HA in Cisco WLC

Hi friends,
I am planning to have a wireless environment for a corporate company. I would like to have a Cisco wireless LAN controller 2100 series and 15 numbers of cisco aironet 1142 n access point. Since wireless is gonna be a very important medium for the premises, I am planning to have high availability for the 2100 series WLC.
With this scenario I am having the following of queries?
1. Does high availability is supported with WLC 2100 series or need to go for an hihger end WLC's? It would be great if I am guided with some documents on this?
2. My wired switching infrastructure at the core is running with GLBP. Can I connect the both WLC in each switch in an dual home architecture?
3. Is there any pre-requistes for doing the high availability for the WLc's?
4. Yet another company that is close to me do have the same architecture for wireless infrastructure, except that they have cisco WLC as 5508 and Cisco aironet 1142n access point. All the end points NIC adapters that they have support a/b/g standard. But with an n series they continously report low signal strength, the reason for this still unknown?
     But the tech documents of 'n' series access point claims that they support, 300Mbps within 33 feet and 200 Mbps within 66 feet.
They are having 2 nos of Cisco 1142n access point for every 30 feet but still they are facing low signal strength. Also there workspace are all cubicles and without any interference.
It would be great if I am guided on this issue also?
Regards,
Karthik Anbumani

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Hi Karthik,
You can build this HA solution based on the 2100 controllers. And if you want HA for 15 access points you need two 2125 controllers. But I will suggest that you consider the 5508 controller since that is a more future proof hardware and will give you more features that you might want to use such as Office Extend.
Right now there is a bundle available for one 5508 with 10 x AIR-LAP1142 and the GPL price for that bundle is USD 31,424. And you should consider if you need the HA solution or if you are covered by the onsite support. In the product list below I have used the regulatory domain E and power cable for Europe. Make sure that you get this correct for your country. This is a limited offer ending August 1st 2010. You also need the additional 5 access points or more if you want Office Extend.
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Also consider that the 2100 series only have FastEthernet interfaces so you will not be able to utilize the full 11n throughput.
1 x 5508 with 10 x 1142:
Product
Description
Quantity
Price
Lead Time
AIR-CT25-1140E10
802.11a/g/n ESTI Cfg5508-25 10AP WCS Demo Promo ends 8/1/10
1
24,595.00
14 Days
AIR-CT5508-25-K9Z
5508 Series Controller for up to 25 APs
1
0.00
14 Days
AIR-PWR-5500-AC
Cisco 5500 Series Wireless Controller Redundant Power Supply
1
1,495.00
14 Days
SWC5500K9-70
Cisco Unified Wireless Controller SW Release 7.0
1
0.00
14 Days
AIR-PWR-CORD-CE
AIR Line Cord Central Europe
1
0.00
14 Days
AIR-LAP1142N-E-K9Z
Manufacturing Level PID - AIR-LAP1142N-E-K9
10
0.00
14 Days
S114RK9W-12421JA
Cisco 1140 Series IOS WIRELESS LAN LWAPP RECOVERY
10
0.00
LIC-CT5508-25
25 AP Base license
1
0.00
14 Days
LIC-CT5508-BASE
Base Software License
1
0.00
14 Days
WCS-CD-K9Z
CD With Windows And Linux. No License.
1
0.00
14 Days
CON-OSP-CT25E10
ONSITE 24X7X4 802.11a/g/n ESTI Cfg: 5508-25; 10APs;
1
0.00
CON-OSP-CT0825
ONSITE 24X7X4 Cisco 5508 Series
1
2,944.00
CON-OSP-1142EK9Z
ONSITE 24X7X4 802.11a/g/n Fixed AP
10
2,390.00
Total   LeadTime: 14 Days  Total Price: USD   31,424.00
Total LeadTime: 14 Days  Total Price: USD 31,424.00
2 x 2125 with 10 x 1142:
Product
Description
Quantity
Price
Lead Time
AIR-WLC2125-K9
2100 Series WLAN Controller for up to 25 Lightweight APs
1
8,995.00
21-35 Days
CAB-AC-C5-EUR
AC Power Cord, Type C5, Europe
1
0.00
14 Days
SWLC2100K9-70
Cisco Unified Wireless Controller SW Release 7.0
1
0.00
14 Days
ASA5505-PWR-AC
ASA 5505 AC Power Supply Adapter
1
0.00
14 Days
SSC-BLANK
ASA 5505 SSC Blank Slot Cover
1
0.00
14 Days
CON-OSP-AC2125K9
ONSITE 24X7X4 WLAN Controller for for Retail
1
1,656.00
Total   LeadTime: 21 - 35 Days   Total Price:   USD 10,651.00
Product
Description
Quantity
Price
Lead Time
AIR-WLC2125-K9
2100 Series WLAN Controller for up to 25 Lightweight APs
1
8,995.00
21-35 Days
CAB-AC-C5-EUR
AC Power Cord, Type C5, Europe
1
0.00
14 Days
SWLC2100K9-70
Cisco Unified Wireless Controller SW Release 7.0
1
0.00
14 Days
ASA5505-PWR-AC
ASA 5505 AC Power Supply Adapter
1
0.00
14 Days
SSC-BLANK
ASA 5505 SSC Blank Slot Cover
1
0.00
14 Days
CON-OSP-AC2125K9
ONSITE 24X7X4 WLAN Controller for for Retail
1
1,656.00
Total   LeadTime: 21 - 35 Days   Total Price:   USD 10,651.00
Product
Description
Quantity
Price
Lead Time
AIR-LAP1142-EK9-PR
LAP1142 Controller Based E Reg Domain
1
9,950.00
14 Days
S114RK9W-12421JA
Cisco 1140 Series IOS WIRELESS LAN LWAPP RECOVERY
1
0.00
AIR-LAP1142-EBULK
BOM LEVEL PID FOR BULK PACK
10
0.00
14 Days
CON-OSP-LAP1142E
ONSITE 24X7X4 802.11a/g/n Fixed Unified AP; ETSI
10
2,390.00
CON-OSP-L1142E0P
ONSITE 24X7X4 802.11a/g/n LWAPP AP EU Cnfg-Promo Pk
1
0.00
Total   LeadTime: 14 Days  Total Price: USD   12,340.00
Total LeadTime: 21 - 35 Days   Total Price: USD 33,542.00
Regards,
André

