Cisco :: AP Roaming With Cisco 7925G
Feb 18, 2013
Having a hard time getting Cisco phones to roam 'cleanly' in a Cisco unified wireless environment; Cisco 2504 controller with Cisco LAP1142n (lightweight) APs. The phone SSID is not broadcast and is using WEP encryption. The problem is that when the user is walking around the property, traversing from AP to AP in-call (external and internal calls), they notice the point at which the phone roams from AP to AP - it's literally two or three seconds of no sound and then the call resumes back again. Fast SSID change has been enabled, we've tried locking the SSID to 802.11a only, b only and g only but with only slightly better results when locked to B. We've lowered the client roaming threshold RSSI to -75dB from -80dB, this also yielded better results but still a couple of seconds gap exists. Cisco TAC came in on a Webex session earlier, changed a few QoS settings and advanced wireless settings on the controller, but to no avail. Wireless signal has been proven to not be an issue; several AIRMagnet PRO surveys have been carried out showing the signal throughout the property to meet the -67dB requirement.
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Mar 27, 2013
Any 3rd party CA to provide a root cert for the ACS & verify csr's generated by the 7925's? I've spoken with customer service at Verisign and GeoTrust and either i'm explaining it totally wrong or their not providing CA services for this type of secured environment. sHA1 using EAP-TLS.
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Feb 1, 2011
We have a UC500 with 3 access points AP541N. We need to move around the building so we use wireless voice with 7925G phones. All works fine except when the phone needs to change from one AP to another. We lost connection for a small interval of time and then resume normal operation.
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Jul 21, 2011
I have more different client networks with one ssid, when a client is in another network gets an ip it still from the old network.
How can I to the wlc change this so he gets one right address. I have a Cisco WLC 5508 and 1262/1252 Access point
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Feb 12, 2013
I have an issue where I have an AP in one room and another in another.When I walk from one room to the other, I lose signal but manages to see the SSID and join.But, I cannot seem to surf the Internet, I have to manually disconnect and reconnect. Normal wireless routers I reconnect seamlessly without any manual disconnect & reconnect.Currently using cisco 5508 and ap2600.
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Mar 1, 2012
I currently have a UC540 system with 12x aironet 1130 APs. Seamless roaming does not seem to work, and the recommendation seems to be to introduce a WLAN controller.
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Apr 22, 2013
I´m trying to find the best configuration to improve the roaming in a WLC 7.3I changed the power threshold under the TPC to -67 and in the client roaming I put in custom mode and the minimun RSSI in -78 dBm.but I was wondering if there is a specific configuration to improve the roaming.
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Apr 7, 2011
Currently have a 5508 in the lab and testing 4 AP's with it. Eventually there will be 18 AP's spread thru out different floor in our building.
So far access is working fine using WPA, 802.1x and the client configured to use windows logon credentials..But it doesn't seem to automatically transfer between access points.
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Feb 9, 2011
I have 3 Cisco 1242 WAPs that I have deployed at a site that has NO RADIUS/AAA devices. I have given all of them a different channel (1,6,11), but the same SSID and crypto (WPA2-PSK). The issue is when a machine boots up it associates with the closest/strongest AP, but as the device "roams" it does not which to a different AP. It stays associated with the original AP until that signal is gone. Then it quickly associates with the closest AP with no problem.
How do I get the device to associate with the strongest WAP? I have research "fast roaming and WDS" but it seems like you need EAP/LEAP and they do NOT have that at all.
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Mar 9, 2013
have configured Cisco IPPhone 7925G with EAP-TLS setting. (With manufacture installed and Userinstalled certificate). My issue is while roaming from 1 AccessPoint to another AccessPoint the call getting droped. I need to restart the IPPhone to reauthentiate again. In ACS am agging the authentication time-out error. (I had changed the time out value for EAP-TLS to 20 in WLC as per recommendation.)
If am using static web key there is no issue in roaming.
What is the reommended setting inorder for the EAP-TLS to work properly.
