Voice over WLAN Controller 4402

Hi,
I am trying to get QoS running on a 4402 controller and am having some challenges. I have created a Voice VLAN and have placed its SSID into the Platinum Prfile. The port coming out from the controller is setup as a dot1Q trunk.
When I span the controller port and run a sniffer trace I see that phones QoS settings are still being set as best effort 00.
Any recommendations would be appreciated
Thanks

Hi
When you say it's marked as 00 are you talking COS or DSCP?
If you look at the Platinum QoS profile in the Controller's Web GUI, you'll see a box named 'Wired Protocol' or something like that... This you can change to dot1p, at which point a '6' in a box will appear. Setting this to '5' should bring it in line with other Cisco kit.
I'd also clear off the unnecessary commands on the switch port:
switchport priority extend trust
auto qos voip trust
Finally - if you are using VLAN2 for one of the wired VLANs (especially the Voice VLAN) set the native VLAN to another unused one... the native VLAN won't have any CoS marking on it. Alternatively if you can confirm from your network capture that packets are DSCP marked correctly you can just set the port to 'mls qos trust dscp'.
Regards
Aaron
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WLAN Controller 4402 - Port HA Fails

We have a WLAN Controller 4402, with firmware version 4.0.206.0. The ports are connected to 2 separate switches. 'ap-manager' is on port 1, and 'ap-manager 2' is on port 2. The wireless network is running fine when both ports are connected. However, when I disconnect port 1, the client be disassociated, then re-associated, but unable to grab DHCP IP address. I have also assigned a static IP address on the client, but is unable to ping anywhere, not even the gateway. From what I understand, the ports should be able to backup each other in case of failure, but the HA does not seem to work. What could be wrong?

Let me make sure I understand something about this bug your referring to. In order to see if this might be affecting us I would want to change my controllers ap-manager interface gateway address from that of the hsrp address, to one of the actual ip addresses setup on the router right?
I think this might be the problem with my rollout. Seems like ever so often everyone looses their wireless connection. you can be working one minute perfect signal and everything, then without moving or anything boom your disconnected. Just recently converted every AP to WCS/WLC and then this started happening.
My concern is that I have two VLANs setup for my wireless with HSRP. One VLAN for all my AP's and ap-manager interface and such. One VLAN for wireless clients.
Both VLANs setup on the core 6509's with the standby IP as the default gateway.
Wondering if the problem is only related to the vlan for ap-manager interface? Are maybe I need to do the same for the wireless lan interface for the clients?

Wlan Controller 4402 with 15 APs (1242 ag)

Can anyone help me to configure 4402 wlan controller ( deploying procedure ) with 15 access points .
Rgds,
Senthil

Hi Senthil,
Very broad question but I will send you some links and see if that helps. You can please come back if you have any doubts on the same.
http://www.cisco.com/en/US/docs/wireless/controller/4.2/configuration/guide/c42lwap.html
http://www.cisco.com/en/US/docs/wireless/controller/4.2/configuration/guide/ccfig42.html
HTH
Ankur
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1131ag LWAP in WLAN controller 4402

Hi, i have 1131ag but at controller 4402 i see Number of radio interfaces 2, 802.11b/g/n admin status enable, oper status up and regulatory domain supported, but en 802.11a/n admin status enable, oper status down and regulatory domain not supported, why 802.11a is not supported?

hello, AP is the model AIR-LAP1131AG-A-K9 and I configured the controller with the code of mexico MX. Now try the U.S. code, but it is the same result.
Juan Ramon
thanks....

