How To Check Dhcp If Not Working

Jun 30, 2011

How to check dhcp if not working

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How To Check Network Cable Working Or Not

Nov 15, 2011

i connected network cabel to cpu network not geting ping also done,so can i check from multimeterLaptops internet connection keeps fluctuating

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Cisco VPN :: ASA 5520 - AnyConnect Check Endpoint Attributes Not Working

Mar 12, 2013

While user's connecting through AnyConnect, AnyConnect doesn`t check endpoint attributes. I've configured checking process  of "notepad.exe", but it doesn`t work. There is no checking process of  "notepad.exe" in output debug dab trace (see attach).

ASA 5520 ver 8.4(1)
AnyConnect 3.1.02040
HostScan     3.1.02043
CSD            3.6.6234

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DHCP Reservation Not Working

Apr 2, 2011

I'm using TP Link router. I went to DHCP reservation list and provided mac address of a computer and ip address to reserve the ip address for the computer. But it still not changing my current ip address. I rebooted router, rebotted computer, but it still not changing to the reserved ip.

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Cisco :: DHCP Not Working With Several VLANs?

Mar 25, 2011

i'm having troubles with a DHCP server, which is unable to give IPs to hosts that are on a different VLAN than the server.I have this little scenario, one L3 switch (SGE2010-48 without PoE) with 7 different VLANs configured in[CODE]

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D-Link DIR-655 :: DHCP Not Working For One Client

Feb 26, 2011

I recently upgraded from a WRT54G and am having issues with a Win7 PC with wireless-N. Initially I had it configured static at and everything worked, but the speeds were miserable (I followed all the forum posts and recommended settings). I noticed in the Status section of the router pages that the system showed up with the correct MAC address, but the IP showed as, which is the same as the router. Assuming this might be causing issues, I set a reservation for the system at .100 and set the client to use DHCP.  However, now it won't pull an IP address at all.  The status pages show the client with the correct MAC address, but an IP of  I've verified the MAC address a dozen times and rebooted the router and the client dozens of times with no change. Even when I removed the reservation, the system won't pick up an IP.  I have a wireless-G client that's pulling an IP fine, so I know it's sort of working.  The wired LAN is working fine, too.  There are no IP conflicts, either. I changed DHCP to 'Always Broadcast (compatibility for some DHCP clients), but no change there, either.  The client sees the network and still has a good signal, but just won't grab an IP.

I'm running Hardware Version: B1 /  Firmware Version: 2.01NA

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Cisco WAN :: DHCP Not Working On 877W

Jan 22, 2013

I have a Cisco 877W in place with an ADSL connection, which is working fine.  However I cannot get it to hand out a DHCP address.  If I associate with the AP over wireless then set a static IP I have full connectivity, similarly if I connect over Eth0 and set a static IP I have full connectivity.  So it does just seem to be DHCP.  Below shows my config... Any thoughts on the issue?  Is it access-list related?I have checked with Wireshark and I see the DHCP request being sent out, but I don't see a DHCP offer being returned

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Cisco WAN :: 2811 DHCP Is Not Working

Mar 18, 2013

My team and I are having issues getting this configuration to work. We are using a 2811 Cisco router in class and the DHCP is not working.  All other configurations for the other 2 routers are working but those were the easy ones. [code]

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Cisco :: 877W - DHCP Not Working

Feb 21, 2013

I've an 877W with four V LANS, All bridged (group) onto a BVI which is bonded to ATM etc for ADSL:  

1 is the backbone, and for the switch, and has DHCP running and working with no problems  - x.y.1.z  . Multicast is enabled so that various multimedia bits of kit can find each other. 
2 is the "primary" WiFi, which has android devices as they cannot handle SSID  not being broadcast or devices that can only do wep.(WiFi radio) it has DHCP, x.y.2.z which works fine.  Multicast is enabled so that various multimedia bits of kit can find each other. 
3 is a secondary WiFi for the kids, "hidden" ssid. They are fire walled so that bugs can't infect any other windows PC   DHCP  x.y.3.z. 
4 Is a secondary WiFi for our laptops, "hidden" ssid .
For some reason, DHCP is not working on  4. it was working until the good lady of the house quizzed why her net was not working... I've concentrated on vlan4, as there are no "local" access-lists definitions to stop anything. I've enabled debug ip dhcp server, and can see requests serviced on Vlan2, but not on  4, I've enabled/re enabled encryption/ shields on Vlan4, but still can't see dhcp requests arriving and do not see them being stopped somewhere.  I can see that the station authenticates OK,  but if I connect the same laptop to v lan 02, requests pour in and are answered, proving it's maybe not a Microsoft problem. 
Let me just say, I'm more or less self taught with the the net, no real  mentoring, so 'think' I have the general idea of the different layers,  access-lists etc. so this config is probably not ideal, but it works.

