WRT54G v7 WAN DHCP client problem

I've recently started having a strange problem with my WRT54G. Internet access is via a Cable modem and has been working fine for months, and the cable modem works fine so I suspect the problem is with the router. However the router is also working, mostly, so I figured I'd see if anyone here has any suggestions. Here are the details of the problem:
The router WAN configuration was set to DHCP.
It used to happily pick up a new IP address from the cable modem whenever necessary.
One night the router stopped picking up an IP on the WAN side. (nothing was changed. I'm the only one in the house who goes anywhere near the router)
Connecting the modem directly to a PC works fine (suggesting the modem's DHCP server is fine).
Copying the WAN IP config from the PC to the router, as a Static IP, also allows it to work when the modem is plugged back into the router and the router to a PC (which is how it's setup now, but it's a pain to have to mess with the physical connections and manually reconfigure the router every time the modem drops a connection (which is another issue, but not one for this forum...)).
So both the modem and the router seem to work except for the router's DHCP client. It works fine as a DHCP server for the LAN.
The firmware was already upgraded (and working), I've followed the standard power-cycle procedure, I've released and renewed the IP via the Status tab in the web interface, and I've tried resetting the router using both the button on the unit and via the web interface to revert to factory defaults.
Any suggestions?
Solved!
Go to Solution.

I also had this problem which occurred after >2 years of the router working fine. After changing MTU to 1300, cloning the PC MAC address, and power cycling the router and modem fixed the problem. But I was curious to see which change did the trick, so I changed both back to the default (MTU = auto and not cloning the MAC address) and it worked fine! I think the router problem is intermittant and may appear to be fixed by changing setting, but I fully expect it to reoccur.

Similar Messages

Cisco ASA 5505 and DHCP Client Problems

Hi, i have a problem. I've connected my ASA appliance to an ADSL modem, and i dont get an DHCP address on the outside interface (e0/0). I use the asa-722-19.bin firmware.
I turned on the debugging for the DHCP client and could see that the ASA device was sending out broadcasts but a reply never came. Instead I connected the device to my internal network where the ASA got an address instantly.
I read somewhere that if I was to use ?ip address dhcp client-id fastethernet 0″, then I got an address from the ISP.
I tried looking for a similar command on the ASA5505 but I couldn?t find anything. I did however find a page on the Cisco site confirming my suspicions. It said some ISP?s require the client-id field of the DHCPDISCOVER request to be filled.
I've also read that this issue has beed fixed since a few weeks, now they have released version 7.2(2).22 where you can define ?dhcp-client client-id interface outside? in global configuration mode. Im running 7.2(2).19 and i cannot find any command like that in my appaiance. How do i fix my problem ? Or how do i get about recieving the 7.2(2).22 firmware update.
Regards !
Leif

Hi again! I thought I should share the solution that worked for me. I use software version 7.2(2) on this device. ASDM 5.2(2). In ASDM open configuration / Interfaces. Click in outside (my case 0/0) and press Edit. Then open the tab Advanced and set the correct Active Mac address. Fore some reason its empty by default and the ISP/modem don't like that. You will find the correct MAC address under the help menu / "About ASA". Im sure there is some another way to do this but this is a simple "how-to" that works with Swedens biggest ISP and their standard DSL modem.
When I used a Linksys DSL modem in bridge mode without the MAC address set I got an inside IP adress (192.168.x.x) from the modem to the ASA. After setting the MAC address I just had to do a renew and got the outside address right away. /Bjorn
(future users searchwords: no ip from isp, ASA 5505 and cable modem).

WRT54GX WAN DHCP Problems?!