Voice over WLAN - Cisco 2504 and iPhones/Androids

All:
I'm working on a solution for someone who already has a Cisco WLC 2504 running 7.6.100 and 2602i APs. They are running iPhones with a SIP application instead of purchasing Cisco 7925G phones. They are having issues when roaming to different APs.
Site survey is good. I also used a laptop with Net Surveyor on it - signal looks good. SNR is good. They used to have coverage issues as well but I got that taken care of for them. Only issue now is roaming.
WLAN SSID:
-Qos: Platinum
-FT-PSK and PSK enabled
802.11a/n/ac Radio:
-Client Roaming: -67dBm for RSSI threshold and -62dBm for scanning threshold.
-Disabled 6mbps and 9mbps and 12 mbps is set to mandatory. All others are supported
802.11b/g/n Radio:
-Client Roaming: -67dBm for RSSI threshold and -62dBm for scanning threshold.
-Disabled 1mbps - 12mbps. 18mbps set to mandatory. All others are supported
Switch to which WLC is connected:
-switch ports used to connect to the controller are set to trust CoS and ports to APs and uplinks are set to trust DSCP.
With these setting changes - I believe most everything else is default. I am confused about the following:
-Best practice link - http://www.cisco.com/c/en/us/td/docs/wireless/technology/vowlan/troubleshooting/vowlan_troubleshoot/2_Gen_Troubleshooting_Guidelines.html
Says to configure voice WLAN to use 802.11a. Issues with that: Some Android's could not connect AND the big one - I am not able to set Qos to use 802.1p for the SIP WLAN. It tells me to disable 802.11a and 802.11b. If I go into each radio on 'Network' tab and disable these - NOTHING can connect to any SSID. So unless I've misunderstood something - this is a contradiction in the best-practice link I posted above.
another question: If I enable FT-PSK and PSK - for devices that support FT-PSK (which i'm under the impression is 802.11r) will these devices use that and for devices that don't they'll use 'regular' PSK? How do I know if my client is connecting using PSK or FT-PSK as both are enabled on the same WLAN.
Again - only issue is roaming. I second or two of 'choppy' voice then everything is back to normal working as expected. Any ideas as to what else I can enable to get these iPhones to roam better - if this is even possible. Can iPhones roam using a SIP app with zero voice interruption? This is the equipment that they got and can't get anything else so I got to make the best of this. Perhaps I've already done that? Any ideas/suggestions are very much appreciated.

Hi
Before any other think I would like you to upgrade your WLC image to 7.6.130.0 & FUS to 1.9.0.0. FUS upgrade will require 30-40min downtime to your wireless.
http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus_rn_OL-31390-01.html
http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn76mr03.html
It tells me to disable 802.11a and 802.11b. If I go into each radio on 'Network' tab and disable these - NOTHING can connect to any SSID. So unless I've misunderstood something - this is a contradiction in the best-practice link I posted above,
This simply says, you have to disable radio band before changing QoS profile values. Once you change those value you can re-enable the radio band. :)
If I enable FT-PSK and PSK - for devices that support FT-PSK (which i'm under the impression is 802.11r) will these devices use that and for devices that don't they'll use 'regular' PSK? How do I know if my client is connecting using PSK or FT-PSK as both are enabled on the same WLAN.
Read these 802.11r post & you will understand how 802.11r works. There are certain client devices does not like PSK & FT-PSK capability advertise on the same SSID & may have connectivity issues. But most of the clients like iPhone, iPads,etc will connect without any problems.
http://mrncciew.com/2014/09/06/cwsp-802-11r-ft-association/
http://mrncciew.com/2014/09/07/cwsp-802-11r-over-the-air-ft/
http://mrncciew.com/2014/09/08/cwsp-802-11r-over-the-ds-ft/
"show client detail <mac_address>" should indicate if client connected over FT-PSK or PSK.
HTH
Rasika
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Why A is better than B/G for Voice over WLAN

Hello all,
Now this post has some questions and statements in that you guys know all about and would like your valued advise and corrections/confirmations on the points.
Why A is better than B/G for voice:
B/G is congested, ie BT, Microwaves. Lots of other WLANs etc etc etc - FACT!
More non-overlapping channels - FACT!
The scatter and reflection on A is better than B/G. The idea being, the higher the frequency, the better the scatter. Would this be correct?
Higher frequencies produce better penetration results through walls, I have read. Or is it worse. Cisco say worse in the document "2.4 GHz waveform of 802.11b and 802.11g can pass through many walls. The 5 GHz waveform of 802.11a has approximately half the tendency for a given power to transmit suitable amounts of energy through walls because of its higher frequency" Ref: enterprise mobility guide. I am a little confused on this ?
A travels thru water and other moisture better than B/G, thus damp walls, wet walls, open areas (lets say between two buildings) would handle A better than B/G?
The Fresnel Zone (clearance required of an obstacle without degrading signal) is better on the A band due to a small wavelength size. Would this be a major factor for an RF design engineer? Any more technical "dummies guide" to this subject would be good?
OFDM handles signalling shortcomings like multipath fade better that previous modulations techniques (I know that G 11Mbps and above uses this also). Anyone have an English explanation to why this is? Also, please look at the graphic attached that shows the enterprise mobility guide in chaper 3, the table. What is the difference between the modulation and transmission type as many people refer to DSSS and OFDM as "modulation" I am a little confuse by this table.
Can anyone give me any more reasons and facts, and clarify any of the points above so when someone comes to me and says, "ahh, just roll out voice on B/G" I can say well this is why not?
Many thx indeed,
Ken

