Cisco Wireless :: WLC5508 - Client Cannot Get IP From Ex DHCP
Feb 4, 2013
I have a WLC5508 , we are using external DHCP for WLANs
one WLAN is able to get IP from DHCP server but another WLAN not , the DHCP server is same , only 2 different scopes.
This is debug
*DHCP Socket Task: Feb 05 21:26:43.106: e8:06:88:9b:a8:04 DHCP received op BOOTREQUEST (1) (len 308,vlan 1, port 1, encap 0xec03)
*DHCP Socket Task: Feb 05 21:26:43.106: e8:06:88:9b:a8:04 DHCP processing DHCP
[Code].....
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Feb 6, 2013
I'm using WLC5508 /w 7.0..My client do not get its IP. Status shown "DHCP_REQD".I found in (Cisco Live) Troubleshooting Wireless LANs with Centralized Controllers This related with Enable/Disable DHCP Proxy checkbox. I solved. with Enabling this.But,
1) Why this box have been working correctly for longtime? No one did diable/enable this feature on my box.
2) I guest, ver7.0 Disables this chechbox by default. Or not? I also have others two 7.2 boxes. Those are all Enabled.
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May 7, 2012
I have some problem about dhcp via VMware 7.1. My client connect the wifi and get ip address well, then, i turn on VMware (inside my computer) and set as the bridge mode. I found that my VM cannot get the ip-address from dhcp server and I using WLC5508 version 7.2. I try to connect via Switch, my VM get the ip address well.
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Apr 17, 2013
Is it possible to setup DHCP on the WLC5508? If i have 2 or 3 VLAN with different Scope and IP range, how can i do?
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May 13, 2012
In an enviroment with WCS and a WLC5508 with 40 AP's (WAPs are either 1262's and 1252's), I have noticed that the bulk of users are infact operating on 802.11g although most operating notebooks are running 802.11n capable NICs (including my own laptops NIC - but yet when I connect I connect at 54Mbps.). Only a small portion of registered clients are using 802.11n. All my WAPs have both radios enabled?My question is how does a client notebook select a "prefered" band of 802.11n. I know in some cases the wireless NICs themselves have an option to select the "Prefered Band", but there are many notebooks out there that dont have this option. What would make a client connect at 802.11n over 802.11g? Who makes that call ?
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Apr 28, 2012
i have WLC5508 and many 1142 AP . client have authenticated by ACS .but sometimes client's PC has occurred this pheonomenon. and has reconnectioned.
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Dec 27, 2012
There is a problem with my WLC, it is not allowing an specific client to connect. It gives an 802.1x failure log but I am not using it, anyways the WLC puts this client in the excluded clients list and I didn't add it manually, in fact is a new laptop.
I attached a couple of screens from my WLC.
IOS is 7.0.98.0
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Apr 21, 2013
Do the problem caused by the modems itself or it just sign of faulty Ethernet switch (using 20 port Allied Telesis ethernet switch).
Sometimes I cannot connect to internet due to "unidentified network" buy i can resolve this problem by restarting my modem + switch.
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Apr 25, 2012
I have intergrated wlc module in 2800 series cisco router, switch, cisco 1130 lightweight access point, i configured dhcp on router for wireless client, deal is that AP taking ip address from router its ok, but client cannot take dhcp, what im doing wrong? here is configuration of wlc router and switch
wlc configs/
config interface address management 172.16.1.10 255.255.255.0 172.16.1.250
config interface address ap-manager 172.16.1.11 255.255.255.0 172.16.1.250
[Code].....
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May 30, 2012
My AP get IP from 6509, but client cannot get dhcp from my dhcp pool for client, what is the reason?i have 3750g switch with integrated WLC, i connect it to 6509 I did all configs yesterday here is outputs
WLC
Interface Name Port Vlan Id IP Address Type Ap Mgr Guest
-------------------------------- ---- -------- --------------- ------- ------ -----
ap-manager LAG 10 172.16.10.100 Static Yes No
globus LAG 20 172.16.20.254 Dynamic No No
management LAG 10 172.16.10.99 Static No No
service-port N/A N/A 0.0.0.0 Static No No
[code].....
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Oct 31, 2012
Currently we're providing DHCP to wireless clients from a dhcp pool on a cisco 6500. Due to new requirements we need to move to windows 2008 dhcp and when I test this on an unused WLC (7.0.235.0) the client doesn't get an address.
When I do a packet capture on the client I see it requesting dhcp but not getting any response from the server. When I do a dhcp debug on the client I see the same (see attached file).
This seems to me to be a server issue but the same server is supplying addresses to wired clients.
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Sep 11, 2011
WAP4410N / configure dhcp OR dhcp CLIENT?
