Cisco Wireless :: 871w Configuration - Clients Do Not Get DHCP IP
Jan 27, 2009
I know this question was asked many times, but I'm still not able to finalize my configuration on 871w. LAN part works fine, but wireless clients do not get DHCP IP. here is the config:
Building configuration...
Current configuration : 2092 bytes
!
version 12.4
no service pad
service timestamps debug date time m sec
service timestamps log date time m sec
no service password-encryption
!
[ code ].....
I'd like to have LAN and WLAN clients in same 192.168.1.0 sub net.
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Nov 5, 2012
I have a problem with myself a few other clients randomly disconnecting from my 871W. It appears that I am still associated but Windows 7 shows "Limited Access". I appear to be assosciated to the AP and I still have my ip address but I can't ping the 192.168.1.1 gateway (871W). I have also set my power plan to allow for Maximum Performance which I thought disabled PSP but the log is still showing errors.As a final note, after I reconnected by ip address (192.168.1.107) doesn't show up in "sh ip dhcp bindings" but I'm working.To correct the situation, I have to disconnect and the reconnect to the AP and then I am good for another day or close to it. Below are the log errors, config and a sh ver. [code]
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Jul 8, 2012
Recently, I purchased a Cisco 871W Router with which to practice/study for my CCENT with. Since I have made the purchase, it has given me nothing but headaches.
I cannot access the router to configure it, as the previous owner has a password set on it to access enable mode, which he/she has forgotten.
Here is the message that I receive when I attempt to log in into the router, to access enable mode. [URL]
Apparently there is supposed to be a one-time username and password of "Cisco", but this is not the case.
I have tried to do a password recovery, following this post discussion thread: [URL]
Unfortunately, this has not worked, and I am sure that I am doing something incorrectly. I am connected to the router via console cable and have tried power cycling the router and entering the break sequence, power cycling again, and then holding the space bar down for 15 seconds. The preceding has produced no results to speak of. Following, I set my terminal emulator, Tera Term, to the baud rate of 1200, power cycled the router, and held down the space bar for 20 seconds. I then immediately set the baud rate back to 9600. Nothing occurred, once again.
Furthermore, I have followed the password recovery instructions set forth by Cisco. [URL]
Nothing has come of these methods, either, and I do not see how they would work, or even apply to my situation, as Cisco seems to imply they should, as I cannot get into enable mode, let alone privileged mode or conf t mode, as the guidelines require.
Here is some info for troubleshooting:
OS: Win 7 HP 64 bit
Terminal Emulator: Tera Term
Router is not currently connected to any sort of internet connection. Only the power cord and console cable are properly connected.
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Mar 8, 2009
I'm monkeying around with an 881-W. Clients can associate and authenticate to ssid 'test', but they cannot get a DHCP address. Clients plugged into f 0 - 3 get DHCP addresses just fine.
I've looked at a lot of different guides, ran debugs etc. When wifi clients make DHCP requests the server never gets them. So there must be some IRB thing going on.
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Mar 29, 2012
I have new 2504 WLC + 1041LAP. I configured the first DHCP scope on WLC and the first WLAN. Then I set WLC DHCP server in WLAN properties and tried to connect to WLAN with wireless clients.
My wireless clients are able to authenticate on WLAN, but not able to get IPs from DHCP. The only lease that DHCP shows is for 1041LAP.
If I set permanent IPs on my wireless clients, they can connect and ping WLC.
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May 27, 2012
My company AP 1231G is not passing the DHCP address to the client from the DHCP server, my config listed below basicly the AP is on its own VLAN 10.1.123.1 and the DHCP server is 10.1.10.2 -- trying to use iphelper to pass DHCP to clients and the AP is on static IP 10.1.123.2--
!
! Last configuration change at 13:15:56 +0800 Fri May 25 2012 by root
! NVRAM config last updated at 13:15:56 +0800 Fri May 25 2012 by root
!
