Cisco Wireless :: Internal DHCP Server On 4402 Controller
Apr 8, 2008
I am trying to setup a guest vlan. I set up an interface for the guest vlan on my 4402 controller. I assigned the guest vlan interface an IP of 192.168.2.10 with a 24 bit subnet mask.
This vlan will go to my DMZ where there is no DHCP server so I need to setup the internal DHCP server. I created a new scope but I'm having trouble with what to put in the Network field for the DHCP scope. The pool addresses are 192.168.2.100-200. with a 24 bit subnet mask.
Every time I try to apply the configuration I get an "error in setting DHCP scope network and netmask".
I've tried using:
192.168.2.10
192.168.2.255
192.168.2.254
as entries for the Network setting but no go. The docs say to enter the IP address used by the management interface with subnet mask applied.
I was assuming they meant the interface for the guest vlan.
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Apr 17, 2012
I have successfully implemented wireless guest access using 4402 WLC as the Anchor and 5508 as Foreign. The Anchor controller also provides dhcp services to guest clients. The 5508 is LAGged and there is no issue with the guests traffic separated from corporate. At a remote site, there is a 4402 WLC using LAG and also acting as a Foreign controller. But when a client connects to the guest WLAN, it obtains a corporate dhcp address instead of the dhcp address assigned from the Anchor controller. The guest WLAN setting is the same as with the 5508 controller i.e. DHCP server override is ticked and the management IP address of the Anchor controller is specfied. Also DHCP Addr required is ticked. Why the 4400 controller is not forwarding dhcp requests to the anchor controller and instead sending to the corporate dhcp server.
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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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May 7, 2012
I am hoping to get your feedback around the dhcp issues I am facing with Two Centrally Switched Wireless LANs. The setup is as follows:
- I have a WLC 5508 which has been configured with 4 SSIDs, out of which 2 are using Central Authentication and Switching. - I have an LWAP connected to the WLC in HREAP mode. - WLC is configured as the DHCP server for clients connecting to the SSID 'Guest'. For the rest, I am using external dhcp server. - Only one scope for Guest Interface is setup on the WLC.
Problems:
1. As far as I know, for WLC to act as internal dhcp server, it is mandatory to have the proxy enabled, but the Clients connecting to SSID 'Internet' are unable to get an ip address from the external dhcp server, if dhcp proxy is enabled on the WLC. If i disable the proxy, it all works fine.
2. DHCP does not release the ip addresses assigned to clients even after they are logged out.
3. If a machine which was earlier connected to 'Guest' SSID connects to the 'Internet' SSID, it requests the same ip it was assigned by the WLC which it was assigned under 'Guest', but gets tagged with the V LAN configured on the management interface.
************Output from the Controller********************
(Cisco Controller) >show sysinfo
Manufacturer's Name............. Cisco Systems Inc.Product Name................ Cisco Controller Product Version................. 7.0.116.0Bootloader Version................ 1.0.1Field Recovery Image Version..................... 6.0.182.0Firmware Version..... FPGA 1.3, Env 1.6, USB console 1.27Build Type.......... DATA + WPS + LDPE
[code]...
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Jul 21, 2012
A client wants us to use the internal DHCP server on a 5508 instead of Windows DHCP. They will have 15 APs initially and upto 25 later. The docs on the 7.2 WLC make it sound like this is discouraged: Internal DHCP Server.
The controllers contain an internal DHCP server. This server is typically used in branch offices that do not already have a DHCP server. The wireless network generally contains 10 access points or fewer, with the access points on the same IP subnet as the controller.
In this case, the APs will not be in the same subnet as the Managment Internet.Is it a mistake to use the internal DHCP with upto 25 APs (3 WLANs)?
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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 (192.168.3.0/24) 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 192.168.3.119.
Managemente interface (vlan 1 inside): 192.168.3.119/24
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) >
[Code].....
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Jan 12, 2012
How to clear dhcp lease in WLC 6.0.199 from the IP leased from internal server?
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Apr 5, 2012
I've got a new CT2504 controller with software version 7.0.220.0 Regarding to [URL]I've tried to configure the internal DHCP on a dynamic-interface, but this is not possible:(Cisco Controller) >config interface dhcp dynamic-interface vlan401 primary 172.16.x.3 vlan401 Interface IP can not be used as internal DHCP server IP It works, if I use another IP (aka DHCP server) in the same subnet or in another subnet. It works also for the management interface.
