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Finding previous IP address (DHCP)

Q: Finding previous IP address (DHCP)

Hi, I have a dynamic IP address that changes once in a few days and I need to find out what was my IP address a few days ago (a requirement related to remote access to a certain platform
at work).
My ISP doesn't save previous IP addresses log so how can I locate it in Windows 7 professional (that I currently use)? Is there any log somewhere and how can I access it?
Will appreciate your quick response. Many thanks!<o:p></o:p>

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RELEVANCY SCORE 200
Preferred Solution: Finding previous IP address (DHCP)

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You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

RELEVANCY SCORE 56.8

ok im running win 2k with roadrunner cable internet...i have an external modem and a router...i need to know how to find my netmask default router address and primary and secondary dns addresses. thanks in advance.
 

A:help finding dns dhcp ect w/cable modem

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RELEVANCY SCORE 56.4

Hello. I've changed my computer SID... now I need to change it back. I didn't record my original and I've changed it maybe 3 times trying to gain priveleges back.. modifying whatever files. It doesn't allow me to modify I think system files? I've heard that rollbacks would do it but I've changed my computer significantly since then. It would be correct assuming the information is stored in the rollback or some other place recorded maybe in the computer. If someone could help me that would be GREAT!!

Johnny

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RELEVANCY SCORE 54.8

Hi,

I was wondering if someone could help me find a previous version of a document on my desktop. My system is Windows XP, and it is a Notepad .txt document.

Here is my problem:

I worked in Notepad and created a large document. I saved it and named it, and then saved it many times throughout working on it. I then left the project and worked on some other things for a while. I did NOT close the document (which becomes the problem later). When I came back to the project, I forgot that I had NOT closed the original document, and went to the folder it was stored in, and 'opened' it from there. Because there is some type of bug in Notepad, it will actually open up the document as a second identical document instead of telling you that it is already open, or instead of automatically just going to the already-opened document. Thus, I now had two of the same document open on my desktop.

Because there were a lot of things open on my desktop at the time, I didn't notice that there were two. (Especially since I had forgotten that I had not closed it when I left it the first time.) So I thought that the 'second' copy of the document was the only one, of course, and began to work in it, adding a tremendous amount of data. I worked in the document through the day and into the night, and then closed the document as you would normally do.

That of course saved the document correctly, and all would have been fine, except there was the original/first document (now just... Read more

A:Finding a backup, previous version, or temp file for a Notepad .txt doc

Your best bet might be to search for the file using the middle few letters of the name of the file. If there is a temp file stored somewhere on the disk that contains the full version of the document, its extension might be different from .txt and the first letter and/or last letter of the file name may have been changed by the system to indicate that it is a backup. So if your file was originally named something.txt, I would put in *eth* in the search box and search the whole disk for all matches. Good luck, and do post back with the results.

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RELEVANCY SCORE 54.8

Hi,

I was wondering if someone could help me find a previous version of a document on my desktop. My system is Windows XP, and it is a Notepad .txt document.

Here is my problem:

I worked in Notepad and created a large document. I saved it and named it, and then saved it many times throughout working on it. I then left the project and worked on some other things for a while. I did NOT close the document (which becomes the problem later). When I came back to the project, I forgot that I had NOT closed the original document, and went to the folder it was stored in, and 'opened' it from there. Because there is some type of bug in Notepad, it will actually open up the document as a second identical document instead of telling you that it is already open, or instead of automatically just going to the already-opened document. Thus, I now had two of the same document open on my desktop.

Because there were a lot of things open on my desktop at the time, I didn't notice that there were two. (Especially since I had forgotten that I had not closed it when I left it the first time.) So I thought that the 'second' copy of the document was the only one, of course, and began to work in it, adding a tremendous amount of data. I worked in the document through the day and into the night, and then closed the document as you would normally do.

That of course saved the document correctly, and all would have been fine, except there was the original/first document (now... Read more

A:Finding a backup, previous version, or temp file for a Notepad .txt doc

Make a search for *.* and specify the date of last modification. Then check each file for beeing what you are searching for.

Sorry, that's the only thing I can advice in your case...
 

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RELEVANCY SCORE 53.6

Hi Guys am Administering around 200 Computers and around 30 Digital Medical Machines , ihave a challenge with BAD IP ADDRESS in my DHCP , it has reached the extent of disconnecting Internet access to clients /Staff , i have tried to eliminate the Wireless Access Points one by one but i still get BAD IP ADDRESS, is there any one with a quick solution?
 

A:Bad IP Address in my DHCP

What do you mean by bad IP address? Are you referring to the DHCP server handing out addresses which another client device has already been assigned?
 

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RELEVANCY SCORE 53.6

I have the LinkSys BEFW11S4 wireless router. When I look in the active IP table it shows my two computers I have logged on as XXX.XXX.XXX.102 and XXX.XXX.XXX.127. These are the only two macines on the network and it's supposed to start at 100. My TiVo may be taking up .100 or .101 but obviously not both. My desktop is using .102 and my laptop is listed at .127. Why is my laptop IP so high? Could I have 20 some other computers with IP addresses stealing my internet connection? They don't show up in the active IP address table. What gives? My internet connection has been slow to show up on my desktop when I log on lately (meaning the network connection icon in the taskbar doesn't pop up as quick as it used to) and IE won't work until it does. Any help would be appreciated. Thanks in advance.
 

A:DHCP Address

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RELEVANCY SCORE 53.6

Hi,

After joining my laptop to domain ( 2003 env) my laptop is not taking the IP address from DHCP server. However with static IP it is running fine .

