Networking & Wireless forum

Question

Networking problem

by untouchable212 / February 24, 2016 6:12 AM PST

So i'm on a two floored building, with the main cable modem, and router being on the first floor, a while back i bought a very long cat 6 cable(100ft) i believe to connect to the top floor to a secondary router i was just using as an extender. It had been working fine for all this time until a few weeks ago.

Now it doesn't give connectivity to the router, i changed multiple routers upstairs with the same issue, and also changed the ports on the router on the first floor. Periodically the light will flash on the upstairs router, but without any internet connectivity. When i take the said router downstairs to test it on other cables it works flawlessly. So obviously there must be an issue with the cable right, but here's the hitch, when i plug in the cable directly to the upstairs desktop it works fine with perfect connectivity.

So i'm really stumped as to why the cable would work fine with a desktop but has issues with other routers setting up a network, does anyone have any idea why?

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Clarification Request
Is the second router a router (WAN port)?
by R. Proffitt Forum moderator / February 24, 2016 7:20 AM PST
In reply to: Networking problem

Or a WAP (LAN port)?

It matters. I offer no support when a second router is a router. Google "How to use a router as a WAP"

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Second Router is connected through its LAN port
by untouchable212 / February 24, 2016 8:30 AM PST

I had been using it as a WAP, it had been working for years, and then just stopped recently strangely. Connected through the LAN ports.

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In that case, reset it and set it up again.
by R. Proffitt Forum moderator / February 24, 2016 10:44 AM PST

If that fails, try another router or WAP. Annoying but they do fail.

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Tried that
by untouchable212 / February 24, 2016 11:05 AM PST

I've tried multiple routers on the 2nd floor without any success, so it can't be a device issue. Its just very perlexing why it connects flawlessly directly connected to a desktop, but fails when connected to a router. And as i previously stated, when i take the said routers downstairs and connect it to other shorter cables it works fine. So shouldn't that step alone identify it as a cable problem?

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I agree.
by R. Proffitt Forum moderator / February 24, 2016 11:25 AM PST
In reply to: Tried that

Time to try a new cable. Make sure it's factory made or tell me your pairing scheme.

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Signamax BC5E-4 Cat 5E UTP solid cable.
by untouchable212 / February 24, 2016 12:09 PM PST
In reply to: I agree.

Yea, the only issue is this size is expensive, and also difficult to get through the roofing again so i would hope to avoid if possible, i still don't understand why it would connect through the desktop or any laptop but fail with any other router device, doesn't seem to make sense.

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OK, that's the cable but pairs?
by R. Proffitt Forum moderator / February 24, 2016 12:59 PM PST

I've lost count of mispairing in home made cables. Anytime you change the device you might see a diff. After decades of networking, well, you will see this. That's what you carry some ready cables, routers and such.

Post was last edited on February 25, 2016 7:00 AM PST

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