Re: Very Strange Issue

From: Farrukh Haroon (farrukhharoon@gmail.com)
Date: Thu Aug 28 2008 - 11:28:17 ART


" Users in site B keep experiencing slowness and loss of connectivity to all
services,(email, network drives, surfing)."

:P

On Thu, Aug 28, 2008 at 5:23 PM, Joseph Brunner <joe@affirmedsystems.com>wrote:

> With 100 byte pings?
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Farrukh Haroon
> Sent: Thursday, August 28, 2008 10:20 AM
> To: groupstudy email
> Cc: Joseph Brunner; ccielab@groupstudy.com
> Subject: Re: Very Strange Issue
>
> Could be a MTU related issue.
>
> Regards
>
> Farrukh
>
> On Thu, Aug 28, 2008 at 5:15 PM, groupstudy email
> <groupstudy@gmail.com>wrote:
>
> > Actually, I misspoke. The users are all thin clients. They are using
> > citrix.
> > Thanks
> >
> > On Thu, Aug 28, 2008 at 10:13 AM, Joseph Brunner <
> joe@affirmedsystems.com
> > >wrote:
> >
> > > >Users in site B keep experiencing slowness and loss of connectivity to
> > all
> > > >services,(email, network drives, surfing).
> > >
> > > Let me get this straight...
> > >
> > > You are mapping users to "shared drives" over a 768k line, and
> > >
> > > YOU ARE WONDERING WHY ITS SLOW???
> > >
> > > it would be slow over a T-1!!!!
> > >
> > > First, get more bandwidth... cifs & netbios are VERY CHATTY
> protocols...
> > >
> > > more chatty than your girlfriend telling you about her day at work...
> > >
> > > They need lots of bandwidth and or a Riverbed appliance to work well on
> > > slow
> > > speed wans (i.e. slow speed under 10Mbps), and even then they are not
> > > perfect. On 768K they would be absolutely Les Miserable...
> > >
> > > I ran a 50+ site wan with slow speed links using all these services,
> > email,
> > > fs, etc...
> > >
> > > >Two pings work, three don't, two don't, three do.
> > > > This is true for any windows server in the network.
> > >
> > > Perhaps complete saturation of the line... do your users run limewire,
> > etc.
> > > and download and share mp3's? Time to break out wireshark... here we
> go
> > >
> > > Once we do that, lets look at the setup of this vpn to make sure its
> > good.
> > > Post your configs (hub and site b router) for us. We'll look at.
> > > -Joe
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > > groupstudy email
> > > Sent: Thursday, August 28, 2008 9:57 AM
> > > To: ccielab@groupstudy.com
> > > Subject: Very Strange Issue
> > >
> > > Hello All,
> > > I have a VPN tunnel between two cisco routers (site A hub side, site B
> > > remote side). The remote side is a 768K DSL line.
> > >
> > > Users in site B keep experiencing slowness and loss of connectivity to
> > all
> > > services,(email, network drives, surfing). While troubleshooting, we
> > issue
> > > pings from their machines to the various servers in remote networks.
> > Ping
> > > results are inconsistent. Two pings work, three don't, two don't,
> three
> > > do.
> > > This is true for any windows server in the network.
> > >
> > > Pings to any Cisco device from the same user machine work completely.
> No
> > > packet loss at all.
> > >
> > > I have never seen this before. Any idea why this happens?
> > >
> > > I have remote connectivity to all devices at site B, it's just slow.
> > >
> > > Thanks!
> > >
> > >
> > > Blogs and organic groups at http://www.ccie.net
> > >
> > > _______________________________________________________________________
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> >
> >
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> >
> > _______________________________________________________________________
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>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
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>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
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