Can't Connect Internet Through Router - DHCP Server Not Detected
Aug 10, 2012
i have a problem suddenly cant connect through router anymore.. it said "DHCP server PPPoE not found" but the day before yesterday i can connect.. but if i connect without router (modem to PC/lappie) My router : Buffalo Airstation WHR-HP-G300N, i have tried several action like reset router into factory setting but couldnt solve my problem. i realize recently that DHCP thing cant find any IP address anymore.. is that my router problem/my ISP? when i try wired connection, i realize too.. My IP address, DNS become some what different than usual.
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Aug 10, 2012
I can connect to the network but doesn't connect to the internet. I have tried a lot of ipconfig cmd's /renew said "unable to connect to dhcp server" and others didnt work all out of ideas.
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May 11, 2012
i have my E1000 network detected by laptop and devices but can't connect to Internet. The E1000 is connected to Cisco 2100 modem and I can connect to Internet if I plug my laptop/PC directly to Cisco 2100 modem.
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Mar 3, 2012
Am trying to share the broad band internet from the model to two PCs at home. One from LAN cable and the other from USB cable. But only the LAN cable gets connected. USB connection gets detected, but does not connect to internet.
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May 6, 2012
[code]...
I am able to obtain IP addresses through the DHCP server for my clients and I am able to browse internet on the server 2k8.Server 2008 - Share Internet through DHCP server
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Aug 16, 2012
OLD Dell computer running Windows XP Professional. Just ran a clean install and installed new drivers yesterday. After installing Service Pack 2, I began getting limited connectivity errors. Tried ipconfig/release and ipconfig/renew, but received the DHCP error.
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Apr 17, 2012
My Windows xp computer can't connect to the DHCP server correctly and thus can't connect to the internet. It is connected through an Ethernet cable to a wireless router. All other computers on the same network connect fine to the router, both wired and wireless.This all started after I left my computer alone for a few hours and came back with it not coming out of idle. After shutting it off and turning it back on, it would not connect to the DHCP server.It assigned me the autoconfig address 169.254.189.73 because it couldn't connect to the DHCP server. I even tried a static IP but even that wouldn't fix it. I have tried the same ethernet cable in another computer and it worked fine so I know that it is because of my computer.I have tried renewing and releasing the connection using ipconfig in the command prompt but that did nothing. The settings are all the same as the other computers running through the same router. I have tried shutting down all the other computers and reconnecting the trouble one but again still nothing.The last thing I'm not sure about is the network adapter driver. I have reinstalled it but I'm not sure if the driver is correct. I have an NVIDEA nforce 10/100 Mbps Ethernet adapter. I attempted to reinstall but I'm not sure I selected the correct generation when I downloaded the driver installer. My computer says nothing about the generation of the adapter so I just chose the newest generation. My adapter is integrated in the motherboard.
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Oct 21, 2011
I'm trying to fix my brother's computer (an old Dimension 4600). At first ISP modem wouldn't even detect his computer on the network. I downloaded the Ethernet drivers and installed them and now it detects his computer, but it still won't connect to the internet
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May 16, 2013
We have a bit of a problem when deploying VTP v3 in our network. When command vtp primary vlan is issued, switch typically send query to appropriate multicast address in order to find out whether there is already some other one. The problem we are experiencing is that old primary server is not discovered, because it fails to reply on those multicasts.
This debug messages (from the old primary server )may be more describing.
*Mar 2 22:26:56.057: VTP LOG RUNTIME: Flooding Mechanism FLD-REQ: RX seq 1 ttl 1877620
*Mar 2 22:26:56.057: VTP LOG RUNTIME: Flooding mechanism DB-ADD: seq 1 time 167216060
*Mar 2 22:26:56.057: VTP LOG RUNTIME: Flooding mechanism FLD-REQ: TX seq 1. New TTL 1877621
*Mar 2 22:26:56.057:
*Mar 2 22:26:56.057: relay [Fa1/0/13]: 03 05 00 04 74 65 73 74 00 00 00 00 00 00 00 00 ....test........
*Mar 2 22:26:56.057: relay [Fa1/0/13]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[code]....
So far, I haven't been able to find out the reason of this behaviour. In spite of that, no other strange behavior of vtp has been observed.
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Aug 21, 2012
I'm using a Thomson TG784 router, but it can't get it's DHCP server. This is what it gives me once I let it configure itself.
Note: I pressed the reset button on the router and reset it to the factory defaults.
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Oct 8, 2012
Im setting up SBS 2011 in a new office. From what I understand, SBS 2011 needs to be the network DHCP server for everything to run well under Active Directory. The conflict is with a FIOS router, that also �needs� to be the DHCP server in order to communicate with a set-top box (MOCA bridge.) Verizon lists a handful of network configurations with multiple routers that might work, although completely unsupported. Is it possible for router, SBS2011, and set-top box to coexist in harmony on the same network (preferably keeping DHCP server on the SBS box)?
