It's just ordinary Ethernet category 5 cabling.
<http://en.wikipedia.org/wiki/Category_5_cable>
The are 4 pairs of "twisted pair" wires with each pair connected to 2
pins for 8 pins total. Slower Ethernet connections (100 megabits or
slower) require 2 pairs and faster ones (1000 megabits) require all 4
pairs. These are just send receive pairings. There are no dedicated
pins/wires that perform specialized tasks. If they are communicating at
all they should be communicating for everything.
Chuck Norcutt
On 7/31/2011 8:30 PM, Jim Nichols wrote:
> Chuck,
>
> I have been reading all of this, but am too ignorant to make much of a
> contribution. I'm not too sure what type of cables you are using, but, if
> they are multi-pin, then different functions can use different paths. Could
> there be one bad pin or conductor that is at the bottom of this problem?
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: "Chuck Norcutt"<chucknorcutt@xxxxxxxxxxxxxxxx>
> To: "Olympus Camera Discussion"<olympus@xxxxxxxxxxxxxxxxx>
> Sent: Sunday, July 31, 2011 7:15 PM
> Subject: Re: [OM] Some new data points, was: XP Printer advice.
>
>
>> Not easily done since the cables are of dramatically different lengths
>> with one of them routed through the wall. But I can do it by moving the
>> laptop into the office and using a different cable. Just not now since
>> Mrs. laptop user has had enough of my debugging exercises on her machine
>> today.
>>
>> But, I really fail to see how the cables could be involved when each
>> machine can ping the router.
>>
>> Chuck Norcutt
>>
>>
>> On 7/31/2011 7:18 PM, Scott Gomez wrote:
>>> Switch the cables between the two machines and see if the ping results
>>> follow the cable. That would indicate it might be a bad cable.
>>>
>>> On Sun, Jul 31, 2011 at 14:43, Chuck Norcutt
>>> <chucknorcutt@xxxxxxxxxxxxxxxx>wrote:
>>>
>>>> Under Windows I reset the TCPIP stacks on both machines according to the
>>>> fixit article Jez referenced below. Absolutely no change.
>>>>
>>>> But then I finally recalled (I'm a little slow) that both of these
>>>> machines have Linux installed. So I rebooted into Linux on both
>>>> machines and tried pinging from Linux to Linux. I get exactly the same
>>>> results as Windows. The laptop can ping the router but can't ping the
>>>> desktop. The desktop can ping both.
>>>>
>>>> So, what does this mean? Does it mean there's a hardware problem or
>>>> does it mean that Windows has diddled some registers in the network
>>>> cards that Linux is simply using as is?
>>>>
>>>> Chuck Norcutt
>>>>
>> --
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>
>
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