[Code].....
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Jan 16, 2013
I have a 4402 (version 7.0.235) working with 10 units of 1121 APs connected to it. The WLC is not configured to work in LAG mode. Physical portt #1 is connected to the Main Switch (trunk). I have 3 WLAN mapped to 3 Different VLAN and Everything (security and internal, external DHCP) is working swell...Now- I have connected Physical port #2 directly to an ADSL Router (giga port), Configured Port 2 as untaggedwith the proper IP details.I have configured this interface to receive DHCP from the ADSL Router and for some reason, Clients are not getting addresses.When I assign a Static address to my laptop I get internet access and all is nice. I tried configuring The WLC internal DHCP server (instead of the ADSL router) and that didn't work. It seems like a DHCP problem but I dont understand the source of the problem of think of the solution.When turning off the proxy settings I noticed that it worked. Is there anything to do with that? The problem was that after a while the other WLANs starting causing DHCP issues as well.
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Feb 5, 2013
I have 19 locations, each with 1 or more LAP1142N AP's in FlexConnect mode, AP's are primed using CAPWAP to my 5508 WLC at the datacenter. The AP's join the WLC without issue every time. I have two WLAN's, one guest and one staff, the guest network is open and obtains DHCP from a WatchGuard XTM33 firewall at each of the remote locations. The staff side is WPA2/RADIUS and DHCP is assigned from the WLC. Each AP is assigned a static IP that is not in the DHCP scope. For example: DHCP scope on the branch firewall is 192.168.1.10-250 the AP will be assigned static IP of 192.168.1.1.. The AP's are connected to a HP procurve switch that has a untagged VLAN, the firewall is using the native vlan 1 and so is the AP.
I have been running this network for over a year and it has not had a single issue until the last two weeks. Nothing on the network has changed or has been upgraded.The issue I am seeing is that clients are no longer able to connect to the AP and do not get DHCP assigned to them. I am able to get it working, if I remove the static IP from the AP, the AP will reboot, join the controller, then begin working, users can connect and DHCP is assigned from the firewall as it should. However, If the AP then reboots, the AP will join back to the controller but no clients can connect nor do they get a DHCP address. So, I then reassign a static IP to the AP again and it reboots, connects to the controller and clients then can connect and get DHCP.i've found several posts on this topic, in fact the patch of unassigning or reassigning static IP is one that I found. I am also waiting on my SmartNet to start up and will be contacting Cisco support as well.
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Oct 9, 2012
I have a Cisco RV220W running the latest firmware (currently 1.0.4.17), and I have noticed that after about a week of use, wireless clients can no longer acquire IP addresses via DHCP.
I have used Network Monitor on both the DHCP server, and the WiFi client, and can see that the server is receiving the requests and sending a reply, but the client never sees the response from the server. So far the only way to resolve this is to reboot the router.
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Sep 9, 2012
Environment:
1. Core switch - Catalyst 6509e
vlans configured:
a. vlan 50 (wired clients)
[Code]....
here's the problem, wireless clients connected to WLAN guest keep getting DHCP leases from WLAN local 10.0.50.10 (scope 10.0.70.101 to 200)
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Jun 24, 2007
Here at HQ we have a 4402 WLC. At our remote sites we have 1231G APs running in autonomous mode. I upgraded one of the APs -- IOS 12.4(3g)JA -- to run LWAPP. Per release notes I've read upgraded 1231's do not support REAP/HREAP mode, consequently, it's running in LOCAL mode.
The AP is managed by the WLC. I created a WLAN for the remote site and assigned it to the MGMT interface; the remote site subnet doesn't exist in HQ. The DHCP server for the remote site is presently at that site; AP and DHCP server reside at the same place.
Clients authenticate successfully to the remote site AP, however, they are not getting DHCP addresses assigned. Does the DHCP server for the remote site have to reside in HQ since the AP is running in local mode? If so, where is that specified, on the MGMT interface config?