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Jun 11, 2012
FiOS gave me an Actiontec router that every other day is getting into a state where it refuses to give out IP addresses via DHCP. I have to reset the router to get it to work again.This seems ot have started in the last year, I assume due to some piece of equipment I added, or perhaps the VPN software or Windows 7 installed on my work laptop. I've not been able to figure out what is tripping up the Actiontec router, so I decided to try moving the DHCP function over the WRT610N that I have. I basically had the WRT610N setup without DHCP enabled, no NAT and no RIP, so it was basically just working as an access point. I left the Actiontec at 192.168.1.1 and assigned 192.168.1.2 to the WRT610N on the LAN side, while the WAN side is left disconnected.
I disabled DHCP on the Actiontec and enabled it on the WRT610N. I also set the DNS server to 192.168.1.1 so it would go to the Actiontec for name resolution. Using nslookup from a command prompt on a PC wireless connected to the WRT610N, I can see that names are indeed getting resolved. However, it looks like the WRT610N is setting itself up as a the gateway at 192.168.1.2. When trying to ping something out on the net, I get a message back saying that 192.168.1.2 is reporting the address as unreachable.
I assume this is because the WRT610N is handing out its own address (192.168.1.2) as the gateway. Is there anyway to get the WRT610N to hand out a different gateway address than itself? Optionally, is there a way to get the WRT610N to route requests coming to it over the Actiontec?I suppose I could just ditch the Actiontec altogether, but it seems a bit easier to use to setup port forwards and the like for various servers we have running. It also has a coax MoCA interface which I believe our FiOS set-top boxes use for their internet connectivity, so I don't want to lose that.
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Dec 4, 2011
The e4200 1.0.03 DHCP server appears to be quite buggy. After configuring a static IP / reservation for a client which already had a dynamic IP from the pool, the e4200 continued to offer this client its pool IP. However, the DHCP client listing in the e4200 showed the client having the static IP even though it was still being offered that pool address.This may sound like user error, but I can assure you, it is not. I have had a very frustrating experience with this product, and rather than fool with tech support again, I ran `tcpdump -e -s1600 -n -vvvv -i eth0 port bootpc or port bootps` to absolutely rule out a mistake on my part, bug in the DHCP client, etc. I found that the client was always offered that old IP, even thought the e4200 status display showed the "new" static one, after doing a DHCPDISCOVER without requesting a specific IP. This condition persists across e4200 reboots even after having the client release its lease!I finally was able to resolve this by forcing the client to request the static IP from the e4200.This is unquestionably a bug in the DHCP server, and additionally, the user interface does not show the real state of the underlying DHCP leases held by clients which have static addresses / reservations. Troubleshooting this condition is well beyond the abilities of the average user.
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Jul 9, 2012
Is it possible to configure an 881 router to act as a DHCP server to 4 VLAN's each with a different scopes all through a single ethernet interface?
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May 2, 2012
i'm interested if it's possible to set the NTP server via DHCP on an 2901 Router with 15.2(2) image.
i configured the interface gigabit 0/0 as dhcp client. The DHCP Server sends to me DNS, Default GW and NTP. All is working fine, but the NTP will not be configured. i tried to add an DHCP option request, but there is no NTP (42) value. [code]
is there any way to add the value NTP (42) for the DHCP request or isnt it possible?
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Oct 12, 2012
I have the ea6500 and was wondering what the DHCP server is for? I turned it off and everything seems to be able to connect without it. Am I missing something? Also, when I disable clone my pc's MAC addy, I can't connect to the internet. (My computer is hard wired to the router).
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Sep 29, 2011
i am facing the same problem now but am using windows 2003 server
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Sep 22, 2011
Recently i had suffering with wireless connection problem, currently my wireless router connected to WAN directly, after that go into firewall and then go thru switch to end user PC, for LAN user there is no issue, but for wireless connected PC it is prompted with limited connectivity problem(DHCP is disable on router), after check with ipconfig /all. it seem likely due to wireless PC cannot get the IP from DHCP server. i am using DLink615 router. i had checked firewall setting there is firewall policy that connected all router ip into company LAN, but i don't think there is DHCP VPN setting up. is there anyway i can go thru firewall and get IP from DHCP server because if i set up DHCP on router, it cannot pass thru and access to LAN.
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Dec 27, 2012
Is there a way to get the E4200 to NOT provide itself as a dns server to the DHCP clients? I have the unit set up to provide two dns servers to the clients, but the 4200 always provides itself as a third and it uses my cable providers dns servers. I am using a dns based filtering service to prevent certain material from being accessed within my network as the first two resolvers. So long as both or one of the provided servers is working it doesn't fall back to the unfiltered third, but I would prefer to remove it entirely.
