RE: Slow bandwidth
- From: "John Tolmachoff" <isalist@xxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 20 Mar 2003 07:25:17 -0800
If it is working on a Windows 2000 server running RRAS fine and then you
install ISA and it does not work properly, try decreasing the MTU size by 24
or 48.
John Tolmachoff MCSE, CSSA
IT Manager, Network Engineer
RelianceSoft, Inc.
Fullerton, CA 92835
www.reliancesoft.com
> -----Original Message-----
> From: Sachin Vaish (VGL) [mailto:sachin.vaish@xxxxxxxxxx]
> Sent: Thursday, March 20, 2003 7:09 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Slow bandwidth
>
> http://www.ISAserver.org
>
>
> Not yet.
>
> We have though used a standard Windows 2000 machine with no ISA installed
> and is perfect.
>
> There is something in ISA causing the slowdown. Whether it be the packet
> filters, broadcasting or spoofing I don't know.
>
>
> Sachin Vaish
> Vaioni Group Limited
> t: 0870 160 0650
> f: 0870 160 0651
> Please note our new address below:
> 32 Leslie Hough Way
> Manchester
> M6 6AJ
>
> -----Original Message-----
> From: John Tolmachoff [mailto:isalist@xxxxxxxxxxxx]
> Sent: 20 March 2003 15:00
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: Slow bandwidth
>
> http://www.ISAserver.org
>
>
> Interesting issue.
>
> Have you tested the exact setup but with ISA uninstalled? In other words,
> using the ISA server as a router using just RRAS and with ISA uninstalled.
>
> That would help to eliminate possibilities.
>
> John Tolmachoff MCSE, CSSA
> IT Manager, Network Engineer
> RelianceSoft, Inc.
> Fullerton, CA 92835
> www.reliancesoft.com
>
>
> > -----Original Message-----
> > From: Sachin Vaish (VGL) [mailto:sachin.vaish@xxxxxxxxxx]
> > Sent: Thursday, March 20, 2003 1:06 AM
> > To: [ISAserver.org Discussion List]
> > Subject: [isalist] RE: Slow bandwidth
> >
> > http://www.ISAserver.org
> >
> >
> > Tom,
> >
> > I have come across this DNS & MTU reasoning before. How do I know my DNS
&
> > MTU are configured correctly?
> >
> > Regards
> >
> > Sachin Vaish
> > Vaioni Group Limited
> > t: 0870 160 0650
> > f: 0870 160 0651
> > Please note our new address below:
> > 32 Leslie Hough Way
> > Manchester
> > M6 6AJ
> >
> > -----Original Message-----
> > From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx]
> > Sent: 20 March 2003 01:38
> > To: [ISAserver.org Discussion List]
> > Subject: [isalist] RE: Slow bandwidth
> >
> > http://www.ISAserver.org
> >
> >
> > Hi Sachin,
> >
> > I've heard this many times before, but I've never been able to figure
> > out what the issue was. As long as the MTU is correct on DSL lines, and
> > DNS is configured correctly, you should be in good shape.
> >
> > HTH,
> > Tom
> >
> > Thomas W Shinder
> > www.isaserver.org/shinder
> > ISA Server and Beyond: http://tinyurl.com/1jq1
> > Configuring ISA Server: http://tinyurl.com/1llp
> >
> >
> >
> > -----Original Message-----
> > From: sachin vaish [mailto:sachin.vaish@xxxxxxxxxx]
> > Sent: Wednesday, March 19, 2003 3:31 AM
> > To: [ISAserver.org Discussion List]
> > Subject: [isalist] Slow bandwidth
> >
> >
> > http://www.ISAserver.org
> >
> >
> > Hello
> >
> > Just wantye to know something.
> >
> > We have put around 100 people on the Internet. We have 2 x 2MB lines
> > aggregated and we are getting very good speeds across both lines (more
> > than 2MB from each line). We have not put anything before or after the
> > aggregator, which is RainConnect by the way sitting on a windows 2000
> > professional machine. So there is no firewall and there is no other
> > device. We are doing this as a test. The users may have their own
> > firewall
> > to protect themselves, but this is not our issue.
> >
> > Now as soon as we introduce ISA Server, everything slows down a lot.
> > What
> > can be doing this do you think? We have ISA Server setup in a workgroup
> > and not a domain. Firewall clients, MSN messenger and a series of other
> > ports for gaming, FTP access, etc have been open for certain users but
> > isn't really being utilised. We dont get more than 1MB from each line
> > anymore. i know we have locked down the ISA server a lot, which maybe
> > causing some problem. But is there somewhere we should be looking?
> >
> > Regards
> >
> > Sachin (again)
> >
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