Cisco Wireless :: Clients Authenticating To 1231G Not Getting Assigned DHCP Addresses
Jun 24, 2007
Here at HQ we have a 4402 WLC. At our remote sites we have 1231G APs running in autonomous mode. I upgraded one of the APs -- IOS 12.4(3g)JA -- to run LWAPP. Per release notes I've read upgraded 1231's do not support REAP/HREAP mode, consequently, it's running in LOCAL mode.
The AP is managed by the WLC. I created a WLAN for the remote site and assigned it to the MGMT interface; the remote site subnet doesn't exist in HQ. The DHCP server for the remote site is presently at that site; AP and DHCP server reside at the same place.
Clients authenticate successfully to the remote site AP, however, they are not getting DHCP addresses assigned. Does the DHCP server for the remote site have to reside in HQ since the AP is running in local mode? If so, where is that specified, on the MGMT interface config?
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May 27, 2012
My company AP 1231G is not passing the DHCP address to the client from the DHCP server, my config listed below basicly the AP is on its own VLAN 10.1.123.1 and the DHCP server is 10.1.10.2 -- trying to use iphelper to pass DHCP to clients and the AP is on static IP 10.1.123.2--
!
! Last configuration change at 13:15:56 +0800 Fri May 25 2012 by root
! NVRAM config last updated at 13:15:56 +0800 Fri May 25 2012 by root
!
[Code].....
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Sep 9, 2012
Environment:
1. Core switch - Catalyst 6509e
vlans configured:
a. vlan 50 (wired clients)
[Code]....
here's the problem, wireless clients connected to WLAN guest keep getting DHCP leases from WLAN local 10.0.50.10 (scope 10.0.70.101 to 200)
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Apr 10, 2012
I recently upgraded a clients WLC and they keep saying they are unable to get an IP address from the DHCP server. It's a simple, flat network and here is what the logs are showing.
*apfReceiveTask: Apr 11 13:37:25.477: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:37:17.278: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:37:05.880: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
*apfReceiveTask: Apr 11 13:13:47.397: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'management'. Marking interface dirty.
[code]....
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May 6, 2011
I have a PIX 515E that I want to use to as a border between my internet connection and my Cisco AIR1131AG. I have configured the PIX to have the outside interface as a dhcp client which gets its dynamic IP address from the cable modem. the AP is connected to the E1 inside interface. Now I could see the E1 interface from the arp table from the AP but I cannot ping it. From the firewall I don't see the ARP table from the firewall. and i cannot ping the AP. what is wrong with the configuration? side note, i am able to connect to the AIR1131AG from my laptop I was not able to retrieve an IP address.
FW1 - CONFIGURATION
interface Ethernet0 description uplink towards the techsavvy modem speed 100 nameif outside security-level 0 ip address dhcp setroute !interface Ethernet1 description >>> WIFI LAN ACCESS <<< nameif inside security-level 100 ip address 10.0.0.1 255.255.255.0
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May 27, 2013
i have 2 1260 Access points one is in root mode , one is wgb mode. Authentication is EAPFAST. There are 5 devices connected via WGB bridge to the rest of the network.
- If clients are sending some data , then WGB AP announces this client mac via IAPP to root AP and rest of the network sees them correctly
- If clients are "passive" , then after WBG AP announces them to root AP , they timeout after 6 minutes on root AP and obviously they are not pingable from the rest of the network. The only way to restore connectivity is to ping that device from WGB AP, then WGB AP announces via IAPP to root AP , then and only then they become visible from the rest of the network.
My question is related to this 6 minute timeout on root AP . Is it normal behaviour ?
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Sep 6, 2011
I bought 3 of the Aironet 1231g access points and cannot get any clients to connect to them. I have tried everything from an Iphone, Droid2, Win 7 and XP laptops with built in wireless G cards. All say that they cannot connect to the wireless network. I have two setup currently, one on Vlan 1 that I have configured the way I want with WPA2 enterprise. The other one is just one I setup while playing around.
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Apr 17, 2012
So if I do a static ip address it works fine, but if I turn off static, the machine authenticates fine, but is not assigned to the access vlan, and it does not get an ip address.now when I use static I notice in the ISE live authentication logs, 11213 No response received from Network Access Device, for the switch even though its configured correctly.