Laptop details

Dell latitude D530
Ram 2 GB
Operating system : windows 7
Network card : Broadcom netXtream 57XX Gygabyte

i have already tried below which does not seems to help me

I have tried to change the adaptor setting
Installed both Mocrosoft provided & Dell provided drivers
Given admin rights
restart DHCP client
Restart other services depedend services


Need your help

A:IP address from DHCP

  
Quote: Originally Posted by porushmittal


Hi,

After joining my laptop to domain ( 2003 env) my laptop is not taking the IP address from DHCP server. However with static IP it is running fine .

Laptop details

Dell latitude D530
Ram 2 GB
Operating system : windows 7
Network card : Broadcom netXtream 57XX Gygabyte

i have already tried below which does not seems to help me

I have tried to change the adaptor setting
Installed both Mocrosoft provided & Dell provided drivers
Given admin rights
restart DHCP client
Restart other services depedend services


Need your help


porushmittal,

Open a CMD window, elevated as administrator,
Start->in search box type: cmd, right click it, and run as administrator.

Then type:
ipconfig /all

cut and past this information to us.

Also you can try after posting the information:

ipconfig /release
- To release the obtained ip address
ipconfig /renew
- To request a new lease

And now try if everything works.

Have a nice day!

zx81

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RELEVANCY SCORE 53.6

Can I find what my IP Address used to be? I need to know. I changed it from something to 192.168.1.x, but I really need to change it back!
 

A:Previous IP Address

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RELEVANCY SCORE 52.8

People,

This morning at work, I couldn't connect to our office network server. Turns out...DHCP, which issues static IP Address's to each work station when they log on, couldn't issue one to me because the pool was 100% full.

But, our office has only has 8 workstations; & the range of IP Addresses was 150 long!

I reduced the range to 100 Addresses; & refreshed DHCP to get back on the network...

...but, has anyone ever heard of this malady? Was there a cause; & can it happen again?

Thanks much,

mark4man
 

A:DHCP IP Address Pool @ 100%

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RELEVANCY SCORE 52.8

Ok so one computer on my router was not getting internet access, so I tried every possible solution, and decided it must be something with the ip address. Now the ip address that it looked like was being auto-assigned to it was not in the range that the dhcp server on my router was supposed to give out. So i manually put in one that should have worked. That did not work either, so now I disabled the router as a dhcp server. On this computer (also on the router) I tried to have it automatically find an address, but that did not work, so I manually put in one and it now works. On my other computer though, this is doing nothing. Any suggestions?

Thanks,

-aaron
 

A:ip address/dhcp problems

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RELEVANCY SCORE 52.8

operating system - Windows XP

i'm having trouble with my wireless connection.
i was reading on how to improve download speeds from another forum,
which told me to type in 192.168.1.1 into my internet browser and i did, but when i got there, a HUGE mistake on my part, i messed with the configuration settings on what i'm sure was the IP address or router or something. anyway right after doing this i got kicked offline, and now i can't sign back on with my wireless connection.
i tried the IPCONFIG "release/renew" thing, but it says cannot renew IP because it's "unable to connect to my DHCP server"

please, if anyone can help i would be very happy. thank you...
 

A:HELP!! IP address /DHCP problem

If that was the IP address of your router, and it got changed, you may need to reset it back to the factory setting.
 

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RELEVANCY SCORE 52.8

So I own an Hp Pavilion a1587c with Windows XP service pack 3, with a Linksys WMP54GX Wireless-G PCI Adapter Card with SRX, updated drivers and all.

Now the issue I am having is that when I attempt to connect to my home network with the correct WEP etc. I get a limited or no connectivity message and cannot access the internet. I ran the network diagnostics tool and discovered that my adapter was working fine, the DNS server IP passed but my DHCP had an invalid IP address. I honestly don't know what to do, I even called my ISP and they said that it was a technical problem with my computer and directed me to Linksys who want to charge me $69.99 for help. I also tried connecting to another network in my neighborhood successfully which proves that its not an adapter problem seeing as it works just fine, though that network is unsecured.

Thanks for any help!
 

A:DHCP invalid IP address?

first use a wired connection - - that will allow easy access and show that DHCP (used for both wired and wireless) can actually work
 

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RELEVANCY SCORE 52.8

We have windows server 2003 as dhcp server .
we have network of 200 dhcp enabled pc.
Now a days many of our pc's are getting Ip address 192.168.1.255.
how to resolve this problem.

Thanks and Regards
Umesh
 

A:Dhcp enabled pc's gets Ip address 192.168.1.255

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RELEVANCY SCORE 52.8

Hi,

Quick background - tried a RIS image to a desktop which failed with 0x000000BB error - network initialization failure. This has worked before with the same desktop model and network drivers but once in a while will throw up this error.

Googled it and could possibly be a corrupt DHCP lease. So I deleted that lease - 10.10.1.25 - and turned off the desktop and unplugged the network cable.

Tried to ping 10.10.1.25 and it was alive but couldn't return a host name by nslookup. Checked DHCP and DNS and 10.10.1.25 is nowhere to be found.

arp -a return a MAC address but couldn't find it in our database - though not all MAC's could be in there but most would be in the database.

Any ideas how 10.10.1.25 could be alive? Thanks.
 

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RELEVANCY SCORE 52.8

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. Any suggestions?
 

A:no IP address can't contact DHCP

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RELEVANCY SCORE 52.8

how do i retrieve emails from a previous email on myway.com
 

A:previous email address

Do you have the username and password?

Just did a search here, it seems that MyWay may have removed email accounts...

https://forums.techguy.org/threads/how-to-get-into-myway-e-mail-again.1170535/
 

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RELEVANCY SCORE 52.4

Okay to start off I have been fighting with this issue for 4 days now and am posting on this forum from my work computer since the only other internet access I have is on my Blackberry.