Folks,
I seem to be having a new problem all of a sudden. The WAN DHCP client on my WRT54GX has almost completely stopped working. All WAN IP addresses are all zeroes, and hitting Renew in the configuration program doesn't help.
At one point I unplugged everything, brought up the cable modem, waited until it connected, and then brought up the router, and that worked. But then I had to reset the router due to a wireless configuration change, and after that the WAN DHCP client failed again, and I haven't been able to get it working since, even though I've restored the factory settings and power-cycled the device multiple times.
I tried replacing my router with a compatible substitute (WRT54GX2), and although that worked initially, it soon started suffering from the same issue.
The strange thing is that if I plug my PC directly into the cable modem, everything works just fine. I can use the ipconfig utility to release and renew repeatedly without any issues whatsoever. It's as if something Comcast has changed about their DHCP service confuses the router's DHCP client but not the one on my PC.
Can anyone tell me what's going on?

hi...try this out....from a hardwired PC , get into the router setup page....here there is a sub-tab called MAC address clone....hit that.....enable and "clone" or "clone your PC's MAC" ....save settings...once done ...do an ipconfig/all and verify that the "physical address" and the MAC address that u just cloned are the same....then go to the status page and do a DHCP release/renew and check if u get a WAN IP.

WRT54G v7 - DHCP Client List problem

Hi all,
I have the WRT54G v.7 - firmware ver.7.00.8.
erroneously i removed the wrong PC from the DHCP Client Table. /Status/Local Network
How i can restore the list adding back the pc to the list, as there is only he option to remove/delete?
One more question,
how many wireless clients/pcs can the router manage without any problem? ...
I noticed that when we are in 3 or 4 wireless clients the connection is very unstable, slow response, connection drops.
Is there anything i can do to improve this matter?
Ty for any tip,
Frluga
Solved!
Go to Solution.

Reboot your computer and it will receive a new IP address from the router.
Greetings from Northern Ontario, Canada

WRT54G dhcp clients table missing linux boxes - only windows listed

I've searched the forum and similar messages and other routers mention that a firmware update will fix the problem where not all dhcp connections show up in the status/local networks/dhcp clients table.
I have WRT54G hardware version 6, firmware v 1.00.06.
I've looked at the firmware updates and no mention of this problem appears. I don't want to needlessly update my firmware.
Does anyone know if this problem has been fixed in the latest firmware?

More info:
It seems that the linux box (ubuntu 7.04) is using the bootp protocol, not full dhcp. From some reading of the rfc's it seems that dhcp is an enhancement to bootp, and it is valid for clients to request an ip address from a dhcp server (the protocols use the same ports etc.).
However, bootp does not deal with a lease and since the dhcp client tables list a lease time, I am guessing that this different way of getting an ip address is what is messing with the router.
On the one hand, it could be said that since it's not a full dhcp client, the router would be technically correct to not show it in the client list.
But, it does make for a bit of a messy situation as some clients can appear invisible to the network configuration manager. This could be a security issue.

WRT54G - won't display DHCP clients, won't let me change port forward

Just wondering if I need a new router....
It seems to never be able to display the DHCP clients table any more & when I try to forward a port to a connection, the table says it's forwarded, but it never actually changes it.
I upgraded the firmware to 8.00.7 (the latest for v8 hardware), did a hard reset and powered off to reset.
Still no luck....maybe it's just time for a new one?
Any suggestions welcome.
Thanks,
Eric

I just recently got the same issue in regards to the DHCP on my WRT610n. On windows XP a simple right click of the connection, and clicking repair forced windows to flush the DNS and renew them. After than the machine showed up in the DHCP list on the router again (I guess for some reason the leases suddenly stopped being renewed). Unfortunately this appears to of been removed in Windows Vista and been replaced by some kind of automated diagnose and repair system (If no problem is found it does nothing. Unhelpful).
However if you go to start > run > type "cmd" and enter to bring up the prompt, then type ipconfig /flushdns and then after it's complete type ipconfig /registerdns, that should force it to renew it's DNS from the router and it may show up in the DHCP table once more on the router. There's also a ipconfig /renew command that renews all adapters. If you wish to find out more about the ipconfig commands and what each of them does before doing anything, feel free to type ipconfig /?
Unfortunately I haven't found a way to get my router to keep renewing the leases as usual, so I guess this is just a temporary solution to part of your problem. As for the router going to the wrong IP, I was going to suggest DHCP reservation but I've just found out you don't have that, so instead I've found this quick thread that may / may not be helpful to you as it points out a few interesting rules that Linksys operates by: Click Here
As for the Port not forwarding, I'm not really sure, I'm just another user with issues of my own. I hope that one of the mods/staff/more knowledgable techi/person on this forum addresses your issues better than I have soon. Though isn't port 80 the default http port, and thus automatically open anyway? Can you even assign that port to anything? I thought it'd be reserved and thus not usable. Have you tried assigning a different port and forwarding that instead? But then again I'm not the most knowledgable of people =P

