Cisco Wireless :: AIR-WLC2106-K9 - Decrypt Errors Occurred For Client
Jun 13, 2010
I am getting error messages for clients:
11 Mon Jun 14 09:11:56 2010 Decrypt errors occurred for client 00:13:ce:54:57:3c using WPA key on 802.11b/g interface of AP 00:16:9c:91:97:c0 12 Mon Jun 14 09:11:56 2010 Decrypt errors occurred for client 00:16:6f:91:d8:60 using WPA2 key on 802.11b/g interface of AP 00:16:9c:91:97:c0
These are only occuring for clients that are disconnecting....
They can reconnect after a WLC reboot....
We have swapped APs.....
I have seen this error in other forums but it says not to worry about it. There has to be a connection between this and clients getting disconnected. We have anywhere between 10-50 clients on the system at any one time.Is this a client issue (nic firmware, version) or is this an error in the controller??
AIR-WLC2106-K9
IOS ver: 6.0.196.0
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Dec 10, 2008
we see a strange message in our WLC logs, which occurs quite often (>10 times a day):Decrypt errors occurred for client [MAC-Adress] using WPA key on 802.11b/g interface of AP [MAC-Adress]The MAC-Adresses of the affected clients are varying as well as the APs reporting the error.The clients are Notebooks, Cisco IP-Phones and Nokia-DualBand-Phones.
Even more frequently we see the following message in the log:
%ETHOIP-3-PING_TRANSMIT_FAILED: ethoip_ping.c:227 send_eoip_ping: Failed to tx Ethernet over IP ping rc=5.
We use TKIP as Encryption and EAP-Fast as well as LEAP as Authentication (Cisco ACS).The WLC is an 2106, the APs are 1242AG. We don't recognize any problems placing calls or talking over these phones. It's just these messages in the log that concern me.
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Feb 23, 2011
I am seeing a lot of the following showing up in the WLC trap log:
Decrypt errors occurred for client <CLIENT-MAC> using WPA2 key on 802.11b/g interface of AP 00:17:0f:81:ad:90
we are using WLC runninn 7.0.98 and ACS 4.0
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Aug 16, 2012
I am having trouble with a newly configured install. Basically it seems that my centrally switched guest SSID is not functioning. As you change AP groups, which should change the interface associated with the SSID and also the dhcp client address, the client is retaining the original dhcp address from whichever AP group they first associated with.
I also have a locally switch WPA2 SSID at each location which is working fine. Clients are able to change dhcp address correctly as they move between AP groups. It just doesn't seem to be working on the guest network, which is odd because it was working earlier in the install. It has only started having issues yesterday afternoon.
The interface above is assigned to the guest SSID in one of the AP group. I assume this has something to do with it but I've been over my DHCP assignments on the core switch, local switch, controller, and dhcp server and can find no issue with the configuration..
I am not sure why as I am not using DOT1X at all. The guest is a pass-thru and the WPA2 network is just WPA + WPA2 with TKIP and AES. No DOT1X anywhere on the controller...
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Aug 18, 2012
cisco 878 configured to accept client vpn requests. From client prospective people get error 412 and they can't connect. Not sure what s wrong, following configuration and debug isakmp. Autentication is through a radius server.
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Sep 13, 2011
I have a AIR-AP1121G-A-K9 running c1100-k9w7-tar.123-7.JA2 (Autonomous)We have monitoring setup with Orion NPM and we consistently see output errors, Transmit discards and big buffer errors The users at the site have not reporting any issues but was wondering how to prevent these or are these normal?What causes the output errors on Wireless Radio ? How to troubleshoot further ?
Radio0-802.11G
Total Output Errors 0 47749
Small Buffer Misses
4 misses
139 misses
[code]....
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Aug 22, 2012
I've just bought an AIR-WLC2106-K9 and 3 x AIR-LAP1142N-E-K9 and I'm having a problem getting the AP's configured.
Firstly, the controller did not discover the device when it was on the same sub net, I had to plug it straight in which is no good for wireless-n due to the 100Mbps port speed on the controller. Secondly, when I am editing the AP through the controller webpage, none of the details are saved after applying changes (static IP etc).