The Problem:
I turned on my computer a few days back after a normal shutdown only to notice I had no internet connection. I called my ISP (Comcast) and they told me that my "ethernet card" had gone out and that their modem was fine. I went out and bought a new PCI Gigabit adapter from TRENDnet and plugged it into my motherboard and updated the drivers on my computer. I tried connecting again with resetting the modem and still no connection. I keep getting the error of "Unidentified Network" and the computer keeps trying to "Identify" it.

Since then I have spoken with Comcast on 3 separate occasions and even had a Tech person come out to my house to look at my setup. He tells me (after replacing my modem and ethernet cable) that my connection is fine and after connecting his laptop to my modem he receives a good IP address and can surf the net. When connecting the modem back to my computer and resetting it, I check my IP address and keep getting an address of 169.254.xx.x with a Subnet mask of 255.255.0.0 and no gateway listed. Both network adapters "are working properly". Occasionally I'll get a 192.168.xx.x IP address when I first reboot the system but it only stays for a matter of seconds before dropping back into the 169.254.xx.x.

My Computer:... Read more

A:Can not contact DHCP Server, 169.254.xx.x IP address.

Have you tried booting in Safe Mode with Networking to see if it connects that way?

What is the EXACT make/model of the modem and the router?
 

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RELEVANCY SCORE 52.4

Hi Everyone,

I have a strange networking situation. Let me start by saying this situation is on a Domain, and that 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 Googled 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.

If anybody knows of any way that I can stop this from happening it will be greatly appreciated.

Kind Regards,

Davo

A:DHCP assigning address outside of Scope

Hi Everyone,

Further to my earlier post here is a screen shot of both ipconfig & Control Panel settings on the Laptop:



I have actually managed to fix this by -

1). Changing the IPv4 settings to static - and assigning the address in question (e.g.192.x.x.13)
2). Subsequently changing the IPv4 settings back to "Obtain an IP address automatically"

The laptop now reports an I.P. address of 192.x.x.174 (Preferred), which is actually within the DHCP scope of my Server!

I have actually managed to fix this by -

1). Changing the IPv4 settings to static - and assigning the address in question (e.g. 192.x.x.13)
2). Subsequently changing the IPv4 settings back to "Obtain an IP address automatically"

The laptop now reports an I.P. address of 192.x.x.174 (Preferred), which is actually within the DHCP scope of my Server!

Last week my Server decided to reset the DHCP scope to 192.x.x.1 to 192.x.x.255 (with a few "address excludes" added for good measure), I believe the reset resulted from Windows updates, so I am going to assume that this issue was a left over from last weeks "undiscussed" change!

Kind Regards,

Davo

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RELEVANCY SCORE 52.4

Ok

Here goes, you will have to bare with my limited knowledge.

In my home I have a PC and a laptop. I have a wireless router and the laptop is connected wirelessly and the PC by ethernet cable through the router. Now all of a sudden the PC is having internet issues. It is connected to the internet but you cannot access email or internet, this has all happened seemingly out of the blue. The wireless network has been up and running for about 2 months maybe without problem.

Ok so I clicked repair on the connection and it was unable to renew the ip address. I went into the command prompt and it seems that its being assigned a default ip address and the default gateway is offline. I tried to renew address here however it said it was unable to connect to the DHCP... here is where im lost on where to go next.

The laptop is running on the network with no issues. I shall copy what is said after ipconfig /all

host name .... the-nxjno4724cy
primary DNS suffix....
Node type.... Unknown
IP routing enabled ... No
Wins proxy enabled ... No

Ethernet adapter local area connection 3
connection specific DNS suffix ...
Description .... realtek RTL8139/8107 family fast ethernet NIC
Physical Address... 00-08-55-44-FE-1A
DHCP enabled... YES
autoconfiguration enabled .. yes
autoconfiguration ip address .... 169.254.40.85
Subnet mask ... 255.255.0.0
Default gateway ....
I would also like to know why this has suddenly happened.

I searched about a bit for a solution, it seems quite a commen pr... Read more

A:cannot connect to the DHCP to renew ip address....

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RELEVANCY SCORE 52.4

Hi guys.

Here is an interesting one for you. For a few days now I noticed that 1 computer on this network has been issued the wrong IP address. It is a Windows XP Pro SP3 PC using a internal Realtek LAN adapter.

Using DHCP issued from a 2wire ADSL router
Default DHCP configuration
IP Address Range 10.0.0.1 -> 10.0.0.99
Subnet 255.255.255.0
Default Gateway 10.0.0.138

However this computer has been issued with
IP Address 120.151.90.99
Subnet 255.255.255.248
Default Gateway 120.151.90.98
DHCP Server 10.0.0.138
DNS Server 10.0.0.138

Internet still works but network drive access doesn't.

All computers are plugged into a NetGear 16 port network switch with 1 cable going to the 2Wire ADSL router.

Everyone else on the network is correct and so was this PC up until last Thursday. The system was being used in the morning. Had a blackout and ever since this problem has occured.

Trying a few things gives these results.
Restarting the router and network switch - Made no change
Restarting the PC - Made no change
Disable Windows Firewall - Made no change
Disable AVG AntiVirus - Made no change
Disconnected LAN cable - Address issued was the default 169 auto config address
Reconnected cable - Went back to 120.151.90.99
Repaired Connection - Made no change
IPCONFIG /RELEASE - Gave address 0.0.0.0
IPCONFIG /RENEW - Gave address 120.151.90.99
Used Setup Network Connection Wizard - Made no change

There is only a single LAN adapter in the system ... Read more

A:DHCP issuing wrong IP address

NotVeryWiseOne said:





Here is an interesting one for you. For a few days now I noticed that 1 computer on this network has been issued the wrong IP address. It is a Windows XP Pro SP3 PC using a internal Realtek LAN adapterClick to expand...

ok




There is only a single LAN adapter in the system and ICS is not enabled. Have got them out of trouble by using a static IP address and everything works fine however doesn't solve the DHCP problem.Click to expand...

as dhcp ONLY serves to autoconf the client and you've setup static settings, actually you are DONE. The caveat of course is that you would like (I hope) to have one point of control from the DC side. Let's see ...





