Re: network troubleshooting

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From: Jonathan Lotman [MSFT] (a-jonlot_at_online.microsoft.com)
Date: 10/09/04 

Date: Sat, 09 Oct 2004 04:51:34 GMT

There is not any tool built into SBS to do this sort of analysis, you would
need to get a 3rd party protocol analyzer to get an accurate assessment of
the network. Even the FTP test is only a very rough indicator of the
network throughput between a single client and the server. Other things
that may need to be taken into consideration:

Is the latency you experience consistent, or does it only occur during
certain parts of the day?
If you just attempt to copy files between two clients, is the latency still
present?
Does the server experience the same latency when browsing the web?
If so, is ISA Server installed, or are you just using the RRAS firewall?
Also, just out of curiosity, what brand of gigabit NICs are being used?

Thank you,
--------------------------
Jonathan Lotman
Microsoft Online Support Engineer

Microsoft Corporation
Get Secure! - www.microsoft.com/security

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--------------------
| From: "Param R." <pr@nospam.com>
| References: <ePLdvnUrEHA.4008@TK2MSFTNGP14.phx.gbl>
<U7AJIlXrEHA.752@cpmsftngxa06.phx.gbl>
| Subject: Re: network troubleshooting
| Date: Fri, 8 Oct 2004 18:43:22 -0500
| Lines: 67
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| Newsgroups: microsoft.public.windows.server.sbs
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| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| Is there anyway I can test the line speed without setting up ftp? I dont
| have FTP Service setup on the SBS Server and I dont want to break
anything
| by installing it. Any ideas?
|
| TIA!
|
| "Jonathan Lotman [MSFT]" <a-jonlot@online.microsoft.com> wrote in message
| news:U7AJIlXrEHA.752@cpmsftngxa06.phx.gbl...
| > The netmon tool that comes with SBS2003 can be useful isolating network
| > issues. However, I would first recommend bringing the gigabit NIC
down
| > to
| > 100Mb Full Duplex, as well as going into the properties of the NIC and
| > disabling any jumbo frame and offloading features. As far as testing
| > line
| > speeds, a simple test might be to set up an FTP site on the LAN
interface
| > of the server and then transfer a large file to it and see what the
| > sustained transfer rate is. Externally, there are a number of sites
that
| > can give you a line speed test on the WAN side, but I suspect that the
| > issue is more in your local network than with your ISP, based on your
| > description.
| >
| > Thank you,
| > --------------------------
| > Jonathan Lotman
| > Microsoft Online Support Engineer
| >
| > Microsoft Corporation
| > Get Secure! - www.microsoft.com/security
| >
| > =====================================================
| > When responding to posts, please "Reply to Group" via
| > your newsreader so that others may learn and benefit
| > from your issue.
| > =====================================================
| >
| > --------------------
| > | From: "Param R." <pr@nospam.com>
| > | Subject: network troubleshooting
| > | Date: Fri, 8 Oct 2004 10:17:31 -0500
| > | Lines: 17
| > | Newsgroups: microsoft.public.windows.server.sbs
| > |
| > | Hi all, we are experiencing some network latency in our SBS network
| > | environment. The SBS server has 2 NICS as follows:-
| > |
| > | Internal GIGABIT Nic plugged into gigabit switch where other PCs
plugin.
| > | External 10/100 NIC plugged into linksys router for gateway to
internet.
| > |
| > | Our users are experiencing very slow internet browsing and also slow
| > file
| > | copy times over the network. We have contacted our ISP and they came
| > back
| > | with our line is OK.
| > |
| > | Are there any free tool out there that I can use to monitor the
network
| > to
| > | see what is going on? Test line speeds between a particular client and
| > the
| > | server etc?
| > |
| > | TIA!
| > |
| > |
| > |
| >
|
|
|

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