version 12.4
no service pad
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone

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Cisco Routers :: SA520 DHCP Not Working On DMZ

Nov 22, 2011

I am trying to configure the DMZ on my SA520 router but without success.After a lot of tests I reduced everything to a very simple test case that is not working: I setted the "Optional Port Mode" to "DMZ" and enabled "DHCP Server" in the "DMZ Configuration", but DHCP on the DMZ does not assign any address.I am wondering if my optional port is broken or not.

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Cisco :: DHCP Autoconfiguration Not Working On IE-3000

Jun 5, 2013

I have a Cisco IE-3000-8TC running 15.0(2) EY1 IES-IPSERVICESK9-M. I am trying to configure the switch to auto configuration (download only the configuration file and not the software image) via DHCP from a combination DHCP/TFTP server. When I configure the switch with the commands (on initial configuration): Code...

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Cisco Wireless :: DHCP Not Working Via WAP321?

Dec 10, 2012

I have a RVS4000 witch I use as router, and DHCP server. I have a WAP321 witch I have configured SSID with one VLAN. Both devices have fixed IP address. I can connect computer to the wifi access point. But the computer cannot get an IP address from the DHCP server of the RVS4000. If I set the IP configuration manually, it can get an access to the network and Internet.
With another wifi access point it works, the computer get an IP address for the DHCP.
What should I have to do to make my DHCP server works with my wifi access point ?

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Cisco Switches :: SGE2010 - Cannot Get DHCP Working

May 28, 2013

We have a single SGE2010 in layer 3 mode switch with a Server 2008 DHCP server.
We will be implimenting a Voip netowork where the PC's connect to the voip phone. I would like to create another vlan - 10. I have created the vlan and assigned the IP on the swtich.
Routing seems to be working. I can ping both IP addresses of the switch on either vlan.
I cannot get DHCP working. In the SGE switch I have enabled DHCP Relay, enabled option 82, set my DHCP Interface as VLan1, and specified the DHCP servers IP address. On the ports I have set the port where the DHCP server connects to as a trunk port with Vlan 1 untagged and vlan 10 tagged. I have set the ports where the phones connect as a trunk port with vlan1 untagged and vlan 10 tagged.

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Cisco Wireless :: New 5508 DHCP For Management VLAN Not Working?

Sep 25, 2012

I have a new 5508 that I am setting up.  My first one from scratch.
managment -> ->dhcp
voice -> ->dhcp
guest -> ->dhcp
Local DHCP (via the 5508) is for the guest network while the management and voice use the Windows DHCP server.
My problem, Voice and guest work fine.  I have two SSID's (one 802.1X and the other PSK) that use the management interface that will not get an IP.  I have enabled  dhcp proxy from the cli on the controller.  I tried with the management VLAN tagged and untagged.

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Cisco Wireless :: WLC 2504 - Internal DHCP Server Not Working

Mar 25, 2013

setup a DHCP server on a WLC 2504. I'll try to resume my configuration:
I have 2 networks: inside users (vlan 1) and external users (vlan)
My controller uses the port 1 to connect to the switch, which has a trunk with WLC.
I have two routers, one using vlan 1 ( and one using vlan 10 (200.X.X.X). All ports to these routers are access ports on their respective vlans.
I have 2 SSID, one for inside, other to outside. Inside is working very well.
To the outside I created a DHCP escope and already set the IP of the management interface
Managemente interface (vlan 1 inside):
Outside interface (vlan 10): 200.X.X.195 - Default gateway 200.X.X.X.193
I alredy checked the DHCP Proxy in Advanced option.
See the output of the debug client:
(Cisco Controller) >
(Cisco Controller) >
(Cisco Controller) >


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Cisco Switches :: SG300 DHCP Static Reservations Are Not Working

May 19, 2013

I'm having troubles with this firmware in a SG300-28 switch. Actually the DHCP server, a new feature in this firmware release, doesn't work correctly. DHCP static reservations are not working: CLient ID and MAC address are not recognized correctly, and the DHCP server assigns the first free IP in the pool, rather than the reserved one.If Cisco engineers read this, plese correct the issue.