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Aug 17, 2011
I'm setting up a Cisco Aironet 1141 (standalone mode, AP) to handle wireless traffic in the office. It gives out 2 mbssids, one of which authenticates domain users through a RADIUS server and places them in an appropriate VLAN (RADIUS options 64, 65, and 81). The other is a guest ssid that uses WPA-PSK and places users in the restricted guest VLAN. Physically, the AP is connected to a 3750 PoE Catalyst, to which RADIUS and DHCP servers are also connected. AP, SSIDs, RADIUS and EAP authentication all work. The configuration given below is a working configuration. People do get authenticated and do get placed in the appropriate vlan. The problem is that, once authenticated, the "Obtaining IP Address" phase on the client hangs and most clients timeout without getting an IP address. Given that the DHCP server is on the same switch and a test simple ASUS Wi-Fi IP gives out the same scenario (except the multiple VLAN) at the speed of light, I don't think that it's a problem with the network connections between clients and the DHCP server. After reading some topics here, I realized that probably other communication will be extremely slow, as well, but haven't tested that for sure. Clients are all non-Cisco - smartphones, notebooks, etc. Most of them are 802.11G, not N.
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Aug 24, 2011
I have a (single) client (it is a cisco IOS router) behind a wireless workgroup bridge (cisco1242).The client's IP address is obtained via DHCP from the wired network.Now, when roaming occurs, the Client will never have knowledge about this event,and hence will not renew its IP address until lease expiers. This is not a problem of course when Layer 2 roam occurs, but with Layer 3
roam it will interrupt the traffic.
The cisco's IP Mobile implementation does have this issue addressed in DCCoA scenario: the WGB is configured to send an SNMP trap on its dotradio state change;the cisco mobile router is configured with snmp-server manager to process this trap and start DHCP renew on the Down/Up event. Unfortunately, this works in Mobile IP scenario only because I cannot make it work without the mobile router registered with a home agent.
how to force DHCP renew on a client (cisco IOS router) in such a situation - event scripting, SLA, or ...?
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Dec 27, 2012
Is there a way to get the E4200 to NOT provide itself as a dns server to the DHCP clients? I have the unit set up to provide two dns servers to the clients, but the 4200 always provides itself as a third and it uses my cable providers dns servers. I am using a dns based filtering service to prevent certain material from being accessed within my network as the first two resolvers. So long as both or one of the provided servers is working it doesn't fall back to the unfiltered third, but I would prefer to remove it entirely.
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Nov 24, 2012
The router always inserts its’ own address as the primary DNS server for the all DHCP clients even though you have set the DHCP server on the router to assign manual external addresses?
Oh I have a
WRT310n v2
firmware v2.0.01 build 004
Let me elaborate a little so I am clear what I am saying. On the router setup page go to the section that is labeled “DHCP server settings” enter 3 static DNS servers. Say 2 Google and one open dns.
8.8.8.8
8.8.4.4
208.67.222.222
Apply your settings.
Release your ip on your workstation, then renew it. And look at your DNS, the routers address is still the first entry.
DNS Servers . . . . . . . . . . . : 192.168.1.1
I suspect this was probably a design decision so that they could allow a user to open their web browser and type something neat like [URL]. Which for the average user is fine and dandy. If my ISP didn’t suck and try to redirect everything to cached copies I probably wouldn’t have noticed it. But since I end up using the router for DNS and it picks up DNS from my ISP I end up getting Akamai IP addresses, and they have problems with SSL certs…. So you get errors.
I know I can go set the DNS server settings on the workstations. But I really don’t want to do this on all of my devices as they are mobile and switch networks, and on some networks not using the local dns breaks things. Like on the corporate network.
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Oct 30, 2012
with our WLC 5500 controller, once the clients get the DHCP address the page is not redirecting them to the guest portal.What is the best way to check as to why the redirection is failing.