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Feb 20, 2011
I have configured some iPads and iPhones to Connect to an ASA via AnyConnect (ASA 8.4(1), iOS 4.2.1, AnyConnect 2.4.4009).I have configured the devices with the "iPhone Configuration Utility" (iPCU 3.2.0.267).
My question is: How to configure the "Network Roaming" feature of the AnyConnect via the iPCU?I can configure everything else correctly with the iPCU (server, certificate, connect on demand, proxy settings,...) but as mentioned NO network roaming!
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May 27, 2013
I am having some troubles with client roaming on a 5508 controller running firmware 7.3.101.0. As soon as a client roams outside the range of an AP they lose data flow and do not seem to transition to another AP for about 1 minute.This is a small network with 6 x AIRCAP3502E-N-K9 AP's (running in H-REAP mode) on the same floor and clients are a mix of HP notebooks, Mac Books, iMacs, iPads and iPhones. There are several seperate SSID's setup and the problem occurs on all. All are WPA2/AES with either a PSK or 802.1X. Both 2.4GHz and 5GHz radios are enabled with auto power and channel selection.
I have tried changing the roaming settings from default and also playing with the AP power settings to no avail.Is this normal behaviour or is there something I can do to improve the reconnection speed?
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Feb 10, 2013
Under the section intra controller roaming, WLC 7.0 config guide states that " When the wireless client moves its association from one access point to another, the controller simply updates the client database with the newly associated access point. If necessary, new security context and associations are established as well" URL.Within the phrase "If necessary, new security context and associations are established as well" . What is meant by the new security context ? My understanding is that only an update to the MSCB (with the AP info) is the only requirement as the client is within the same controller and subnet.I just can't think why would the security info needs to be updated.
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Dec 21, 2011
We have some remote H-READ APs at a branch office and a 7921 phone which drops calls/loses audio when roaming between APs.We are just using WPA2 without any 802.1x or CCKM/PKC.
Do we absolutely have to set up a radius server/8021.x/EAP to enable fast roaming?We had 2 AP's autonomous with WPA2 before and roaming didn't seem to be an issue. We now have 4 APs over WLC in the same office and the phone calls are very unstable.
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Oct 11, 2012
Actually we have a 4402 controller with 1120 APs both of which are marked as EoL products, we want to jump over the new 2600 APs and 5508 Controller for increase signal coverage but we have the following deals:Last firmware for 4402 controller is 7.0.Firmware needed for 5508 to support 2600 APs is 7.3.Is it possible to configure mobility between 4402 and 5508 even with different firmware branch?
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Nov 27, 2011
I have two 5508, no anchor, only one SSID with internal web authentication using radius server.Under "Configuring Mobility Groups", Cisco guide says: "If a client roams in web authentication state, the client is considered as a new client on another controller instead of considering it as a mobile client".
I understand that if a client that has already autheticated via web roams between two LAPs that are associated with different WLCs, it has to reathenticate.
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Dec 5, 2011
I'm looking to deploy a 2504 controller and some AP1142s but would like to provide the client with an alternative, lower initial-cost option in my proposal. I've been researching the AP541N access points but several areas of their implementation seem unclear to me.
Clustering: For the clustering feature is it necessary for the network to have other SBCS components (500 series platforms)? All of their other features are either unapplicable to or already implemented in the network in question; if I have to add another appliance I would rather go the LWAPP route and use a true WLC.
What are the cababilities of clustering? Can I implement some form of wireless resilience by spacing APs closer together than necessary and they will lower transmit dBm and intelligently respond to attempt to cover a new cell where an AP has gone down?
What about roaming? I believe Cisco advertises this as part of a small business voice solution. A client roaming between two access points in the same mobility group (cluster?) on a wireless voip phone should be able to keep connection, as it's analogus to some critical UDP communications that are going to take place on the clients.