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Aug 21, 2012
The wireless client can't get the DHCP address when I enable the On-MAC-Filter-failure, MAC Filtering and Web Auth. Client can get the DHCP address when I only enable the Web Auth in the same WLAN SSID. The WiSM verion is v7.0.235.0. [code]
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Aug 31, 2011
User is connecting to 5508, running 7.0.116.0. Previously worked on another AP. TV (client) is set to use dhcp. As other posts have mentioned, "DHCP Addr. Assignment" checkbox is not checked for this wlan, but I also switched it to Required for this wlan but it did not make any difference. Seems to be a problem with just this client as many other clients are on this AP with no problems.
Users have to register their MAC to get on our wireless system, but there is no encyption or security enabled once the device has been registered.
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Mar 20, 2013
I have ten E4200 routers deployed in five library branches. In recent months, the E4200's in two branches have occasionally gone into a state where they are not always providing an IP address to both wired and wireless devices. Some devices will get an IP fine and others will not, The problem seems to move and the next day the same device will connect fine and others will not. A reset of the router usually clears the problem but it is becoming more frequent and bothersome. For some reason only two locations are effected.
Some notes:
- Firmware version is 1.0.02 build 13
- When I set devices up with static IP's they work fine, so the problem seems to be related to the DHCP service
- The WAN side of the network tests fine with no issues
- I've had these routers deployed for over a year and this problem just started in the past two months
- Routers and AP's are on different channels to prevent interference
- No nearby WiFi signals appear to be casuing any interference
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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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Jun 2, 2012
I just got an EA3500 and I guess I don't understand what "Refresh" does when viewing the DHCP client table under the "Status", "Local Network" tab of the web interface, either that or it's not working. If I have active wired and wireless clients and I power off the EA3500, wait a few minutes, then power it back on, the table is blank. If I hit "Refresh" I would expect it to re-populate the table with the connected clients. For whatever reason, it doesn't. I have to physically disconnect and reconnect the E-net cable, or power cycle the wireless client to get them to reappear in the table. Is something wrong with the router or its s/w
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Aug 22, 2012
My EA4500 will periodically clear out the DHCP Client Table and I will lose internet access.This happens once almost every day, normally in the morning. If I can't access the internet I will check the DHCP client table under Status -> Local Network -> DHCP Client Table and it is always empty.After I select Setup -> Reboot it will work again - when I look at the DHCP client table it is now populated with all my devices. I am on firmware version 2.0.37.
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Aug 25, 2011
I have purchased E2500 and i am having following problems:
1. DHCP client list not showing - only shows when i reboot the router. After some time, the list never shows even when i press refresh button
2. I can only reserve IP when i reboot the router - after some time i cannot do this action also
I have upgraded to latest firmware and also peformed reset as directed by support.
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Oct 29, 2011
I just purchased an E4200 router. I have four clients on my network and they are all set up for DHCP. I renewed their IPs and they all are connected. "Cisco Connect" reports that I have four clients connected. When I access the router and bring up the DHCP Client Table, there are no entries. There should be four entries. Aftern I enable the logging function, none of the logs have any data in them even after I wait for 45 minutes and use the internet and renew IPs. I am using Firmware Version: 1.0.03. I have the same results for both Chrome and Firefox. I want to be able to set Static IPs but I am hampered by the not having any clients in the DHCP client table.
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May 20, 2012
I'd like to add a name to a few ip addresses in the DHCP client table currently there is an asterix for a couple client names. the router is an ea3500.
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Jun 5, 2012
I have DHCP enabled, but I have assigned a static IP to most of my network devices.When I click on the DHCP Client Table, most of the devices are NOT shown even though I know they are connected and working.One device (a Brother printer) that I have assigned a static IP to actually shows up as having an IP from the DHCP range. A Panasonic TV does not show up at all even though it is connected and woking. I have not been able to assign a static IP to it because it does not show up.
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Dec 3, 2012
Region : France
Model : TD-W8968
Hardware Version : V1
Firmware Version : TD-W8968_V1_120926
ISP : SFR
Device in question: siemans C610 IP voip phone
Configuration:
* The C610 is directly connected to TD W8968 via the ethernet port number 3 >> ethernet port number 1 is connected to the devolo homeplug 200AVPLUS . The PC is at the other end of the homeplug network
* The DHCP address starts at 192.168.1.100 - 192.168.1.199.
Symptom:
1. It takes a long time (about 2-3 minutes) for the C610IP to obtain the IP address of 192.168.1.100 after the synchronisation of the ADSL line is finished 2. In the DHCP client list, I could only see the IP address of the PC (192.168.1.101) but not the C610 IP. However, if I type 192.168.1.100, I could access to the configuration page of the C610 IP. - I only managed to see the C610IP once in the DHCP client list.