You have some good questions. The main reason why people are moving voice to 802.11a is the fact that there is more congestion in the 2.4GhZ spectrum. For example in a downtown area building. There are so many wifi devices out in the 2.4Ghz along with all the other interference that you get on that spectrum. 802.11a, the 5Ghz is a shorter wavelength, so the more it is susceptible to attenuation. The lower the frequency the better the signal can travel through various materials. Look at cell phones.... they are in the 800mhz or lower spectrum and they have greater distances than higher frequencies. Another reason is that if you have guest access, you have to look at devices you need supported. There might be legacy 802.11b clients or newer clients that only support 802.11b or 802.11g. So now the 5Ghz is open which give you more bandwidth for voice.
Water is an RF killer no matter if you use 2.4Ghz or 5Ghz.

WLAN controller 4400 series, use service-port for initial configuration, IP address?

Hi, Everyone,
I just got a new Cisco Wlan controller 4402 from somebody else but I can't find a suitable console cable( DB-9 console on the controller) , I googled everywhere and I read I could use service port to do the initial configuration, the CISCO FAQ says initial IP for service port is 192.168.1.1, I tried use Cross-over cable to connect a PC to the service port directly and use a normal cable with a switch to connect the service port and a PC, both of the connections do not work out: from the PC, I can't ping 192.168.1.1 ( PC IP changed to 192.168.1.20) , nor can I go http://192.168.1.1 . The service port Link is solid GREEN and ACT is solid GREEN, the PC NIC says Connected with 100 Mbps , so I'm wondering the IP address of service port is not 192.168.1.1? Please help.
Any sussgestions and advices are greatly appreciated.

Hi,
plz connect service port to the switch port that should be configured as access.
connect a pc (ip address - as u mentioned) to the other port of the switch. both wlc and pc should be in same vlan (create a temperary vlan).
try https to access the wlc.
Thanks

Data flow using a WLAN controller

Can someone explain the flow of data from wireless client to some destination in the internal network (or the Internet) using a WLAN Controller? Use a 4402 as an example.
Specifically, I am wondering if client traffic actually passes thru the WLAN Controller (4402). I am reading the configuration guide and it doesn't seem to be explicitly stated one way or the other.

Hi Ken,
This is a very common question these days.
Here is a recent thread as well as an excerpt from a good doc:
http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=Getting%20Started%20with%20Wireless&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddaca5d
In the Cisco Centralized WLAN architecture, LWAPP-enabled access points operate in the lightweight mode (as opposed to the autonomous mode). The access points associate to a Cisco WLAN controller. The controller manages the configuration, firmware, and control transactions such as 802.1x authentication. In addition, all wireless traffic is tunneled through the controller.
LWAPP is an IETF draft protocol that defines the control messaging for setup and path authentication and run-time operations. LWAPP also defines the tunneling mechanism for data traffic.
In an LWAPP environment, a Cisco Aironet LWAPP-enabled access point discovers a controller by using LWAPP discovery mechanisms and then sends it an LWAPP join request. The controller sends the access point an LWAPP join response allowing the access point to join the controller. When the access point is joined, the controller downloads its software if the versions on the access point and controller do not match.
LWAPP secures the control communication between the access point and controller by means of a secure key distribution, utilizing X.509 certificates on both the access point and controller.
From this doc:
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_quick_start09186a00805100f5.html#wp47092
Hope this helps!
Rob
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WLAN Controller - reg

Hi, I have been working with WLAN controller 4402 for a while now however some strange thing happened this morning. all registered LWAP APs disappeared. upon rebooting, all of the APs came back (registered) but started disapperaring one by one after a few seconds. anyone knows whts happening?