Can I use my WRT54G as a DHCP server only? I've got 5 dynamic IP's from Time Warner..

Hi everyone, I'm wondering if I can use my WRT54G as a DHCP server only only my network, without having to have any of my PC's plugged into it's router ports? I looked at the settings but I couldn't get it to work.
Here's why: I just got Time Warner Business Class cable internet which comes with 5 dynamic IP's. I want each computer, well 4 of them at least and 1 for the WRT54G, to have a unique IP when accessing the internet, and the other computers (5 more computers) to use the DHCP server in the WRT54G to get a NAT IP for use on the internet.
We play Diablo II on the internet and only 4 computers can be connected through 1 IP, so that limits us in my current configuration.
Current Equipment: One WRT54G, one Netgear GS116 16 port gigabit non-managed switch. One Time Warner Cable modem. Also attached to the network is one HP network printer, a Buffalo LinkStation NAS and a Zensonic Network DVD player.
Current config: Cable modem --> WRT54G --> Netgear switch.
Ideal config: Cable modem --> Netgear switch --> WRT54G.
With my current config, I am not taking advantage of the 5 dynamic IP's, but all the computers connected to the Netgear switch or the WRT54G can connect to the internet and the NAS.
So my ideal config (where I don't have to buy anything and where all the computers can print and access the NAS) is to connect all the computers and devices to the Netgear Switch and somehow force 4 of the computers and the WRT54G to get a dynamic IP from the cable modem, while the other computers and devices use the DHCP server on the WRT54G to get to the internet.
Is this possible?
I called Time Warner Cable and they weren't any help. I called the Linksys sales department and they weren't of much help either.
I suppose that I could purchase a new 8 port switch and attach 4 computers, the cable modem and the WRT54G to it. Then attach the Netgear to the WRT54G to accomodate the printer, NAS, and the other 5 computers. But in that senario, the 4 computers connected to the new switch can't print and can't reach the NAS. And geez, some computers would have to go through 3 devices to reach the internet, which has got to slow them down.
I did read about the Linksys EFG120 which has a DHCP server, but at $400 and only 120 gigs, it doesn't work for me.
I called Time Warner and the cost of more dynamic IP's is prohibitive, I'm already paying $79 a month for this internet and they want another $50 a month for 7 more dynamic IP's and that wouldn't help my NAS or my printer.
The cost of a 16 port gigabit switch with DHCP is an amazing $800 or so, which is out of the question.
Sorry for being so long winded and thanks for reading this far. I'm looking forward to any replies.