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Jul 3, 2012
I've got an E4200v1 running 1.0.04 firmware with guest access enabled. I'd like to find out who is logged in using the guest access. Is there a way to get a list of the DHCP clients on the guest network? I'm able to do this for the non-guest access via the WEB interface's Status->Local Network->DHCP Clients Table page. But I can't find a similar table for the guest network.
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Feb 5, 2013
Recently I have installed and configurated an AP 1260, it has already IP, SSID, and ping to the router, but after install the antenna I open the web configuration and see that it has 0 clients connected and the light is always green, indicated as only is configurated with nobody connected.
Tha radio setting is up, 2,4 Ghz and 5 Ghz any issue with the antenna? or i need to configure anything else?
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Jun 30, 2011
I'm trying to understand my options for assigning addresses to VPN clients on an ASA 5510. Under the ASDM, I have a field for DHCP servers, radio buttons: none, dhcp link, dhcp subnet, and field: client address pools. Cisco's VPN examples demonstrate setting up a client address pool, which I did, but the VPN client isn't assigned a gateway in the process so it can't connect to anything; I really don't understand the point of this. I'd like to create a DHCP pool on the ASA for VPN clients as this seems to be the standard configuration. However, I don't know where in the ASDM to configure this and how it's applied. The only DHCP options I found involved creating a DHCP server on an interface, which I don't want to do since VPN users aren't on a physical interface, right?
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Sep 29, 2011
When on the management interface the clients can't get dhcp but the AP's can on the same vlan. I've tried enabling and disabling dhcp proxy, and using a remote dhcp server as well as the internal server. This same config works on the 4402 we're replacing with version 5.2.193 on it.
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Jan 20, 2011
I've got a 2106 that I'm installing for a customer and having issues with it assigning DHCP to WiFI clients. What's odd is that this was working at one point at home during testing. Only difference at this point is LAN hardware at the customer location.
Simple config- single flat vlan on Cat2960G switch, ASA5505 serving up DHCP for the network. Wired clients are receiving DHCP fine.
Mgmt IP192.168.0.10/24Mgmt Gateway192.168.0.1Mgmt VLAN0Mgmt Int port1Mgmt DHCP server192.168.0.1AP Mgr Int IP192.168.0.11Virtual GW IP1.1.1.1RF group namerfgrp1SSIDxxxxClient Static IP?noCountry Code802.11a/b/g statusenabledRadio resource mgmt statusenabled I've run dhcpd debug on both the controller and the ASA and I see the DHCPD requests on the controller, but I never see them hitting the ASA.
I don't have the specific version of code it's running, but I know it's 6.0. One of my local Cisco account engineers found some Cisco CSC bugs referencing this issue. One TAC cas even referenced stripping all security off the WiFi, connecting the client and then reimplementing the security again.
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Aug 2, 2011
When I go into the Network Settings, and the end of the page I find a list named "Number of Dynamic DHCP clients: 7". As far as I know, I should only see 4, all 4 laptops; however, I see 2 UNKNOWN entries in this list, and one name "Macondo". Each of these entries have an option (a link) saying "Revoke" and other "Reserve". I am just wonder if these entries are intruders in my home network. What should I do? I am afraid to break my internet connection. By the way, I set up every single one of my family 4 laptops at home with a WPA-PSK using a very long key.
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Jan 6, 2013
I've just discovered this thing in Windows Event log. The DHCP-Client log is full with this: the client received a NAK from the DHCP Server. Strangely, they still get the desired IP address. (Which are reserved adresses for the MAC adresses.)So I've looked at the logs in the DIR-615 (rev.D, FW: 4.13), and found this:
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Apr 10, 2012
I recently upgraded a clients WLC and they keep saying they are unable to get an IP address from the DHCP server. It's a simple, flat network and here is what the logs are showing.
*apfReceiveTask: Apr 11 13:37:25.477: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:37:17.278: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:37:05.880: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:13:47.397: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
[code]....