I tried to unplug -> replug the router but to no avail.
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Apr 28, 2013
I have a Linksys WRT310N v1 with firmware v1.0.10 build 002Jul 19, 2010 My router fails to renew it's DHCP lease from my cable provider, causing internet access to drop. I can still access my cable modem at 192.168.100.1, but I must do a "IP Address Release" then "IP Address Renew" to get back internet access. The router works fine otherwise.
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Aug 7, 2006
I recently installed a WRT54G wireless router however I has this same question about my BEFSX41 Wired router.
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Jun 9, 2012
When I enable IPv6 on my E4200, the Windows 7 DHCP client crashes. It also seems to crash the audio service, the event logger and a few other windows services.
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Dec 6, 2012
Region : UnitedStates
Model : TL-WDR4300
Hardware Version : V1
Firmware Version : 3.13.23 Build 120810 Rel.44064n
ISP : Comcast
So I've been checking my router DHCP list and I usually use the WPS feature to add devices. I know how many devices I have and which ones are wireless etc. I've made address reservations on all the devices that I have and know of. One feature that really frustrates me (which is missing) is no way to rename a device. My iPhone is named: Reggie's iPhone yet the 4300 picks it up as Unknown... I dont understand why. I've renamed it on the iPhone to different things and restarted it but still it comes up as that. I have 2 Nexus 7s and both come up with wierd names, one is for my wife and one is for me and I wish there was a way to name it proper.
Question is: Will the name edit feature ever get added to it? I dont get why it's not there now, it's not really something major (I have a 5 year old router that even has that... and it cant even support N). It's really frustrating to have to guess and check the devices on my network because most of them come up as unknowns.
Right now I'm trying to located another device that's coming up as unknown and now matter how much I try, since the router lacks any feature to assist finding it, it's really frustrating.
something else i noticed: my DHCP List shows all the devices connected with their IP addresses, yet I went into CMD and was doing a random ping command. I'm able to ping 192.168.0.114 with perfect stats back yet on my DHCP List it shows the highest IP is at 192.168.0.112.... Is something wrong here? Is it supposed to not pick up the IPs it gives out? And of course since there isnt a way to tell if that IP is for a WIFI or ethernet device, I have no idea what that device is...
yet i found another ip address on my network by using the ping command. actually I went ahead and did arp -a to find out all the ips with mac addresses. this is a serious flaw with the security of this router!!
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Jan 10, 2011
I upgraded to firmware version 1.0.03 I started to have this weird issue: I have four PCs connected to this wireless router via wireless G. They all run Windows 7 Home Premium. After a few hours I started to notice that the DHCP client table is empty even if all four PCs are connected to the internet. This causes a networking problem because one of the PC serves as a file server and it grants access by IP addresses. Not being able to "see" those computers, my access is denied.
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Apr 2, 2013
I'm trying to change the DHCP Client Lease Time from 1440 minutes to 480 minutes. When I try to apply the new settings, I'm getting a message that says "Invalid Characters" and it won't stick. I've tried this in three different up-to-date browsers (ie10, Chrome and Firefox). Also, I'm connecting locally through LAN and I have the latest EA6500 Firmware: 2.1.39.145204
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Jan 23, 2012
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About a week ago I tried to clear log files which was 270gb (syslog.log) and after that restarted the server. And all inventory devices suddenly disappear! I could find it from search menu but cant access - cisco works said that there is no such a device in Device Repository or I havent enough right to view it (but i logged as admin). And after this i failed to add any device in Inventory. So I reinstall Cisco Works and get that DCR error..
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Apr 25, 2013
I have a Cisco ASA 5505 I've configured as a DHCP server. I'm getting DHCP on workstations attached to the appliance, but I'm getting the following message when the appliance loads:DHCP Client: can't enable DHCP Client when DHCP Server/Relay is running on the interface DHCP: Interface 'inside' is currently configured as SERVER and cannot be changed to a CLIENT by a CLIENT featureI'm not trying to configure this thing as a client, so I'm not sure why the system is producing this message.
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Oct 19, 2012
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May 13, 2012
We recently upgraded our 5505s to 8.2(5) 26 and noticed that each will crash after a cerntain amount of time. Some crash every 30 minutes other will crash every 4 to 8 hrs. The only difference would be the user's home ISP and/or home router, if they have one. They are configured with a dynamic dhcp IP address for the outside interface and the crash files starts with the following:When we downgrade back to 8.2(5) 13 the problem goes away. Any known bugs for this version? I haven't been able to find anything yet. We do have one 5505 that does not have this issues. The only thing that may be different is that it was never at 8.2(5) 13. We had downgrade it from a 8.3 version.
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