Determine IP Address Even DHCP Disabled
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 13, 2012
J've just bought an Asus RT-N66U router and I'm setting up a broadband credit card machine to go into it (rather than transmitting data over the phone line).I need to know what the status of DHCP and MAC are on the router but I'm not sure how to find it.DHCP needs to be on and MAC needs to be off.
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Jul 20, 2011
Do you know an easy way to determine the physical location of the device were an IP address is attached? IP Geo location doesn't work well.Is something like this possible? I know it could be if you are the network administrator and know the location of your equipment and stuff.
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Oct 22, 2012
how do i determine the ip address manually when installing my hp printer. model ; P3005x
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Nov 8, 2012
I have a list of email addresses, people who have subscribed to a free electronic newsletter. The email address is all the information we have about each subscriber.A satellite office is going to begin handling print and electronic subscriptions for subscribers in Peru. Is there any way to determine which of these email addresses are from Peru?
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Mar 8, 2012
Is there a free scan to determine ipaddress of westell7500 router?
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Aug 13, 2012
Do they have a default IP assigned to them?
I'm trying to access the CMS administration page from my browser. I've already tried 192.168.0.1 and that brings up my gateway (cable modem from Time Warner).
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Feb 27, 2013
There is a unicast flood on 3750 killing slow modem links. How to determine source MAC address of flooder? Is there a rate limit feature for it?
I know how to block it completely on port-level, but it breaks normal network operation. (when port goes down for some reason, it's learned MACs got flushed and since other hosts know MACs, they keep flooding untill their arp caches expire).
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Jan 23, 2012
I have a fresh install of LMS 4.0 on Windows Server 2008 Standart SP2. I have one NIC with static IP configuration. I also disabled DHCP client.The problem is follows: when I go to Inventory - Device Administration - Add/Import/Manage Devices, I always get this error:Error in communicating with DCR Server. DCR Server may be down. Please start the DCR Server and then refresh the page.Reload server/ Daemon Manager dont solve this.I try to beat this problem 2 days already. Second uninstall also doesnt solve the problem..
About a week ago I tried to clear log files which was 270gb (syslog.log) and after that restarted the server. And all inventory devices suddenly disappear! I could find it from search menu but cant access - cisco works said that there is no such a device in Device Repository or I havent enough right to view it (but i logged as admin). And after this i failed to add any device in Inventory. So I reinstall Cisco Works and get that DCR error..
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Aug 5, 2012
I have a router (Linksys E3500) set up as an AP. To do that I just disabled DHCP on the router. I can connect devices to it fine, but I'm having a couple of issues.
So I have a DC setup. It's in the same subnet as the router and I can ping it fine, but when I browse to the AP for management it prompts with the username/password and won't accept the credentials. Not sure what's going on here as I've always used the same credentials and I logged into the router fine when I was first setting it up.
Another issue, is if I try to ping this router from a different subnet, it fails. I can ping the DC fine from this subnet. Would this be to do with the AP just acting as a pass-through?
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Jan 5, 2011
why do my DHCP for DLINK DSL-2540T always keep disabled although i already set for enabled one day before?
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Jun 4, 2012
I call century link because my router was not connecting at the proper speed of 7 mbps. That problem was easily remedied over the phone but the lady said she could see several devices connected. This lost me a bit because I have a double router configuration. The Action tech PK5000 i turned into nothing more that an internet modem. I disabled the DHCP and configured my Linksys E1200 for all the internal DHCP so there is only one cable going to the PK5000. I should technically speaking look like one user on there network with natural protection from the second router.
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Apr 5, 2012
Here is where I want to go:
Windows server 2008 (providing DHCP and DNS) 192.168.89.1 on all
Cisco SG 300-20 (switch) 192.168.89.3
all Clients(15 x DHCP assigned IPs) connected to switch
WRT300N(192.168.89.2) connected to switch
Internet modem connected to WRT300N
To achieve this I need to disable DHCP on the WRT300N, since my server is providing DHCP.The issue I have is that when I disable DHCP at the WRT300N, I lose internet connection (connected to either switch or direclty to WRT300N).
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Dec 25, 2012
I have a Belkin N150 wireless router. I have enabled MAC Address Filtering as an added level of security. However; whenever I access the router, and if I check that page; the check mark for the option to enable the filter is always blank.
I have checked the option, clicked Apply Changes, and logged out of the router. i went back in this morning, to check the security logs. (Looking like someone is trying to jump on my network) I didn't see anything there, but when I checked MAC Address Filtering; there was no check mark indicating that the filter was turned on.
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Aug 28, 2011
My first try at configuring my RV042 has had unexpected results. I set a WAN and LAN address, but did not enable remote managment and did not configure any port forwarding. I expected to be able to connect to the router on the LAN and I could. The surprise came when I put in my web address. I got a router login page. How do I suppress than on the WAN side. I have a static address with my ISP.
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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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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 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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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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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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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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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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