That is a hell of a setup. I don't know if it would be easier and cheaper to either buy a real router like a Cisco, get fixed IP addresses and a RV042, or buy 4 network cards for the four of the five computers which need the internet access for gaming.
O.K. First your setup:
1. You wire the modem to the 6-port switch.
2. You connect the remaining 5 ports with the WAN ports of 5 WRTs with DHCP on the WAN interface.
3. You configure each WRT with unique LAN IP addresses in the same subnet, e.g. 192.168.1.1/255.255.255.0, 192.168.1.2, 192.168.1.3, 192.168.1.4, 192.168.1.5.
4. You turn off all DHCP servers except on one, e.g. 192.168.1.1. That router will be the default router and internet connection for any client which gets dynamic LAN addresses (as fallback or guests, I would not configure the NAS or printer with DHCP addresses if you have everything else on static IP addresses). You can certainly disable all DHCP servers if you want, too.
5. Now you connect all WRTs with each other.
5a. You connect port 1 of the 1st WRT with port 1 of the 2nd.
You connect port 2 of the 2nd with port 1 of the 3rd.
Port 2 of the 3rd with port 1 of the 4th.
Port 2 of the 4th with port 1 of the 5th.
(Do not create a loop connecting port 2 of the 5th with port 2 of the 1st!!)
5b. You buy another switch and connect each port 1 of each router with this switch. This has the advantage that you don't have a long cascade between the 1st and the 5th router like in 5a.
6. You connect all devices to the LAN.
6a. If you did 5a, you will probably put each computer to the router which internet connection it uses. The NAS and printer could go anywhere.
6b. If you did 5b, you hopefully bought a 16 or 24 port switch. Then you plug simply everything into that switch. Otherwise you can certainly use the free ports of the WRTs like in 6a.
7. You configure all your devices with static IP addresses. For instance,
IP 192.168.1.11
netmask 255.255.255.0
gateway 192.168.1.1
For the DNS servers I would highly recommend to use the DNS servers of your ISP directly and not use the relay on 192.168.1.1.
The gateway address defines through which router the computer connects to the internet.
8. You may still have to configure port forwardings on the router to the game computer if required for the game.
An interesting alternative to this setup might be to buy 4/5 network cards for the 4/5 computers with direct internet access. Then you use the one network card to connect to your single LAN behind your single WRT. The other network card goes into the switch behind the modem and has direct internet access. You then have to tell Windows which of the network cards has the default gateway for the internet connection (to prevent routing all traffic through the LAN and the WRT to the internet). One game computer would have to be behind the WRT.

Missing hostname in DHCP Client Table???

I give up. I've searched the internet for an answer to why my mac's hostname does not show up in my WRT54G's DHCP Client Table and come up empty. I see host names for my windows and linux boxes, but not my macbook pro. Anyone have a clue?
Thanks,
Steve

I have a BEFSR81 with the latest firmware (2.51.3) and I have also noticed missing hostnames in the DHCP Client Table. I have a couple of scenarios that this appears to happen.
The first case is if the router is power cycled, the DHCP Client Table will obviously be empty, but even waiting up to 24 hour later for a default renewal, the hostnames are not updated and most remain empty. The only way to get the hostnames to appear is to reboot the machines where the hostname field is empty.
The second case is that some of my network devices never have hostnames in the router's DHCP Client Table.
The last case is when the entire network (machines as well as the router) is restarted. The router is started first and there are no Clients in the DHCP Client table. Then the clients are started and the DHCP Client Table fills up. After 24 hours, the client table will slowly degrade to have several missing hostnames, but the machines are still there and they are at the same address.
Is this a known problem with this router?
I had a Vonage router (Linksys RT31P2) and never had these problems. On the RT31P2, the DHCP Client table always had all the hostnames.
Message Edited by kae on 01-10-2008 05:07 PM

Why doesn't my airport express router issue proper DNS server address to DHCP clients?

I have an Airport express router (version 7.6.4). It was configured to connect to internet via a cable modem, acting as a router with NAT. This means it obtians WAN address from cable modem, and in LAN it assumes IP address 10.0.1.1 as a gateway, and issue IP address to my 4-5 wireless clients (MBA, iPads, PCs) vi DHCP.
However I recently encounter an issue, that the router no longer issues DNS server address obtained from Cable Modem(206.x.x.x) but instead tell every DHCP client to use router ip address (10.0.1.1) as DNS server. I was pretty sure before Dec 2013 it is issueing (206.x.x.x) to all DHCP clients.
Apparently now the Airport express is acting as a DNS server or as a DNS cache. This works sporadically and very often result in long DNS look up or DNS look up failure.
Is this a bug or is it supposed to do so? Any configuration can turn it off so Airport express will issue Cable modem obtained DNS server to DHCP clients?
My network otherwise works fine. for some of the Clients (e.g. one MBA) I configured DNS for it mannually and it's internet is working very smoothly.

