Quick question about RJ45 cables

MY current setup: (read from top to bottom, I'm hopeless at ASCII
drawing)

ISP
Antenna on roof
10 meters of RGC cable
Linux Box with lotsa nice filters
8 port switch
My PC and a wireless router (netgear WGR614v9)
The wireless router feeds my son's and my wife's PCs, which have USB
and PCI wireless cards. My PC plugs into the switch.

I use a "straight cable" with all these connections. I once tried
plugging the netgear directly into my Linux box,using the stock cable
it came with, but it did not like that.

Could I use a cross-over cable between the linux box and the wireless
router, and then just plug my PC into one of the RJ45 slots in the
router ? That would eliminate the 8 port switch, which is starting to
give me startup problems.

Or would that damage something ?
TIA

"Shadow" <Sh@dow> wrote in message
news:(E-Mail Removed)...
> MY current setup: (read from top to bottom, I'm hopeless at ASCII
> drawing)
>
> ISP
> Antenna on roof
> 10 meters of RGC cable
> Linux Box with lotsa nice filters
> 8 port switch
> My PC and a wireless router (netgear WGR614v9)
> The wireless router feeds my son's and my wife's PCs, which have USB
> and PCI wireless cards. My PC plugs into the switch.
>
> I use a "straight cable" with all these connections. I once tried
> plugging the netgear directly into my Linux box,using the stock cable
> it came with, but it did not like that.
>
> Could I use a cross-over cable between the linux box and the wireless
> router, and then just plug my PC into one of the RJ45 slots in the
> router ? That would eliminate the 8 port switch, which is starting to
> give me startup problems.
>
> Or would that damage something ?
> TIA
>

BTW - what does your rooftop antenna and RG cable plug into ?
Where and how is the ISP being accessed - ie - logged onto ?

For the router -
just wondering if, how, or where the Router WAN port is being used - in this
scenario...

The normal Ethernet cable should have worked directly from router 4-ports to
Linux box (PC)
just like it works with any other PC connected to one of the Ethernet RJ45
4-port switch....

Cross-over cables are used when the Ethernet ports are not auto-sensing MDI
ports
to flip the Transmit & Receive pairs...when used to cascade inter-connecting
switches/hubs.
Therefore, unless something is weird - the Linux box <--> Netgear Router
should work with a normal cable...

---------- from the Netgear manual ----------

Autosensing Ethernet Connections with Auto Uplink

With its internal 4-port 10/100 switch, the WGR614 v6 can connect to either
a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network.
Both the LAN and WAN interfaces are autosensing and capable of full-duplex
or half-duplex operation. The router incorporates Auto UplinkTM technology.
Each Ethernet port will automatically sense whether the Ethernet cable
plugged into the port should have a 'normal' connection such as to a
computer or an 'uplink' connection such as to a switch or hub. That port
will then configure itself to the correct configuration. This feature also
eliminates the need to worry about crossover cables, as Auto Uplink will
accommodate either type of cable to make the right connection.

"Shadow" <Sh@dow> wrote in message
news:(E-Mail Removed)...
> MY current setup: (read from top to bottom, I'm hopeless at ASCII
> drawing)
>
> ISP
> Antenna on roof
> 10 meters of RGC cable
>>>>>> cable goes where ????
> Linux Box with lotsa nice filters
> 8 port switch
> My PC and a wireless router (netgear WGR614v9)
> The wireless router feeds my son's and my wife's PCs, which have USB
> and PCI wireless cards. My PC plugs into the switch.
>

as I asked in the other posting -
where does the cable go from the antenna ?

Is this what you are using - RGC Wireless ?
http://www.rgcwireless.com/about/
and a normal Ethernet cable
is brought down from the "antenna" package ??

classic RJ45 Ethernet 8 pins - just for reference -
and the Transmit/Receive are then "swapped" inside a switch/hub/router
http://pinouts.ru/Net/Ethernet10BaseT_pinout.shtml

1,2 = Transmit
3.6 = Receive
4,5 = normal voice telephone center pins
7,8 = local power for "classic" telephones

On Sun, 24 Jan 2010 17:41:06 -0600, "ps56k"
<(E-Mail Removed)> wrote:

>
>"Shadow" <Sh@dow> wrote in message
>news:(E-Mail Removed).. .
>> MY current setup: (read from top to bottom, I'm hopeless at ASCII
>> drawing)
>>
>> ISP
>> Antenna on roof
>> 10 meters of RGC cable
>> Linux Box with lotsa nice filters
>> 8 port switch
>> My PC and a wireless router (netgear WGR614v9)
>> The wireless router feeds my son's and my wife's PCs, which have USB
>> and PCI wireless cards. My PC plugs into the switch.
>>
>> I use a "straight cable" with all these connections. I once tried
>> plugging the netgear directly into my Linux box,using the stock cable
>> it came with, but it did not like that.
>>
>> Could I use a cross-over cable between the linux box and the wireless
>> router, and then just plug my PC into one of the RJ45 slots in the
>> router ? That would eliminate the 8 port switch, which is starting to
>> give me startup problems.
>>
>> Or would that damage something ?
>> TIA
>>
>
>BTW - what does your rooftop antenna and RG cable plug into ?
>Where and how is the ISP being accessed - ie - logged onto ?
The RG cable comes down from the antenna and plugs into a PCI
card on the linux box
antenna
http://www.aquario.com.br/?action=pr...=14&s=36&p=104
cable
http://www.aquario.com.br/?action=pr...=14&s=39&p=142
pci on linux box:
http://www.aquario.com.br/?action=pr...=14&s=43&p=152
Not exactly the same as I have, but close enough. The linux
box runs from a brazilfw/coyote based bootable CDrom, which I can
putty into to see logs etc if need-be. And reboot if I think it's been
hacked.
>
>For the router -
>just wondering if, how, or where the Router WAN port is being used - in this
>scenario...
>
>The normal Ethernet cable should have worked directly from router 4-ports to
>Linux box (PC)
>just like it works with any other PC connected to one of the Ethernet RJ45
>4-port switch....
I had some trouble at the beginning configuring the router,
maybe the cable was not the problem.
>
>Cross-over cables are used when the Ethernet ports are not auto-sensing MDI
>ports
>to flip the Transmit & Receive pairs...when used to cascade inter-connecting
>switches/hubs.
>Therefore, unless something is weird - the Linux box <--> Netgear Router
>should work with a normal cable...
>
>---------- from the Netgear manual ----------
>
>Autosensing Ethernet Connections with Auto Uplink
>
>With its internal 4-port 10/100 switch, the WGR614 v6 can connect to either
>a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network.
>Both the LAN and WAN interfaces are autosensing and capable of full-duplex
>or half-duplex operation. The router incorporates Auto UplinkTM technology.
>Each Ethernet port will automatically sense whether the Ethernet cable
>plugged into the port should have a 'normal' connection such as to a
>computer or an 'uplink' connection such as to a switch or hub. That port
>will then configure itself to the correct configuration. This feature also
>eliminates the need to worry about crossover cables, as Auto Uplink will
>accommodate either type of cable to make the right connection.
"Normal" in this case would be a crossover, and an "uplink"
would be a straight cable ? So it should work with my crossover cable.
I'll try it. Just as soon as my son logs off his online game
[]'s

On Sun, 24 Jan 2010 18:20:44 -0600, "ps56k"
<(E-Mail Removed)> wrote:

>classic RJ45 Ethernet 8 pins - just for reference -
>and the Transmit/Receive are then "swapped" inside a switch/hub/router
>http://pinouts.ru/Net/Ethernet10BaseT_pinout.shtml
>
>1,2 = Transmit
>3.6 = Receive
>4,5 = normal voice telephone center pins
>7,8 = local power for "classic" telephones
>
Thanks for the link. I crimp my own cables, nice reference.
BTW, it appears to be working. Mine and my son's anyway. My
wife is watching a film and is in a bad mood .....check hers tomorrow.
So minus a load of wires and switch and power supply from under my
feet.
[]'s

"Shadow" <Sh@dow> wrote in message
news:(E-Mail Removed)...
> On Sun, 24 Jan 2010 18:20:44 -0600, "ps56k"
> <(E-Mail Removed)> wrote:
>
>>classic RJ45 Ethernet 8 pins - just for reference -
>>and the Transmit/Receive are then "swapped" inside a switch/hub/router
>>http://pinouts.ru/Net/Ethernet10BaseT_pinout.shtml
>>
>>1,2 = Transmit
>>3.6 = Receive
>>4,5 = normal voice telephone center pins
>>7,8 = local power for "classic" telephones
>>
> Thanks for the link. I crimp my own cables, nice reference.
> BTW, it appears to be working. Mine and my son's anyway. My
> wife is watching a film and is in a bad mood .....check hers tomorrow.
> So minus a load of wires and switch and power supply from under my
> feet.
> []'s

BTW - I would never use a cross-over cable
unless I was say trying to connect 2 computers back to back
without a small hub...
BUT - I have a couple of small 4 or 5 port hubs laying around
just for that purchase....
or when my son gets together for some xbox linking.

In summary - there should never be a normal need for a cross-over cable.

Also - without proper and LARGE labels on the cross-over,
you may one day grab it accidently - and have things really not work.

On Mon, 25 Jan 2010 00:13:34 -0800, isw <(E-Mail Removed)> wrote:
About crossover cables:
>Make a short Ethernet "Extension Cord", Male on one end, female on
>t'other, wired for crossover. Just plug it on the end of any standard
>cable when you need a crossover, and you'll never use it by mistake.
>
>Isaac
It's a very good idea/hack. I don't have the tools though to
make (crimp ?) the female connection. The male RJ45 crimper is hard
enough to find where I live. So my crossover gets a big lump of
surgical tape on it.
[]'s