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Cisco Switching/Routing :: 3725 - DNS Not Working After DHCP Server Config

Jan 24, 2013

I seem to be having a problem with DNS name resolution after configuring my router (Cisco 3725 running IOS image: c3725-adventerprisek9-mz.124-25.bin) for handling DHCP requests.
Before I made the change, everything was working correctly; I could ping from a computer inside my LAN and would get response from one of Google's public IP's like normal.
I had a separate DHCP/DNS server running Windows Server 2008 handling the DHCP request and DNS queries.
When I made the change, I turned off the DHCP/DNS server and issued the following DHCP commands to my router:

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Cisco Switching/Routing :: 2600 DHCP From Service Provider Not Working

Feb 7, 2013

So I have  a 2600 that I have configured three sub interfaces on. FA0.0.1 is set for DHCP and supports VLAN 1. FA 0/0.2 for Voice, FA 0/0.3 for Data. I have this router interface plugged into FA 0/24 on my 3550 and the 3550 is configured as a dot1Q trunk (I have attached configs for RTR and SW).I have most ports configured as access VLAN 1 which is where i have my ISP connection plugged FA0/1 on the 3550. When I connect the service provider link FA0/0.1 never picks up an address. If I take my internal DHCP server and connect it to FA0/1 of the 3550 it snags an address almost immediately.In my mind this validates that my config is fine. I also took the same cable from the service provider cable modem and connected it to my laptop and the laptop is pulling DHCP.

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Cisco Switching/Routing :: P3750-E - Port Based DHCP IOS 15 Not Working

Apr 9, 2013

I am upgrading from 3750-E IOS 12.2 to 3750-X IOS 15.0
I have a dhcp pool set up to give out an ip address based on the Physical port of the switch.  I also have it configured to give out "reserved only" addresses.
The configuration works when i plug a dhcp device in the 3750E. (IOS12.2) The configuration does not work when i use the same config on 3750X (IOS15)                  
When i debug dhcp, i see the DHCP discover message come in, but no offers or anykind of response from the 3750X.
If i remove the "reserved only" line the switch gives out IPs, but of ocurse not the ones i want.  I did that to prove both the client and the switch can give out an IP.
So i have a feeling the subscriber-id client-id interface name  mapping is not right, or not created.
Here is a snippet of config.
no ip dhcp use vrf connected
ip dhcp use subscriber-id client-id
ip dhcp subscriber-id interface-name


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Cisco Switching/Routing :: 3750v2 DHCP Snooping Not Working Dropping Packets

Jan 9, 2013

I recently installed DHCP snooping on a 3750v2 switch (Version 12.2(55)SE4) and configured the uplink(Po2) as a trusted port. The problem is that clients cannot receive an IP address. When I disable DHCP snooping it is working properly. DHCP snooping is configured correctly but I don't have an idea how to resolve it. [code]I tested the solution on the same kind of hardware switch and firmware and it worked out fine. What is causing the clients not to receive an IP address from the DHCP server?

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Dell 1390 WLAN Mini-Card / Can't Connect To DHCP And Port Forwarding Not Working

Dec 22, 2011

The first is I have a laptop running XP with a Dell Wireless 1390 WLAN Mini-Card built in to it. But for some reason when I'm using that wireless connector my computer won't connect to my router and give me a 192.168.0.x address, it gives me a regular IP address. I can surf the net and everything but I can't access files on other computers. But from it it'll allow me to connect to the router admin fine.Whenever I put the mac address in to my DHCP setting on my router it comes up * RESERVED INACTIVE * and never gives my laptop a local ip address.The other problem is on my computer I've tried to set up port forwarding but it won't open the ports. My router is a Motorola SBG6580 provided by my cable company. This particular computer is connected by Ethernet and not Wifi if that makes a difference.