I followed the Cisco quick start guide for the controller to get the basic config, radius server details etc in. It is running software version: 4.2.61.0
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Nov 28, 2007
I am trying to get a controller to work on my network. output from the switch arp table.
Internet 172.28.227.2 0 001b.d5cf.79c0 ARPA Vlan103
Internet 172.28.227.1 - 001c.b1ad.7400 ARPA Vlan103
Internet 172.28.227.12 0 001d.a1cc.b7f8 ARPA Vlan103
controller config:
Interface Name................................... management
MAC Address...................................... 00:07:0e:25:ac:a0
IP Address....................................... 172.28.227.2
IP Netmask....................................... 255.255.255.0
[code]....
The switch see's it but i can not ping or access it via web or telnet.
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Oct 3, 2012
we have the WLC and 2 x Aironet AP's that is powers over PoE. The other day is was reloaded and since then the AP points are Blinking Red, according the the Aironet manaul this means some sort of boot error? They are also not appearing on the WLC from the GUI or CLI running a show ap summary. Interesting though I can see them via CDP, however they are not picking up IP's as they are listed as 0.0.0.0. After checking with colleagues I was told these were set statically.
Is it possible that the points not having IP addresses is a sign of a corrupt boot environent? I would have though they would not have appeared in CDP if they were corrupt?
I did not set this up in the first place so a little puzzled at the moment? Nothing has changed on the config bar using a different NTP server on the network?
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Dec 11, 2012
I am about to configure a brand new AIR-WLC2106-K9 V05 and didn't manage to find what is the deafult IP address configured on the device. I need it so I could start Web GUI management session.
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Mar 2, 2013
I have a WLC2106 and AP3502i. The issue that I am having is the radio for 5GHz is not showing up in "Wireless > 802.11a/n" (see attached screenshot) I am not exactly sure what was the problem. When I went to 802.11b/g/n I do see an entry for 2.4Ghz radio, but nothing on 5GHz.
I have the AP plugged directly to my 3550POE, and when I used the command "show power inline" it says that the switch is providing 15.4W and there is still 345W remaining on the switch. The LED on the AP is solid green. I issued a no shutdown on dot11radio1 and the status is up/up, but there is still no entry under "Wireless > 802.11a/n"
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Feb 15, 2013
I have a WLC 2106 which is configured and working as follows: [code] how do i get the AP at Site B to use the local server (10.0.28.x) to hand out DHCP leases?
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Jan 3, 2012
trying to export WCS data in order to migrate to the NCS but getting bellow error messages while following the Exporting WCS data doc:
D:Program FilesWCS7.0.172.0in>export D:wcs.zip
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
The procedure i am tring to follow:
To export WCS data, follow these steps:
#Step 1 Stop the WCS server.
#Step 2 Run the export command through the script file and provide the path and export file name when prompted.
#Step 3 For Linux, run export.sh all /data/wcs.zip. For Windows, run export.bat all datawcs.zip.
I do have enough available space, the WCS runs as VM
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Feb 18, 2013
I get the following error whne enabling 802.11a network on a AIR-WLC2106-K9. Country is set to ID (Indonesia),>config 802.11a enable network802.11a network not supported for this Country CodeYet, on a AIR-CT2504-K9, set to same country code there is no problem. Is this a WLC model or version issue? WLC2106 is on version 6.0.199.4 while the CT2504 is 7.0.220.0
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Feb 24, 2011
OS: Windows Vista Home Premium?Trying unsuccessfully so far to reconnect a client machine to a wireless network that it has been on for a year or so.ISP was down for about 2 hours the other day and when it came back up, the client machine started getting the IP address conflict. Went in to release and renew and got the following error messages:
on release: An error occurred while releasing interface Wireless Network Connection: An address has not yet been associated with the network endpoint.
on renew: The DHCP client has obtained an IP address that is use on the network. The local interface will be disabled until the DHCP client can obtain a new address.