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Apr 2, 2013
A customer has RADIUS running on a Win Server 2008 R2 machine, has Autonomous 1140 APs and a mix of Windows 7 and XP Pro clients. Using PEAP as the authentication method the Win 7 clients can access the WLAN, but the Win XP clients cannot. The Win XP clients are at least SP2. I am doing some research before going to site on Friday and wanted to poll the community. I found an older post speaking to a MS Hotfix under KB#885453, but it referes to "third-party RADIUS servers," not MS servers URL.
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Jul 1, 2012
We have 12 - AP-1231G access points in our warehouse with 2 SSID's, both on different VLAN's. We would like to set one of the VLAN/SSID 's to use DHCP from a windows DHCP server.Is this possible to do with option 43 or is that only for lightweight AP's ? Sho ver: Cisco IOS Software, C1200 Software (C1200-K9W7-M), Version 12.3(8).
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Jan 6, 2011
I have a Cisco ASA 5510 with a 5 block of IP addresses assigned from our ISP. I am having issues with connectivity and routing traffic from the outside interface to the outside interface. I have my outside interface set up with IP address of 24.182.x.146, it allows internet access and also hosts a web server. Any time I have a client using this device for internet access, I am unable to have traffic accepted for my web server. I.E 100.100.x.52 is using this device, it browses to https://24.182.x.146 and it gets an unable to connect. I am able to connect to the web server from any other ISP/Device. [code]
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Oct 22, 2012
I have a RV110W which is am using as a router (not gateway), because it is connected to the DSL modem (not planning to bridge it) through its WAN port. The DSL modem forwards all PPTP traffic to the RV110W.The only pupose of the RV110W for me is to use it as a VPN router.
Info:
Firmware version: 1.1.0.9
Below are the settings I have:
WAN:
LAN:N.B. The modem runs a DHCP server, so I am relaying the requets to it
VPN:N.B. Also tried with 192.168.0.0 and 12.168.2.0 networks; same thing.
Routing Settings:
Routing Table:NB: 192.168.1.11 and 10 are VPN clients (created automatically).
Firewall:Users are being able to successfully connect to the VPN; however, there are couple of problems:
1. They are not assigned a gateway; hence, not internet connectivty (i want them to use the remote gateway)
2. They are not able to access the 192.168.0.0 network; hence unable to reach their DNS server and other hosts (run a tracert; they couldn't go beyond the RV110W VPN server IP). For this, i tried to turnoff the firewall on the RV110W, and also tried to create and Access Rule to allow all outboud and inbound traffic between LAN and WAN, but no success.
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Apr 28, 2011
I will set up a Dhcp server on the inside interface of my pix. I would like to have the DHCP Server authenticate to the Active Directory Server that is located on the DMZ.
Inside --pix--dmz
Inside interface
Win 2008 DHCP
DMZ interface
Active Directory Server
What would be the issues that I could run in to when I try to authenticate this server from the inside interface to the dmz? I see that Dhcprelay option is available on the PIX 6.3 I'm guessing this is the only command that I need to use: dhcprelay enable dmz
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Jan 4, 2012
I just bought a Linksys E4200v2 router and updated the firmware to 2.0.26.124551. The DHCP server is turned on however, it won't issue any IP addresses. I have to set IP reservations for all of my devices in order for the router to give them an IP address. This includes my printer, xbox360 and 2 computers. I'm also having this problem with the wired and wireless lan.
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Feb 7, 2013
We have an ASA configured to access the internet, which works fine for clients who have an IP address assigned by DHCP, but not for clients with manually assigned IPs.
For instance, with the DHCP server configured to give IP addresses between 172.16.101.1 and 172.16.101.10, a device may get the IP address 172.16.101.1. This machine will have connectivity to the internet.
If we then configure DHCPd server range as 172.16.101.2 to 172.16.101.10 and statically assign the 172.16.101.1 IP to the client, it will not have internet access. It will, however have inside access and VPN access.
