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 From:  "kjetilla" <kjetil underscore larsen at broadpark dot no>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  SV: [m0n0wall] Re: Traffic shaping ViOP over a IPsec link
 Date:  Wed, 29 Sep 2004 19:15:18 +0200
I'm using 1Ghz PC's at boths sites, same sw version and both using 3com nics
and minimum 128Mb ram.

Transferrate is close to maximum wan bandwith when doing filetransfer
between sites. 
I do not think HW is the root to this problem.


> -----Opprinnelig melding-----

> Sendt: 29. september 2004 11:13
> Til: m0n0wall at lists dot m0n0 dot ch
> Emne: [m0n0wall] Re: Traffic shaping ViOP over a IPsec link
> 
> Are you using m0n0 on both ends.  I've had some similar 
> problems where I have m0n0 on one end and a Netopia router 
> handling the other end of the tunnel. The hardware simply 
> couldn't handle the encryption / decryption of the link.
> 
> gramels wrote:
> > keep in mind, that voip over vpn has some pitfalls in 
> respect tu mtu 
> > size etc... I had some bad expierences here independent of the 
> > available bandwith. I would check for that first. What are 
> the jitter 
> > values on jour fones? (on cisco 79xx with sip image press 
> the info key 
> > twice to see iinfo about jitter for ongoing calls)
> > 
> > 
> > On Mon, 27 Sep 2004 21:19:28 +0200, kjetilla 
> <kjetil underscore larsen at broadpark dot no> wrote:
> > 
> >>My scenario:
> >>
> >>Using m0n0 1.1 CD/Floppy on two standard PC :
> >>
> >>VoIPgateway ---- Lan1 --- m0n01 ---- internet ---- m0n02 ----Lan2 
> >>----- VoIP Phones ( 10 pcs)
> >>
> >>IPsec is used to connect lan1 with lan2. Working perfect!
> >>
> >>Traffic shaping is enabled and setup was done using the wizard.
> >>
> >>It is working very well when traffic is coming to/from the 
> internet. 
> >>VoIP quality is very good.
> >>
> >>But when traffic is coming thru the IPsec channel between the two 
> >>m0n0's VoIP quality drops to unacceptable level and becomes 
> unusable.
> >>
> >>Is ViOP traffic wrapped into ESP before the traffic shaper starts 
> >>processing and therefore it cannot differenced between any 
> combos of 
> >>ports / source /target IP's within the ESP package?
> >>
> >>I've tried to use traffic shape rules on LAN side instead of WAN, 
> >>without any luck, but I might overlooked something..
> >>
> >>Is there any way to get this to work? Any suggestions are welcomed.
> >>
> >>Thanks, Kjetil
> >>
> >>
> 
> 
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