the$future$of$home$networking:$ an$incremental$approach€¦ · tomorrow’s!home!network!...

The Future of Home Networking: An Incremental Approach

NANOG 58 // New Orleans // 4 June 2013 Chris Grundemann

Home LAN 2

Home LAN 1

Yesterday’s Home Network

Internet Service Provider

Wi-‐Fi Range Extension

NAT

NAT

6/4/13 Chris Grundemann 2

Emerging use cases for the home network •  MulSple SSIDs –  User and provider managed

•  Femto cell –  Cellular services

•  Smart grid •  Security, Monitoring, & AutomaSon •  MulS-‐homing •  IP content sharing –  Inside and outside the home

•  TelecommuSng –  Corporate IT requirements

•  Ever increasing IP devices •  Heterogeneous link layer technologies 6/4/13 Chris Grundemann 3

Tomorrow’s Home Network

Home LAN 2

Home LAN 1


Wi-‐Fi Range Extension

MulSple SSIDs: Private, Guest, Community,

ISP Branded, Etc. Guest LAN

Home LAN 4 ZigBee Network

Home LAN 3

Home AutomaSon Gateway

IP Sensor Gateway

Home Entertainment

Gateway Key assump=on: Home users will not be configuring advanced

networks


The Importance of Home Networks •  Failure causes service calls •  Plaaorm for all IP services


PHASE I RFC6204(bis)


Add IPv6 to Home Networks

•  IPv6 is being deployed today (thankfully) • Home networks are growing today

•  A soluSon is needed today (or sooner) – Based on RFC 6204/bis


Phase I Example (and Issues)


PHASE II HIPnet



•  A self-‐configuring home router architecture

– Flexible – Scalable – Autonomous

– Proven Protocols

HIPnet is a SoluSon to Complex Home Networks

Common Principles Guide HIPnet

•  Home networks will become more complex, home users will not

•  Invoking a god box leads to religious wars •  New protocols bring new problems

•  Use IPv6, support IPv4 • We have enough addresses


HIPnet Meets Current Needs with ExisSng FuncSonality


•  Self-‐Organizing: DirecSonless Routers •  Addressing: Recursive Prefix DelegaSon •  RouSng: Hierarchical RouSng •  Bonus: MulSple Address Family Support

•  Prototype demonstrated at IETF 86!

DirecSonless Home Routers


Up DetecSon

R1 R2 R3

RS

RA DHCP Req.

Offer

ULA GUA

ULA GUA

GUA GUA

“UP”

Default route


DeterminisSc Up Interface SelecSon Criteria

•  Valid GUA preferred •  Internal prefix preferred over external •  Largest prefix •  Link type/bandwidth •  First response •  Lowest numerical prefix


More Complicated Up DetecSon Example

R1

R2 R3

R4

Internet

PD req.

/60

/64

/64

UP


DirecSonless Routers Example: Rearranging the Network

R1

R2 R3

R4

Internet

RS

RS RA

No RA

UP

UP

Also, see following slides for case where R4 ends up on same LAN as R1, R2, R3



HIPnet Creates a Logical Hierarchy from a Physically Arbitrary Network

R1

R2

R3

R4

R5

Physical ConnecSon

IP ConnecSon 18 6/4/13 Chris Grundemann

Recursive Prefix DelegaSon

Home LAN 2

Home LAN 1


Guest LAN

Home LAN 4 ZigBee Network

Home LAN 3

/56

/60 /60

/64 /64


Width vs. Depth


R1

Rn Rn Rn Rn Rn

Width = 3 Width = 5

Width vs. Depth


R1

Depth = 4 Rn

Rn

Rn

Width OpSmizaSon

•  Fit PD to width and depth of network – Provide greatest flexibility

•  Algorithmically selected bit-‐boundary – Physical port count as width proxy


Hiearchical RouSng Table

Up

Down

::/0 Default Router

IA_PD Downstream IR’s “Up Interface” IP


MulSple Address Family Support: Link ID

GUA IPv6 Address 48b -‐ ISP 64b – Interface ID 16b – Link ID

48b -‐ ULA

IPv4 “10.”

/64

/24


Basic MulShoming Support

•  Special purpose IP connecSon – IP Video, etc.

•  Backup connecSon – acSve/standby

•  “True” mulShoming – acSve/acSve (limited)

(More info in backup slides) 6/4/13 Chris Grundemann 25

PHASE III More Efficient USlizaSon


Add a RouSng Protocol



R1

Physical ConnecSon

IP ConnecSon

R3

R5

R4 R2

PHASE IV Going Even Further


InteresSng IGP Enhancements

•  Use OSPFv3 to assign prefix’ – draq-‐arkko-‐homenet-‐prefix-‐assignment

•  Use IGP adjacencies to find borders – draq-‐kline-‐homenet-‐default-‐perimeter


Beser MulShoming

•  Use Source Address Dependent RouSng (SADR) – draq-‐troan-‐homenet-‐sadr

•  Use a middlebox and a mulShoming service provider (MSP) – draq-‐haddad-‐homenet-‐mulShomed

•  Use a new rouSng protocol: Two Dimensional-‐IP (TwoD-‐IP) – draq-‐xu-‐homenet-‐twod-‐ip-‐rouSng


CONCLUSION So what?


•  Do nothing (Phase I) – Service calls – Broken service discovery – Single router IPv6 – Unknown environment

•  HIPnet (Phase II) – Self-‐configuring – Whole home networking – Common plaaorm for IP services


Help Ensure the Future!

•  Support the HIPnet Internet-‐Draq – draq-‐grundemann-‐homenet-‐hipnet

•  Support the HIPnet open source project – [email protected]

•  Build a commercial HIPnet soluSon – eRouter is HIPnet compliant

•  HIPnet – Ask for it by name –  Industry alignment – Vendor engagement


QuesSons?

@ChrisGrundemann [email protected] hsp://chrisgrundemann.com

34 6/4/13 Chris Grundemann

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