If I try to ping 8.8.8.8, the following is logged:
ASA 3 Feb 08 2013 15:51:01 8.8.8.8 xxx.xxx.xxx.100 Deny inbound icmp src outside:8.8.8.8 dst servers:xxx.xxx.xxx.100 (type 0, code 0)
Where 'servers' is the name of the inside interface the request is made from and 'xxx.xxx.xxx.100' is the external IP. It seems as DNAT is not working when the client IP is static assigned.
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Dec 27, 2011
I've been using this setting for clients in small offices and what not, and since all they wanted was to give another nutch of security to their network, we've been intalling cisco routers 2600 series still outhere for their internet connections and we had no issues what so ever, not until we run into cable isp provider, and their dhcp wont be able to assign our interface a dynamic IP, this is the setting aplied to the router interface;
interface fastethernet0/0
ip address dhcp
ip nat outside
no ip redirects
no ip unreachables
no ip proxy-arp
Why it wont be seen or assigned an ip by their dhcp, I talked to their isp and they assigned a static ip (private one) and we still have the same issue, if i connect a pix 506e interface with the ip add dhcp assigned to it gets a dynamic ip right away...
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Feb 18, 2011
I've got an issue with one of the businesses I work with. Just yesterday a PC had this problem, and this morning one more followed suit. These PC's were given a 192.168.35.x IP address when configured to take whatever the router gives them, however our Sonicwall TZ190 is configured to hand out a 192.168.20.x IP address over DHCP. There were no secondary IP configurations on the client workstation, no virii, nothing out of the ordinary. When I set a static IP on the client it works fine, but when I put it back to automatic it will once again give itself a 192.168.35.x IP (and subsequently have a gateway of .35.1, somehow). I've checked the router, there's nothing on the LAN side of the network interfaces besides 192.168.20.x.
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Jul 6, 2012
My ip address of my WRVS4400N changes every so often. when i use the ip assigned to connect remotely, it works until the ip is re-assigned through dhcp. I know there is a way around this bu ysing a name or something. I just don't know how to set that up.
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Nov 15, 2010
I'm configuring a Cisco 877 router as my firewall.My WAN IP will be assigned dynamically with DHCP. I will also get my default route from DHCP.I will need to configure ip inspection and packet filtering.I will need to configure NAT, I will eventually need to also configure a dial-up VPN.
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Jul 8, 2012
I am trying to setup VLANs and most of configurations are working ok now except IP address assignment from DHCP. If any computer in VLAN 120 or 130 configured with manual IP address, then all works fine. It can reach internal servers and the internet without problem.If the IP address is assigned automatically then any computer in VLAN 120 or 130 are obtaining IP address (strangely!) from VLAN 100. Because switch ports that connected to the computer belongs to VLAN 120 or 130, the computer cannot reach internal servers and the internet with ip address from VLAN 100 . All SVI interfaces for VLAN 100, 120 and 130 have ip helper-address option defined pointing to the DHCP server. No DHCP snooping enabled on all switches at this point. DHCP server have three scopes for the three different VLANs.
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May 13, 2012
Initially there were 3 SSIDs configured but all of them were assigned a single interface and this interface was configured with the controller management IP address as DHCP server so that the WLC could assign IP addresses to wireless clients, guns and printers etc.
Issue: As part of PCI initiative, we decided to segment the traffic in multiple subnets based on type of wireless clients; so now there are 3 interfaces configured and each SSID is assigned a specific dynamic interface and each interface is configured to use the controller management IP address as DHCP server.
There are 3 scopes configured for each of the dynamic interfaces/SSIDs and DHCP proxy is enabled but wirelss clients are still being allocated IP addresses from the original DHCP scope that was associated with the dynamic interface originally assigned to all 3 SSIDs.
I verified the following:
1. Each SSID is assigned a different dynamic interface (Users, Voice and Handhelds)
2. Each dynamic interface is configured to use controllers management IP address as DHCP server
3. DHCP scopes configured with correct network information for each dynamic interface and enabled
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Feb 12, 2013
I have a LAP1142N that is connected to a 3560 nonPoE switch (using compatible power injector) that will not associate to the controller I have set-up. The wireless is existing and I have about 11 other APs connected to the controller with no issues. The AP will pull an IP address from DHCP running on the primary controller. The AP pulls a new IP address in roughly a minute. I set the pool to be 3 IP addresses and set a contant ping to each, there is about 1 request time out before the next IP address starts pinging. I went to the controller and pulled the following message error from the log.