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Jan 4, 2012
I just bought a Linksys E4200v2 router and updated the firmware to 2.0.26.124551. The DHCP server is turned on however, it won't issue any IP addresses. I have to set IP reservations for all of my devices in order for the router to give them an IP address. This includes my printer, xbox360 and 2 computers. I'm also having this problem with the wired and wireless lan.
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Jul 8, 2011
I just bought an e4200. I was using a LinkSys WRT54GS running DD-WRT alternative firmware.
One feature that I really liked in DD-WRT was the ability to assign static IP leases from the DHCP server. I liked having all of my devices running with a predictable, known IP address on my network. I have a Home Theater PC, and various controller applications that run on iPhones, etc. - some pretty homebrewed. Configuring the firewalls, etc. was much easier with IP address based controls.
Is there a way to achieve the same within the e4200's stock firmware?
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Nov 24, 2012
The router always inserts its’ own address as the primary DNS server for the all DHCP clients even though you have set the DHCP server on the router to assign manual external addresses?
Oh I have a
WRT310n v2
firmware v2.0.01 build 004
Let me elaborate a little so I am clear what I am saying. On the router setup page go to the section that is labeled “DHCP server settings” enter 3 static DNS servers. Say 2 Google and one open dns.
8.8.8.8
8.8.4.4
208.67.222.222
Apply your settings.
Release your ip on your workstation, then renew it. And look at your DNS, the routers address is still the first entry.
DNS Servers . . . . . . . . . . . : 192.168.1.1
I suspect this was probably a design decision so that they could allow a user to open their web browser and type something neat like [URL]. Which for the average user is fine and dandy. If my ISP didn’t suck and try to redirect everything to cached copies I probably wouldn’t have noticed it. But since I end up using the router for DNS and it picks up DNS from my ISP I end up getting Akamai IP addresses, and they have problems with SSL certs…. So you get errors.
I know I can go set the DNS server settings on the workstations. But I really don’t want to do this on all of my devices as they are mobile and switch networks, and on some networks not using the local dns breaks things. Like on the corporate network.
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Dec 11, 2012
I am running into a DHCP problem on a Cisco 891 running 15.0(1)M2. I am running DHCP on the router and want to reserve an address for a printer. I have done this hundreds of times on hundreds of routers. Per Cisco recommendation, I let the printer lease an address to see whether it uses it's "hardware-address" or "client-id". This printer uses the "hardware-address" format. The printer has leased 10.0.0.102 right off the bat. I want it at 10.0.0.50.
I have a DHCP pool, like this:
ip dhcp pool CLIENT
network 10.0.0.0 255.255.255.0
domain-name chsinc.ds
default-router 10.0.0.1
dns-server 10.0.0.1
lease 2
I create a "reservation" like so:
ip dhcp pool HP_LaserJet_Printer
host 10.0.0.50 255.255.255.0
hardware abcd.ef12.3456
Now I do a "show running-config" to see what I've put in and it looks just like above. Now we reset the network settings or change any network setting on the printer to force it to renew it's lease. What should happen and what usually happens is that the printer should request an IP, be offered 10.0.0.50, accept that IP and come up on that IP address. What is happening with this particular printer is that the printer requests a specific IP (the same IP that it had initially = 10.0.0.102), the router says OK and does not enforce the reservation. Then the router actually deletes the hardware-address config line right out of the running config. A "show running-config" shows that the reservation config now looks like this:
ip dhcp pool HP_LaserJet_Printer
host 10.0.0.50 255.255.255.0
See the logs below. Notice the ones in bold.
000226: Dec 12 17:34:01.382: DHCPD: Seeing if there is an internally specified pool class:
000227: Dec 12 17:34:01.382: DHCPD: htype 1 chaddr 101f.74b0.575c
000228: Dec 12 17:34:01.382: DHCPD: remote id 020a00000ae1e10100000001
000229: Dec 12 17:34:01.382: DHCPD: circuit id 00000000
[code]....
Is there a way to make the router enforce the reservation and not let clients just bring their own IP and actually make changes to the running-config of the router?
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Jun 8, 2011
Few days ago I started to get the following error message while trying to connect to the internet using Chrome and IE:"Unable to connect to the proxy server..."I don't have a proxy server configured - nothing is checked in the LAN settings page.In Firefox I don't have that problem - it seems it gets the proxy configuration from elsewhere.
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Mar 5, 2012
On my new E4200v2, after I tried to move beyond the disappointment of Cisco removing Internet Access Policy entirely, I decided to give the stripped down Parental Controls a try.
Sadly, I didn't have any luck doing what I needed to do... block my Tivo's from accessing Youtube.
I enabled Parental Controls, Added the Target Devices (my Tivo's did show up), and added "Youtube.com" as blocked site #1. Saved. Entered the parental password when prompted. Even rebooted the router.
