10Mbps to 100Mbps.... HUH?!

I am now having another issue with a problem that was resovled (thanks to all you great AO members out there) through a post I made earlier this week. I'm calling on your great wisdom again.
I recently had the integrated Ethernet port go out on one of my machines, I had a couple of extra Ethernet NICs laying around so I threw it in and disabled the... well... disabled one:)... seemed to fix the problem. Now, although the Internet seems to run fine, I have some application that connect to the Mainframe that run very slow from that computer.
I'll give you all the info I have now: XP SP2, I tried a RealTek and NetGear 10/100 NICs, with the latest drivers.
This is something else I don't understand... When I put the NIC in another comp, it runs at 100Mbps. When I put it in the other, it shows it running at 10Mbps. What?!
I don't understand!

Do you have it plugged into a hub or a switch?

If the other side of the line is only operating at 10Mbps, then thats all you're going to get.

Could be that the other computer is connected to a different switch?

Try changing hub/switch ports and see if that makes a difference.

Yeah... You were correct. The reason it was running at 10M was because it was going through the hub. I changed it to the switch and it is now running at 100M. Problem sovled?? NO! I thought that the applications were being slowed down because it said it was running at 10, but when I switched to the switch at 100Mbps the application was still running extremely slow.
So, I guess it doesn't matter if it's running at 10 or 100. Something else is causing this particular application to run very slow. Any ideas? I forgot to mention earlier... each computer is Telneting in the Mainframe. Does that help?

This is a link to the old post that might help.

Are you saying that the application that is running slow is run over telnet, and that its fine on other machines?

What app do you use to telnet with?

Correct, the app is running over telnet, and it's running fine on all over computers.

I'm not sure what you mean by the app I use to telnet with. Could you clarify a little? After all, I am a newbie.

Do the other machines use telnet too??

Do you have something monitoring you connections on your WS??

Other network apps??

try a different cable...maybe a break or kink?

is your NIC the same brand as everyone elses?

MLF

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Originally posted here by morganlefay
Do the other machines use telnet too??
Do you have something monitoring you connections on your WS??
Other network apps??
try a different cable...maybe a break or kink?
is your NIC the same brand as everyone elses?
MLF

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Yes, all other computers use telnet.
Excuse my ignorance... What's my "WS"?
It's the only network app running on this computer.
I tried three different brands of NICs.
I'll go try a different cable right now.
Thanks

WS=Work Station

MLF

I just look up the status of the connection manually. No special software or monitor.

Assuming this is a MS machine...

I have seen communication issues when machines are at different service pack levels??

Maybe when you installed the NIC it over wrote some dll...try removing and reinstalling TCP\IP...and then Service pack the machine again....

Used to work with NT....

MLF

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try removing and reinstalling TCP\IP...and then Service pack the machine again....

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A little help with this please...
It's an XP SP2 machine.

Lets make sure its not hardware first...did you repalce the cable???

Can you get a really long cable (I keep a spare for this) and try another wall port or move the machine??

Did you try another port on your switch\hub?

Are you on the same switch hub that the other WS are using??

Do you have any other protocols installed???

You said you tried 3 different NICs...????

MLF

did you repalce the cable??? Yes.

Can you get a really long cable (I keep a spare for this) and try another wall port or move the machine?? Yes.

Did you try another port on your switch\hub? Yes.

Are you on the same switch hub that the other WS are using?? Yes.

The reason why I think it is hardware is because, like I said earlier, the port when bad on my integrated NIC so I put in the new NIC and that's when the problem began.

Is the other NIC still showing in device manager???

Sounds like a binding issue....

you may need to download XP SP 2....unless it was integrated with your install disk?

Go to MS downloads and use the Administrator options on the left and manually download XPSP2.....unless you have it on a disk\server somewhere

Right click your lan connection in Network connections and remove all services and protocols....write down ALL your settings\services etc before you do this!!!!!

You will may need the LOCAL ADMIN access to complete this ...so make sure you have\reset the local admin password....just incase ;)

reboot> logon...either with your account...or the local admin account

then add all the protocols, services and settings back...
reboot.

Then run the service pack...reboot and get all your updates......

May work??

MLF

How do I run the service pack from the CD?

You may want to go into the properties for your network card, either through Device Manager or Network connections. Click the Configure button and choose the Advanced tab. Under that there should be settings for Link Speed and Duplex. The are probably set to auto config or factory default. Try setting it to 100 Full Duplex and see if it is any better, if not try one of the other combinations.

No change whatthe.

How do I run the service pack from the CD?

If SP2 was integrated with the original install disk eg XP Pro with SP2...AFAIK you do not need to rerun the Service Pack again...just remove TCP\IP and reinstall.

The Service Pack code is already include in your install and the cabs.

I would check for updates though after you do this...just incase.

MLF

Did you just reinstall this machine? I think I read that in the other thread.

Are you the original one that setup the telnet connections and installed the computers? What I'm getting at is, might there be some special settings that need to be configured for you to properly telnet to the server?

As far as the telnet program, are you using like, secureCRT or some program like that, or are you just using the built in windows telnet program?

Yep, did this, still no change.

We have an outside vendor that wrote the software that's running so slowly. Perhaps I should give him a call and see if he's seen this before.

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Did you just reinstall this machine? I think I read that in the other thread.
Are you the original one that setup the telnet connections and installed the computers? What I'm getting at is, might there be some special settings that need to be configured for you to properly telnet to the server?

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Yes, I was the one that installed the computer and set up the Telnet connection. I checked the settings and they are all correct (the same as everyone elses).

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As far as the telnet program, are you using like, secureCRT or some program like that, or are you just using the built in windows telnet program?

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I suppose I'm just using the Windows Telnet program... l really don't know the difference.

I finally got this issue resloved thanks to all of your great input. The post explaining the really issue and resolution can be found here.
Thanks again for all your help!