*Feb 13 14:24:58.614: %LWAPP-3-HDR_ENCAP_ERR: spam_lrad.c:4216 Unable to encapsulate LWAPP header for discovery response; AP (APs MAC address)
*Feb 13 14:24:58.614: %APF-3-PDU_ENCAP_FAILED: apf_net.c:771 Failed to encapsulate a PDU for transmission to station00:00:00:00:00:00. Destination IP address not set in L3 mode.
I have tried a different cable, connecting to a PoE switch, different controller, larger DHCP range, hosting DHCP on the distribution switch, I am awaiting console access to the AP since this is remote work. The controller is running Software Version 5.1.151.0. Thoughts?
console inventory output from GUI
Model No. AIR-WLC4402-25-K9
Burned-in MAC Address XXXXXXXXXX
Maximum number of APs supported 25
Gig Ethernet/Fiber Card Absent
[Code] ....
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May 1, 2013
Have a WLC 5508 running 7.0.230 with internal DHCP server. Timeout is 3600 seconds. The IP addresses never seem to be released. The controller will show 70 clients but 254 addresses will be assigned.
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Mar 8, 2009
I'm monkeying around with an 881-W. Clients can associate and authenticate to ssid 'test', but they cannot get a DHCP address. Clients plugged into f 0 - 3 get DHCP addresses just fine.
I've looked at a lot of different guides, ran debugs etc. When wifi clients make DHCP requests the server never gets them. So there must be some IRB thing going on.
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Jan 20, 2010
The 1130ag was the LAP model but I upgraded it to run in autonomous mode. My understanding is that it cannot assign IP addresses but I just want that confirmed. It is not connected to a WLC nor a server that can do DHCP.
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Sep 28, 2010
I currently have DCHP server set up on my new 1141N. Everything works great, but I wanted to know if it were possible to make the DHCP server only hand out ip addresses on the wireless connection? Currently the AP is giving out ip addresses from the pool to wired and wireless pc's.
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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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Mar 29, 2012
I have new 2504 WLC + 1041LAP. I configured the first DHCP scope on WLC and the first WLAN. Then I set WLC DHCP server in WLAN properties and tried to connect to WLAN with wireless clients.
My wireless clients are able to authenticate on WLAN, but not able to get IPs from DHCP. The only lease that DHCP shows is for 1041LAP.
If I set permanent IPs on my wireless clients, they can connect and ping WLC.
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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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Sep 28, 2012
I have my other XBOXs connected to a 24 port switch but the one connected to the ea6500 directly gives me this moderate NAT issue. I thought this new router would be an upgrade to my old dlink but so far I get a new problem every day.I have reserved dhcp addresses for all the boxes and set up port triggering for the ports listed in several guides. But what else do I need to do? Is it likely I got a bad router?
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Jan 27, 2009
I know this question was asked many times, but I'm still not able to finalize my configuration on 871w. LAN part works fine, but wireless clients do not get DHCP IP. here is the config:
Building configuration...
Current configuration : 2092 bytes
!
version 12.4
no service pad
service timestamps debug date time m sec
service timestamps log date time m sec
no service password-encryption
!
[ code ].....
I'd like to have LAN and WLAN clients in same 192.168.1.0 sub net.
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Dec 9, 2012
Region : Poland
Model : TL-WDR4300
Hardware Version : V1
Firmware Version : 3.13.23 Build 120810 Rel.44064n
ISP : [url]...
I'm having issues with DHCP server not dealing IP after few hours (varies between 1h and 8h) of torrent traffic. If no continuous torrent traffic is applied, the problem does not occur. New wireless devices connect to the wi-fi network, but get stuck on 'getting IP adress'. The problem is with DHCP service or the wireless network service. New wired devices receive IP. The problem is only with wireless devices. I have no additional wireless device, that I can configure the network settings on my own (only phones) to check if it works without DHCP server giving IP. Wired connection is stable, but the bandwidth usage curve becomes somewhat similar to a sinewave.
I did disable the hardware NAT because that feature made the router unstable and caused it to hang up within minutes.
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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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