But Youtube wasn't blocked. So I added to the target list a non-Tivo device (a Macbook) for a reality check, and rebooted the router again... still no luck. Youtube still not blocked.
So then I started to wonder if their Parental Control depends somehow on the local DHCP server & Client list. Because my E4200 has DHCP Server = OFF (I have always used a Windows Server for DHCP).
I tried to call Linksys support to get this working, but after 45 mins, including escalation to senior engineer, they really were pretty useless (no real familiariarity with my problem) then they disconnected my call!
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Jan 30, 2011
I have a 3911 router with a 1242 AP. The problem that I have is that when the user is trying to connect, the user get the OS Ip address 169.254.168.154 and I see that when I do the "show dot11 association" command, but when I do sh ip dhcp binding on the router I see
172.19.9.141 0100.18de.74db.14 Jan 31 2011 11:14 AM Automatic
The router is seeing as if the router gave the ip address to the user, but the reality the user was assigne the OS ip address 169. I did "debug ip dhcp server events" and I got the following:
Jan 31 11:09:06.752 EST: DHCPD: Seeing if there is an internally specified pool class:Jan 31 11:09:06.756 EST: DHCPD: htype 1 chaddr 0100.18de.74db.14
Jan 31 11:09:06.756 EST: DHCPD: remote id 020a00000a58218400000000Jan 31
[Code].....
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Sep 6, 2011
How many IP address can handle the DHCP server of the RV0xx Series VPN router? can be configured for more than 250 ip addresses? it is posible to configure the router in order to have more than 250 ip address?
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Nov 12, 2011
a spare PC I have will not connect to the network via wireless, it is running XP Pro SP3, and is using a Xycel G-202 wireless adapter. It is seeing my Sky router, and trying to obtain an IP address, but failing every time.
I am using WPA-PSK and the key I am inputting is correct, my phone connects to the network with no problems.
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Apr 28, 2011
I have had this problem now for a couple of weeks, can't seem to find a solution, even after trying all sorts of things I have seen on the web. I can not seem to get the wireless internet to work on my computer. The problem started a while ago and since then I've actually formatted my hard drive and reloaded Windows XP and everything else back onto my computer. I ahve tried connecting to the wireless at home and at work and neither is working. My computer can see the networks when but can not connect to them. I used to have no problem connecting to my home network, I have not ever connected tot he one at work, just thought I'd try it when I couldn't get it to work at home.
1. Updating my LAN driver (I've tried numerous ones and the one that works best is the one that came with my windows XP)
2. Ran both Spybot and AVG to check on spyware/malware/virus and there was not a single thing on either one.
3. Tried many combinations of setup configurations with my home wireless set up. It is a password protected hookup that I have never had problems with before.So in seeing several posts on here I have the following information from my CMD
C:>IPConfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : gateway-ta06zkr
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
[code].....
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Mar 5, 2011
I haven't had internet in a couple of months until recently when I got cable broadband and a TP-Link wireless router. The setup works fine with a ADSL cable but I can't get my laptop to connect to any wireless networks including my new router. If I run a windows troubleshooting diagnostic it says I have no preferred networks. If I go to "manage wireless networks" the box is empty and if I click "add" NOTHING happens. I can see my wireless networks in the networks box on the taskbar but when I click on them nothing happens (secured or unsecured) I'm pretty sure the problem is not with the router but maybe with the adapter or the pc itself. Others can connect to the wireless network
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Apr 9, 2011
I can use my computer just fine right now, but whenever I need to restart it, when it comes back on the internet is no longer detected. I am connected through an ethernet wire directly to the internet, with no intermediate router or network.
After failing to solve the problem on my own, the only way Ive found that has been after to restore the internet connection is using the Windows Restore centre and restoring it to about a month ago; restoring it to only a few days ago does not fix the internet.
However, also when I use the restore function, immediately upon starting my system up again I get an error message saying that the system restore has failed and that nothing was changed. But the internet now works again.
Im not really sure what I should do to check out the problem further, let alone remedy it. I run Windows Vista, 64-bit. I can provide further info if need be.
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May 26, 2011
Just recently my internet got slow, and when it got slow nothing worked. I can connect to the internet and get on skype and some websites but when i try downloading something it says No internet Connectivity Detected.
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Jul 21, 2012
For starters I have a qwest m1000 modem and a netgear router.this morning there was a rather large thundestorm that caused my power to cut out while I was usin my computer.. once I got it back up and running the ethernet light on my modem wasn't liighting up.I reallly have no idea what to do. Everything but the ethernet is working. I can still get to my routers website but that's it, and I don't what to do there once I'm on it.Is it possible the storm messed up the settings? Or killed part of my pc/modem? On my computer the ethernet light next to the jack on the back is yelllow when its threw my rouuter, but when I plug my modem into it directly it doesn't light up at all.
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