Hi, I checked the time on the controller and adjusted it accordingly but the same thing keeps happening. the debugs show the controller receiving LWAPP Discovery Requests and responding succefully yet nothing else happens.
below is some logs
P Disassociated. Base Radio MAC:00:1b:2a:12:71:50
2 Tue Jun 10 08:11:16 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:50 Cause=Max Retrasmission
3 Tue Jun 10 08:11:16 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:50 Cause=Max Retrasmission
4 Tue Jun 10 08:11:04 2008 AP with Base Radio MAC 00:1b:2a:12:71:50 (NSSF-BLKA08thfloor-AP08B) is unable to associate. The regulatory domain configured on it '-E' does not match the controller's country code: Argentina
5 Tue Jun 10 08:11:02 2008 AP Associated. Base Radio MAC: 00:1b:2a:12:71:50
6 Tue Jun 10 08:10:59 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:71:f0
7 Tue Jun 10 08:10:59 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:f0 Cause=Max Retrasmission
8 Tue Jun 10 08:10:59 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:f0 Cause=Max Retrasmission
9 Tue Jun 10 08:10:58 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:70:a0
10 Tue Jun 10 08:10:58 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:70:a0 Cause=Max Retrasmission
11 Tue Jun 10 08:10:58 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:70:a0 Cause=Max Retrasmission
12 Tue Jun 10 08:10:58 2008 AP Disassociated. Base Radio MAC:00:1e:7a:3a:a9:90
13 Tue Jun 10 08:10:58 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1e:7a:3a:a9:90 Cause=Max Retrasmission
14 Tue Jun 10 08:10:58 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1e:7a:3a:a9:90 Cause=Max Retrasmission
15 Tue Jun 10 08:10:56 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:71:20
16 Tue Jun 10 08:10:56 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:71:20 Cause=Max Retrasmission
17 Tue Jun 10 08:10:56 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:71:20 Cause=Max Retrasmission
18 Tue Jun 10 08:10:56 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:72:50
19 Tue Jun 10 08:10:56 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:72:50 Cause=Max Retrasmission
20 Tue Jun 10 08:10:56 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:72:50 Cause=Max Retrasmission
21 Tue Jun 10 08:10:53 2008 AP Disassociated. Base Radio MAC:00:1b:2a:12:70:20
22 Tue Jun 10 08:10:53 2008 AP's Interface:1(802.11a) Operation State Down: Base Radio MAC:00:1b:2a:12:70:20 Cause=Max Retrasmission
23 Tue Jun 10 08:10:53 2008 AP's Interface:0(802.11b) Operation State Down: Base Radio MAC:00:1b:2a:12:70:20 Cause=Max Retrasmission
24 Tue Jun 10 08:10:48 2008 AP with Base Radio MAC 00:1b:2a:12:71:f0 (NSSF-BLKA05thfloor-AP05B) is unable to associate. The regulatory domain configured on it '-E' does not match the controller's country code: Argentina
25 Tue Jun 10 08:10:47 2008 AP with Base Radio MAC 00:1b:2a:12:70:a0 (NSSF-BLKA06thfloor-AP06B) is unable to associate. The re

Welcome to the Voice and Video over WLAN Discussion

Welcome to the Cisco Networking Professionals Connection Wireless Forum. This conversation will provide you the opportunity to discuss issues surrounding Voice and Video over WLAN. We encourage everyone to share their knowledge and start conversations on issues such as bandwidth intensive wireless applications, and any other topic concerning Voice and Video over WLAN.
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We encourage you to tell your fellow networking professionals about the site!
If you would like us to send them a personal invitation simply send their names and e-mail addresses along with your name to us at [email protected]

This is easily done with dial peer statements . The dial peer in your originating router must route the calls to the terminating router first. That would look like :
dial-peer voice xxxxx voip ( the xxxxx is just a tag)
destination-pattern 45... (that would route any 5-digit calls beginning with 45)
session-target ipv4:xxx.xxx.xxx.xxx (ip address of the terminating router)
If digitones are to be dialed after the connection is established, use the statement:
dtmf-relay-h.245-alphanumeric
You could also use a statement to specify the codec to be used:
codec g711ulaw
You would need multiple voip dial peers if the calls were going to different routers based on the dialed digits. If all calls are sent to the same terminating router, use all wild cards in the dest-pattern statement.
At the terminating router configure pots dial peers:
dial-peer voice xxxxx pots
dest-pattern 45...
port x/x (whichever port the call is to be terminated on)
prefix 45 (this re-inserts matched digits which are stripped off by the pots dp)
Repeat for other ports which will receive calls.
Paul

I need to bridge a printer off a wireless bridge using a 4402 WLAN Controller

I need to bridge a printer off a wireless bridge using a 4402 WLAN Controller. Would I need to make any changes on the 4402 WLAN Controller?