Using DHCP issued from a 2wire ADSL router
Default DHCP configuration
IP Address Range 10.0.0.1 -> 10.0.0.99
Subnet 255.255.255.0
Default Gateway 10.0.0.138 << atypical here but valid; normally the router is the gateway
.....................................................and it would be at 10.0.0.1 and the dhcp range 2-100

However this computer has been issued with
IP Address 120.151.90.99
Subnet 255.255.255.248
Default Gateway 120.151.90.98
DHCP Server 10.0.0.138
DNS Server 10.0.0.138Click to expand...

one would hope the DNS would be on your DC or a public ISP; sure bizarre.
(there's a remote chance of something else, but let's defer that discussion for now)

Normally, the client BROADCASTS on x.x... Read more

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RELEVANCY SCORE 52.4

I have a HP 7713 that is running Vista. Everything was working good and all of sudden it would not reach this internet. I went into IPCONFIG and noticed that both the wireless and wired connection had 169 address. I checked and both connection show connected, but it seems as if the they are not being used. I connected wire shark and filtered on the MAC address of the wired machine, power cycled the PC and also did a IPCONFIG /RENEW and I am not seeing a DHCP request go out from either interfaces on the machine. To verify I had wireshark filtering correctly I filtered on a different machine and saw the DHCP request good. Also in making changes on the machine, I have seen ARPs go out of the machine. I have disabled the FW and removed all virus software. I also attempted to put static IP address on the machine which show up on the IPCONFIG but I still can not use that interface. I am at a complete lose of what to do next. I noted that Computertechie had this same issue in July of 07 but I did not see that it was ever fixed. I am about ready to just reimage the machine, but I want to see if anyone had an answer..I am also pasting Computertechie posting

HELP ME IF YOU CAN MY PC IS DOWN!!

Vista - No Internet, Can't ping anything, can't get DHCP address
Hello, I'm trying to sort out an Acer Aspire 5050 laptop with Vista Home Basic (not too impressed with Vista so far).

The Internet was working ok for the end-user then stopped working for no reason.

I cannot ping ... Read more

A:Vista Not Requesting DHCP Address

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RELEVANCY SCORE 52.4

Hi Everyone,

I have a strange networking situation. Let me start by saying this situation is on a Domain, and that 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 Googled 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.

If anybody knows of any way that I can stop this from happening it will be greatly appreciated.

Kind Regards,

Davo
 

A:DHCP assigning address outside of Scope

Hi Everyone,

Further to my earlier post here is a screen shot of both ipconfig & Control Panel settings on the Laptop:

I have actually managed to fix this by -

1). Changing the IPv4 settings to static - and assigning the address in question (e.g.192.x.x.13)
2). Subsequently changing the IPv4 settings back to "Obtain an IP address automatically"

The laptop now reports an I.P. address of 192.x.x.174 (Preferred), which is actually within the DHCP scope of my Server!

I have actually managed to fix this by -

1). Changing the IPv4 settings to static - and assigning the address in question (e.g. 192.x.x.13)
2). Subsequently changing the IPv4 settings back to "Obtain an IP address automatically"

The laptop now reports an I.P. address of 192.x.x.174 (Preferred), which is actually within the DHCP scope of my Server!

Last week my Server decided to reset the DHCP scope to 192.x.x.1 to 192.x.x.255 (with a few "address excludes" added for good measure), I believe the reset resulted from Windows updates, so I am going to assume that this issue was a left over from last weeks "undiscussed" change!

Kind Regards,

Davo
 

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RELEVANCY SCORE 52.4

Hi All,

I need assitance to find out why some of computer in my work place getting into DHCP. Let me give some insight. We have 1 Server 2008 R2 and 30 Windows 7 pro computer. All connected through network and PXE booted. WInpe and wim are stored in server.

We have script to set IP address, gateway and DNS details wrote using WMI objects. i have found that some computers setting Static IP address however after reboot it loosing Static IP and getting into DHCP. Addition to that i even see When i do ipconfig "Ethernet adapter local area connection 2" when i am setting IP address after reboot it shows "Ethernet adapter local area connection" and this is going to DHCP and getting different ip address.

Additional Information:
--> WIndows 7 SP1
-->Same Mac address
-->checked form event logs couldn't able to get much information why did it dropped static IP
--> Only 1 NIC


I required help in finding why this is happening to some computer and it is very randomly. Please let me which event log location of LAN interface and How can i fix this issue because lot of other application are depend on this static ip which are getting failed.

Thanks,
Vamz

A:How do i know why Static IP address dropped and getting into DHCP

Welcome to Seven Forums,

Do you have a script applied in the GPO?

Select OU, in Group Policy Management Editor, expand User Configuration >> Policies >> Windows Settings >> Scripts.

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RELEVANCY SCORE 52.4

hey guys .... i have dsl running in my office thru mpower communications ... since a week ago ... i can't connect to the internet ... in the notification area ... (icon with two monitors), the "sending" part is flashing but not the "receiving" one ... when i do the ipconfig/all, i get the 169 ip address, ... i did the loopback address and i get all the replies ... i manually configured the ip setting but still the same thing. i ran the winsock fix ... same thing. the funny thing is i took the computer to the other location and i can connect to the internet. and according to my co-worker, two days ago mpower tech came to my office and ran the internet connection thru his laptop and it worked ... so i don't know what the problem is ... is there something in the registry that can prevent communication with certain modem? i've done pretty much all the possible fixes and i just can't get it to work ... i used a cd, that's included with the router, that can check the internet connection but couldn't get it. does anybody know how to fix this thing. thank you
 

A:dhcp problem ... assigning 169 ip address!!

