WRT54GS wireless Can't Through Motorolla SB5101 Cable Modem

I have a linksys wrt54gs wireless router. I have had it for almost 2 years, it has been hooked up to a DSL modem, no problems whatsoever. I just moved, and now have a Motorolla SB5101 cable modem.
I followed all of the steps exactly for setting up the router with a cable modem. Everything went smooth, when I check the status of the router, it has an IP address, everything's good. But I can't get online. The modem is fine, I'm hooked up right now via USB. The router is also fine, I can log into it and everything. All the lights are good on both the router and the modem. I downloaded and installed the latest firmware, I've power cycled, nothing. I know it has to be something simple, some setting somewhere.
Please help.

My troubles started after I upgraded my WRT54G V2.0 to the latest firmware. The download firmware file is prefixed with WRT54GV4.0_ which leads me to question if it is supported to run on my WRT54G V2.0 machine.
The full name of the firmware binary in the Zip archive is "WRT54GV4.0_4.21.1.US_code.bin". Please confirm or correct that this is the latest & greatest firmware version for my V2.0 WRT54G.
The problem presents itself as an in-ability to connect to ot ping any IP device past the RF side of the Motorola SBV5120 Cable Modem (also an older Motorola SB4100).
I use DHCP on the Modem with OOL's (Optimum On-Line) DHCP Server, in turn I use DHCP on the Router with the Modem as DHCP server and finally use the Router as DHCP Server for my home network desk top/laptop/printservers/USB wireless hubs. Either the Router's MAC address or my laptop's MAC Address is reported in the SBV5120's configuration as CPE device, depending on which is connected. I can always connect to the internet by cabling my laptop directly to the bodem's Ethernet port instead of the Router's WAN-Internet-Link port.
According to OOL tech Support, The SBV5120 and downstream devices do not care about which MAC addresses is used, just that one is present. Apparently the ability of spoofing to defeate MAC Address Filtering worked, so they don't do it any more (My guess - let me know if I'm right or wrong)
The modem log consistently reports success in completing the DHCP process and reports itself as operational. After a series of power cycle of both modem and router, I was finally able to connect to the internet through the router. This lasted about 28 hours. If I connect the IP LAN port of my laptop, I can connect to the internet.
At this point, I found the firmware alternative, dd-WRT, and replaced the LinkSys firmware with the dd-WRT firmware. Consistent ability to connect to the inter has been the result. The Latest LinkSys firmware is in question. I hope they have a plan to fix it. If not, I'm going to look very closely at the alternatives when it comes time to purchase 11n products.

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http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&articleid=3733

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This question was solved.
View Solution.

Go to Start > Control Panel > Printers and delete all instances of the printer.
Next, re-add the printer:
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2. Click >> Start >> Control panel >> Printers.
3. Click the Add a printer
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6. Under Device type, select TCP/IP Device. Under Hostname or IP address, enter the printer's IP address. Click Next.
7. Select Hewlett-Packard from the list of manufacturers and select and select your printer model. Click Next.
If your printer model was not listed, then select Have Disk, browse the HP CD that came with your printer and select the first file that starts with hp and ends with inf. Click Open then OK. Select your printer model. Click Next.
8. If you are asked, use the currently installed driver.
9. It will ask for the Printer name -- enter a new name or use the existing one. This will be the name of the printer that you select from other applications.
10. You may be asked to share the printer. Choose NO.
11. The Print Test Page box appears. Go ahead and print it.
12. Click Finish.
Say thanks by clicking "Kudos" "thumbs up" in the post that helped you.
I am employed by HP

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Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

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As your Internet Service Providor is DSL follow this link

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I have a Wrt54gs wireless router, Ubee DOCSIS 2.0 cable modem U10C018. My isp is grandecom.net.
I have cloned my pc's mac address and can connect to grandecoms systems with my router. (ie the wan interface obtains a 24.155.x.x address)
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I have tried 192.168.100.1 and many others. including 24.155.x.x variations
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Message Edited by BigA1 on 03-01-2010 08:17 PM
Message Edited by BigA1 on 03-01-2010 08:17 PM
Solved!
Go to Solution.

If the WRTs gets a public IP address 24.155.*.* from your ISP then the router configuration is correct. Check the Status page in the web interface.
Do those computers use DHCP?
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Message Edited by gv on 03-02-2010 09:54 PM

Can I run a cat5 cable to a 4 port hub from a cisco router then connect one of the hub's output ports to an airport express to 'extend' my wireless range?

Can I run a cat5 cable to a 4 port hub from a cisco router then connect one of the hub's output ports to an airport express to 'extend' my wireless range?
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thanks!

Yes, you can do this as you stated. In essence you will want to configure both routers for roaming network. Please check out the following Apple Support article that describes this type of network. Although this article uses two or more AirPorts, it can be done with just about any manufacturer's router.