One options is to take a cisco autonmous access point and configure it as a WGB. And no, you would not have to do anything special to the WLC in thay deisgn. The WGB would act as a wireless client.
Make sense?

Cisco 1010AP Can't find 4402 WLAN controller

Hi folks,
I'm running a 4402 WLAN controller running 5.2 code. I've got some 1010APs that don't associate with the WLC. I'm trying to keep the setup basic. The access points are plugged into the same VLAN as the native vlan for port1 on the controller. I've setup a DHCP server in the manner documented. The WLAN controller is configured as a master server. This is the message that I get in the web interface for WLC:
AP with MAC 00:0b:85:6e:4a:90 (AP 1010 #1) is unknown.
Any clues as to what I'm doing wrong?

Hi Daniel,
You won't like this I'm sure, but this is why the 1010 is not working;
**Note: Controller software release 5.0.148.0 or later is not compatible with Cisco Aironet 1000 series access points.
http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn52.html
Hope this helps!
Rob

WLAN controller redundancy over IP VPN

Customer currently has a Cisco 5500 WLAN controller at one of our datacenters. They want to add a WLAN controller as redundancy at their local site which shall be used as a secondary failover controller. This site is reachable over VPN. Which redundancy options do I have here? As i understand with HA functions the controllers has to be within the same L2 network and have low latency. Is my only option here to manually configure a new controller, buy double the AP licenses and copy the config from the old one? And if the first fail the APs would need to reboot and reassociate with the secondary controller?
Would be really greatful if someone could point me in the right direction :)

You have a few options ..
1. Buy two fully licensed controllers. One primary one secondary and configure as such.
2. HA N+1 where you buy one fully licensed controller and one HA controller or a controller with a minimum of 50 licenses. Put the secondary controller into ha mode and it will go to max licenses.
http://www.cisco.com/c/en/us/td/docs/wireless/technology/hi_avail/N1_High_Availability_Deployment_Guide/Licensing.html
3. APSSO AND CLIENT SSO this is where you need layer 2. There is a data base that syncs between the
http://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/7-5/High_Availability_DG.pdf

Voice over IP Roaming problems between 2 Wireless Lan Controllers.

Hello,
we have problems with Voice over IP roaming between 2 Wireless Lan Controllers, this problem is not always happening. I have attached the detailed configuration. We are using LWAPP 1242 & WLC 2106 Controllers.
The phones they are using are Siemens Enterprise optiPoint WL2.
Is there maybe something wrong with the configuration our can I try some different settings?
Regards,
Jordy Broekhuizen

When a wireless client associates and authenticates to a WLC, it places an entry for that client in its client database. This entry includes the MAC and IP addresses of the client, security context and associations, quality of service (QoS) contexts, the WLAN, and the associated LAP. When a client roams to another LAP associated to the same WLC, it just updates the client database with the new LAP information so that the data can be forwarded appropriately to the client. When a client roams to a LAP associated with a different WLC, either in same or different subnets, it sends the information in the client database to the new WLC. This helps client to retain its IP address across roams and maintain uninterrupted TCP sessions. For more information on roaming in the WLC environment.
For the further description following URL for the WLC may help you
http://www.cisco.com/en/US/docs/wireless/controller/5.1/configuration/guide/c51ovrv.html

WLAN Controller Required?

Currently developing a solution to convert simple Windows wired domain to wireless.
Considering using ten Aironet 1100 APs for 200 Windows XP clients on a single network/domain. Clients will authenticate using certificates with RADIUS (IAS) over EAP-TLS. Each Aironet will support 20 clients and will be wired back to the RADIUS server.
What Cisco software is required on the 1100s and what WLAN controller (if any) is required?
Thanks!

If you plan on using the Cisco Unified Wireless Solution, you would require a controller. Different models supports different number of AP's. For 10 Ap's which would be required in your place, a 4402 controller which supports 12 AP's should be a good choice.
The AP's download the code from the controller and hence just need a recovery image. The controller would come preloaded with the software required and you can upgrade to th latest code. Please refer toe the documentation below.
http://cisco.com/en/US/prod/collateral/wireless/ps5678/ps6521/product_at_a_glance0900aecd805df476.pdf
Pushkar

Voice over WLAN Controller 4402

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