Cisco Wireless :: 5508 - Clients Not Getting IP Address
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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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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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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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 22, 2013
I have a strange behavior between a WLC 5508 (version 7.0.116.0) and NEXUS7010.
WLC
The WLC is configured in DHCP Bridging Mode (it sends DHCP requests without change)
Nexus
The VLAN interface is configured as follows
interface Vlan501
ip access-group acl-int-vlan501-in-1 in
no ip redirects
ip address 10.12.56.4/21
ip ospf network broadcast
ip router ospf 100 area 10.23.0.0
hsrp 51
Clients can not obtain an IP address intermittently. If I deactivates the ACL when the problem appears(when the client can not obtain an IP@) the probleme is resolved
Note: Before the WLC was connected to Catalyst 6500 and worked properly for 2 years (with same configuration)
I saw this note about differences between DHCP relay on the NEXUS7000/NXOS an Ip helper one the 6500/IOS URL. Do you think the problem may come from the DHCP relay or ACL on the NEXUS.
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Jan 22, 2012
I'm having a problem with my clients dropping the network connection constantly throughout the campus. I am using a Cisco 5508 controller and the APs are LAP1141N. At first I thought it was a roaming issue but I tested with only 1 AP and the problem persisted, I can tell you that we don't have interference problems and that our old linksys APs used to work without flaws.
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May 1, 2013
I have a 5508 WLC with CAP3502i APs connected to it. I upgreaded the code to the newest 7.2.115.1 code. I am having trouble with laptops that are not physically moving but are moving their connection from AP to AP in the same area. This is in a school and causing a problem with a testing program they are using becuse they drop 2 or 3 pings in the process. I do have the area heavily saturated with AP but that is because of the amount of clients we have connecting to them. There is 8 classrooms in a hallway with 24 laptops in each classroom. Each classroom has an 3502i ap in it. The laptop can be connected to an AP with great signal and move to another AP that still has a good signal but not as great. I don't understand why if I get 4 bars and connected at 144mps it would move to a new AP. These are Lenovo laptos and i have updated their wireless card drivers and set the roaming agressiviness to low but it still happens.
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Nov 8, 2012
I have a WLC 5508 with half a dozen LAPs (AIR-CAP3502I-E-K9).They have been working but sometimes clients detect conectivity problems with the wlan.Here is the message log I can obtain from the controller:
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Jan 22, 2013
I have a WLC 5508 in my datacenter, and 1142s configured with FlexConnect at a remote site.Two issues:Some APs 'die' from time to time where I cannot ping them anymore and they do not service any clients. I can reset them from the WLC after which they work again. I have some clients in the building (same area) who lose connectivity from time to time and are unable to reconnect to the wireless. I am seeing errors that the gateway cannot be found or there is not a valid IP. restarting the AP closest to the clients fixes the issue. I have replaced the AP and connected to a different port on the switch.
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Apr 14, 2013
We have deployed a WLC 5508 w/ SW version 6.0.199.4, 1142 AP's & open authentication w/ MAC filtering. Clients are randomly getting dropped with "Limited Access" shown in Win 7. In this state, the client machine is unable to ping the gateway and sometimes lose their DHCP assigned IP as well. A manual disconnect/re-connect to the SSID is required everytime.I ran a debug on one the clients stuck in the "Limited Access" state (debug client xx:xx:xx:xx):
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 Adding mobile on LWAPP AP 3c:ce:73:c5:1e:b0(0)
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 Scheduling deletion of Mobile Station: (callerId: 23) in 5 seconds
*Apr 15 16:59:23.205: e0:91:53:60:1f:e4 apfProcessProbeReq (apf_80211.c:4722) Changing state for mobile e0:91:53:60:1f:e4 on AP 3c:ce:73:c5:1e:b0 from Idle to Probe
[code]....
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Aug 6, 2012
question in regards to the deployment of a new WLC and new LAPs,I have configured and connected a 5508 WLC and 3500 series LAP.LAG is enabled in the WLC and successfully connected to the neighboring switch (using etherchannel) and to the network.
The port-channel port is set to trunk mode obviously and certain vlan ids are currently allowed (3-5)
The management interface has this IP address 192.168.5.250/24
I created a WLAN with WLAN ID 3, Interface set to Management and say SSID test1
I have connected a new LAP to the network, which switchport interface is set to access mode and assigned with vlan id 3. The LAP is able to join the WLC successfully with an IP address, such as, 192.168.3.100 (assigned via DHCP).
When I try connecting a mobile client to the wireless LAN, it can successfully detect and connect to the WLAN, created in the WLC (test1) however it gets an IP address by DHCP, in the 192.168.5.0/24 network, which is the IP range of the management interface's IP address.
What can I do to get the clients connecting on network 192.168.3.0/24? I thought this would be the case since I allocated the WLAN Id of 3 in the WLAN test1 configuration and since the LAP switchport is set to access mode with vlan ID 3.
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Apr 16, 2013
We have a Cisco 5508 controller with 1142 LWAP's running version 7.4.100.We have several Dell laptops which will not associate to the access point UNLESS you stand directly underneath it, power off the wireless, turn it back on then eventually the PC will associate to the AP.Once the PC is associated to the AP and user is authenticated then all is well.
