WLC 2006 DHCP locking up

We have a WLC 2006 that is setup to distribute IPs to wireless clients using the internal DHCP server. Occasionally, wireless clients can connect to the APs (four 1131AGs) but do not get IP addresses assigned.
Rebooting the WLC temporarily fixes the problem.
software version is 4.0.155.0
anyone experiencing this or know of a solution?
thanks!

Apparently, others have observed similar DHCP behavior.
You may want to read a related thread ("Wireless Clients eventually not issued DHCP through WLC4404") in the "General" conversation section.
LINK:
http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddc63fc

Similar Messages

WLC 2006 INTERNAL DHCP FOR GUESTS CLIENTS

I would like to use the internal DHCP to issue ipaddress to the guest wireless clients.
However; when i setup the wlc internal DCHP scope and try to connect to the wireless guest vlan the WLC debug DHCP reads ...forwarding to 192.168.255.2 which i have listed as the gateway to the pix
any examples on how to do this would be great.
here is what i have for the dhcp scope:
Dhcp Scope Info
Scope: Guest.Data.DHCP
Enabled.......................................... Yes
Lease Time....................................... 86400 (1 day )
Pool Start....................................... 192.168.255.17
Pool End......................................... 192.168.255.30
Network.......................................... 192.168.255.0
Netmask.......................................... 255.255.255.0
Default Routers.................................. 192.168.255.2 0.0.0.0 0.0.0.0
DNS Domain.......................................
DNS.............................................. 0.0.0.0 0.0.0.0 0.0.0.0
Netbios Name Servers............................. 0.0.0.0 0.0.0.0 0.0.0.0
Here is what i have for the wlan
WLAN Identifier.................................. 2
Network Name (SSID).............................. Guest.Data
Status........................................... Disabled
MAC Filtering.................................... Disabled
Broadcast SSID................................... Enabled
AAA Policy Override.............................. Disabled
Number of Active Clients......................... 0
Exclusionlist Timeout............................ 60 seconds
Session Timeout.................................. Infinity
Interface........................................ guest.data
WLAN ACL......................................... unconfigured
DHCP Server...................................... Default
DHCP Address Assignment Required................. Enabled
Quality of Service............................... Silver (best effort)
WMM.............................................. Disabled
CCX - AironetIe Support.......................... Enabled
CCX - Gratuitous ProbeResponse (GPR)............. Disabled
Dot11-Phone Mode (7920).......................... Disabled
Wired Protocol................................... None
IPv6 Support..................................... Disabled
--More-- or (q)uit
Radio Policy..................................... All
Security
802.11 Authentication:........................ Open System
Static WEP Keys............................... Disabled
802.1X........................................ Disabled
Wi-Fi Protected Access (WPA/WPA2)............. Disabled
CKIP ......................................... Disabled
IP Security Passthru.......................... Disabled
Web Based Authentication...................... Disabled
Web-Passthrough............................... Disabled
Auto Anchor................................... Disabled
H-REAP Local Switching........................ Disabled
Management Frame Protection................... E

when i try to assocate the dhcp scope to wireless.guest.data interface using 192.168.255.1 which is the ip of the that interface it will not let me. I would have thought since i was using the interal dhcp that the .1 address would be the dhcp scope address also. i can assign 192.168.255.0 or 192.168.255.2(gateway)if i use .0 or .2 the dhcp request (discovery) process starts and then will forward to .2 (gateway) and never assign an address. the only thing that happens is that the client wireless interface will get 255.255.255.255 for a few seconds then go away.
what i am trying to accomplish is to connect the wlc port 2 directly to a pix 506 which goes to the internet so the guest traffice is not on our vlan.
any other suggestions on guest vlans would be appricated....
Tom
Interface Name................................... wireless.guest.data
IP Address....................................... 192.168.255.1
IP Netmask....................................... 255.255.255.0
IP Gateway....................................... 192.168.255.2
VLAN............................................. 150
Quarantine-vlan.................................. no
Physical Port.................................... 2
Primary DHCP Server.............................. Unconfigured
Secondary DHCP Server............................ Unconfigured
DHCP Option 82................................... Disabled
ACL.............................................. Unconfigured
AP Manager....................................... No
Scope: wireless.guest.data.dhcp.server
Enabled.......................................... Yes
Lease Time....................................... 86400 (1 day )
Pool Start....................................... 192.168.255.17
Pool End......................................... 192.168.255.30
Network.......................................... 192.168.255.0
Netmask.......................................... 255.255.255.0
Default Routers.................................. 192.168.255.2 0.0.0.0 0.0.0.0
DNS Domain.......................................
DNS.............................................. 0.0.0.0 0.0.0.0 0.0.0.0
Netbios Name Servers............................. 0.0.0.0 0.0.0.0 0.0.0.0

