Cisco WAN :: 850 Not Getting WAN IP Address Via DHCP
Jan 17, 2012
I have a cisco 850 that is not getting a WAN ip address thorugh DHCP. I have FE4 (The WAN port) set to get an ip address via DHCP, but when I do a test connection from CCP I get this error: Checking interface IP address…failed.No Ip Address for the interface has been obtained. The interface is configured to obtain an ip address through dhcp. The remote end may not be configured with a dhcp server or the dhcp pool may be empty.
Please contact your ISP or WAN administrator and check if the server has been configured to lease ip addresses to the client’s connection through DHCP. Retest connection.I know that the modem is providing an ip address via dchp, because I can plug my computer directly into the modem and get an ip address, so I think I may have missed a setting on the router. Here is he running config: [code] I think the problem may be the Firewall is not letting dhcp through (even tough I haven't set it up yet, and there are no rules in the firewall yet). But I'm not 100% sure about that.
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Oct 10, 2010
I have an intermittent issue getting a DHCP address when using a Cisco Wap 200. Sometimes i can get an address but most of the time my devices fail. This happens with / without WPA or WEP.
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Aug 1, 2011
I am running a Dell Inspiron 530 with Windows XP SP 3. My computer is displaying cannot aquire network address, can't contact dhcp. I have already had the modem and ethernet cables tested, they're fine, and I have tried replacing the network card, no luck. I have also run ip config renew and replace as well as ipconfig/all everything was zero. I checked the startup menu and all the appropriate network apps are marked started and automatic.
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Aug 10, 2011
I disconnected and reconnected the powercable while holding on to the setup button until system, alert, setup go amber. The system led light began blinking green. I waited until one of the leds lights on the ports starts blinking green I then connected the ethernet cable connected to my pc. I made sure my lan connection on my computer was set to dhcp.In the docs claim it should take about 1 minute to grab a new ip address. After a few minutes i check the ipconfig on my pc and I get the apipa address.The setup light on the switch remains green while system is amber. The led for port 1 stopped blinking and remains green.My pc is not grabbing an ip address I don't know what else to do.
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Aug 1, 2012
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.
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Mar 15, 2011
I use the dhcp demon (dhcp server) on my PIX 501 to give my local clients automatic ip addresses, my dhcpd config is here:
dhcpd address 192.168.251.20-192.168.251.40 inside
dhcpd dns 8.8.8.8 8.8.4.4
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd domain lokalnet
dhcpd enable inside
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Oct 21, 2011
I know DHCP can assign more than just address, mask, and gateway. It can also assign a hostname, and DNS. Does anybody know if it can also be used to assign an SNMP address?
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Jul 6, 2012
I have 2 computers that cannot/will not acquire an IP address from my DLink router.There are 2 other computers that aren't having any problem at all...so I assume that it is not a problem with the DHCP service of the router. The 2 computers are laptops: one netbook running Windows XP and another standard laptop running Windows Vista Home Premium x86. Both computers are running McAfee and I have scanned with McAfee and Malwarebytes, and both are malware-free (no infections were found on either system on first scans...so it's not like I'm dealing with a system that has had infections removed). When connected to the network, they attempt to acquire an IP address, but cannot for some reason and then Automatic Private IP Addressing takes over and they come up with a 169.254.x.x address. I cannot figure out why this takes place, as I have gone through Winsock repair, uninstalled and reinstalled both network adapters (ethernet and WLAN) on both laptops and nothing seems to make a difference. I have even tried disabling APIPA by adding the "IPAutoconfigurationEnabled" DWORD value in the registry......still the same. I have manually configured the adapters with a static 192.168.0.x address, and I can begin to communicate on the local area level...but still cannot establish any kind of Internet connection.