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May 22, 2012
I am running a WiFi network built on Cisco 1262 APs and Cisco WLC 5508. My APs broadcast two SSIDs, let call them "WiFi_Pay" and "WiFi_Free". I have a problem: when users migrate from "WiFi_Pay" to "WiFi_Free" (not moving, connecting to the same AP), the connection fails. If they try for second time, it is always successful. My task is to ensure that such migrations run smoothly and be successful from the first attempt.
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Apr 21, 2012
I have 5 access points (WAP4410N) all connected to a befsr41 8 port/switch router, each AP has it's own SSID. Is it possible to to have one SSID for the entire wireless network so users do not have to change SSID's every time they change locations?
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Sep 20, 2012
my hardware set-up : 2x AP 1100 series, 2x AP1131AG (not connected to a Cisco Switch)...all with the latest Cisco iOS
What i want to do is connect these APs and broadcast the same SSID (e.g Aironet and NOT Aironet1,Aironet2..etc). Doing that, a user with a laptop can roam between these APs and won't have to re-enter the password of the SSID every time he changes AP. I would also like the encryption to be with a 128bit password key. From what i have read, i need a local authenticator to do what (Something called Local Radius Server).
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Aug 2, 2012
I have three Autonomous AP´s in a small office running voice applications, all of them are connected to the same infrastructure switch and they have same configuration, voice Vlan is configure to open authentication. I have two models of AP 1252 and 1262 and I paste Radio configuration below.
First issue: During calls users are facing problems when roaming between AP´s, and eventually calls are dropped.
Second issue: Sometimes one of these AP´s(1252) lose all transmit signal and when return I got authentication error on log.
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Nov 16, 2012
Setting up a multi floor WLAN using a 6500 WISM Controller. Each floor has an AP group with the floor WAPs assigned. Each floor has a VLAN and the WLC has an interface configured. Each floor has a WLAN configured with the same SSID and the only change is the interface on the WLAN per floor.DHCP is remote on AD servers and each floor as a scope configured.Each floor works fine - we can get connected and get assigned to correct IP address. The issue we had with this setup was moving between floors. When we move up a floor the client loses connection to the inital floor (coverage - as expected). if we disconnect and reconnect it connects to the new floor SSID and gets an IP from DHCP.When looking into this - I then created an interface group and added all the floor interfaces into the group. I then applied the interface group to each floor WLAN and did soem testing - it worked as expected. I could now move between floors.The issue with this is though. When I was testing I already had an IP address assigned from DHCP - before I changed to interface groups. The issue is that the intial DHCP assignment no longer works and we cant connect to the WLAN anymore,
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May 29, 2013
I'm about to purchase 2 Aironet APs, either 1140 or 1160 Series for a small Business. I know too little about the AP installation. How to let both APs works in Roaming Mode so that users can move freely within the site without having to drop and connect from one AP to the other.
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Jun 3, 2013
Since two months they work full time with the new Dutch Electronic Patient Dossier.We installed 3 Cisco 5508 controllers, version 7.0.230.0 last year on a HP-switched network on a layer 2 mobility domain.Cisco 1041 AP are
The personnel works woth thin clients url... The one with the double antenna.This client has a Broadcom BCM943228HM4L 802.11 a.b.g.n (2x2) adapter.
On the client they have a connected RDP session to a server with the documents.Now they are walking from one patient to another patient. The problem they experience is a very late roaming. At the beginning of the corridor, the client will associate, but is going to roam at the end of the corridor. We installed 4 AP's on each corridor, so they signal is very well, maybe to well?
I disabled client loadbalancing and band select.The lowest data rates are also disabled. Mandatory begins at 12 Mbps. I can increase this to 18 Mbps.These clients work with PSK, with both methods (WPA-TKIP and WPA2-AES) enabled.We did this because of many old and new clients.
The customer tried to find out the problem with a smartphone, same issue. Very late roaming.I can upgrade the WLC to 7.0.240.0. The only problem I have is the WCS. When upgrading to 7.2 and higher I need to have NCS.
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Feb 23, 2012
We have standart wireless deployment with 24 APs (1240G model) and wireless controller 4402-25 placed on same site.Most of clients (WMS RF terminals ) works with one WLAN (WPA2-PSK) and constantly roam over warehouse , and that works great.