(Cisco Controller) >show interface detailed management
Interface Name................................... management
MAC Address...................................... d0:c2:82:xx:xx:xx
IP Address....................................... 10.2.x.135
IP Netmask....................................... 255.255.255.240
IP Gateway....................................... 10.2.x.129
[code].....
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Dec 5, 2012
We have a 5508 controller authenticates with WPA2-enterprise to 3 possible AAA servers. Today I tried migrating our DHCP server from a Windows 2003 machine to Windows 2008 R2. Migration went smoothly and all wired clients could get IP's. Reservations intact, scopes intact, etc.. you name it. I though it was a great success.
Fast forward about an hour when people started coming into work for the day. Calls started coming in about their laptops not able to connect to the network. I double checked with a spare laptop in our IT department and also my iPhone. Same issue. Seems the only thing I changed today was the DHCP server (from 10.1.1.1 to 10.1.1.2).
After racking my head on it for awhile, I re-enabled the "old" dhcp server (10.1.1.1) and disabled it on the new (10.1.1.2). Instantly wireless clients were able to connect.
Am I missing some configuration step in the 5508 controller when moving DHCP servers? I do plan on running 2 DHCP servers (10.1.1.2 and 10.1.1.10) for redundancy once I get the primary one moved over and working correctly.
I want to decommision the older 2003 server. Its time to raise the domain functional level.
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Nov 29, 2011
I have been trying to create a Guest WLan on my 4402 WLC system and have found several confilcting documents explaining the procedure. During this process I have notices that although the current corp wireless works, there was never a virtual interface created for it. Instead it uses the same Wlan/Vlan as the ap manager and managemnt interfaces. Could this by why I cant seem to get the Guest access working? or is this not a problem after all since the wireless does work.
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Jun 30, 2010
We Have a WLC-4402 controller with LWAPPs and different VLANs and SSIDs. I've configured a Linksys WET200 to associate to one of the SSIDs.On the WLC I can see, that the WET200 is associated to one Wlan.Then I connect one computer with a static IP address and works fine.But when I connect a second one, everythiing goes down. It does not connect.I can only connect one computer to the WET200.Do I need other seetings on the WLC to allow pass traffic through the WET200?
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Jul 20, 2008
how to password recovery Wireless LAN Controller 4402
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Mar 11, 2012
I am running 5508 wireless controllers. I pass along another agency's WLAN across my wireless network that is anchored to their older 4402 controller.
I wish to run the new 3600 series APs and am planning on migrating to NCS and the new 7.2 code.
I know that the older 4400 series controllers will not handle the newer 7.1 or 7.2 code. However, i still wish to maintain this anchor relatiosnhip with the older 4402 controller. I need to know if this will work or not.
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Apr 11, 2012
1) AP was originally running a standalone image. I booted it into a so-called ROMMON or AP mode (ESC is the right key to make it boot into this mode).
I found a recovery image in its flash - c1140-rcvk9w8-mx. I made the AP boot from it by using "set" command and I see that it start booting using this recovery image. Here goes the question. Do all AP settings matter ? E.g. when I run "set" command from AP I see the following:
ap: set
?=
DEFAULT_ROUTER=10.0.0.1
Default_router=10.9.99.1
ENABLE_BREAK=yes
[Code].....
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Oct 6, 2012
I'd like to replace my 4402 Wireless controller with a new 5508. I have migrated the exact configuration from my 4404 controller to the 5508 and they are both running the same version of code. I'm worried that if I replace the 4402 with the 5508 controller, the Access Points will not rejoin to the new controller or they will join but will have lost their configuration e.g. AP Name/location etc etc. AP models registered to the existing controller are 1131, 1142 and 3502. I am also using Cisco WCS.
As long as the new controller has the exact same configuration, is it possible to replace the 4404 with the 5508? Will the existing Access Points join the new controller? Is there any other configuration required? I have read about doing this using mobility groups however would rather not if possible.
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Oct 16, 2012
I have a wireless printer on an internal wireless network. I have a laptop connected wirelessly on the same internal network. When both devices are connected to the same network I cannot connect to the printer. If I change my laptop over to the guest wireless or to a wired lan, I can see the printer. I vendor stated that within the 4402 wireless controller there is a setting to allow wifi to wifi connections on the same internal network. I am trying to figure out what that setting is called and where I might look for the setting within the wireless controller.