Issues upgrading WLC-2006

I cannot seem to get past the "transfer download start" (CLI) or "download" (GUI) phase of the upgrade on a WLC-2006 -- from 3.2.171.5 to 4.2.209.0. The transfer consistently times out at about 76% complete and I receive an error message, either "error writing to flash" or "error writing output file" (or something similar). Any suggestions/recommendations would be greatly appreciated.

You can't upgrade from 3.X to 4.2.209 direct. You need to upgrade to 4.0.206.0 first before going anyware. It's specified in the Release Notes.
http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn422090.html#wp233853

Wlc 2006 mac filtering

I would like to allow client to access wireless lan based on the client mac-address.
How I config it on WLC 2006 locally (not using radius server)? If yes, How mnay mac-address can be configured on the wlc2006?
Thanks.
Douglas

Hi Douglas,
Just wanted to add a note to Ankurs good info;
Maximum MAC Filter Entries
The controller database can contain up to 2048 MAC filter entries for local netusers. The default value is 512. To support up to 2048 entries, you must enter this command in the controller CLI:
config database size MAC_filter_entry
where MAC_filter_entry is a value from 512 to 2048.
From this good doc;
http://www.cisco.com/en/US/products/ps6366/prod_release_note09186a0080813b1c.html#wp42756
MAC Filtering
http://www.cisco.com/en/US/products/ps6366/products_user_guide_chapter09186a00805a6ad0.html#wp1040588
Hope this helps!
Rob

WLC 2006 LWAPP issue?

Hi, I am setting up a WLC2006 with 2 AP1010's. I cannot get the controller to see either AP. When I place the AP's on a network with a WLC 4400, they are recogized immediately by the 4400 at Layer-2 LWAPP.
Since the WLC2006 only works at Layer-3 LWAPP, do I have an AP icompatibility issue with the AP1010's(since I can only get them to work at Layer-2 LWAPP)?
Any advice is greatly appreciated.
Chris

According to Cisco doc., L2 mode is supported by WLC 44xx & 41xx and not supported by WLC 2006. And the 1010 supports L2 mode only, so the 1010 cannot works w/ 2006. You have to upgrade the AP to 1200, 1130 or 1240 or the WLC to 4xxx. And, don't know is there any future IOS / firmware can support it. Hopes this help.

WLC Dropping DHCP Discover Packets

Hello
I have following setup:
[Notebook]----wired connection----[Cisco Lynksys wlan ethernet bridge] )))))) wirelessConnection ((((( [AP]-----[switch]-----[Router]-----[WLC]
I use a seperat DHCP Server. so on the WLC the DHCP Proxy is disabled.
what i know is - the WLC should receive and forrward he DHCP Discover to the layer3 interface on the router, where the ip-Helper is configured. From there it should go to the DHCP Server.
BUT - here comes the problem -
The WLC Dropps the DHCP Discover.
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP received op BOOTREQUEST (1) (len 308,vlan 253, port 13, encap 0xec03)
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option: hostname = Test (len 4)
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option: vendor class id = MSFT 5.0 (len 8)
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP option: 55 (len 13) - skipping
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP options end, len 72, actual 64
*DHCP Socket Task: May 05 16:06:26.153: 88:ae:1d:b7:b7:c2 DHCP dropping packet (no mscb) found - (giaddr 0.0.0.0, pktInfo->srcPort 68, op: 'BOOTREQUEST')
Can anyone tell me why this happens?