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Cisco Switching/Routing :: Apply DHCP Snooping On 4500 Series Switches Working As L2 In Network

Sep 25, 2012

I need to apply DHCP snooping on 4500 series switches working as L2 in my Network. We have external DHCL Server in another location connected with 6500 series switch.   
Running EIGRP                                                      Configured Voice & Data Vlan both
DHCP Server -------- 6509 switch<----------------------------------->6509 Switch -------- 4500 switch ----------------------------------------------------------Ip Phones.               
(ving Redundant)                                  (ving Redundant)   
I need to know whether the configuration which I mentioned in scenario is enough for apply DHCP snooping in my network.

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Cisco Routers :: RVS 4000 HTTP Management Interface Hangs At Port 80 And DHCP Stops Working

Dec 1, 2012

This is the RVS 4000

Firmware version
STAR 9202 Chipset
8MB Flash
 DOS, Block WAN Rq, Remote mgmt all OFF
IPSec Tunnel none used

Every day or so the Router becomes unresponsive to the HTTP mgmt interface, as well as it no longer offers DHCP services.then this happens the only remedy is to power reboot.

Everything comes back online just fine, however, the LOGS are initilaized so no data to figure out what`s going on.My next step is to setuo a syslog server and have the logs copied out.(  No, I have no Torrents running at all, but I do have several devices like AppleTV, PS3s etc that run streaming Video plus I have the SPA3102  )

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TP-Link Dual-Band Wireless :: DHCP Not Working For 6 GHz Band?

Apr 2, 2013

Region : UnitedStates
Model : TL-WDR3600
Hardware Version : V1
Firmware Version :
ISP : Centurylink

I'm using a WDR3600 router, and I'm having difficulty with getting internet access on the 5 GHz band. Right now the router is broadcasting in both 2.4 and 5 GHz as two separate APs. The 2.4 GHz band works perfectly fine, but when I connect to the 5 GHz band my device is not assigned an IP address and cannot connect to the internet (or even the router configuration page). Unfortunately, I don't have another device capable of accessing the 5 GHz band, so I can't check to see if the computer is at fault, but both the computer and the router have worked together with no problems before, and this computer has done fine in accessing other 5 GHz bands.

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Check Your IP Address In Just About 3 Second?

Feb 28, 2012

Simply one step away to check your IP address: type into your search box in your browser the following address


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Cisco ASA Or Check Point

Feb 28, 2011

I have a question for all those here who have experience with both Cisco ASAs and CheckPoint.Which do you prefer Cisco ASA or CheckPoint?

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Check The Users That Logged Into PC?

Mar 27, 2011

Some1 browse my PC via LogMeIn Hamachi, so i need 2 know who did that , how 2 see the log list?

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Check Others IP Address And Location?

Sep 4, 2011

How do I check IP address of others, when in chatting or playing online game, I could only know that he is Mr. X from YZA country which appears on Screen, But I also know he is using with wrong name and wrong Country name.I would to check his IP as well as his Place?

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How To Check Transfer Speed

Jun 12, 2011

I want to check the transfer speed between my PC and another IP.The IP belongs to a DVR here is the general schematic of the sistem:Digital Video Recorder - Dynacolor - DynaGuard H.264 DVR (nDG80 - nDG600 - DG200) & DynaHawk Speed Dome & IP CamerFirst when I've worked with this system everything worked well but now after three weeks I have to open 5 ore more internet explorer windows to see live image and I can't see the recordings.I need to know the speed transfer because I want to know if someone had decreased my transfer speed between my PC and the router or DVR.

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How To Check Which Users Are Using IP Printer

Mar 4, 2013

How to check which users are using printer. so that i can see which user are using more printer.

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How To Check LAN Connection Speed

Nov 27, 2012

How do i check my LAN connection speed- is the same as the speedtest t I run from the internet ?

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How To Check My Wireless Speed

Aug 8, 2011

At one time a windstream (my internet provider) had talked me through a way to check the speed of my connections for my wireless network....I can' find the bookmark this was. How I can check this?

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How To Check Listed Ip On The Server

Sep 8, 2011

how do i check the listed ip's on my server?

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