Confusing Network Issue

February 16, 2011 at 16:41:47
Specs: Vista, 3gb / 1.5gb
I’m hoping someone can walk me through what’s going on in this particular situation. I’ve done networking with 200 to 300 computers but this situation has me baffled, and it only involves 3 computers.

This is a small office set up with Vista as the OS:

Players and Parts are:

Comcast Cablebox/Router (In Front Office)
DLink Router (In Back Office)
Locked Pastor Office (Back Office)
PC1 (with shared folder)

PC1 is located in an office in the front of the church and is connected directly to the Comcast Cablebox. PC1 shares a finance folder that PC2 needs access to. When looking at the network settings, PC1 sees no other computers. And is labeled as being in "Network 3."

PC2 is located in an office in the back of the church. PC2 needs to get files from the shared folder on PC1. PC2 could no longer see PC1 or get internet access for some reason, BUT could see PC3. PC2 has an Ethernet cable connected into the network card, and a wireless card (disabled). Viewing the “network” from PC2; PC2, PC3 and the DLINK Router can be seen.

PC3 is in the locked Pastor’s Office. Also in that office is a DLINK router. I haven’t been able to get into that office to see what’s connected.

In the office where PC1 is, there is the Comcast Cablebox. PC1 and a Printer are connected to this Box by ethernet cable. I noticed that it had an Ethernet cable that was disconnected. So, I plugged the cable back into the box, and PC2 (in the office in the back) can now get the Internet. BUT, PC2 cannot get the shared file on PC1. The cable connected to PC2’s network card goes into the wall and then into the Locked Office below it. So I can’t tell if that cable is connected directly to the Comcast box or connected to something else in the Locked Office.

On PC2, there a DLink connection “with limited connectivity” in addition to a LAN connection. If I disconnect the DLink , PC2 can no longer see PC3 or the internet. If I disconnect the Ethernet cable, PC2 can no longer get the internet, but can still see PC3. PC2 also has this installed ... “Network Bridge – MAC Bridge Mini Port.” I read that the “MAC Bridge Mini Port” is suppose to be a software bridge for a computer with two cards. BUT if the wireless is disabled why is this necessary?

I'm not sure who set all of this up, nor do I see the purpose. It would seem easier, to have just connected the offices in the back with a switch, and added all to a work group.

Does any one understand what is going on here?

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February 17, 2011 at 06:50:59
Does any one understand what is going on here?

People who didn't know what they were doing set up a network? How about getting the keys to that office and doing it correctly?

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February 17, 2011 at 06:59:57
Comcast Cablebox

without a router you can only get one pc on the internet
might want to followup with your post at tech support forum

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February 17, 2011 at 07:07:52
Send us the IPCONFIG /ALL for each PC. It sounds like they are on different subnets.

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Related Solutions

February 17, 2011 at 11:47:39
The Comcast cable box IS also a router.

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February 17, 2011 at 14:06:58
Is it a motorola? Does it have 4 ethernet ports? I have comcast and have for years. They supply a modem not a router unless you got a package that also included a router.

Any idea why the pastors office has a router? Does that office have a internet connection?

This should be a simple setup

I suspect someone was confused about networking and for security reasons setup multiple independent networks [guess they didn't know about firewalls] which explains the pastor having a router and the "bridged" connection on PC2 [possibly going to the pastors router?]

Have you had a chance to talk to the pastor or get some history on this network?

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