E4200 - Renew IP Address Problem (firmware 1.0.02)

[Risteard]

I bought a Linksys E4200 at Future Shop. I was really enthusiasm to use a new router and its new features, and replace my WRT54G. How disappointing when I tried to connect on the internet!!!

I reinitialized it 6 times. I upgraded the firmware. I downgraded the firmware. Nothing to do. Unable to get an IP address from cable modem from my ISP.

Very disappointing for a router that is worth $190.   I know this is not a router Cisco 3900 series, but still!

Is there a responsible employee and Cisco professional that can tell us what is happening with this new router?

[scottahall@gmail.com]

I'm having the same issue.  The cable provider's DHCP lease lasts 8-hours and it appears the lease is not renewed properly.  I assume Cisco/Linksys is aware of the problem by now and working on a new firmware update.  My previous WRT160N is still working great, so I am waiting patiently for the fix, however I am as frustrated as everyone else.  I bought one the "best" home routers for a reason, and this issue is the opposite of my expectations.

[SkidMarks]

Last weekend I swapped out my WRT54G2 with the new E4200.  I saw the same  ISP-IP address problem.  Releasing and renewing either through the router, or in Windows Command panel was fruitless.   I powered off and rebooted ALL equipment on my LAN, cleared all cache and restarted the ISP equipment in the garage.  But I couldn't get the E4200 to recognize the IP address from my cable provider.  As soon as I reconnected the old WRT, the original IP address came right up.  I bought the E4200 with a WET610N and SE2500 and I'd love to use them all, but without an IP address, I'm dead in the water.

[panzies4panties]

Scottahall, Can you post your Modem model number and your ISP?

[scottahall@gmail.com]

E4200 

Charter Cable

[scottahall@gmail.com]

My mistake.  You asked for the modem model number.   It's a Motorola SB5101.

[mantholz]

I'm having the same problem renewing ip address with a E4200 with Time Warner Cable.

[scottahall@gmail.com]

Anyone know if the cable modem DOCSIS rating has any relation to this issue?   My cable modem is a Motorola SB5101, which is DOCSIS 2.0 compliant.   I'm taking a look at the Motorola SB6120, which is DOCSIS 3.0.   I don't know if DOCSIS comliancy includes any non-performance related features, such as API commands.  I mainly see comparisons of channels and speeds.  http://en.wikipedia.org/wiki/DOCSIS    I subscribe to 18Mbps down and 2 Mbps up, so I don't see a reason for upgrading to a DOCSIS 3.0 modem.    If anyone has direct experience related to this DOCSIS topic, it would be great to hear about it.   I'll buy the SB6120 if I will see any benefits.

[esuzuki]

I updated the firmware to 1.0.02 but it never fixed the problem: I cannot access the FTP USB Hard Drive attached to it from the internet outside the LAN. Tech chat never resolved it and recommended that I have to bring it back to the store and have it replaced? What an easy way out to resolve (or will it solve?) the problem....

[z4zorro]

I have the same exact problem: my new E4200 cannot get an IP address from ISP.  I called tech support and I was told the problem is with my modem, but my modem works fine with my old router! Looking at this thread and number of complaints with this same problem, I think the top of the line Cisco wireless router  might have a major flaw. CISCO, are you listening?

z.