When you manually enter in the IP information , can you ping other local computers by IP address.

Can you ping the IP address of the gateway (router)

Can you ping the actual external DNS IP addresses
 

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RELEVANCY SCORE 52.4

Ok, I've read the rules, had a quick search for some of my keywords and seems well for me to post.
I have just installed a new graphics card, soon thereafter I started getting problems with art programs and if I opened several pictures at once across any browser (I think, although I was mainly using firefox). Of course recapping what I had done I realised that I had not uninstalled the old card, long story short I uninstalled it, got the new one reinstalled and the browser problems stopped, or so I thought.
I quickly noticed that the Art programs still didnt work, and (although less frequently) the browsers still expierence some problems.
The Error symptoms are: Computer freezes, no access to anything, Mouse doesnt move and After afew clicks the computer will beep at me, On the art programs about 2/3rds of the image will Flash, or turn black entirely about every 4 seconds.
Annnnd the error log says:

"The ip address lease "ip" for the network Card with network address "network address" has been&#x000d;&#000a;denied by the Dhcp server "similar ip" (the DHCP server sent a DHCPNACK message),&#x000d;&#x000a;"
So, I think thats about where I stand. Soon after this I realised that every time this happened I was in fact online. (should have noticed earlier).
Im on a dynamic ip and using a linksys router (aren't I the fool), and thats about everything I think I can give you information wise. If anyone can h... Read more

A:Dhcp Ip Address Lease Denied?

This is strange, what kind of card did you pull?

pci/agp/pci-e

what kind did you add?

the more details the better

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RELEVANCY SCORE 52.4

I can connect wired but not wirelessly. I get limited or no connectivity. When I try to repair I get the message "cannot connect to dhcp server. request has timed out" Here's my info:

dell vostro 1500
win xp sp3
wire2 router 2701hg-b

i've reset my router/modem many times
initially i thought my wifi adapter was bad but i bought a usb adapter with same results
here's the commands i've run:

ipconfig /renew
netsh int ip reset reset.log
netsh winsock reset catalog
netsh interface ip delete arpcache
netsh int ip resetc:\resetlog.txt

more info:

ethernet adapter lan2:
ip address: 192.168.1.xxxx
subnet mask: 255.255.255.0
default gateway: 192.168.1.254

ethernet adapter wireless network connection 2:
connection-specific dns:
autoconfiguration ip address: 169.254.199.176
subnet mask: 255.255.0.0
default gateway:

i've also disabled and enabled the adapter. i downloaded a free program that was supposed to fix any registry issues. i can't remember what it's called and can't even find it in remove programs. i've done a lot but i only started writing it down today. i appreciate any help and sorry if i haven't put enough information.

there's another laptop here that connects wirelessly.
 

A:cannot renew ip address, connect to dhcp

i downloaded a free program that was supposed to fix any registry issues.Click to expand...

If you ran the program it would be best to do a System Restore to just before it did its "fixes."

Disable encryption on the router and make sure MAC Address filtering is disabled and try to connect. If successful you can probably re-enable encryption and reconnect.

Do you have a non-Windows firewall with separate settings for wired and wireless?
 

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RELEVANCY SCORE 52.4

Hello everyone,
I'm a technician working on an issue with a work laptop. 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. Anyone see this before?
Thanks
 

A:Laptop does not change IP address through DHCP

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RELEVANCY SCORE 52.4

Hope someone can help. I have searched the forums for an answer but haven't seen my exact problem.

I have an HP Pavilion running Windows XP and a cable modem connection to the internet through my ethernet card. The internet connection has been going fine for the last several months.

Yesterday, after cleaning out some junk my kids had downloaded on the computer and uninstalling some old, unused programs, my internet connection suddenly stopped working.

I tried the usual fixes (turn modem off and on, reboot computer, check wires, etc) then called my cable company. I spent a lot of time with the tech and here's what we came up with. My computer is unable to obtain an IP address from the ISP and the problem is not on their end. In checking the status on my services, the DHCP Client service shows as "starting" but never actually starts. It is set to start automatically. The tech thinks this is the reason I cannot obtain an IP address.

The question is, is there any way to fix this short of reinstalling Windows XP? BTW, I do have Zone Alarm, but the problem persists even when I turn off Zone Alarm.

Any help would be much appreciated.

Ann
 

A:Can't get IP address (DHCP client problem)

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RELEVANCY SCORE 52.4

So I've been looking through the forums for the last few hours trying to figure out what my computer's deal is. My network is set to automatically set an IP, and this has worked semi-okay for the past few days. It disconnects a lot but I can usually go to the Command Prompt and then release and renew my IP, which would normally fix it. So I did that today, only that time it said something about being unable to contact the DHCP server. So I then typed in ipconfig /ALL and it said the DHCP isn't enabled. I tried it again just recently, but instead I get a message saying that the RCP server is unavailable, but the ipconfig /ALL prompt still says the DHCP isn't enabled. So now I'm stuck using my phone to find solutions for this. If anyone has any idea to fix this, please please let me know, I've been looking for a working solution for hours...

A:DHCP is disabled but IP address is dynamic?

You could try setting a static IP and see if the connection remains stable at that point. Just make sure you pick an IP that you know is available, and that the subnet mask is correct (usually 255.255.255.0 for home environments), and that the gateway address is the address of your router (usually 192.168.1.1)

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RELEVANCY SCORE 52

I've been trying for so long to connect internet to my laptop. After using the ipconfig /release, ipconfig /renew, it said "An error occured while renewing interface Local Area Connection : unable to contact your DHCP server. Request has timed out". I am connecting with the cable directly from the modem. When I plug the cable inside my newer laptop, I have no problem connecting to the internet. My laptop that needs its ip address renewed has been turned off for around 2 years. So I'm guessing it may be considered a new connection by the DHCP server?

