How to implement the wavevideo plugin in an msr router
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How to Implement the WaveVideo Plugin in an MSR Router. WaveVideo. Example of application specific congestion control Implemented as: Video Encoder Router Plugin Video Decoder Current implementation is in the Crossbow framework Uses about 3 Mb/s for video

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How to Implement the WaveVideo Plugin in an MSR Router

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How to implement the wavevideo plugin in an msr router

How to Implement theWaveVideo Pluginin an MSR Router


Wavevideo

WaveVideo

  • Example of application specific congestion control

  • Implemented as:

    • Video Encoder

    • Router Plugin

    • Video Decoder

  • Current implementation is in the Crossbow framework

  • Uses about 3 Mb/s for video

  • Requires congestion to demonstrate its usefulness


Current wv assumptions

Current WV Assumptions

  • It will be given some indication of:

    • Its target rate in bits/second

    • Does not actually use any indication of congestion being present

  • Currently works with DRR

    • Sends a PCU message to the crossbow packet scheduler for interface to get its target rate.

  • If WV behaves, no one else will drop its packets.

    • WV plugin needs to be the only place where WV packets get dropped

    • Relies on DRR dropping packets from the longest queue

      • Each flow corresponds to a queue

      • All flows share equally

      • Therefore if WV stays under its share and there is congestion it will be because there is another longer queue


How to implement the wavevideo plugin in an msr router

X.1

Z.1

IP Options

SP1

SP2

...

Out PN 0

SPN

Out PN 1

...

Out PN M

Ingress SPC, No FPX

SW Interrupt Priority

Y.1

Do we have any

Packet Scheduling

on Ingress Side?

Will WV packets

be dropped if there

is congestion?

W.1

X.2

Y.1

Local Resource

Manager (swint)

Z.2

PCU Framework

HW Interrupt

interrupt

APIC

Exact Match

(add SID)

Route Lookup (Add Output VIN)

Replace IntraShim

with IntgerShim

APIC

IP opt?

SID?

APIC Buffer Management

Insert IntraPort Shim

(Add Input VIN)

DQ

hi frequency

interrupt (100us)

CP command

processor

Command (AAL0)

reply to CP

CP commands

In/Out (AAL0) DQ

Broadcast Cells


How to implement the wavevideo plugin in an msr router

X.1

Z.1

Manage

In P1

In P2

...

Out NH 0

In PM

Out NH 1

...

Out NH N

Egress SPC, No FPX

SW Interrupt Priority

Y.1

W.1

X.2

Y.1

Is this Packet Scheduling

on Egress Side per flow?

If not, how can WV know that it behaving will make a difference?

Local Resource

Manager (swint)

Z.2

PCU Framework

HW Interrupt

interrupt

Exact Match

(add SID)

Determine Out VC Remove Shim

DRR

Service

APIC

APIC

SID?

APIC Buffer Management

Insert IntraPort Shim

(Add Input VIN)

DQ

drr thread

CP command

processor

Command (AAL0)

reply to CP

CP commands

DQ

Broadcast Cells

hi frequency

interrupt (100us)


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