OPEN%NETWORK%LINUX%UPDATES% · PDF fileOCP Platform V2 Unified Device Tree Repository Unified...

Rob Sherwood CTO, Big Switch Networks Open Compute Engineering Workshop: May, 2014

OPEN NETWORK LINUX UPDATES

©2014 B IG SWITCH NETWORKS , INC . WWW.B IGSWITCH .COM 2

OUTLINE

•  Mo3va3on and Code •  Updates:

•  Website •  New hardware support

•  Going forward •  X86 Support: Interface Masters and new Accton Box •  Three “forwarding agents”: OpenFlow, OF-‐DPA, ORC

•  Ques3ons

MOTIVATION


ISN’T NETWORKING ALREADY OPEN? Faster Throughput = More commercial value = More Proprietary

Aggregate Throughput à

ß Open

10 Gb/s 100 Gb/s 1 Tb/s 10 Tb/s

All Hardware Specs Public X86 Servers

Closed OS, Open APIs for Policy, Stats

Mul[-‐chassis Routers

Closed OS, Open Control

Plane APIs

DC – 1U ToRs, Spines

Binary SDK for Packet

Forwarding NPU, FPGA, SoC


ISN’T NETWORKING ALREADY OPEN? Faster Throughput = More commercial value = More Proprietary

Aggregate Throughput à

ß Open

10 Gb/s 100 Gb/s 1 Tb/s 10 Tb/s

All Hardware Specs Public X86 Servers

Closed OS, Open APIs for Policy, Stats

Mul[-‐chassis Routers

Closed OS, Open Control

Plane APIs

DC – 1U ToRs, Spines

Binary SDK for Packet

Forwarding NPU, FPGA, SoC DC – 1U

ToRs, Spines

This project


MOTIVATION: TOWER OF BABEL IS BAD

OCP Platform V1

Hardware Layer

Device Tree #1 Initrd #1

Platform Dependent

Fedora Linux Kernel

Platform Independent

Stack #1 Stack #2 Stack #3

STP + MLAG

OCP Platform V2


Std. Debian Linux Kernel

OpenFlow daemon

White box vendor


BusyBox Linux Kernel

Quagga + hooks

Switch Agent(s)


PROPOSAL: COMMON LINUX PLATFORM

OCP Platform V1

STP + MLAG

OCP Platform V2

Unified Device Tree Repository Unified Driver Repository

Standard packages, tools, etc. Stock Linux Kernel + any patches

OpenFlow daemon

White box vendor

Quagga + hooks

Keep differentiation in switch agents

Come together around the

common bits Maximize hardware

abstraction


OPEN SOURCE: OPEN NETWORK LINUX

•  Open-‐sourced commercial code, build scripts, drivers from Switch Light •  Part of Open Compute Project (OCP)

•  Project goals: •  Improve percep[on/de-‐risk bare metal •  “Crowd source” larger Switch Light HCL

•  “Distribu3on” dynamically rebuilt on Emdebian •  PlaWorm driver API/abstrac3on: SFPs, P/S, Fans, LED, temp sensors

•  Switch hardware has more “variety” then servers – needs new drivers/tools

•  Device tree source files for plaWorms that need it (PPC – Yes, x86 – No)

A Linux distribu[on for bare metal switches

UPDATES

©2013 B IG SWITCH NETWORKS , INC . WWW.BIGSWITCH.COM 10

WEBSITE IS UP

•  Documenta[on •  Install •  Build •  Troubleshoo[ng •  FAQ

•  Mailing list •  Pointers to video tutorials

•  S[ll a work in progress •  Two posi[ons open!


ONL – SUPPORTED HARDWARE

•  New: Five Accton/Edge-‐Core and One DNI/Agema boxes

•  Next target will be x86-‐based plaeorms


EXAMPLE HARDWARE PURCHASING

Transparent Pricing

Streamlined Procurement

FORWARDING AGENTS


WHAT IS A FORWARDING AGENT? •  An applica3on that ini3alizes/manages the packet processing

hardware (e.g., ASIC) •  Currently, ONL ships with no forwarding agent! •  Hard: all code that touches hardware is under NDA

•  Solu[on: top half/bofom half driver model •  Releasing soon (details next slides)

•  OpenFlow forwarding agent (based on Indigo2) •  OF-‐DPA forwarding agent library – build your own •  Open Route Cache (ORC) – toy router forwarding agent


OPENFLOW FORWARDING AGENT

ONL Linux Kernel ASIC

LibC on Debian Wheezy Base Distribu[on ASIC SDK

SSH Fan Control NTP Syslog SNMP

CLI

Indigo

Indigo/ASIC Driver

OpenFlow Agent Loxi

Legend

Open Network Linux

BSN Open

BSN Closed

3rd Party Closed Source

ZTN Loader

I2C GPIO Device Trees

Switch Light is our Indigo OpenFlow Agent running on Open Network Linux on x86 or ASIC-‐based hardware.

Big Network Controllers


DIY Forwarding Agent: OF-‐DPA

Chip SDK

OF-‐DPA

Indigo driver

closed

OF-‐DPA API open


OPEN ROUTE CACHE (“ORC”) FORWARDING AGENT

•  First: If you’re working on something similar – let’s collaborate •  Monitors Linux soeware rou3ng table updates

•  Via RTNetlink – very common •  Copies new interfaces, routes, neighbor entries into hardware

•  Result: hardware accelerated rou[ng •  Compa3ble with:

•  Quagga, Xorp, Bird, etc. •  Manual (`route add …`)/programma[c (via netlink)

•  Code quality: Not Produc3on!

Turn ONL into a toy router

CONCLUSION


CONCLUSIONS

•  ONL is an ONIE-‐compa3ble NOS for OCP hardware •  Increasing number of boxes supported •  Lots of progress: website, new plaWorm •  New forwarding agents coming soon

•  OpenFlow, OF-‐DPA, and ORC •  “OFTest” Appliance maybe coming soon

•  “Feedback welcome but patches are preferred”

Addi3onal Ques3ons?

OPEN%NETWORK%LINUX%UPDATES% · PDF fileOCP Platform V2 Unified Device Tree Repository Unified...

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