TCP/IP Properties "Obtain an IP address & Obtain DNS server address are already set to automatic. When I click on advanced it said DHCP is enabled.

When I look on Add/Remove Windows Components, the DHCP option isn't there.

The laptop is an HP ze4400 and the system is Microsoft Windows XP Version 2002. I'm using Comcast internet with an Arris modem. (Not sure if you really needed that info, but just to make sure.)

I'm not good at computer stuff, so please bare with me and give me a step-by-step example into solving this problem.
 

A:unable to connect to the DHCP to renew ip address

TCP/IP stack repair options for use with Windows XP with SP2/SP3.

Start, Run, CMD to open a command prompt:

In the command prompt window that opens, type type the following commands, each followed by the Enter key:

Note: Type only the text in bold for the following commands.

Reset TCP/IP stack to installation defaults, type: netsh int ip reset reset.log

Reset WINSOCK entries to installation defaults, type: netsh winsock reset catalog

Reboot the machine.

Connect the cable and do the following tests after the reboot.

Try these simple tests.

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

NOTE: For the items below in red surrounded with < >, see comments below for the actual information content, they are value substitutions from the previous IPCONFIG command output! Do NOT type <computer_IP_address> into the command, that won't work. Also, the < and > in the text is to identify the parameters, they are also NOT used in the actual commands.

Do NOT include the <> either, they're just to identify the values for substitution.

IPCONFIG /ALL

PING <computer_IP_address>

PING <default_gateway_address>

PING <dns_servers>

PING 74.125.45.100

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter to copy the contents to the cli... Read more

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RELEVANCY SCORE 52

when i am typing ipconfig /renew in command prompt as admin, it is saying unable to contact your dhcp server

request has timed out. please solve this error
 

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RELEVANCY SCORE 52

A workstation in a company’s domain environment has the following configuration:
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix……………………….:
Description…………………………………………………: Intelฎ 82567LM Gigabit Network Connection
Physical Address............: 00-1F-16-16-IA-36
DHCP Enabled……………………………………………..….: No
Autoconfiguration Enabled…………………………..…: Yes
Link-local IPv6 Address…………………………………...: fe80::1db5:3b05:119d:240b%10 (Preferred)
IPv4 Address……………: 192.168.16.225 (Preferred)
Subnet Mask……………………………………: 255.255.255.0
Default Gateway………………………………………………:
DHCPv6 IAID………………………………………: 234888982
DHCPv6 Client DUID…………………………………………: 00-01-00-01-15-7F-F8-71-00-1F-16-16-1A-36
DNSServers......:192.168.16.20 192.168.16.11
NetBIOS over Tcpip…………………………: Enabled

...a host record for a webserver has been entered on the company’s DNS servers: webserver Host (A) 192.168.16.33
So we have two questions please:
A. Can the user get to this resource from the workstation?
B. Could the user get to Google.com?
 

A:No default Gateway, DHCP off, address issue?

this appears to be a homework question, and we do not answer these type of questions here

so I'm closing your post
 

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RELEVANCY SCORE 52

Hi,
 
I'm using windows 7 on a Dell Latitude laptop. I was using two broadband movil modems (sierra wireless and ZTE). I'm no longer using those devices so I unistall the software and drivers from the laptop. After that I run CCleaner and some registry keys related to the modems were removed. After that I can no longer change the TCP IP IPv4 paramenters of the NIC (I can not set an static IP).
 
The NIC is working perfectly with DHCP (I'm writing this from the laptop). I tried several thing but none of them restore the functionality.
 
1) I removed and installed the driver of the NIC.
2) I type the commands; a) netsh winsock reset catalog, netsh int ipv4 reset reset.log.
3) Just in case I run full scan with my anti-virus and malawarebytes. Both reports negative results.
 
When I go to the NIC status I select Internet Protocol Version 4 but the [unistall] and [properties] buttons are dimmed/disable. The [install] button is active. When I click on it I tried to add the protocol but I get a windows that saids: Could not add the request feature. The error is:The data is invalid.
 
I also check the wireless connection and I have the same problem. So it seems that all network interfaces have the same issue but all of them works with DHCP.
 
How can I restore the IPv4 functionality to set parameters manually. Again everything works fine with DHCP.
 
Thanks.

A:Can not manually set IPv4 address but DHCP is working [Win 7]

Seems like a bad registry entry.
 
Open: RUN (WIN + R)
Type: regedit
-Hit Enter
 
Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
Scroll past to show this value: DevicePath
The value should be %SystemRoot%\Inf and of type REG_EXPAND_SZ.

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RELEVANCY SCORE 52

Like the title says, I am having trouble connecting to the internet. It seems like DHCP is not working, though it is running. I have tried disabling ipv6, setting up a static ip and neither worked. It persists if windows firewall is turned off. After some time it does successfully connect to the internet, but whenever it restarts or the lease expires, poof goes the connection.

netsh winsock reset does nothing


wireless tp-link wdn4800 - windstream in mn - dsl - netgear n600 - windows firewall -

Code:
Windows IP Configuration

Host Name . . . . . . . . . . . . : hydrogen
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TP-LINK 450Mbps Wireless N Adapter
Physical Address. . . . . . . . . : 64-66-B3-21-6E-CC
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::8d8c:64b5:3ba4:6a15%11(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.106.21(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 241460915
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1B-3B-C5-BF-64-66-B3-21-6E-CC
DNS Servers . . . . . . . . . . . : ... Read more

A:Problems with DHCP not at all/quickly assigning an IP address

Can you post the output from the following.


Code:

netsh wlan show all
Have you tried rebooting the router etc...

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RELEVANCY SCORE 52

Hello! After weeks of my own investigation and trial and error, I have come to you guys for, hopefully, an answer.

