Linksys 54G/DDWRT and 50Mbps help

[xxxx]

Hello all, I have a computer question. I just signed up with Time Warners fastest internet speed (50Mbps down and 5Mbps up) and my Linksys 54G running DDWRT can't handle it. The modem they gave me was the Motorola SB6141 (modem only, no wireless).

So I hooked up Linksys router to my PC and I want to share wireless internet for my iPhone and iPad via that (of course at a slower speed). I am having trouble since it seems to be looking for an IP address rather than giving it one. Can anyone offer me some advice or a walk though on how to set this up?

Internet (Modem) directly to PC via RJ45. PC to Linksys 54G from PC (which is supplying internet). Thanks.

[Ryououki]

Why aren't you going from Cable modem -> WAN port of Linksys 54G, then hooking computer to one of the 4 LAN ports on the back of the Linksys 54G?

[Ryououki]

Also, make sure you unplug the cable modem before hooking up the router to it. Some cable modems will lock the IP to the MAC address of whatever is hooked up at the time of boot, so you have to remove power from the cable modem to allow it to sense the new MAC address of the router.

[xxxx]

The 54G will not handle 50Mbps, even with DDWRT. Max on 54G running DDWRT is 30Mbps.

[gabe123]

Your linksys 54g is old , the hardware might not be fast enough to handle that speed. The switch built in might be able to handle 100mbs, but not router itself, and wireless chip. There are 2 ways to fix your problem:
1) modem to pc. Then pc to wan. This way your pc is always fast. Your wireless devices might not be able to to tell the difference between 50mbs or 30mbs. This setup is troublesome since your pc have to be always on, and share internet to other. This can be done but not recommended.
2) just get a new router. A new $20-30 router can handle that speed now.

[xxxx]

1) modem to pc. Then pc to wan. This way your pc is always fast. Your wireless devices might not be able to to tell the difference between 50mbs or 30mbs. This setup is troublesome since your pc have to be always on, and share internet to other. This can be done but not recommended.

Your assertion about speed is correct, can you give me instructions on #2?

[gabe123]

Easy. Get a new asus router for about $30, install ddwrt if u desire. Plug the modem to wan, and pc to the router switch port ( the other 4 ethernet port). Let the router assign ip adress as normal. This is standard router setup. Im pretty sure your pc will get close to, if not 50mbs itself. Linksys 54g is very dated platform and work wonder for its time. it's still adequate for most people who does not pay for top tier internet. Like u found out, the router chip maxed out at 30mbs. By the way, always get stand alone modem and add router later. This will be less troublesome than a combo modem/router, and much more flexible to customize.

[xxxx]

Easy. Get a new asus router for about $30, install ddwrt if u desire. Plug the modem to wan, and pc to the router switch port ( the other 4 ethernet port). Let the router assign ip adress as normal. This is standard router setup. Im pretty sure your pc will get close to, if not 50mbs itself. Linksys 54g is very dated platform and work wonder for its time. it's still adequate for most people who does not pay for top tier internet. Like u found out, the router chip maxed out at 30mbs. By the way, always get stand alone modem and add router later. This will be less troublesome than a combo modem/router, and much more flexible to customize.

I am sorry, I mean can you give me instructions on #1? Modem to PC -> PC to Wireless Router? (going to be using my 54G with DDWRT)

[gabe123]

Google how to share internet between 2 pc without router. You will need 2 network card on your first pc. And prepare to trouble shoot since it rarely work at first attempt. Its cheaper to buy a new router.

[gabe123]

Another way to solve your problem. Install a wireless card to your pc and share internet directly. Some bundle software let you create a wifi hotspot without much config. This way you wont need a router at all.

[Brianguy]

I think it's time for you to step up your game and get a wireless N router. Have you tested the connection speed directly to your PC? TW might be giving you bs speeds

[xxxx]

Currently I am hardwired into my router and am getting 51mbps down and 5.1mbps up with TW and am VERY happy. The 54G throttles it dramatically. However I want to keep my 54G because I really love DDWRT and I don't want anything long range so security is a bit tighter (along with my WPA2 + AES password). Thus why I am so instant on sticking with my 54G and doing it this way.

I do leave my PC on 24/7 but I don't want to take the security breech of providing internet from my PC via something like MS ICS (?) thus why I want to do it this way, I just don't know how to configure the router and my PC.

I already have 2 RJ45 ports in my PC to handle this operation, I just need the know how.

[tonyxcom]

Get a NEW router that is DDWRT compatible. Routing the internet through your PC should be a last resort.

In order to make your computer a "router" you HAVE to use ICS (or whatever it is called in your version of windows) as that is how you enable the DHCP/NAT server that you need in order for multiple clients to share a single IP.

You can also bridge both of your network connectors but the setup gets even more complex.

[chris1911]

Ok it's not really that complicated. You need two NICs in your desktop.

1. Connect the modem to NIC-1
2. Connect the router WAN port to NIC-2.
3. Set up a static IP on NIC-2 with these settings:
IP address: 192.168.1.100
Subnet: 255.255.255.0
Gateway: 192.168.1.101
DNS: 192.168.1.101


4. Set the WAN of your WRT54G on a static with these settings:
IP address: 192.168.1.101
Subnet: 255.255.255.0
Gateway: 192.168.1.100
DNS: 192.168.1.100

5. Turn on ICS (you will need to google how to do this for your specific version of Windows)

This should create an ad-hoc network between your computer and router and allow you to broadcast wireless for your other devices.

Shoot me a PM if you need any extra help.

[tonyxcom]

Turning on ICS as your first step cuts out the rest of the BS. Also, in XP, ICS liked to use its own subnet and changing it caused it to stop working so you are better off turning on ICS and following the wizard to get it setup.

It will then enable DHCP and spit an IP address to the router.

But doing it this way puts your desktop on a different subnet than your wireless clients so if you have shares or printers on either side of the network thats they only place you can access them.

Of course you can plug NIC-2 to a LAN port on the Linksys and prevent this probem, but you would need to disable the DHCP router in the Linksys since ICS will be handling DHCP.