[nflug] Help- At a Loss

Cyber Source peter at thecybersource.com
Mon Aug 11 23:19:13 EDT 2008


lol, freakin sales guys, what a maroon (bugs bunny)...

justin.bennett at dynabrade.com wrote:
>
> Thanks guys, after hours of troubleshooting with guys who's native 
> language is not english, I had them pull every network connection from 
> the switch except the servers, and plug them back in one at a time, 
>  It wound up being a drop that ran to a Dlink switch in an area where 
> salesguys plug in their laptops, as it turns out one of them 
> apparently plugged both ends of a patch cable into the DLink switch...
>
> Thanks again for the replies.. :)
>
> Justin
>
>
>
>
> *Robert Meyer <meyer_rm at yahoo.com>*
> Sent by: nflug-bounces at nflug.org
>
> 08/11/2008 02:18 PM
> Please respond to
> nflug at nflug.org
>
>
> 	
> To
> 	nflug at nflug.org
> cc
> 	
> Subject
> 	Re: [nflug] Help- At a Loss
>
>
>
> 	
>
>
>
>
>
> Another possibility is that you have a mix of half duplex and full 
> duplex links in your environment.  This causes FCS errors that cause 
> lots of retransmissions.  This is especially bad between switches.  If 
> your switches are talking to each other in full duplex but the 
> machines are half, bad things happen.  It's the same problem if you 
> have full duplex machines and half duplex switches...  Give that a check
>
> Cheers!
>
> Bob
>  
> --
> "When once you have tasted flight, you will forever walk the earth 
> with your eyes turned skyward, for there you have been, and there you 
> will always long to return."
> --Leonardo da Vinci
>
>
> ----- Original Message ----
> From: Cyber Source <peter at thecybersource.com>
> To: nflug at nflug.org
> Sent: Monday, August 11, 2008 2:02:30 PM
> Subject: Re: [nflug] Help- At a Loss
>
> The first thing that comes to mind are these;
> 1. Duplicate MAC address on the network ?
> 2. Bad termination of an RJ45?
> 3. Some windows box gone hay wire?
> _
> __justin.bennett at dynabrade.com_ <mailto:justin.bennett at dynabrade.com> 
> wrote:
> >
> > Hey guys,
> >
> >        This is a little off topic, but I need some help. I'm
> > experiencing some packet loss on an internal network at one of our
> > remote locations. I don't understand why, It's network wide, if I try
> > to ping a windows server from a local desktop, I'll loose between
> > 6-19% of the packets, If I ping one server from another, or desktop to
> > desktop, I get packet loss, so bad it's affecting the performance of
> > the network to the point where DNS lookups fail and sites can't be
> > reached. I thought it was the network switch there, but I had him
> > replace it with a new one, (different brand) same problem. Is there
> > anything that may be causing this? I'm looking for thoughts at the
> > moment. Basically it's windows XP clients doing DHCP to a Linux box
> > running samba as a file server, and the a Windows 2003 server as their
> > application system.
> >
> > Thanks
> > Justin
> >
> > ------------------------------------------------------------------------
> >
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