First off, 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)

It gives an explanation too: 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.

OK, so here are all the things I tried. 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 addre... Read more

A:IP Address Lease Denied by DHCP Server

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RELEVANCY SCORE 52

My Buffalo AirStation Draft-N WZR2-G300N does not aquire the IP Address from DHCP server. The status on the config page shows "Contacting".
I tried the buttons "Release" and "renew" but of no use.
I am now using it in Access Point mode, it works fine. Earlier i was using it with a static IP configuration, even here its working fine.
One more problem is i can't get to the router's config page in Access Point mode. I tried both 192.168.11.1 and 192.168.11.100!!

Thanks in advance for the help.
 

A:Buffalo AirStation does not aquire the IP Address from DHCP

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RELEVANCY SCORE 52

Hi -
I have an older IBM Thinkpad (365X) with Win95B. I have a Xircom Ethernet/56K Modem PCMCIA card, which I know works, since I can use it in other machines that I have.

I have DSL with a netgear router that has a DHCP server, which I also know works, since I'm using it to send this message.

I have reinstalled the adapter, all of the protocols, the client software, and the physical card in every way I can imagine, and cannot seem to get the machine to recognize the network. I checked the MS support site, and downloaded the Winsock2 patch. Didn't help. Still getting message about not being able to obain an IP address from the DHCP server. Most frustrating.

When I ping my own machine, I get an response with no lost packets. When I ping any of the 3 other machines on my local network I get a "request timed out" response.

If I hard code the IP address into the machine, I still cannot see any of the other machines.

I'm about ready to give up, so if anyone has any other ideas, please let me know.

Thanks

RT
 

A:unable to obtain IP address from DHCP server

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RELEVANCY SCORE 52

Hi,
 
I have a Vista Home SP2 64bit computer that had spyware issues.  I ran all common and some not so common tools to get to where nothing is being detected right now, but my wired LAN connection won't get a DHCP IP address.  If I assign a static address it works fine.  If I install a wireless USB adapter, it get a DHCP address just fine.  Before you ask, I did install the Vista hotfix for DHCP not working with some routers.  If ran into this before on other computer and just ended up reloading Windows but would like to figure it out with your help.
 
Tools I've ran, some more than once (not listed in order ran): Malwarebytes, Hijackthis, AdwCleaner, ComboFix, CCcleaner, Farbar SS, Junkware Removal Tool, MiniToolBox, rkill, RogueKiller, TDSSKiller, and other that I can't remember.  If I were to run them now, I'm fairly certain they would come up clean, but am willing to do whatever and learn!  I also ran these commands in a batch file I found on the forums:
 
@Echo off
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
cls
echo Script finished.
pause
 
Thanks in advance!

A:formerly infected Vista comp; no DHCP address

Since you already ran Combofix, its log should be thoroughly reviewed by trained experts before proceeding further. A log should have been created and saved to the root directory, usually C:\ComboFix.txt.Please follow the instructions in the Preparation Guide For Requesting Help starting at Step 6.If you cannot complete a step, then skip it and continue with the next.In Step 6 there are instructions for downloading and running DDS which will create two logs. (Note: Windows 8.1 Users will not be able run DDS and create a log)When you have done that, start a new topic and post the required logs to include your ComboFix log in the Virus, Trojan, Spyware, and Malware Removal Logs forum, NOT here, for assistance by the Malware Response Team Experts.-- ComboFix logs are not permitted in this forum.After doing this, please reply back in this thread with a link to the new topic so we can closed this one.

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RELEVANCY SCORE 52

Running Windows 7, periodically I get an events log message: "The DHCP allocator has disabled itself on IP address 192.168.2.1, since the IP address is outside the 192.168.137.0/255.255.255.0 scope from which addresses are being allocated to DHCP clients. To enable the DHCP allocator on this IP address, change the scope to include the IP address, or change the IP address to fall within the scope."
I want to continue using the 192.168.2.x /255.255.255.0 range so how and where do I change the DHCP allocator scope.
 

A:Setting DHCP Allocator IP address scope

I do see a discrepancy in the IP address:

192.168.137.0
255.255.255.0

192.168.2.x
255.255.255.0

The 255's mark which portion of the IP address is reserved for network routing and which portion is for computers/devices.

Basically, your DHCP server is handing out IP addresses for the 192.168.137.x network, but the Network card of the server is configured to be on the 192.168.2.x network.

I recommend changing the DHCP server scope to remove 192.168.137.0/255.255.255.0 and to hand out IP addresses for 192.168.2.0/255.255.255.0

Hopefully this makes sense.

-Fish
 

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RELEVANCY SCORE 52

I have a Linksys router model BEFW11S4V.2.

I have 2 laptops. Yesterday I downloaded a new software from a site called palace.com that is a virtual world type of site. Everything was fine until today for some reason I wasn't able to connect to the Internet. It says limited or no connectivity although the signal strength is excellent. I've tried several of the fixes mentioned on the Ask Linksys but I can't seem to get a connection although my other lap top is fully connected. I get a message that says that maybe the network hasn't assigned a network address to the laptop. I've tried ipconfig/renew and it doesn't respond. I'm not sure what I need to do to restore connection. It has the same issues with wireless broadband card and local area connection.

For what it's worth the Default Gateway is blank. Not sure if that helps in determining what's going on here.

Also, I turned off the windows XP firewall and uninstalled the Norton security and the palace software but to no avail.
Any help would be much appreciated.
 

A:Can't renew IP Address/No connection to DHCP Server

is this for both laptops ?

can you post an ipconfig /all for both machines and make sure we know which is which
also carry out the ping tests on both, again let me know which machine is which

makes and models of laptop
How the machines are connected to router
who the ISP is

the status of the lights on the front of the router
------------------
Ipconfig on Vista
Vista does not handle permissions the same as XP.
Locate the command prompt short cut in your start menu. Right click it, choose run as administrator, then try the ipconfig.

