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Author TCP/IP Dropout (Read 47927 times)
macdude888
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on: March 13, 2025, 15:38

Hello. When using the internet over ethernet on my PB3400 whether in iCab or Netscape, I can navigate to the home page of a site just fine e.g. system7today.com. However, trying to navigate to subsequent pages e.g. the Applications page on system7today.com the connection drops out. I can see on the router that the lights are no longer on. I have to restart the computer for it to make a new connection. Does anyone have any suggestions?
68040
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Reply #1 on: March 13, 2025, 17:01

I'm not aware of any sort of HTTP traffic, that could disable a router.

May I suggest flaky wiring or radio interference? Best would be to enable the router's logging facility and then start your error search there.
macdude888
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Reply #2 on: March 13, 2025, 18:06

I don't think it's the http traffic controlling the router. The lights on the router indicate 1) that there is a link and 2) that there is traffic over that port. These lights illuminate upon the first request for the URL, but then turn off subsequently as if the physical link is broken. That's why I think it has something to do with the way the OS is handling the TCP/IP stack at this point. In the TCP/IP control panel with Administrator mode enabled, I have selected to keep the connection active always rather than only when needed. Still no luck. I'm thinking perhaps I should repost this under the OS forum. Also wondering if OpenTransport is installed and causing a MacTCP conflict.
68040
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Reply #3 on: March 13, 2025, 18:11

What OS version are you using and what version do the TCP/IP extensions have? Please check in the Extensions folder.
Also, are you using MacTCP or OpenTransport?
ovalking
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Reply #4 on: March 15, 2025, 15:47

Hmm, sounds odd.

Suggest you ping your router, then monitor while you do stuff. See what activity stops the pings.

Are other network equipment / router ports working ok?

>In the TCP/IP control panel with ...
>Also wondering if OpenTransport is installed and causing a MacTCP conflict.

Do not use combinations of Open Transport and classic networking. Use the Network Software Selector to switch between the two.k
68040
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Reply #5 on: March 15, 2025, 17:11

I would also point out that using different versions of OpenTransport extensions together can cause problems. OT did have several releases coming out, before it went "stable" and as I encountered you can get those easily mixed up.

On top of that, sometimes the same extension comes under different names and then they all end up in the same Extensions folder.
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