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Jan 27, 2013
I have a 4402-12-k9 controller and I need to upgrade to 25 APs Can I buy a 12 or 25 license upgrade to this controller?
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Oct 30, 2012
My client has on cisco 4402 controller running with 48 AP on this. Client requires to add another 25 AP but licence on the current controller is not supported client bought another controller 5508 with 25 AP.
I have been tasked to installe 5508 with conjestion of 4402. I have make the software version on both of them as below
AIR-CT5500-K9-7-0-235-3.aes
AIR-WLC4400-K9-7-0-235-3.aes
To match the same IOS version on both the controller. I have following challenges with me.
- 5508 will registered 25 AP while .. 4408 will continue with 48 AP.
- 5508 is going to be in DC and it will be directly connected to firewall as default gateway for guest SSID. 4402 is going to be on another building.
- How can I make sure that Users connected to AP registered with 4402 will have the same deafult gateway as 5508. Thre is no layer 2 connectivity between this two controllers.
- There is no romaing going to happen between this two controller as both are two different locations and user will leave one location will disconnect and it joines bak when it reach to another controller.
- Is there any way to configure 5508 as master and 4402 as slave kind of connections?
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Oct 8, 2012
Is it possible to set an Aironet 1232AG-A-K9 as a repeater while still using a 4402 controller? I have some wireless security cameras in our parking lots that I need to extend wireless to and I have a handful of 1232 points that I am not using. I have some omni antennas and a yagi directional that I was planning on using.Everything I am reading talks about configuring the AP while in automous mode, not while running the lightweight image.
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Apr 18, 2013
I have 10 Access-Point model 1131 AG are new AP.
When I connect the access-Point to the network, the AP associate only one time but i go to wireless for see the AP, i can see downloading of IOS, but the ios is 3.0.59, the ap don not nothing. I can not change any parameters.
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Jul 20, 2010
I have several controllers, including a 4402 running 6.0.188.0 software and I need to modify the Radius servers that it uses. Currently I have three servers listed;
1 - 10.246.194.16
2 - 10.200.31.78
3 - 10.247.50.56
I would like to delete server 1 which is being retired and replace it with a new server 1. I suspect, once i get servwe 1 deleted, the server 1 option would become available when I create a new server. I went into the controller and disabled server one, but every time I try and delete it, I get the "Server in use either on a specific WLAN or Mesh Radius Server Configuration" error. I can't find anywhere this server is still in service and being used, either by a WLAN or a Mesh. I've tried several different variances to modify this. What I hope to avoid is the need to reset the controller. I have a total of seven controllers that I need to make this modification to, and It will be ugly if I have to reboot these units. Hospital mission critical stuff.
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Mar 1, 2012
I am in the midst of trying to update the controller firmware of a cisco wireless lan contoller 4402, and having some issues getting the file to transfer to the controller. i am currently running verison 5.0.148 on the controller and attempting to upgrade to the latest version of 7.0.230 and for whatever reason it continues to not transfer. I have tried all 3 methods of cli, gui and using wcs software. all the no avail , I have tried tftp32 and 3cdaemon with the same results.
The error that i am getting from 3cdaemon is got socket timeout aborting code 10054, failing at 66MB transfered. I increased the timeouts both on the wlc and the tftp client to no avail
the error i get on the wlc is Code file transfer failed - Error while writing output file
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Mar 15, 2013
I have 3 WLC 4402 controller connected to an ACS Server and Cisco 1252G AP. Previously the wireless networks works fine but for two weeks now most of the clients experiencing reauthentication frequently, Some experience it every 5 mins even if they are browsing or idle and not moving. I've check the session time out settings in the wlc and it was configured for 30 mins as default. I have around 900 student clients connecting every day.
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Aug 3, 2011
we use wlc 4402 (Software Version 7.0.98.0) and want to allow only several wlan nic vendors to connect to a wlan ssid.According to this, is it possible to configure MAC Filtering with wildcards, e.g. aa:bb:cc:* ?
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Jun 5, 2012
We have Cisco 4402 Wireless Lan Controller with Software Version 3.2.171.6 and we want to upgrade it to latest version.
What is the latest version to upgrade the WLC?
Also since WLC is running on very lower version is it possible to upgrade to the latest version directly or we have to move it step by step to upgrade this to latest version?
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Jan 17, 2012
We have upgraded to latest IOS but observed this box is hitting a bug which was resolved in the earlier releases but not seen in 4402.