HI Chris,
First enable DHCP Proxy on WLC.
(Cisco Controller) >config dhcp proxy enable
and make sure that For DHCP proxy to work, a primary DHCP server must be configured on each controller interface that requires DHCP services.
To kow more about DHCO on WLC:
http://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/110865-dhcp-wlc.html#Internal-DHCP
Regards
Dont forget to rate helpful posts

Querry on Cisco WLC 2006

Hi ,
Need one help from you.Please let me know Cisco WLC 2006 ( Running version 4.2.207) will support Access Point 1242AG ?
Thanks in advance.
Thanks & Regds,
Lalit

Hi Sabastian,
Thanks for your reply.My question was I have a Wireless Lan Controller 2006 with 1030 Access Points registered to that and i wants to add AP1242AG.The Current version running on WLC 2006 is 4.2.207.I wants to add 1242AG Access Point to the 2006 WLC.Will my current WLC with current running version of image will support AP1242AG ?
Please reply.
Thanks & Regds,
Lalit

HT201210 i upgraded my iphone4 to ios 6.0.1 but my phone reset it self and its in recovery mode & every time i try to restore my phone its saying error 2001 or 2006 & my lock button is broken so i cant put my phone in dfu mode what im i suppose to do help

i upgraded my iphone4 to ios 6.0.1 but my phone reset it self and its in recovery mode & every time i try to restore my phone its saying error 2001 or 2006 & my lock button is broken so i cant put my phone in dfu mode what im i suppose to do help me pleas

Hi, to get your iPhone 4 back to normal, here're two ways for you.
1. Use Dr.Fone for iOS. The free trial version can fix iPhone screen of death. The free trial version can do that, you don't have to pay.
Just download and install this software on your computer and connect your iPhone 4 to computer with a USB cable. When it detects your iPhone 4 is abnormal, click Restart the device to get your iPhone 4 to be normal.
2. Use iTunes to fix it.
Step 1. Make sure that the latest iTunes is installed on your computer.
Step 2. Plug into a USB cable to connect your iPhone4 to computer.
Step 3. Press and hold the Home button and the Sleep/Wake button at the same time for about 10s.
Step 4. 10 seconds later, release the sleep/wake button. But continue to hold the home button until a message comes out, saying "iTunes has discovered an iPhone 4 in recovery mode, you must restore this iPhone before it can be used with iTunes".
Step 5. Click your iPhone 4 in the left sidebar to show the device control panel on the right. Then, click Summary.
Step 6. Go to Backups section and click Restore Backup.... In the drop-down list, choose a backup file and restore to your iPhone 4

WLC 2006 EEPROM

I'm a teatcher in the Technical High-School of Geneva.
We have a project in the laboratory with a CISCO AIR-WLC2006-K9 V1. Due a bug (CISCO Field Notice: FN-62555; http://www.cisco.com/en/US/ts/fn/620/fn62555.html) Bug in CISCO IOS, the EEPROM (contain MAC address, serial Number, …) was erased and now the device can't boot.
It's a never used equipment and CISCO won't repair this (don't support this, End of Live ?)
Does someone could copy the EEPROM of its controller and send me the file ?
Many thanks in advance !

It's true, I must find an EEPROM but on the side of the Cisco product is no longer supported ! But we do not have money to buy a new WLC for Student's laboratory
Do you still have a wlc 2006 ?
if yes, would it be possible to have a copy of the contents of the EEPROM ?

WLC 2006 & LAP1231 communication

HI,
I Have problems with AP authentication on the WLC. AP gets the IP from the DHCP but fails to load the image.
On the WLC log I get:
Sun Sep 3 21:49:51 2006 [ERROR] spam_lrad.c 2544: Security processing of Image Data failed from AP 00:17:59:67:76:80
Sun Sep 3 21:49:51 2006 [ERROR] spam_crypto.c 653: Failed decryption of message from AP 00:17:59:67:76:80
On the AP I get:
*Sep 3 21:54:27.750: %SYS-5-RELOAD: Reload requested by LWAPP CLIENT. Reload Reason: COULD NOT DOWNLOAD NEW IMAGE SUCCESSFULLY.
*Sep 3 21:54:29.750: LWAPP_CLIENT_ERROR: not receive read response(0)
Any ideas ?
Thanks,
Vasil

Thanks,
I thought of that. I just purchased all the equipment without the service plan, big mistake !
I don't have CCO (yet) so I can not access the new image files for the WLC2006. I am running 3.2.7.8.0 and the latest one is 4.0.179.8
Any alternative sources for the image files or I would have to wait for my order to be processed? I have a deadline of 12 hours to fix this.
Thanks,
Vasil

WLC 2006 Support LAG?