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Mar 8, 2011
The laptop can connect to the internet using the wifi card. However, it cannot connect to the internet when using the wired connection but it can be pinged from other machines at work. The NIC does not pick up a different IP address even after releasing and renewing the IP address through cmd. I have uninstalled and reinstalled the NIC. The NIC is working because when I set a static IP address the machine can connect to the net. Using DHCP it goes back to that same IP address. I have tried a winsock repair as well with no go, as well as taking the machine off the domain and re-joining it. Is there something I can do on my end to get a different IP address through DHCP or do I have to get a Network engineer involved? This is a machine on a corporate LAN?
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Nov 17, 2011
i did just had a rogue anti-virus infection i did a removal of it AV Security 2012
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Jul 1, 2012
I am using Windows 2011 SBS and Windows 7 clients.My server has a DHCP range of 192.x.x.150 to 192.x.x.199 and all other I.P. addresses are static. On a workstation located at I.P. 192.x.x.13 I am seeing an address conflict.When I perform an "nbtstat -a 192.x.x.13" command from the server I am given the logical computer name of a staff members personal laptop.Investigation of the laptop reveals that it is set to DHCP, and clearly the address of 192.x.x.13 is outside of my servers DHCP scope, so this I.P.should never be assigned, let alone in duplicate.I Google this topic before posting, and it was suggested that IPv6 could be having an adverse affect. I determined this because I performed a ping on the laptop and only got a MAC address back rather than an I.P. address.However after unticking IPv6, and rebooting, the laptop is still causing havoc.I can set a static I.P. address on the laptop, however this is not ideal.
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Jan 8, 2011
I wanted to connect to the Internet but my laptop has this message: " Your IP address lease has expired. DHCP was unable to renew your lease." I cannot connect to the Internet. What should I do?
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May 18, 2011
problem is my brother has been playing with its config page. he changed the IP Address of the modem and disabled DHCP. he forgot what IP Address he inputted on the config page. I tried resetting the router with the small button on its side. Nothing happens. all the lights blink when i pushed the reset button for 10 sec. but nothing happens. i still can't access its default IP which is 192.168.1.1 IS there anyway to determine its IP Address even if DHCP is disabled ?
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Dec 12, 2012
I have a cisco 887 connected as temp measure to a 3g device via a fast0 port. all works fine. VPN comes up...but the moment i apply the crypto map to the vlan.. DHCP stops allocating ip address. I have remove irrelevant config ( dialer, atm etc as they not been used)
config below
p dhcp excluded-address 10.29.80.253 10.29.80.254
ip dhcp excluded-address 10.29.80.1 10.29.80.229
!
[Code]......
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Aug 25, 2012
i have configured wlc 2504 .in that i have configured two interfaces.one is guest, 2nd is internal user, the pblm when user try to connect with that contain ssid user not getting ip address,
i have connected only one link between core to wlc on port 1.for guest interface i used port 4.but no physical link.
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Mar 29, 2012
I would like to share one problem with WLC 5508 . we added a new virtual interface on the WLC. One new SSID is associated with this interface.
We created a ACL for this interface to restrict the access via WIFI to certian services. It´s not correct that everything works fine because the change were not applied. [code]
The changes of the ACL are applied on the fly, but for reason we don´t know, the clients don´t get a DHCP IP-Address (after changing the ACL) until the Controller is rebooted.
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Oct 31, 2012
Currently we're providing DHCP to wireless clients from a dhcp pool on a cisco 6500. Due to new requirements we need to move to windows 2008 dhcp and when I test this on an unused WLC (7.0.235.0) the client doesn't get an address.
When I do a packet capture on the client I see it requesting dhcp but not getting any response from the server. When I do a dhcp debug on the client I see the same (see attached file).
This seems to me to be a server issue but the same server is supplying addresses to wired clients.
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Feb 1, 2012
Is it problem with iPads or LAP1141n?WLC 4404 and many 1142 and 1141, so other devices laptops, iphones, androind phone works as well.But iPad authorized, but can't get an ip address from dhcp server (dhcp not local on wlc, on windows machine) with coverage lap1141, but it get ip with coverage lap1142, and when i got it i roaming to lap1141 and it stays, if i off/on iPads can't get it again from lap1141.
