Do my laptop need 2 ethernet card slots

March 17, 2011 at 14:34:41
Specs: Windows 7, 64-bit
I have been using a 8 port router to connect my laptop and PC to share folders. Now I am accessing wired internet through my laptop by connecting the modem to the 'uplink port' of the 8 port router. But by doing this I lost connectivity to PC as my laptop can only exist in one LAN at a time. My requirement is to access wired internet as well as talk to PC through my laptop, I don't need internet access for PC. How can I acheive this, does my laptop need two ethernet card slots for this to be feasible?!

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#1
March 17, 2011 at 14:45:09
First, I think you're confusing a switch with a router. I've never heard of an 8 port router. All the different make/model's I've worked with have either 1 or 4 LAN ports.

I've also seen plenty of 8 port switches, but that's a switch, not a router. Modern switches don't really have a specific "uplink" port any more. Most any port can be used for this just as any port can be used for a client connection.

A typical setup looks as follows:

Internet >> router >> switch >> clients

With the above setup, you could plug your PC/Laptop into the switch and have both LAN and WAN (internet) connectivity.


It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#2
March 17, 2011 at 15:26:01
Sorry about getting confused with switch as a router.
I used to change the IP address of my laptop to access the PC.
eg: if PC's IP address is 198.162.57.20
I used to set my laptop's IP as 198.162.57.25
This allowed me to talk to the PC through the laptop. Now if I change the IP address of my laptop, internet connectivity is lost.
Hope I made my problem clear.

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#3
March 17, 2011 at 15:44:43
If you move and you don't put a change of address in to the post office your mail doesn't get to you does it?

You get a address that allows you to get on the internet. You change that address to something else you are not going to get internet. Make sense?

Might spend so time on the web googling the difference between a switch and a router. That an learn a little about how tcp/ip works. Doing so and you will understand why you see what you do.

BTW you need a router not a switch.

Answers are only as good as the information you provide.
How to properly post a question:
Sorry no tech support via PM's


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#4
March 18, 2011 at 07:14:03
BTW you need a router not a switch.

I agree completely with what wanderer said.

In your specific case, buy a router with 4 LAN ports. Connect the internet to the WAN port and your client computers to LAN ports. Set the network interfaces on your laptop/PC to get their TCP/IP settings automatically (DHCP) and the router should give them IP's that will allow them to talk to each other on the LAN as well as have internet access.

No more messing around with IP addresses.

If you have more computers than 4, you connect the switch to a LAN port and plug clients in to it. For all intents and purproses, it's invisible and clients plugged into it will still get their IP address from the router's DHCP server and have both LAN and WAN access.

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#5
March 18, 2011 at 07:49:02
Thank you Curt R.............
I will try sorting this out by replacing my switch with a router.
I was just googling around, does USB to ethernet adapter allow me connect my laptop and PC, while I still access the wired internet on my laptop, I am looking at this option as I do not really need internet connectivity on my PC?!
Just wondering whether this(adding one more ethernet slot with a USB to ethernet adapter) serves as a work-around for router, as I only have two devices (laptop and PC) which need to talk to each other while being able to access internet through laptop.

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