Have tried updating the wireless drivers downloaded from both Dell or INTEL. This does not happen to all of our laptops. However, without making any changes to the WLC or the PC's, we have begun to expirence this problem with laptop which previously did not have this issue.
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Mar 18, 2013
For WLC 5508 software version 7.0.235.0, which command is needed to get the WLC send syslog messages everytime a wireless client associate and desassociate?
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Aug 26, 2012
I'm working on migrating autonomous WAPs to lightweight mode in a WLC 5508. Some of the older WAPs are being decommissioned at the same time.
One issue I have found is that after replacing an old WAP in autonomous mode with a new WAP (3502); some clients near the coverage of this new LWAPP are now connecting to another WAP in autonomous mode that has not been converted or replaced yet; but that is located quite far away from where these clients are, actually two floors down. Users on these clients have reported wifi dropouts, which is obvious due to the distance where the old WAP is. A workaround that seems to work is removing the wifi profiles in the client machines and recreating them again, which is not a good solution for all of the wifi profiles we have in place. At this point of time we still need to have the older WAPs until they are all replaced.
How can I get clients connecting to a LWAPP that is closer to their location? I'm wondering what causes those clients to look for an existing older WAP rather than connecting to the new LWAPP, which is broadcasting the same SSID closer to where they aree. Bear in mind that the new LWAPP is working fine and has live sessions working just fine.
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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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Jul 10, 2011
which is the maximum number of simultaneous wired guest clients on a 5508? And in a 2112 controller?
Wired clients count as wireless clients??
What about anchoring limitations, what is the effect of wired guest clients on the anchor controller?
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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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Nov 9, 2012
I set up the IPv6 on EA2700 (running firmware v1.1.39), and all the wired clients can get an IPv6 address, assigned by the router, without issue.However, all the wireless clients seem to unable to get an IPv6 address. If I connect a laptop to the router both wirelessly and with an ethernet cable, then the ethernet NIC gets an IPv6 IP but not the wireless NIC.
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Jun 22, 2011
We have 2 WLCs, 4402 (main) and 5508 (backup). While we turn on both devices, 4402 have 10 APs, and 5508 have 10 APs as well. Total connected clients will be 120+, but when we turn off either 1 wlc, let's say only 4402 is power on, total 20 APs joined, but the total client will be 90+, never reach over 100 clients. The same happened on 5508, is there any maximum associated connection on WLC?
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Nov 17, 2011
Need implementation of an OID to view the number of connected clients per Access-Point? I am using a 5508 WLC.
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Feb 14, 2011
I have a network setup as live-ssid. It is using the Interface for VLAN 14. All APs under the default-group AP Group obviously allows clients to DHCP an address from VLAN 14. This is working fine.
I created a new AP Group called 3rd Floor. This has the live-ssid setup, but instead of using the Interface for VLAN 14 it is setup for the Interface for VLAN 50. I have all the APs on this floor moved to the 3rd Floor AP Group.
The problem is that 95% of the clients on 3rd Floor are still picking up DHCP addresses from VLAN 14. I checked and all the clients are connected to the APs on the 3rd Floor. Only 4 Clients are getting an address from VLAN 50.
I'm not sure if something is configured wrong or not since some devices pick up the new VLAN and the rest don't. I've manually reboot the APs on the 3rd floor to see if that would fix it.
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Feb 21, 2012
I work on a college campus that has thousands of students a day accessing our wireless network. We have broadcast SSID that the students use to connect to the internet. The students usually have more than one WiFi enable device on them and their laptops and phones both take an IP address, but they are only using the laptop to authenticate while the phone is associted, but not authenticated. In the meantime, I have several thousand IPs being used by their phones/iPods etc. Is there a way to revoke the DHCP lease if the client does not authenticate within a specified time frame (i.e. 10 minutes)?
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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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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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Mar 26, 2013
We are deploying BYOD with Cisco ISE 1.1.2 and WLC (5508) using 802.1x authentication.Windows clients cannot connect to 802.1x SSID with the following error on ISE:Authentication failed : 12321 PEAP failed SSL/TLS handshake because the client rejected the ISE local-certificate
The client doesn't have preconfigured wifi profile or root certificate installed.The concept of BYOD suppose that you can connect your device without any installed certificates and preconfigured wifi-profiles.
The problem is that Windows 7 supplicant does not send TLS alert in pop up window, when connecting to 802.1x SSID.If this alert is seen, than you can accept it and proceed the connection. After that you will be asked to install ROOT-cert, get your own cert and etc.So, the question is: how to make the windows supplicant to show the pop-up window with TLS alert?
p.s. the attached file shows the example of pop up TLS-alert window
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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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Apr 21, 2011
We are deploying softphones for remote employees in our company. We currently are using Cisco 2921's with VPN enabled.
All of the clients who connect with the Cisco VPN x86 client are getting 00:00:00:00:00:00 for their MAC Addresses, and all of the Cisco VPN x64 bit clients are all getting the same MAC Address, although it is different than the x86 clients.
This is causing the softphones to not work, as they all need to be sending independant MAC addresses.
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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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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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