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May 5, 2013
my Laptop is about nine years old, HP Pavillion Pentium 4. I run Windows XP Home Edition Version 2002 SP3. I use a broadband card from Verizon that I just put in my USB (no router, etc) I'm getting a System Error Source DHCP Event ID 1002. When this happens, my computer, I believe, is going into sleep mode and I have to reboot the system. When I turn it back on and go back on the internet, all my websites that I was in are still there. The error says: The IP address lease 10.170.223.48 for the Network Card with Network address 2c3068c16ED1 has been denied by the DHCP Server 10.173.229.86 (The DHCP Server sent a DHCPNACK message)The DHCP Server Service did not extend the lease on your computer's IP address, so your computer temporarily lost its connection with the Network. I tried the ipconfig /release and ipconfig /renew. I tried going in services.msc and going under DHCP and keeping it automatic but stopping it. I called Verizon and I believe he refreshed my Network settings (I think I knew more about the topic than he did) He said it was my computer, whatever. I just tried the static IP but it didn't seem to take. I restarted and it jumped back to automatic. My last guess is it's something to do with the time frame of when it automatically obtains the address and when it expires. When I do the ipconfig /all it shows only a two hour time frame before it expires. Today I noticed that my computer shut down/sleepmode at the exact time the ipaddress was obtained. So, is there a way to increase this time between obtaining and expiring?
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Sep 7, 2011
I'm a heavy PC Gamer, I play games such as World of Warcraft, Borderlands, Call of Duty, Steam Games, I also know my way around fixing internet issues, But this one just seems to have gotten me off guard, Recently, 1-2 days ago, I was browsing the internet like a normal day, and It was late, so I decided to go to sleep, Turned my computer off, Woke up the next morning, Turned it on, It then shows that I kept getting kicked off the LAN for some reason, It was like this[CODE]
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Feb 23, 2012
I've came across IP address that aren't enough for some users in the company. The IP addresses are more than enough to cater to the user's notebook or PC. However, some users does not know that there are actually limits to the IP we have, so quite a number of them actually uses their mobile / pads to tap the company's wireless.
I was wondering if i could restrict that particular user from tapping onto the network. I know it sounds a bit impossible because DHCP doesnt have that smart function to block whoever we sees deemed as a "nuisance".
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Jun 25, 2011
I just got a brand new laptop and I can't get it to connect to LAN.It's plugged in to the same hub as my main machine and I can't even access my router UI.It's not the cable because I tried plugging in my main machine's cable to the new laptop and the same thing happens.ipconfig reveals an Autoconfiguration IPv4 Address of: 169.254.197.187 But that number should say 192.168.1.1xx I've tried uninstalling and reinstalling the Ethernet driver as well.I've tried resetting the router and modem.I've tried resetting TCP/IP.
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Jun 17, 2011
I have an Avaya IP Phone for work. This has been tested at work and works as expected. After the IP Phone boots it's able to obtain an IP address from work. At home when I plug the IP phone into my DIR-655 router, it's unable to obtain an IP address. Other network devices are able to obtain an IP address, for example any computer or laptop. Also my wireless works with no issues expect for the IP phone. I've already done some searching and found other users with the same issue but I haven't been able to find a solution other than setting a static IP address. I'm curious why this relatively new router won't work with an IP phone. I've played with some of the router settings but it didn't make a difference. Any work around to get the DHCP to work? I'm running the latest firmware for my router: 1.35A Hardware Versions: A4.
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Nov 10, 2011
My WRVS4400N, V2.0.2.1CPU:STAR 9202.Doesn't allocate IP address on DHCP for anything but the Open SSID. All others, WEP, WPA, WPA2, nothing.I tried different clients, Intel Centrino wifi, Cisco, AG-CB21 same results.The config is std, I tried one VLAN for ALL SSID, I tried different VLANS, same.
