Re: UDP multicast componet

From: Slobodan Brcin \(eMVP\) (sbrcin_at_ptt.yu)
Date: 10/25/04 

Date: Mon, 25 Oct 2004 12:19:30 +0200

Hi Zenexes,

I have been thinking about QoS but I do not know if it will help.
When fighting with broadcasts (not multicasts) on 1GB network with my protocol, I had to configure network adapter to stall switch
as long as possible if it can't receive data. This was to prevent data loss.
Later (trough experiments) I found out that I could have used UDP, with some limitations.
Do not length of complete packed added with UDP headers to exceed 1536 bytes or (size of Jumbo Frames) that you have set.
This way you will skip some UDP retransmission algorithms that are working awfully in ultra heavy load network environment. (I can't
remember if these were used with broadcast, but better safe than sorry).

Regards,
Slobodan

"zenexes" <zenexes@discussions.microsoft.com> wrote in message news:483A9B16-5713-4388-A87C-2FDBD3FDF55B@microsoft.com...
> emm... is confirm loss of data.. always keep loosing some data.. now i am
> tyring to add QoS componet in the xpe images.. wish me luck...
>
> "Slobodan Brcin (eMVP)" wrote:
>
> > Hi Zenex,
> >
> > Is this sporadic data loss?
> > If so then you might have to configure properties of network adapter, like Flow Control, etc.
> >
> > What network card do you use?
> > Do you have GUI to access network adapter properties? If not you can change default values in registry or in inf file.
> >
> > Regards,
> > Slobodan
> >
> > "zenexes" <zenexes@discussions.microsoft.com> wrote in message news:78F6D675-1561-402C-B4F1-BFFF583ACAAA@microsoft.com...
> > > hi guys, after adding "IP Router Monitor Library" and some testing, I am
> > > still having the packet lost problem... or more precise to said is data
> > > lost.... maybe some missing dependency on "IP Router Monitor Library" ? I
> > > have check using the check dependancy and fullfill all its needs... please
> > > advice,....
> > >
> > > regards.
> > >
> > > "KM" wrote:
> > >
> > > > zenexes,
> > > >
> > > > UDP will come as a part of TCP/IP stack ("TCP/IP Version 6" or "TCP/IP Networking" component). I don't think you can even
use it
> > as
> > > > a standalone component in XPe.
> > > > Make also sure youve got "IP Router Monitor Library" component.
> > > >
> > > > Otherwise tell us what network components are already included in your image.
> > > >
> > > > Use netstats.exe ("TCP/IP Utilities" or "TCP/IP Netstat Command") to display statistics on UDP datagrams.
> > > > Or use network perf. counters ("Network Performance Counters") to measure various UDP protocol parameters.
> > > >
> > > > And, of course, you can always use Network Monitor or Ethereal tool to watch on the network traffic.
> > > >
> > > > KM
> > > >
> > > > > hi, I have a program to receive udp multicast message. When i run this in a
> > > > > XP embedded machine it cannot receive all the data completely.
> > > > >
> > > > > The same program can accept all data correct in another PC running
> > > > > windows XP Pro.
> > > > >
> > > > > Any idea what's the componet require ?
> > > >
> > > >
> > > >
> >
> >
> >

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