Cable/Dial-up Modems - TCP/IP Conflicts? [Archive] - SpeedGuide.net Broadband Community

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clevelandtexas
03-13-02, 11:43 AM
First my hardware setup:

I'm using RoadRunner service in which I have my cable modem connected to a switch and then my NIC connected to the switch. Likewise I have my second computer connected to the switch though its NIC so both computers can access RoadRunner. This works great.

I also have a 56k dial-up modem attached to my phone line that I use for faxing and to dial-in into my work computer using PC Anywhere.

Whenever I dial to work through my 56k modem my RoadRunner access slows to the speed of the 56k modem. This occurs with any piece of software I'm using like my browser, e-mail, etc. When I disconnect my 56k modem connect suddenly I go back to my normal and fast RoadRunner speeds.

PC Anywhere uses TCP/IP to connect to my work computer. So I imagine that somehow my system can't distinguish between two separate TCP/IP connections where one is my RoadRunner connect and the other being my 56k modem.

I'm currently running this on Win XP. But... I'm running dual boot so I can go back to Win 98. The same problem occurs in Win 98.

In Win 98 I have a second program, LapLink, in which I can dial in to work. It does not use a TCP/IP connection. As a result when I'm dialed in using LapLink my RoadRunner runs at full speed.

What I can deduce is that although I have two physically separated connections that somehow TCP/IP (Windows) is going bananas and mixing the lot to reduce my RoadRunner speed to that of the 56k modem until I break the 56k modem connection.

Please help. Thanks.

:( :( :(

glc1
03-13-02, 03:24 PM
This phenomena is the fault of Windows defaulting to the dial-up connection when it's active and ignoring your RR connection.

Does LapLink work in XP?

clevelandtexas
03-13-02, 04:11 PM
No, my version of LapLink is not Win XP compatiable and I have to run it out of Win 98 which is not a real big deal since I can have full speed Internet. I guess I need to get LapLink for Win XP.

Back to the phenomena... I guess you are saying that it is another of those wonderful undocumented features that we all have to live with? And to think he is still the richest man in the world. thanks:)

glc1
03-13-02, 04:27 PM
There might be simular software out there that works in XP, not sure. Who makes LapLink?

Aside from faxing, are you just trying to access your company's LAN from home? If so, you migh be able to setup your RR connection to do so. That would surely beat dial-up.

YeOldeStonecat
03-13-02, 04:29 PM
Can you change your protocols for dialing into work, and PCA. I haven't come across a setup to play with this, but I'm guessing you have your WAN to cable set to obtain automatically. I'm wondering if having a router, so you can hard code your LAN IP, gateway, and DNS, instead of DHCP. When you connect to the office, you're getting the DHCP info from your office, over-ruling your cable's DHCP?

Dial up networking connection...uncheck "Use remote gateway"?

clevelandtexas
03-13-02, 04:42 PM
I'm using a switch and not a router so I can't try the router stuff.

But I'll try by unchecking "Use remote gateway" in the dial-up settings.

thanks

clevelandtexas
03-13-02, 07:34 PM
Originally posted by YeOldeStonecat
Can you change your protocols for dialing into work, and PCA. I haven't come across a setup to play with this, but I'm guessing you have your WAN to cable set to obtain automatically. I'm wondering if having a router, so you can hard code your LAN IP, gateway, and DNS, instead of DHCP. When you connect to the office, you're getting the DHCP info from your office, over-ruling your cable's DHCP?

Dial up networking connection...uncheck "Use remote gateway"?

I tried the uncheck "Use remore gateway" on the dial-up connection. It worked! Thanks a lot! :D :D :D

YeOldeStonecat
03-14-02, 01:17 PM
Glad that worked, that rang a bell because a few setup's that I've done I can dial RAS into the main network, then surf the web through the DSL router on the main network....from the remote site...in that case...using the "remote gateway". Figured the opposite may clear your problem.

clevelandtexas
03-14-02, 01:44 PM
Originally posted by YeOldeStonecat
Glad that worked, that rang a bell because a few setup's that I've done I can dial RAS into the main network, then surf the web through the DSL router on the main network....from the remote site...in that case...using the "remote gateway". Figured the opposite may clear your problem.


Unfortunately it was not a complete solution. I can do the dial-up with my modem and make the connection to my office with the "remote gateway" turned off so that my 56k modem and LAN modem are separate as Windows is concerned and I can use RoadRunner at full speed. The kicker is when I click on PC Anywhere to make its final connection to my office it never completes. The PC Anywhere connection needs "remote gateway" turned on. Yech! Is there anyway I can "hard code" my office's gateway somewhere in my settings so PC Anywhere can work with "remote gateway" turned off?

YeOldeStonecat
03-14-02, 02:35 PM
Ah yes...PcA checking your gateway to get there also...so, heh, uhm....

I've had issues lately with PcA and TCP/IP only, and using NetBIOS instead has cured my issues...although they were more performance and "PcAnywhere black screen" related, not pure connection.

So what I'm getting at, try using NetBIOS on host and remote, instead of TCP/IP?