* [Bridge] Introducing latency
@ 2005-05-04 18:07 Jeff Gercken
2005-05-04 18:38 ` Roman Chertov
2005-05-04 18:53 ` Stephen Hemminger
0 siblings, 2 replies; 3+ messages in thread
From: Jeff Gercken @ 2005-05-04 18:07 UTC (permalink / raw)
To: bridge
Does anyone know how I might introduce latency on the packets that I
bridge? I'm trying to develop a system for simulating wan links and
often bandwidth isn't as big an issue as delay, especially when talking
wireless (dot11 or satellite).
Thanks,
jeff
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Bridge] Introducing latency
2005-05-04 18:07 [Bridge] Introducing latency Jeff Gercken
@ 2005-05-04 18:38 ` Roman Chertov
2005-05-04 18:53 ` Stephen Hemminger
1 sibling, 0 replies; 3+ messages in thread
From: Roman Chertov @ 2005-05-04 18:38 UTC (permalink / raw)
To: Jeff Gercken; +Cc: bridge
Jeff Gercken wrote:
> Does anyone know how I might introduce latency on the packets that I
> bridge? I'm trying to develop a system for simulating wan links and
> often bandwidth isn't as big an issue as delay, especially when talking
> wireless (dot11 or satellite).
You can use the dummynet of the ipfw in FreeBSD to add delays/link
limitations/loss. You can also create a bridge with ipfw as well. I am
not sure what Linux has for traffic shaping.
Roman
>
> Thanks,
> jeff
>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Bridge mailing list
> Bridge@lists.osdl.org
> http://lists.osdl.org/mailman/listinfo/bridge
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Bridge] Introducing latency
2005-05-04 18:07 [Bridge] Introducing latency Jeff Gercken
2005-05-04 18:38 ` Roman Chertov
@ 2005-05-04 18:53 ` Stephen Hemminger
1 sibling, 0 replies; 3+ messages in thread
From: Stephen Hemminger @ 2005-05-04 18:53 UTC (permalink / raw)
To: Jeff Gercken; +Cc: bridge
On Wed, 4 May 2005 14:07:46 -0400
"Jeff Gercken" <JeffG@kizan.com> wrote:
> Does anyone know how I might introduce latency on the packets that I
> bridge? I'm trying to develop a system for simulating wan links and
> often bandwidth isn't as big an issue as delay, especially when talking
> wireless (dot11 or satellite).
You can use netem (part of recent 2.4 and 2.6 kernels).
More info at:
http://developer.osdl.org/shemminger/netem
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-05-04 18:07 [Bridge] Introducing latency Jeff Gercken
2005-05-04 18:38 ` Roman Chertov
2005-05-04 18:53 ` Stephen Hemminger
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