Cisco Wireless :: 5508 - AP Unable To Get IP Address After WLC Is Rebooted
Aug 20, 2012
I had configured a Cisco 5508 series WLC. The APs used are Cisco 3502 LAP. The APs are configured to use DHCP for this ip addresses.
We had configured the DHCP server on the 2 Windows AD server previously and the APs were not able to get an IP address when the WLC was rebooted. To isolate the cause, we configured the DHCP server on a cisco 6500 switch. When we reboot the WLC, most of the APs are not able to grab an IP address. We had to remove and reconfigure the DHCP pool on the cisco 6500 for the APs to capture the IP addresses.
My colleague had feedback that they gotten a message that the DHCP pool had been used up. We tried to do a "show ip DHCP pool" but the switch did not recognise the command. IOS version used is Version 12.2(50r)SYS2.
We had a problem with the wireless client getting ip addresses from the windows DHCP server previously but problem was resolved after we disabled the DHCP proxy on the WLC.
What we are curious is why was the DHCP pool fully used on the Cisco switch and how could we check the number of addresses used other than running "show ip dhcp binding" and doing a count of the IP addresses?
Also why did we have to disable the DHCP proxy on the cisco WLC for the wireless clients to be able to get an IP address from the windows DHCP server?
We seem to be facing a number of problems with the DHCP functions for the wireless setup.
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Jun 28, 2011
I have 350 WAP (1142n) running of two WLC 5508 (IOS version 7). WLCs are not located on the same subnets/locations and are not configured as mobility groups. The vlan ids on both wlcs are not identical.
[Code].....
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Feb 23, 2012
In our test set up, we have two WLC 5508 Controllers connected via Checkpoint UTM-1 firewall Inside and DMZ Interfaces. Both the WLC controllers are connected to the firewall via Cisco 3750 switch. On the Local (Inside) Controller, guest SSID is enabled and attached to the wireless management Interface. On the remote anchor controller, guest SSID is enabled and attached to the Management Interface as well. The following configs are replicated on both the Controllers.
SSID Name - guest
Interface - Management ( VLAN 10 on Local and VLAN 20 on remote) -
Mobility Group: Same configs at both ends
SSID Anchor : Anchor SSID on local and local SSID on Anchor.
AP: CAPWAP 3502 Management Subnet
[code]....
Is there any thing missing in the wireless configs and or the firewall rules as i could not see DHCP request back from the Anchor Controller. Also, after DHCP is obtained, the web authentication request will be redirected to an Amigopod device for authentication. In this case is the redirect URL congiguration to be performed only on the Anchor Controller or is this to be replicated on both the Local and Anchor Controllers.
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Nov 23, 2011
I have configured 5508 with multiple APs but clients on the internal SSID aren't getting an IP address. I have the IP helper address configured and I have also disabled DHCP proxy on the controller.
I get the following from the client debug, I don't know what the below mac address is, it's not one my APs or the clients, I am not seeing this mac address on the controller at all but it shows up in the debug.
type = Airespace AP - Learn IP address
on AP 6c:9c:ed:87:23:c0
*Dot1x_NW_MsgTask_0: Nov 25 16:14:17.579: 08:11:96:20:94:28 Entering Backend
[Code].....
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Dec 1, 2012
I am using 2 anchor controllers 5508 as DHCP server. Anchor controller A is primary and anchor controller B is secondary. From time to time, client will complain "duplicate IP address error" when they try to connect guest wireless.First question: both anchor controller should have a recorder of IP address which is assigned to each PC, right?Second question: is there any way this type of issue can be avoided?
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Jun 23, 2011
we have coonection between c3750 and wlc 5508 and it shows that mac address flaps between two interfaces of c3750. [code] two ports are trunking and one port is for management purposes and the other port is for the all other vlans. But it shows that it flaps always. And i think WLC uses one mac address for all device and not for port specific and that causes problem.
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May 16, 2012
We got a question about our WLC 5508 single controller deployment with 14 access points without a VLAN configuration.
When our clients connect to the wifi, we cannot see any ip address of them in the client details page. It shows everytime the ip address 0.0.0.0. The clients are configured with a static ip.
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May 26, 2013
My 5508 WLC which runs version 7.4 is configured as a DHCP server for the AP management and here's my problem: My AP can get to the address, and can ping the address of the WLC management，But my AP prompts the following log： [code]
In the switch dhcp we can use to do the WLC option43 specified address, but in this case how the address specified WLC, the AP can be registered up?