But this will be a problem for my ipad and iphone that uses wifi.
These devices either allow full DHCP. If you need to mannually enter DNS server, you will need to turn entire IP configuration to mannual and that will be a problem for me.

WRT400N - issues with brief disconnects and DHCP client table

Hello,
I recently bought a WRT400N to replace my (seemingly) dead WRT54GS. It worked great out of the box, and setup was quick and intuitive, just like my previous router. It came with firmware version 1.0.10 B19.
I'm having two problems. First, while playing some online games, I'm getting brief disconnects every 2-3 minutes. It's usually just enough to make the screen studder (I'll get a "Connection Interrupted" message for a split second), and then it goes away. It's happening often enough where it's causing issues, though. My computer is connected directly to the router via CAT 6, and the only component that has changed since the issue started is the router itself. To add confusion to the problem, when I do a tracert to something like Google, most of the hops come back fine, but I'm noticing it takes 4-5 seconds before it lists an IP address for any given hop, UNLESS a domain name is specified. The actual columns with the latency numbers are filled in quickly, but the IP address itself at the end of the line hangs for a minute. For example, the final hop, "12 22 ms 24 ms 23 ms od-in-f104.google.com [64.233.161.104]" is displayed instantly, but any hops along the way that just show an IP address, such as "11 27 ms 26 ms 25 ms 216.239.48.190" have a long pause before the IP address (bold) is displayed. Normally I would think it's a problem with the routers along the way, but the delay even happens before it displays the hop to my router's IP - 192.168.1.1. Very weird. I wasn't sure if these issues were related.
The second problem is the DHCP client table in the router's web administration utility. On my old router, the DHCP client table always displayed all computers that were connected to the router (DHCP set to auto). With the WRT400N, I'm noticing only a few of the machines are actually showing up. They're all being assigned IPs without any issues, and they're all able to connect; they're just not showing up in the table. I often check the client table to see who's connected or grab a MAC address when I need to mess with QoS or access restriction, so the fact that some clients are missing is a bit annoying. The old router didn't have this issue.
Thank you.

As you are facing this problem with the Wired Computer, then i think you need to change some settings on your Router. Once you login to the Router GUI, below the Setup tab you will find MTU, which will be set to AUTO,So change it to Manual and change the Size from 1500 to 1365 and click on Save Settings. Once you are done, now try to play the Games and check if you are facing the same problem or not.
If still you face the same problem, then i think you need to Re-Flash the firmware on you Router.. Go to website linksysbycisco.com/downloads .........insert model no of your router in serach tab......select proper version of your router........download the firmware file......save that file on desktop..
Follow these steps to upgrade the firmware on the device : -
Open an Internet Explorer browser page on a computer hard wired to the router...
In the address bar type - 192.168.1.1...Leave the Username blank & in Password use admin in lower case...
Click on the 'Administration' tab- Then click on the 'Firmware Upgrade' sub tab- Here click on 'Browse' and browse the .bin firmware file and click on "Upgrade"...
Wait for few seconds until it shows that "Upgrade is successful" After the firmware upgrade, click on "Reboot" and you will be returned back to the same page OR it will say "Page cannot be displayed".
Now reset your router :
Press and hold the reset button for 30 seconds...Release the reset button...Unplug the power cable from your router, wait for 30 seconds and re-connect the power cable...Now re-configure your router...