If you want to always have the command prompt run with elevation
Right-click the command prompt icon, choose Properties
Select the Shortcut tab
Click on Advanced
Check Run as administrator

How To Open Command Prompt From Right Click Menu:
Just hold down your Shift key and right-click anywhere on your desktop, in a folder or on a folder to open Command Prompt. The current location of Command Prompt will depend from where you open it.

------------------------

its important to do all the ping tests

1) Ping the default gateway
2) ping google.com by the name
3) ping google using IP address

all details below
ipconfig /all

TWO Methods to do that - some people have problems with ONE----

ONE ---------------------------------
start
run
cmd
ipconfig /all

rightclick in the box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste

TWO -----------------------------------------------

Start, Run, ... Read more

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RELEVANCY SCORE 52

Hi,
 
Full disclosure, this thread was originally posted to this location and moved to this forum: http://www.bleepingcomputer.com/forums/t/525140/formerly-infected-vista-comp;-no-dhcp-address/
 
I have a Vista Home SP2 64bit computer that had spyware issues.  I ran all common and some not so common tools to get to where nothing is being detected right now, but my wired LAN connection won't get a DHCP IP address.  If I assign a static address it works fine.  If I install a wireless USB adapter, it get a DHCP address just fine.  Before you ask, I did install the Vista hotfix for DHCP not working with some routers.  If ran into this before on other computer and just ended up reloading Windows but would like to figure it out with your help.
 
Tools I've ran, some more than once (not listed in order ran): Malwarebytes, Hijackthis, AdwCleaner, ComboFix(before I saw posting instructions), CCcleaner, Farbar SS, Junkware Removal Tool, MiniToolBox, rkill, RogueKiller, TDSSKiller, and others that I can't remember.  If I were to run them now, I'm fairly certain they would come up clean, but am willing to do whatever and learn!  I've update the wired LAN driver.  Windows reports the connection as "unidentified network" and it keeps setting the network type to public, and turning off network discovery.  If I set it a private network and enable network discovery, it still shows unidentified network.  After rest... Read more

A:formerly infected Vista comp; no DHCP address

Hi,
 
This doesn't sound like malware - especially considering that the PC worked fine on a different network. A cursory glance at your logs also suggests this isn't malware related.
 
As such, I'll close this topic.
 
I don't want to send you around in circles, but you could try posting in the Networking Forum for further advice.
 
Casey

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RELEVANCY SCORE 52

Hello, I'm trying to sort out an Acer Aspire 5050 laptop with Vista Home Basic (not too impressed with Vista so far).

The Internet was working ok for the end-user then stopped working for no reason.

I cannot ping external, internal or loopback addresses. Absolutely nothing, even when I have set it to a fixed IP address I still can't ping anything, even the loopback. A ping test gives a General failure response.

Also, it won't pick up a dynamic IP address. It only gets an autoconfig 169. address.

Any ideas anyone????
 

A:Vista - No Internet, Can't ping anything, can't get DHCP address

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RELEVANCY SCORE 52

I recently purchased a Nano station to boost internet signal when traveling in our motorhome. To set it up, I must change to IP address from DHCP to a static address. All computers in my home are operating on wndows 10. I am really confused as to how to do this. Will the correct address revert back automatically or do I have to know what it is and go back and change it back.
 

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RELEVANCY SCORE 52

I have virgin media cable broadband size L (4mb) at home with the standard cable modem which was provided by NTL few years back and a Linksys WRT54G broadband router. All works perfectly have one PC directly connected to router and another PC and a laptop connected wirelessly. DHCP assigns each computer with an ip address 192.168.1.101 etc.

My friend next door has cable broadband size XL (10mb/20mb not sure if it has been upgraded yet or not) he also has the same modem which was provided by NTL few years back and he has a very similar router the Linksys WRT54GS(one with sppedbooster).

The problem first occurred he tried to connect his xbox 360 to his wireless router, It wouldn’t assign an ip address, whereas if he connected to my router he had no problem at all. This was strange I thought because I set up his router and all the settings were the same as mine at home. I then tried to connect my laptop to his router, and the DHCP wouldn’t assign me an ip address, it either gave ‘invalid ip address’ or assigned me a private something address starting with 169.1…… and it would say ‘limited or no connectivity’ – which was no connectivity. We worked out that only one piece of equipment could be connected at once to his router, so the xbox would work if you disabled the network connection on my frinds PC which was connected directly to his router.

The only thing I could think of was that the router was faulty, so I swapped over the two routers and too my surprise my rou... Read more

A:Interesting problem with connection, ip address?, DHCP? help?

The first thing that comes immediately to mind is that at your friend's the modem is connected to the router's LAN port, but at your house it is correctly connected to the WAN port.

How about showing for a PC at your house and one at his house ...

Start, Run, CMD, OK to open a command prompt:

Type the following command:

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If necessary use a text file and removable media to copy the results to a computer with internet access.
 

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RELEVANCY SCORE 52

Dear Sir,

Pls take a look the description as below:

Cisco Equipment
2 x 3560 switchs (Core Switch)
4 x 2960 switchs

VLANs
- VLAN10 (server vlan)
- VLAN20 (User vlan)
- VLAN60 (Wireless vlan)

In the second vlan, a DHCP relay is setup on switch in order to redirect DHCP request to DHCP server that is located in VLAN10.

Question
I have 6 cisco switchs and setup 3 VLANs on it. Now, I want to add one more dhcp server IP address to the user vlan for redundant's use in case of the current dhcp server broken down, as I am not familiar with cisco command, can anyone provide the code as:

1. What is the command to show current IP helper-address?
2. What is the command to add one more DHCP server IP address to VLAN20 for redundancy?

 

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