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Jun 2, 2013
We have a 5508 with 7.4.100.0 vor Internal APs and OEAPs. till now every thing is ok. Now we have to connect an AP (local) in a remote office, connected to the WLC by a VPN Tunnel. The problem is that the AP in the remote office uses the NAT Address to connect to the WLC, so the traffic goes over the Internet, not trough the VPN Tunnel. On the controller I have the following setting:
AP Discovery - NAT IP Only ................. Disabled
On the AP:
AP Link Latency.................................. Disabled
How to force the AP to use the internal IP Address of the WLC?
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Sep 29, 2012
I have a wireless 5508 with license base to 50 aps, i use a deployment flex connect. I already registered all my access points, I use web authentication to authenticate users guest, and the service dhcp is in the central site.
My issue is the users in each remote site, can not get an ip address by dhcp from the central site, they can authenticate in the guest ssid, but any users can not get an ip. The request is passing by the wan in this way
Central Site DHCP - Router WAN - Remote Site - Users with notebooks. I use flex connect central deployment (all the traffic consulting to the wlc) .
perhaps i should use local deploy? The wireless is in the central site.
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Sep 3, 2011
With the E1000 tthe wireless devices they seem to work just fine, I can access the internet just fine.
For my desktop PC in oder to use the router to get on the internet or to even use the Cisco Connect to check the router, the E1000 needs to be rebooted. I am unable to access the router otherwise. I have tried 3 different LAN cards all with the same results.
The latest firmware notes do not look like upgrading the firmware will work. My Router info from Cisco connect
Model name: Linksys E1000
Model number: E1000
Serial number: CVN21L422937
Firmware version: 2.1.01 build 5
Operating system: Windows 7 SP 1
Software version: 1.3.11006.1
Connection type (WAN): unknown
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Nov 30, 2011
I recently add a second CT5508 to the network, but when I tried to add the first 5508 to the mobilty group I received a message like this:
"error in creating member"
I've tried different mobility names, via GUI, via CLI and always the same error.
I've verified twice or more than twice connectivity issues or any error on the entering the MAC and IP of the controllers, everything is fine.
I'm using version 7.0.116.0
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Apr 26, 2012
I have a 5508 WLC connected to 2950 Switch and the LAP 1262 connected to the same default VLAN. My AP's are able to join the controller since they are in the same broadcast domain but They are NOT able to download the image from WLC. When I am looking at the wireless TAB of WLC.. it says... Downloading Image.
what all needs to be done to make UP the APs. Also, Following is the error i am seeing at the AP.
*Apr 27 11:48:40.640: %DTLS-5-SEND_ALERT: Send FATAL : Close notify Alert to 192.168.1.99:5246
*Apr 27 11:48:40.640: %CAPWAP-5-CHANGED: CAPWAP changed state to
[Code].....
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Jan 10, 2013
I have an (AIR-LAP1310G-E-K9R) and I tried to join it to WLC 5508 but I'm facing an error, I get this error from the LAP 1310 console as below:
Compiled Mon 17-Jul-06 11:45 by alnguyen
*Mar 1 00:00:05.289: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up
*Mar 1 00:00:06.289: %LINEPROTO-5-UPDOWN: Line protocol on Interface
[Code].....
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Apr 5, 2013
I have a 5508 wireless controller running version 6.0.199.4 (the image installed when the device was shipped) and I am trying to install by tftp version 7.3.112.0
The issue is when using tftpd32 gets to 82% transfered then fails with the error "% Error: Code file transfer failed - Error while writing output file"
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Aug 20, 2012
I have a 5508 at a remote site and a 5508 at my main campus. I was doing some work on the remote site's controller, so I changed option 43 on our DNS/DHCP system, then applied an LWAPP template from NCS to the AP's to migrate them to the controller at my main campus (so users could still utilize the wireless at the remote site). They all moved over to the temporary (main campus) controller without an issue.
When I was ready to migrate the AP's back to their local (remote site) controller - I changed option 43 for each sub net that contained AP's @ the remote site to point back to their local controller's management IP address, pushed an LWAPP template again (pointing it to the local controller obviously) and apply template/reboot AP.
The AP reboots, disassociates from the main campus (temporary) controller, but when it comes back up a few minutes later - it associates BACK to the main campus controller it was on instead of to the remote site/local controller like option 43, the LWAAP template (and my frustrated screams) are now telling it to. I'm certain I'm just missing something.
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Apr 3, 2013
I have a 5508 controller, just upgraded from 6.0.182 to 7.0.98.0. Also LAG was switched off directly after upgrade.
Since the upgrade none of the 1142 LAPs are associating with the controller. I can see they are being issued IPs by the internal DHCP but putting a console cable and watching I am getting:
Not in Bound state.