The next thing I tried was to go in an give a manual IP address to the Wireless Adapter. But the TCP/IP properties are greyed out and I receive the following error message:Some of the controls on this property sheet are already open. To use these controls, close all these property sheets and then reopen this one.
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Apr 26, 2013
I am in the process of building a small educational lab. I just want to make sure that I am not going to have any AP registration/join issues due to regulatory compatibility with a AIR-WLC2106-K9 controller and a AIR-LAT1142N-N-K9 access point. Will this work and if so, will I then be in the clear as far as having devices like my computer and phone attach to the SSID?
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Mar 13, 2012
I bought 6 air-lap1042n-a-k9 for our business. They are mounted. I bought a Cisco POE switch for them. I hooked them up and realized they needed a Wireless LAN Controller. I have never dealt with these before. From my research, I need to buy AIR-WLC2106-K9.Can I just connect my POE switch to the LAN Controller to configure all 6 access points that are connected to the POE switch?
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Sep 11, 2012
I´ve implemented 2 Cisco ISE v1.1 in HA to run MAB and 802.x Authentication / Authorization. Using Local ISE DB and Active Directory as an External Identity Source for wireless and wired users and devices. This was working fine 2 weeks ago after finishing installation.
My NAD devices are a Core SW 6500 for wired users (there are no access SW, just the Core for the whole network, its a small office) and a WLC 2405 for Wireless Users.[code].....
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Dec 14, 2012
I have 2691 Router conencted to Internet and it is doing Nat.
This connects to 3550A Switch which has connection to 1811W Router.
I setup VPN between 1811W and 3550A.
3550A has connection to 2691 via ospf.
OSPF is running between 1811w and 3550A.
1811
1811w# sh crypto isakmp sa
IPv4 Crypto ISAKMP SA
[Code]....
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Feb 16, 2011
Getting this error on the data center 2581 (12.4(24)T) from a GRE/IPSEC tunnel, remote branch is 2811 running 12.4(25d)
%CRYPTO-4-RECVD_PKT_MAC_ERR: decrypt: mac verify failed for connection id=
The tunnel has been up and working okay for months, nothing has changed on the config and the key is correct. Traffic is following but remote users are complaining of performance issues. A wireshark shows checksum errors and lots of packet resends. Remote ISP has checked the circuit and says its clean.The data centre router has quite a few tunnels but only 1 causing this issue. From the head end router -
sh crypto ips sa | b x.x.x.x
current_peer x.x.x.xport 500 PERMIT, flags={origin_is_acl,} #pkts encaps: 15129, #pkts encrypt: 15129, #pkts digest: 15129 #pkts decaps: 13346, #pkts decrypt: 13346, #pkts verify: 13346 #pkts compressed: 0, #pkts decompressed: 0 #pkts not compressed: 0, #pkts compr. failed: 0 #pkts not decompressed: 0, #pkts decompress failed: 0 #send errors 1, #recv errors 1992
Can a VPN module go bad like this? I've tried disabling the branch onboard engine and using software but it doesn't work.
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Mar 7, 2013
I have a problem in my IPSec tunnel. One of the routers (Cisco 861) doesn't encrypt the packets but does decrypt the incoming ones from the remote peer (RV042). In the access-list for the wan interface I deny the traffic between the subnets and in the vpn access-list I permit the traffic.
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May 19, 2011
I am getting "an error occurred while reconnecting...etc" when a previously successful drive mapping suddenly does not work. The short answer is to disconnect, then re-map the drives, but that is a real pain when you are accessing the same shares all day, and it seems to drop out whenever it feels like it.
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Apr 21, 2011
why cant i sign in to my psn ?
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Dec 14, 2012
I have 2691 Router conencted to Internet and it is doing Nat. This connects to 3550A Switch which has connection to 1811W Router.
I setup VPN between 1811W and 3550A. 3550A has connection to 2691 via ospf.
OSPF is running between 1811w and 3550A.
1811
1811w# sh crypto isakmp sa
IPv4 Crypto ISAKMP SA
[Code].....