Is this related to hardware issue or a software bug only.
CSCtg94715
CSCtk83586
CSCso90721
Error! Software watchdog on task dot11b expired! Reaper Reset: Task "dot11b" missed software watchdogError! Software watchdog on task apfMsConnTask_0 expired! Reaper Reset: Task "apfMsConnTask_0" missed software watchdogError! Software watchdog on task apfReceiveTask expired! Reaper Reset: Task "apfReceiveTask" missed software watchdogError! Software watchdog on task radiusTransportThread expired! Reaper Reset: Task "radiusTransportThread" missed software watchdogError! Software watchdog on task ccxL2RoamTask expired! Reaper Reset: Task "ccxL2RoamTask" missed software watchdogError! Software watchdog on task dot1xMsgTask expired! Reaper Reset: Task "dot1xMsgTask" missed software watchdogError! Software watchdog on task spamReceiveTask expired! Reaper Reset: Task "spamReceiveTask" missed software watchdogError! Software watchdog on task dtlArpTask expired! Reaper Reset: Task "dtlArpTask" missed software watchdogReaper is kickin' into high gear Task dtlArpTask is consuming 0% CPU! (0% user, 0% system) Frame 0: 0x10004708: sighup_handler+84
************************************************************
* Start Cisco Crash Handler Serv *
************************************************************
Sys Name: HJ_Wireless_Controller
Model: AIR-WLC4402-50-K9
[code].....
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Nov 6, 2012
We currently have all of our foreign AP controllers on software version 7.0.116. This consists of a mixture of 4400 and 5508 WLC's. Our guest anchor is a 4402 on version 7.0.116. We are replacing the guest anchor with a 5508. We are also upgrading our 5508 wireless controllers to version 7.2 to support the 3600 series AP's. My question is what is the recommeded code that the anchor controller should be on? Should it also be upgraded to 7.2? If we upgrade the anchor controller to version 7.2, will this affect anchoring to 4400 series foreign controllers still on7.0.116?
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Feb 26, 2013
We are currently looking to upgrade (re-design) our wireless network at our college. Any experience going from a local, controller-based wireless network to a cloud-based controller? If so, what have you found the pros and cons to be?
If you thought about going to a “cloud solution”, what stopped you?
We are currently running wireless at our 3 primary campus locations, and looking to add it to our 3 satellite locations. We use 4402 WLCs at our primary locations with a mix of 1140 and 1240 APs.
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Aug 26, 2012
I have this guest wlan working with web authentication, as you may know in order to get authenticated you must have an IP address first then have a valid username and password. The problem is that if you don't have valid credentials you keep the IP address anyways.I'd like to know if there is a way to release the IPs that are not being used? The WLC is the DHCP server for this network.
-WLC4402
-6.0.202.0
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Feb 6, 2013
i am using wlc 4402 with a mgt ip 172.26.150.x/24 and ap manager ip 172.26.150.x/24, my all ap get the ip address from dhcp . currently in dhcp server 172.26.150.3 to 254 dhcp scope is configured. at mysite some devices are configured like ipad,iphone or galaxy tab with mac binding in dhcp server. now this pool is almost full. i have a policy configured for these devices for mac binding is done in DHCP. to increase pool what are the changes i need to do in wlc. what are the changes i need to do in dhcp server . is policy made for mac binding in dhcp server will get affected by this ?
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May 8, 2012
I have cisco 4402 Wireless LAN Controller with Cisco Access Point (AIR-LAP1252G-E-K9), everything is running smoothly.How come i use my Access Points without Wireless LAN Controller, is there any possibility then which AP model would be suitable?
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Aug 22, 2011
The two controllers are having two internal DHCP servers with the same range in LAN (enx1,enx2). but i have specified which is primary DHCP server(enx3) in WLAN interface.
Now if a new user added into network, will he get IP address from primary dhcp(WLC) or AP connected WLC.
if two users connected to 2 diff AP's which are connected to 2 WLC will get the same IP address? since having same address pool configured.
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Jul 4, 2011
I am currently running a Cisco 4402 Lan controller, I have a Wlan that is running unsecured and i wanted to add a simple web policy log in, so i set up an NPS server on a local DC. I have the two talking . when i go to login at the web login page I get the Error Login Error. When i look at the NPS logs it says: "Network Policy Server granted full access to a user because the host met the defined health policy" . So it has to be in my Cisco set up somewhere seems pretty simple
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