E4200v2 - DHCP client list NEVER displays

As the most expensive and hyped "consumer router" at the local big-box stores, and after already returning a Netgear N600 that appeared to be defective, I had high hopes that this router would work properly and I could stop fooling with router settings and move on to real work. And I'll acknowledge that for a lot of folks this router will probably be fine. I didn't do any speed measurements or methodical testing, but it seems pretty fast and using it for more than three weeks it seemed reliable. However, it had several issues that were maddening and ultimately for me, unacceptable. Summarized as follows:
> The DHCP client list NEVER displays all the clients connected on my network, no matter how many times I look. These clients are actively transferring data, and I can download free programs from the web that report all clients reliably. Why is this so difficult??
> The logging feature is ridiculous - it often didn't log events that I knew had occurred, and even when they were shown, you would only see an entry if you checked the log very quickly after the event (some sort of "auto-flush" function that makes the whole feature pretty useless).
> The previous issues are annoying - but this was the deal-breaker. I could not connect to an OpenVPN device on my network through this router. I could connect to the device locally, I could connect to other devices remotely through other forwarded ports, and I could see in the log (if I looked quickly enough) that the router was seeing the connection attempt to the OpenVPN device, but it was getting blocked. Many hours searching forums and experimenting with router settings / firmware updates did not help.
> In the pursuit of resolving the third issue, and with very low expectations, I contacted Linksys tech support. This proved to be a complete waste of time. After working through the front-line guy who only knew how to look through the User's Guide, I was connected to another person who was even more clueless and was almost robotic in his hard-coded sequence of attempts to guide me through silly procedures that had absolutely nothing to do with my problem. After again asking if I could speak to someone that might actually understand the issue I was put on hold for more than 20 minutes, at which point the call was disconnected (I think this means they hung up on me).
So once again I'm returning an expensive router that doesn't work properly and will be trying something else. It shouldn't be this difficult.

With reference to your post I would like to know that does all the client devices on your network runs on DHCP or some of them have static IP address as well? The devices which are running on static IP address will not be displayed in the DHCP client table.
Regarding the logs that are not being created on the router for any event that takes place could be because of the reason that you might be using another router or a gateway before your linksys router.
As far as your VPN issue is concerned please try to disable the firewall of the router and then try to connect to the open VPN device because this router acts like a VPN passthrough. Click on the following link to know how to disable the router's firewall http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&docid=87795adab27b4bd7a432e03be4e28e8d_17347.xml&pid=80&...

Have to regularly restart DHCP Client - HP Pavilion 500-205 DT - Windows 7

HP Pavilion 500-205 DT - Windows 7 Home Premium 64-bit SP1
Realtek PCIe GBE Family Controller - Driver 7.67.1226.2012
Bought 3 identical machines for our childcare center. Set them up the same. All work fine except ONE of them becomes inaccessible periodically (daily more-or-less) to the other Windows computers on our little peer-to-peer LAN. You can see it, but cannot access any shared folder. There is NO problem accessing the OTHER computers on the LAN from this one. All 3 machines have the same sharing profile, workgroup, permissions, AV, firewall settings, everything. I realized restarting the computer in question solved the problem immediately but temporarily. I narrowed it down to restarting the DHCP Client service. Do that, everything works fine immediately but temporarily.
Things I tried:
Calling HP support - not helpful at all. It is under warranty.
Disabled IPv6
Disabled wireless
Disabled power-saving shutoff of network adapter
Setting DHCP CLIENT recovery to:
First Failure = Restart the the Service
Second Failure = Restart the the Service
Subsequent Failures = Restart the the Service
Reset Fail count After = 120
Restart Service after = 0
But again, this isn't happening to the other machines with default settings. Nothing works except restarting the DHCP Client service. The loss of access happens with or without someone logged or using it. It has happened since it was first set up.
I don't know if the HP warranty covers factory-loaded OS. I don't want to restore the thing and start over. I am not an IT professional, just the guy in the office who does these things, but it seems like the network adapter could be defective. I don't know if I can convince a first-level phone support person to have me bring the machine to an authorized service place.
Any help greatly appreciated,
Larry
This question was solved.
View Solution.