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Mar 29, 2012
I would like to share one problem with WLC 5508 . we added a new virtual interface on the WLC. One new SSID is associated with this interface.
We created a ACL for this interface to restrict the access via WIFI to certian services. It´s not correct that everything works fine because the change were not applied. [code]
The changes of the ACL are applied on the fly, but for reason we don´t know, the clients don´t get a DHCP IP-Address (after changing the ACL) until the Controller is rebooted.
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Jan 11, 2013
I have successfully configured my DHCP server because I can ping it from the clients PC and my clients PC automatically grabs IP from my DHCP. How my clients can have access to internet. Here is my hardware setup: 1. I connect clients PC and one DHCP server in one unmanaged switch2. I have my Bell DSL Modem but not connected yet to one of these machines. I do not know how I can configure it yet to work with my machines.The IP I assigned started at 10.10.200.10 to 10.10.200.90How do I connect the DSL and configure so that it may give everyone access to internet?
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Jul 11, 2012
I have a few sites using the RV042 with wireless access points and some of them have over 50 devices.In reviewing the documentation (specifically,[URL]), I came across this:Enable DHCP server: Check the box to allow the router to dynamically assign IP addresses to up to 50 connected devices. Uncheck the box if you have another DHCP server on the network or you want to configure static IP addresses for your network devices.Is this accurate? Or will the RV042 allow more than 50 devices?
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Nov 26, 2012
Is there a way on the security appliance SA520 to remove someone from the DHCP lease client manually rather than setting the DHCP lease time to expire in less time like 4 hours or 2 hours. I was able to do this on other routers by highlighting the connected device and click remove. If not any recommendations on how to handle the device that are attached via DHCP and the person is no longer here, but the lease time is not up. I have set DHCP lease time to 4 hours.
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Nov 14, 2011
So here's what I think I should do to give email access only to a segment of addresses of my inside network.
1) Create a network object for 62 machines that will represent my dhcp clients.I plan to use 192.168.0.65-192.168.0.126. So I will use address 192.168.0.64 with netmask 255.255.255.192. Then set DHCP server to service this address range.
2) Create an ACL which will Permit Any to use tcp port 110 (pop3) to get to the outside. Which leads me to question #1:
How do I permit the source "Any" to communicate with "Any Less Secure Networks" like the implicit rule that gets zapped once I create new ACL? Is "Any Less Secure Network" implied by the "Any" destination?
3) Create an ACL which will Deny my DHCP range to talk to the outside.
4) Create an ACL which will Permit Any to talk to Any Less Secure Network(essentially recreating the implicit Permit ACL that got zapped).
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Jun 4, 2013
All the SOHO routers I have used had a table which shows IP, MAC, Name, etc. In this table, I could easily put a check mark to a check box in a row that I would like to bind/reserve and IP would be reserved for that specific MAC.
In ISA570W, when I need to reserve/bind an IP to a MAC it asks me to fill out a table in which I have to manually type in the name, IP, and MAC.
Is there an easier way?Is there a way to do the reservation for multiple clients at once?If this is the only way, do I need to copy the mac address of each client somewhere and then reserve IPs for each one manually? This method looks very far from user friendly and efficient, unless there is a very logical reason that I cannot think of.
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Jul 8, 2013
I have the dhcp server setup and working on our main 3560x.
The only problem is that it is not assigning the dhcp clients a default gateway.
I was not able to find it in the Cisco documentation and a google search is not useful either.
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Dec 16, 2012
We have 6 aironet 1140's throughout the office I have them all configed as one ssid but I would like the DHCP to come from our Windows server. Right now I have set them up with ip dhcp pools. So what is the secret to get them to send dhcp requests to the Windows server?
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Jun 6, 2013
I have to configure DHCP on Aironet 1100 WAP so wireless client will get IP address through WAP. I tried all the option mentioned in Document but nothing is working.
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