*May 4 11:41:17.759: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*May 4 11:41:17.759: %CAPWAP-5-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
One Ap prior to the upgrade was on a static IP and that connected through without any problem, (it was an 1131 though, but I dont think that is the issue...)
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Jan 15, 2013
Just inserted a new 5508 WLC into the network. We current have 3 4404 WLCs, and there was a need to duplicate, as much as possible, the configurations on the 4404s, and the design. The 5508 came online as expected. We moved a few access points over to it. The APs got the correct address range. The clients are expected to get addresses in the same scope range as the APs. However, the clients are receiving addresses in the management IP scope.I know there are two "not a good way to do it" in here. Why is the management address range in the DHCP scope, and why are the clients using the same scope as the APs. We are going to change that. For now, the AP and client in the same range has been going on since we rolled out wireless in 2006.The 8 ports on the 5508 are configured for LAG. There is no dedicated port for management. They tell me not to do that on a 5508.
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Feb 29, 2012
I have a situation where a user needs more than one office extend AP in his home. My office extend controller is a 5508 running 7.0.220.0. Are there any issues NATing multiple OE APs to a single address? My initial lab results indicate that each of the AP's associate with the controller and establish a DTLS tunnel. I see the SSIDs get pushed to the AP and then it seems to restart the process never being fully operational. Is there a workaround that will allow me to run mutliple OE APs?
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Dec 4, 2012
I setup a guest wired network on the WLC 5508 with 7.2.110. A postage machine can only be setup for static IP address over guest wired network. Is any one how to get it configure on the WLC 5508?
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Jul 2, 2011
my wireless internet does not work after I rebooted my laptop.I tried installing wireless internet but it failed.What do i do?
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Dec 25, 2012
There are three RT-N56U routers in my family. I have one as does my dad and uncle. Bought all 3 about a year ago. They've been rock solid since.
However, my dad has been complaining of network issues, mainly lag and slow response. During Christmas yesterday, I took some time to troubleshoot it which ended in disaster. He was on an older firmware so I had updated it. After the update, the wireless would drop every 5-10 minutes after the router rebooted. I tried rolling back the firmware and there is still the same issue.I reboot the router, wireless comes up and within 10 minutes, the wireless is down.
Most of the clients on the network are iDevices. There are two iPod Touches, 4 iPad Mini's and iPad, two iPhones and an Apple TV, all wireless. Other than that, there is a PS3 and a bunch of wired clients. Looking in the routers logs, it appears that at least one device keeps requesting a DHCP request even though it has an address. Then at some point, the router spits out this error in the log: [code]
That error just keeps counting up, starting at 1 -- Based on google info it's related to wireless drops due to ASUS firmware issue with certain wireless cards. My guess is one of the new devices has a card that they don't support, causing this issue. I was stating to think, since he has so many iDevices on his network, an Airport Extreme?
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Nov 27, 2012
Guestconnect SSID configured on 5508 WLC with Pass through athentication (NAC guest server). No issue with Laptops and Iphone/Ipad ver 4and 5. Only Iphone Ver 6 users unable to access Guest connect .
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Aug 19, 2012
I'm having some difficulties configuring my Cisco WLC (5508) - ver 7.0.230.0 .I'm have multiple client device residing on same vlan associated to the WLC but unable to telnet over port 8090. However, when inter-vlan, client device able to telnet over port 8090.Say Machine A as application hosted machine and Machine B as client machine; [code] i should be looking on the WLC to allow telnet port 8090 over from Machine A to B within the vlan .
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Sep 4, 2011
We have two SSID's Guest and Corp. We are using 5508 controllers.
The problem is that if an iPad user is connected to Guest SSID and then try to connect to Corp then it fails saying "Unable to connect to Corp". After 10-15 retires the same iPad connects successfully. The problem doesn't happen on windows PC. I have attached debug for one of the clients.
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Jun 26, 2012
Background: Wireless credit card machines can't stay connected to the 5508 controller 7.0.116 / 1142 ap wireless system. MAC address of one of the wireless hosts is 00:12:0e:ec:ce:97. AP servicing them is d4:a0:2a:99:34:60. Hosts are able to connect to the network after a reboot and stay connected for random periods of time but then don't come back unless you manually reload them. I have 3 in total in the same room services by the same ap.
I have the output of debug client 00:12:0e:ec:ce:97. Output showed 802.1x 'timeoutEvt' Timer expired for station 00:12:0e:ec:ce:97 so I increased the value to 4000ms on the controller but am still having the issue.
Note that the output below is the state the client stays in after receiving the timeout (802.1x 'timeoutEvt') showing subsequent attampts. The only way to get them back on is a reload of the credit card machine.
[Code]........