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Apr 28, 2011
i have a problem with the playstation 3 system when i sign in it takes a while todo that all of a sudden a error appeared on my screen saying "An error occured (80023121)" and me and my dad try to fix the problem but nothing seems to be working
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Feb 17, 2011
I have been trying to get Airprint to work in our network. Topology is a 255.255.255.254.x network that has mostly wired with wireless all under the same subnet. Airprint will not discover printers if on the WLC2106 WiFi network but if the iPad or iPhone is connected to some small Linksys WiFi router, it works.
What should be enabled or disabled on the WLC2106 to get Airprint to work?
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Oct 12, 2011
I'm working on a Dell Vostro 220s running Windows XP with an integrated NIC. It had a few hundred viruses on it and after removing them, I can't get an internet connection. The icon says connected with 0 packets sent and 0 packets received. DHCP is enabled and other computers on the network can connect to the internet. The drivers are installed and detected as working properly. I have rebooted also, with no luck. Ipconfig fails with the error "An Internal error occurred: The request is not supported."
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Dec 25, 2012
I have a PS3 and I just got wireless internet. I was excited to update games and such and I knew it would be fast because both are close together. Every time I get done downloading one update, it gives me an error and I've found it to be dmz.
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Sep 3, 2012
I am running a Windows 7 Professional 32 bit as my office computer. About 3 PCs in the office are connected to the office server through wireless connection (including mine), and another 3 are connected through a wired connection. My connection to the server doesn't work at times. I get an error message that "An error occurred while connecting to . The network path was not found." The other PCs using the network have no problem connecting to the server. Also, the internet connection is shared from the server and I have no trouble with it. The problem is only with accessing the shared folder on the server.
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Dec 3, 2011
This log message is produced Catalyst4507R+E.The device is inserted SUP-7 with 3.1.0SG Image.With this log message, the device produced duplication packet of multicast. Dec 2 16:40:00.276: (Suppressed 269 times)Dup Packet Fail for Sw Port
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Sep 13, 2012
I have just setup a vWLC for lab purposes and it´s up and running. I have a few used 1131 LAP:s that tries to join the AP but I just get DTLS certificate errors like these:
*Sep 14 13:25:27.229: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio1, changed state to up
*Sep 14 13:25:27.258: %LINEPROTO-5-UPDOWN: Line protocol on Interface Dot11Radio0, changed state to up
*Sep 14 13:25:36.198: %CAPWAP-3-ERRORLOG: Go join a capwap controller
*Sep 14 13:26:41.000: %CAPWAP-5-DTLSREQSEND: DTLS connection request sent peer_ip: 192.168.1.105 (code)
These AP:s (I have tried 2 so far) have earlier been in use connected to a cluster of 5508:s.
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May 1, 2012
I'm trying to open certain websites but the browser gives me this message: "Network Error (tcp_error) A communication error occurred: "Operation timed out" The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.
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Aug 7, 2012
After upgrading my 5508s to 7.2.110.0, they are reporting mobility data path errors to one of my WiSMs running 7.0.235.0.
I get these messages on the 5508s reporting that it can't send a ping to the affected WiSM:
*ethoipSocketTask: Aug 08 21:15:41.175: %ETHOIP-3-PKT_RECV_ERROR: ethoip.c:341 ethoipSocketTask: ethoipRecvPkt returned error
*ethoipSocketTask: Aug 08 21:15:41.175: %ETHOIP-3-PING_RESPONSE_TX_FAILED: ethoip_ping.c:312 Failed to tx a ping response to <ip address>, rc=5
But maybe there is another clue because I also see in the same log these errors referencing the same WiSM:
*bcastReceiveTask: Aug 08 21:15:45.310: %LOG-1-Q_IND: mm_dir.c:1969 Failed to recreate the SSH Rule for <ip address>.
*mmSSHPeerRegister: Aug 08 21:15:44.829: %MM-1-SSHRULE_CREATE_FAILED: mm_dir.c:1969 Failed to recreate the SSH Rule for <ip address>.
Why is the controller trying to SSH to another controller? Was some SSH related feature added to 7.2 that has been accidentally enabled?
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