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Apr 16, 2013
my 5505 running on version 8.2.5 doesn't seem to recogize the simple command "ip address dhcp setroute......"
ciscoasa(config-if)# ip address dhcp
^
ERROR: % Invalid Hostname
ciscoasa(config-if)# ip address ?
configure mode commands/options: Hostname or A.B.C.D Firewall's network interface address
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Jul 1, 2012
I have two routers 1921 and 2901 and both of them are connecting to one Reliable Internet Line from one ISP. 1921 master router and 2901 as a Slave. this is my question, how i can make a Backup DHCP Sever in 2901 as a same IP address generation?
Example :
1921-------> Ip Generator 10.1.1.0 /24
2901-------> Ip Generate 10.1.1.0 /24
both generate same ip address, when the Master is lost, Slave could be Covered the LAN.
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Feb 4, 2013
I have a RVS4000 router with DHCP enabled and in router mode.
The LAN is 192.168.2.x. The RVS4000 static IP address is 192.168.2.8
The router is not the RVS4000 and is at 192.168.2.1
The RVS4000 dhcp is assigning it's clients a default gateway of 192.168.2.8 instead of what I want 192.168.2.1. How can I get the RVS4000's DHCP server to assign another IP address other than its own as the default gateway to its DHCP clients?
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Nov 13, 2012
Not sure if this is a problem with the switch or the wireless AP connected to the switch, but I have a couple of 3560's, one is a 3560G and the other is a 3560, both have phones and wireless ap's connected to them. The ap's on both of these switches continue to loose there ip address and thus disconnect from the controller. This happens about once a week, but the odd thing is that the phones never loose there ip address. All of my other 3560s and 3560g's that have AP's and phones connected are working fine.
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Aug 21, 2012
The wireless client can't get the DHCP address when I enable the On-MAC-Filter-failure, MAC Filtering and Web Auth. Client can get the DHCP address when I only enable the Web Auth in the same WLAN SSID. The WiSM verion is v7.0.235.0. [code]
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Jan 8, 2012
I have a 1250 AP connected to an Switch Cisco 3750. We have a SSID(v lan 1 - native) which get an IP Address from our DHCP Server(located in a Windows 2003 server). I added a new SSID in VLAN 2 and I would like no to use the DHCP Server but to make the AP get an IP Address from the pool I created in the own AP (ip dhcp pool Guest) but every time I try to connect the new v lan, it doesn't get an ip address.
Follow the settings of the AP.
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[Code]...
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May 26, 2013
My 5508 WLC which runs version 7.4 is configured as a DHCP server for the AP management and here's my problem: My AP can get to the address, and can ping the address of the WLC management，But my AP prompts the following log： [code]
In the switch dhcp we can use to do the WLC option43 specified address, but in this case how the address specified WLC, the AP can be registered up?
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Nov 19, 2011
I'm trying to configure my C3550 with fast ethernet port 0/48 assigned to vlan 2 in static access mode and SVI vlan 2 configured as dhcp client.
But I see command ip address dhcp is not available on interface vlan 2:
Cat3550(config-if)#ip ad
Cat3550(config-if)#ip address ?
A.B.C.D IP address
Cat3550(config-if)#ip address
Could it be a problem related to the version running on the equipment (see below the output of sh version command not sure of what EA1 stands for)? I read here [URL] that this command was introduced in version 12.1(2)T
If it is a version problem is there any possibility to download upgraded version for free?
Cat3550>sh ve
Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(20)EA1, RELEASE
[Code].....
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Mar 17, 2011
I have DHCP server running in windows 2003. Presently its unable to provide Ip address for VPN clients who connect remotely. What I should do / reconfigure in DHCP, so that the DHCP server provides address for VPN clients.
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