Suggestions for Cable Modem and Wireless Router

Hey everyone!
I have the new iMac and would like to have a faster wireless router. Currently using an old D-Link Wireless G router and would like something like the Time Capsule (as it has Airport Extreme in it) or Netgear Rangemax Dual Band Wirless-N Gigabit Router. My problem is, my Internet is through my cable company, so it comes into the house as a cable connection. It appears that these two combos would still require the use of a cable modem.
Any suggestions to keep the equipment down to one piece? If not, any suggestions for a cable modem so I can return this old one to the cable company?
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Message was edited by: saalbunch

Go to your ISP's web site and do a search from your ISP for compatible cable modems. Then buy the capable modem your ISP says that is comp[atible. On the new cable modem find the Serial number & MAC address, make then call your ISP tech help desk and tell them the new modem you got and he/she will ask you that information. When the ISP tech says they can see/ping that new cable modem then it will work. Then connect a new cheaper Airport Extreme and any external USB2 hard drive to connect to that new Airport Extreme. I say this because Apple put out and Update a little while ago that will allow an external connected to an Extreme as a Time Machine disk.
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Message was edited by: satcomer

WRT54G wireless router irregularly drops connection

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Thanks for all your help wehowardjr.
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Problem Connecting Linksys WRT54G to Arris TM402P/100 Cable Modem

The Problem
Cannot get an internet connection attempting to install a Linksys WRT54G router between an Arris TM402P/100 cable modem and the local network.
Prior Configuration
Previously had DSL, with the Linksys WRT54G wireless router between the DSL modem and the local network, which worked perfectly.
New Configuration
This friend recently changed his broadband from DSL to Comcast cable, and he also has phone and television service over the same connection. The installation tech connected the cable modem directly to a desktop computer and left the Linksys router out.
The direct connection between the cable modem and the computer works fine, but he and his wife each have laptops and would like to us the Linksys router to connect wirelessly.
This is the TCP/IP configuration of the FAMILY workstation connected to Comcast
directly through Arris TM402P/110 cable modem:
Windows IP Configuration
       Host Name . . . . . . . . . . . . : family
       Primary Dns Suffix . . . . . :
       Node Type . . . . . . . . . . . . : Hybrid
       IP Routing Enabled. . . . . . : No
       WINS Proxy Enabled. . . .. : No
       DNS Suffix Search List. . .. : hsd1.wa.comcast.net.
Ethernet adapter Local Area Connection:
       Connection-specific DNS Suffix . : hsd1.wa.comcast.net.
       Description . . . . . . . ...... . . . : Intel(R) PRO/100 VE Network Connection
       Physical Address. . . . . . . . . : 00-11-11-6F-FB-69
       Dhcp Enabled. . . . . . . . . . . : Yes
       Autoconfiguration Enabled . . . . : Yes
       IP Address. . . . . . . . . . . . : 67.185.155.0
       Subnet Mask . . . . . . . . . . . : 255.255.254.0
       Default Gateway . . . . . . . . . : 67.185.154.1
       DHCP Server . . . . . . . . . . . : 68.87.69.10
       DNS Servers . . . . . . . . . . . : 68.87.69.146
                                                    68.87.85.98
       Lease Obtained. . . . . . . . . : Tuesday, January 09, 2007 5:39:26 PM       Lease Expires . . . . . . . . . . : Friday, January 12, 2007 9:58:23 AM
I cannot find a configuration on the Linksys WRT54G that will allow me to connect to the internet through the Arris TM402P/110 modem. Have tried (1) setting the Linksys to use a dynamic WAN address, (2) setting the Linksys to static IP 67.185.155.0 with TCP/IP settings taken from the above configuration, (3) cloning the MAC address of the desktop computer's NIC and trying both (1) and (2) again.
The error message says that the network cable is not connected. Is it possible that the connection between the router and cable modem requires a cross-over cable?
Any suggestions?

on the router's ui... keep the internet type to dhcp....clone the mac address and then do a power cycle...ensure that the modem is completely powered off during the power cycle...if you have a battery back - up , remove the battery...after a minute , put back the battery and then plug in the power cable in the modem...
let me know if this helps you....

Can't connect to internet, Motorola cable modem seems to freeze

I have had this problem more and more fequently the past three or four weeks: I'm connected to the internet by ethernet through a motorola cable modem (SB5101). As long as the PC activity light on the modem is rapidly flashing amber things are fine. As soon as the activity light goes solid amber with no flashing I can no longer connect to the internet or send or receive mail. During one of these "freezes" when I check network status in the network pane of system preferences the light beside ethernet is yellow and the message says-"Built in ethernet is currently active. Built in ethernet has a self assigned IP address and may not be able to connect to the internet." When I check when my connection is working I get a green light and this message "Built in ethernet is currently active and has the IP address 70.44.etc. etc.(not sure if I should make the whole IP address public or not)You are connected to the internet through built in ethernet." I also notice when I check the Built in ethernet under network in sytem preferences that the IP address changes depending on whether the modem seems frozen or not. When disconnect the power to the modem and reconnect, I notice that within about two minutes the IP address changes and I can get back online again. Or at least I could. last time I did this the IP address did not change and I couldn't get back online. Now I'm using my iBook connected via ehternet, which is working fine for now (past 15 minutes). When I first plugged the iBook into the ethernet (I normally connect to the iBook through a snow airport, which I've disconnected to try to isolate this problem) I got this message(with an exclamation in a stop sign)-"IP configuration- 70.44.53.etc in use by 00:01:50:23:3e:c2 DHCP server24.229.54.226". I clicked through the box, and the iBook is still connected to the internet and working. I have contacted Motorola tech support, and it seems the modem is OK. I will contact my cable company next, but I don't have high hopes. Any help would be greatly appreciated.

sig-
Thanks for your reply to my post. I was able to get back on the internet with the G4 using your suggestion, but the modem continues to freeze, whether connected to the iBook or the G4, using ethernet or airport. I will contact my ISP.

WRT54GS wireless Can't Through Motorolla SB5101 Cable Modem

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