Does the 2006 WLC support LAG (i.e., logically connecting its 4 100 Mb/s ethernet ports together like EtherChannel)?
Thanks

Hi Friend,
Unfortunately this feature is not available on 2006 controller.
Only 4404, 4402 supports lag.
HTH
Ankur
*Pls rate all helpfull post

WLC as DHCP server problems

Hi
      My 5508 WLC which runs version 7.4.100.60 is configured as a DHCP server for the AP management and here's my problem:
Client can not get the address,I am in location at 1F of AP, obtain an IP address and associated to this AP, but I got to address is the address section 2F instead of 1F address above. In this WLC the AP, power and channel have not been optimized, the adjacent channels are AP 1, the power display is 1.
Last night I test, disconnect reconnect several times, I was able to get to the same network to a different IP address.My AP is 1602I. LoaderVersion 15.2<2> JAX . This is why ?

Cisco Controller) >show interface summ
Number of Interfaces.......................... 17
Interface Name                         Port     Vlan Id     IP Address      Type    Ap Mgr       Guest
management                            LAG       421      10.217.147.45   Static       Yes           No
redundancy-management          LAG       421           0.0.0.0         Static        No            No
redundancy-port                           -    untagged        0.0.0.0         Static        No            No
service-port                               N/A       N/A      10.215.29.165   Static         No           No
t2-2f                                        LAG       608       10.215.69.125   Dynamic    No            No
t2-1f                                        LAG       609       10.215.68.253   Dynamic    No            No

5500 Series WLC internal DHCP Server - Exclusion?

Hi there,
We're using the internal DHCP server on our 5500 Series WLC which works fine.
However on one WLAN we ran out of addresses so changed the subnet from a /25 to a /24.
The problem is that the router/gateway is still in the middle (124/125/126) and not easily changed.
I've moved the WLC interface to the top of the subnet (251) but the router is more difficult as its externally managed/controlled.
So is there a way we can create a DHCP pool of .1 through 250 on a /24 mask but exclude 124/125/126?
Thanks
Mike
PS - Router subnet masks were changed so can see whole subnet.

Mike,
The WLC isn't a fully functional DHCP server, it only allows you to define what is in scope, not what is out of scope. Now if you have a cisco router/switch, you could use that for the DHCP server and specifically exclude the necessary addresses.
HTH,
Steve

WLC an DHCP

Hi,
I am wondering if the folowing is a valid configuration:
WLC: 5508
software: 7.3.101
I have a subnet (VLAN130) for management interface and I have 2 SSID/VLAN, 1 for corporate devices (VLAN160) and 1 for guest(VLAN20).
Corp devices gets IP from an Windows DHCP. It is working as well.
Smartphones/guest is geting IP from the WLC. It is working as well too. But I need to change it.
I am deploying a WLC 5508-HA and when the feature HA is enable, the WLC does not support the DHCP server feature anymore.
Is there a way for the user from guest vlan to get an IP Address, doing the request for my windows server on corporate vlan through the management interface?
Regards,
Murilo

Steve
In the past, it didn´t work. My customer had a Proventia Firewall, and when we tried, it didn´t work. He said me that the firewall was receiving the requests through "guest interface", then we let the DHCP on the WLC.
When we tried to do it, we were using the software version 7.0.98. I have faced and I am still facing so many bugs on Wireless Lan Controller , maybe this was another one.
Right now, the firewall is a ASA 5525 and the WLC software version is 7.3.101. We tried to move the DHCP to new ASA firewall, but we found a limitation too. The ASA supports a maximum of 256 DHCP address.
I received a Service request to solve this big issue, because on HA deployment was found this limitation on WLC.
If I move on with the deploy, then it should work fine, doesn´t it? The DHCP messages requests and answers goes through the management interface, are you sure about this?
thanks and best regards,
Murilo

2500 WLC Primary DHCP Server

Hello,
If I set a primary DHCP server in the interface configuration, or if I override DHCP in the WLAN Configuration.
Which interface does the WLC use to try and connect to the DHCP on behalf of the wireless clients?
IF
A) The dhcp server is not on any of the configured subnets.
B) The DHCP server is on a different interface's subnet.
Sent from Cisco Technical Support iPad App

Hello Stuart,
As per your query i can propose the following solution-
The interface will be Management interface
IF
A) The dhcp server is not on any of the configured subnets.
B) The DHCP server is on a different interface's subnet.
For more information you can go through the link-
http://www.cisco.com/en/US/products/ps6366/products_tech_note09186a0080af5d13.shtml
Hope this will work.

WLC 2006 DHCP locking up

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