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Mar 29, 2012
I have 2 units Cisco WLC 5508 running software version 7.0.220 with 70 over units Cisco AP 1262N and 1242AG. Some of wireless clients having problem to get the correct IP address from the DHCP server. There are 2 units of Microsoft DHCP. Both DHCP server ip have been configured on the Interface at the WLC. The core switch also being configured with ip helper. I've attached the debug output of one of the wireless client during the problem.
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Apr 17, 2012
I have a new wireless configuration on a 5508 WLC. the controller is licensed for 12 AP's. I have plugged 8 AP's into the wireless vlan and 6 out of 8 come up with IP address and connect to the controller, broadcast two configured SSID's all seems good with them, but i have two AP's that do not get IP addresses. they are in the correct vlan i can plug a laptop into the group of ports in the val and get an IP address. So it seems to be just the AP's that don't. if i look at the consol of the AP it says: Waiting for PHY to auto negotiate . then it say timed out and continues to "boot with errors" then it continues to complain that it has no ip address. I have rebooted a few times and changed ports, and patch cables.
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May 25, 2013
I have 5508 controller in my lab. I am working on a project to set up a public internet but with some condition.
- User should able to connect to the SSID without any authentication.
- Once user will connec to the SSID it should redirect to an external URL which indicates terms and condition and email address field.
- User should enter his/her email address in email addrss filed and click I accept button.
- Once that is done then he/she is allowed to access internet.
We are not sure how can we achive this as I do not know what should be the return value for WLC to allow that user to go through or what should be the settings on the WLC to redirect to the page.
I have seen a settings on web authentication for external URL but I guess it is only for username passwor or Radius authentication. While in this case I do not want to use any authentication just an accept buttor or Decline button and all good to go.
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Nov 26, 2012
I have problems with an AP AIR-CAP1552C-E-K9 (MAC: 2c:36:f8:73:e8:a0 )this AP cannot join to WLC 5508 software version 7.2.110.0.The AP ever gets associated to WLC.
I saw timeout messages and this error message:
%CAPWAP-3-ECHO_ERR: capwap_ac_sm.c:5656 Did not receive heartbeat reply; AP: 2c:36:f8:73:e8:a0
I don´t see any connectivity issues between the AP and WLC thorugh HFC network.One time the AP join to WLC and I saw this messages in debug CAPWAP:
*spamApTask1: Nov 27 09:01:06.316: 2c:36:f8:73:e8:a0 Change State Event Response sent to 10.64.128.165:16012
*spamApTask1: Nov 27 09:01:06.316: 2c:36:f8:73:e8:a0 CAPWAP State: Run
*spamApTask1: Nov 27 09:01:06.316: 2c:36:f8:73:e8:a0 Sending the remaining config to AP 10.64.128.165:16012
[code].....
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Jun 12, 2012
I have a 5508 WLC and 40+ LAP1142N APs spread across 19 locations that allows staff to connect to our private network via wireless. I recently deployed about 40 new laptops all identical make and model HP ProBook 4530's and all have the same client setup for the wireless. Out of those 40 laptops I have 4 that will not connect to the private network. However, these same laptops will connect to my public, open wireless network without issue. In addition to the 4 that will not connect all the others will prompt twice for network authentication.Now, I have about 10 other laptops that are not the HP model and all connect without issue and without dual propt. I don't think this is a wireless network issue but could be some type of issue with this model of laptop.
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Nov 6, 2012
output are here
*Mar 1 01:28:21.018: %CAPWAP-5-CHANGED: CAPWAP changed state to DISCOVERY
*Mar 1 01:28:21.022: %LWAPP-3-CLIENTERRORLOG: bsnSetCurrentBHRate : fail to set
radio control and data rate
*Mar 1 01:28:21.179: %CDP_PD-2-POWER_LOW: All radios disabled - AC_ADAPTOR (00
00.0000.0000)
*Mar 1 01:28:21.984: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEth
ernet0, changed state to up
*Mar 1 01:28:34.341: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigne
d DHCP address 192.168.10.244, mask 255.255.255.0, hostname AP2c54.2d0d.c3c4
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May 1, 2012
I have a WLC 5508, AIR-LAP1142N APs and a SSID for students to connect to who bring their own device. I am still testing this and it has not been rolled out but I am running into some serious issues with joining the network. I am authenticating them through a RADIUS server (2008 R2). Problem: many of them cannot connect because they are lacking the certificate.
1. What is a good setup for authentication in a BYOD environment
2. If my setup is good what can I do to allow kids to use their computers on the wireless either without the certificate (which I know is unlikely) or what do I need to have them do to connect. I am hoping it does not involve hard wiring and getting the certificate from the server.
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