You're very welcome.
I would tend to agree, but I wanted to offer you that driver as a last resort.
This is a consumer to consumer forum. I don't work for HP, and if you suspect it is a hardware issue, you will need to contact HP technical support and submit a support case under the warranty.
The warranty covers hardware, and support for the HP software and operating system installed (as long as it is the original factory image that came with the PC and not an operating system you installed).

Setting options in DHCP client ...

Hi everyone, ...
Im having problems connecting to my corporate intranet DHCP network and investigating I realize the DHCP server requires a fixed DHCP Option 60 (vendor-class-identifier) with the value "MSFT 5.0".
Please, How can I configure this option in my osx DHCP client?
Regards,
Raul.

So you Mac is supporting Windows 2000 or older Microsoft operating systems? That is what Microsoft DHCP Vendor and User Classes. The 10.6.x system shouldn't need and changing.

Some dhcp clients not reaching internet

This afternoon, I noticed that my iPhone was no longer reaching the internet. Later, we noticed my husband's (new!) iPad and my son's MacBook were not reaching the internet either. At least my MacBook was still reaching the internet. In all cases, the connectivity with the airport was fine; 4-5 bars, most of the time. All were connected yesterday, I believe. We made no real changes. I had my iPhone right next to my MacBook and both had good connections to the wifi, but only the MacBook was reaching the Internet.
I went into Airport Utility and looked at the Time Capsule and found a long list under DHCP clients (maybe 9), but only 4 on the wireless clients list. I researched the issue, finding very little except generic suggestions (update software and reset the Time Capsule). The software was up to date; resetting it did fix the problem, at least for now. I am concerned it will happen again.
Our airport devices:
- Time Capsule running 7.5.2
- 2 Airport Expresses, also running 7.5.2.
Most, if not all, our wifi devices are up to date, including my MacBook running 10.6.5 and my iPhone running 4.2.1.

I'm not sure this is quite the same since simply restarting our Time Capsule fixed things for us. It is annoying since I don't want to have to restart the Time Capsule every week or so when it fails this way, but restarted did fix this, at least temporarily.
Another possibility I came across is that an ISP might limit the number of devices you can connect to the Time Capsule, but that wasn't the case for us. I'm thinking the Apple person you talked to probably checked on this, though.
Hope you can figure it out!
- Liz, aka liz4cps

RVS4000 won't get WAN DHCP address

I just tried replacing a cheap domestic router/switch with an RVS4000 V2 on our work network. This has a WAN connection to a cable modem for internet access via a dynamic IP address.
When I first connected the RVS4000 it got a WAN ip address via DHCP of 192.168.100.11. This is the type of IP address we get when there is an upstream problem with our ISPs cable network, and sure enough we had no internet access. The RVS4000 was set to use DHCP on the WAN interface. So I logged a support call with our ISP but they said there were no problems at their end.
I then swapped the RVS4000 out for the original router. This worked fine and got a WAN DHCP address of 77.xxx.yyy.zzz as it should. Swapped back to the RVS4000 and back to the same problem of getting a 192.168... address.
So, I downloaded the latest firmware from Cisco, which was V2.0.3.2 and flashed the RVS4000.
I then tried again connecting the RVS4000 to the cable modem but this time it would not get any WAN DHCP address at all. On the Status/Gateway page of the web interface it said that the WAN interface was down. However, on the front panel there was a yellow light indicating a live connection on the internet port.
Any suggestions? I am assuming there must be a fault, but thought I would check for advice before sending it back.

Hi Nick,
Connect your computer directly to the modem, obtain the right IP address. Then put the RVS4000 back to the modem connection. Go to the set up, MAC ADDRESS CLONE, Enable this feature then use the option "clone my pc mac".
Then wait 1-2 minutes and refresh the WAN.
Basically this feature puts your computer's MAC on the router WAN interface. You can also use the previous router's WAN MAC if you know it and want to manually type it in.
-Tom

WRT54G v7 WAN DHCP client problem

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