But for better survivability(when controller dies) we are trying to configure HREAP on our APs with local swicthed local auth WLAN. And that also work , but client roaming occur much more slowly and RDP connection to WMS APP server sometimes stuck for 2-5 sec.Disabling "local switching" checkbox for WLAN make roaming almost momental.
And slow roaming are price for controllerless HREAP design ? And for fast roaming and survivability we must use N+1 wlc?
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Oct 20, 2012
I have a customer with a RV180w running the latest firmware. We are currently using the router as a router and to provide wireless access. We want to add wireless coverage and I am interested in our options. We have a ethernet backbone which we could use to give the new AP LAN connectivity. Can we buy another RV180W and use it in AP mode and provide roaming wireless connectivty. The client wants a guest and business WLAN so we will use the VLAN feature of the router. How do we configure the new AP? Do we need to use WDS? If we use WDS, can we still use WPA2?
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Jun 25, 2012
recently we have deployed a Two APs in branch office warehouse and I have one wifi phone 7925 used over there. the problem is every time when phone roaming from one AP to another, 2 or 3 packets dropped, following is result of the 'debug client ':
--More or (q)uit current module or <ctrl-z> to abort*apfMsConnTask_7: Jun 27 09:52:25.496: 88:43:e1:4f:ab:39 Association received from mobile on AP a0:cf:5b:c3:a8:90*apfMsConnTask_7: Jun 27 09:52:25.497: 88:43:e1:4f:ab:39 10.107.38.121 RUN (20) Changing ACL 'none' (ACL ID 255) ===> 'none' (ACL ID 255) --- (caller apf_policy.c:1621)*apfMsConnTask_7: Jun 27 09:52:25.497: 88:43:e1:4f:ab:39 Applying site-specific IPv6 override for station 88:43:e1:4f:ab:39 - vapId 14, site 'AKL-AP-GP', interface 'management'*apfMsConnTask_7: Jun 27 09:52:25.497: 88:43:e1:4f:ab:39 Applying IPv6 Interface Policy for station 88:43:e1:4f:ab:39 - vlan 38, interface id 0, interface 'management'*apfMsConnTask_7: Jun 27 09:52:25.497: 88:43:e1:4f:ab:39
[code]....
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May 1, 2012
how to create WiFi network with uninteruptable roaming between Access Points while clients are moving.What hardware is the best here? Are there any manuals about that?
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Sep 27, 2011
Just checking in to ask about setting up a network with multiple WAPs. Right now, I have it set up with two WAPs, and can roam seemlessly between the two. Same security, SSIDs, etc. I have one broadcasting on channel 1, and the other on channel 11.What I wanted to ask is this: in the future, I'd like to add two wireless access to a different network that exists in the same building. So I'd have two more WAPs, broadcasting a different network with a different SSID. I can assign one to channel 6, but the last WAP will not have a non-overlapping channel to use. Is that going to cause interference issues?
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Jul 7, 2011
How can i configure AP (WAP4410N) to Support Roaming?
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Mar 2, 2012
How can I allow AND prevent connection to wireless networks based on their BSSID(MAC Address), when their SSID(default/custom name) is the same and changing SSID is absolutely NOT an option? Physicaly moving closer to the Preferred Network Wireless Access Point is also absolutely NOT an option. i.e.
Allow connect/reconnect to:
SSID - Linksys
BSSID - AA-AA-AA-AA-AA-AA
and
Prevent connection to:
SSID - Linksys
[code]....
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Feb 28, 2012
Is it possible to set up a roaming wireless network with wireless access points that are different brands from one another (i.e., D-Link, Cisco, Belkin, etc.)? If so, is there anything special that needs to be configured?
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May 30, 2011
But my laptop often times changes access points as I move about in my office to try to optimize the signal strength, which causes the network to stop working and I had to do "ipconfig -renew" to continue using internet. Problem now is that the IT desk told me that the AP's are overloaded.
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