPv6 Home wlan /64 IPv6 PD Home DHCP DHCP PD (Home) + RA (p-to-p) Case B /56 IPv6 Home wlan (DHCP PD) /64 IPv6 Home wlan /64 IPv6 PD Home DHCP Home/DSL DSLAM BRAS 27

28 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan /64 /64 IPv6 P-to-P p-to-p (RA or To IP Core Network DHCP PD (Home) + RA (p-to-p) 28

29 IPv6 Broadband Access Network /64 Prefix Delegation to Home Network /64 IPv6 Home wlan /64 /64 IPv6 P-to-P p-to-p (RA or To IP Core Network DHCP PD (Home) + RA (p-to-p) End site growth: * 2 64 devices * Auto configuration (SLAC) * ISP DHCP one prefix only 29

30 Policy Guideline on IPv6 Delegation APNIC IPv6 Address Delegation Guideline /64 P-to-P (RA or 30

31 Policy Guideline on IPv6 Delegation APNIC IPv6 Address Delegation Guideline /64 P-to-P (RA or 31

32 Policy Guideline on IPv6 Delegation APNIC IPv6 Address Delegation Guideline /64 P-to-P (RA or 32

33 IPv6 Future IoT Layer 2 & 3 Standard!! voice, , IM video, TV, conf WWW, DNS IoT apps x/WiMax mobile/4g/lte cable/xdslx/fttx LoRa, 6loWPAN 33

34 IPv6 Future IoT Layer 2 & 3 Standard!! voice, , IM video, TV, conf WWW, DNS IoT apps /64 Prefix Delegation to Home Network /64 IPv6 Home wlan /64 /64 IPv6 P-to-P p-to-p (RA or To IP Core Network DHCP PD (Home) + RA (p-to-p) End Site Growth: * 2 64 Devices * Auto Configuration * ISP DHCP One Prefix Only x/WiMax mobile/4g/lte cable/xdslx/fttx LoRa, 6loWPAN 34

35 Future End Side Growth 35

36 Thank you