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  • Understanding statistics from a Cisco WLC?

    Hello,
    From the "Monitor" page on our Cisco WLC.  If you go to "Access Points" from the left side then choose one of the Radios like 802.11b/g/n.  That will list all the APs connected with your controller.
    1) First question, some of the APs listed show the "Interference Profile" as "Failed".  What does this mean?  It has connected clients and no one is reporting an issue.  So what does that really mean?
    2) Second question, if you go to the "Details" for one of the APs I can see the "802.11 MAC Counters" showing things like Tx Fragments, Tx Failed Count, FCS Error Count, etc.  Below is what I see.
    Can someone explain what these statistics are saying?  Again there are no issues reported by our users, but some of these values seem high and I don't understand what they are saying or if there is anything I should be considered with.
    Any help on this would be great!
    Thank you!
    -rya

    For your convenience:
    The details of the " 802.11 MAC Counters " :
    Counters
    Tx Fragment Count
    This counter is incremented for an acknowledged MPDU with an individual address in the address 1 field.
    Tx Failed Count
    This counter increments when an MSDU is successfully transmitted after one or more retransmissions.
    Multiple Retry Count (Graphics view only)
    This counter shall increment when an MSDU is successfully transmitted after more than one retransmission.
    RTS Success Count
    This counter increments when a CTS is received in response to an RTS.
    ACK Failure Count
    This counter increments when an ACK is not received when expected.
    Multicast Rx Frame Count
    This counter increments when a MSDU is received with the multicast bit set in the destination MAC address.
    Tx Frame Count
    This counter increments for each successfully transmitted MSDU.
    Multicast Tx Frame Count
    This  counter increments only when the multicast bit is set in the  destination MAC address of a successfully transmitted MSDU. When  operating as a STA in an ESS, where these frames are directed to the  access point, this implies having received an acknowledgment to all  associated MPDUs.
    Retry Count
    This counter increments when an MSDU is successfully transmitted after one or more retransmissions.
    Frame Duplicate Count
    This counter increments when a frame is received that the Sequence Control field indicates is a duplicate.
    RTS Failure Count
    This counter increments when a CTS is not received in response to an RTS.
    Rx Fragment Count
    This counter shall be incremented for each successfully received MPDU of type Data or Management.
    FCS Error Count
    This counter increments when an FCS error is detected in a received MPDU.
    WEP Undecryptable Count
    This  counter increments when a frame is received with the WEP subfield of  the Frame Control field set to one and the WEPOn value for the key  mapped to the TA's MAC address indicates that the frame should not have  been encrypted or that frame is discarded due to the receiving STA not  implementing the privacy option.
    Band Select statistics
    When  the feature is activated, the WLC doesn't immediately reply to probe  requests on 11b/g. If immediately a probe is also seen on 11a, then the  client is detected as dual band. Then WLC only replies on 11a. After  some time, this "categorization" expires and WLC will again try to see  if the client is present on both bands.

  • Cisco WLC 5508 in HA mode error

    Hai ,
    I am Getting the below Error in Cisco WLC 5508, Version 7.4.100.0 in HAmode. The WLC contains Access Points having in local and Flex Connect Mode.
    RF failure notification ErrorType: 32 Reason :Error: Config Sync failed on Standby for the usmdb:HA_send_usmDbApfMsDelete,
    I sam a same bug in Cisco WLC 7.4.100.0 release notes similar to the error like
    RF failure notification ErrorType: 32 Reason :Error: Config Sync failed on Standby for the usmdb:HA_send_usmDbSpamSetRadSlotAntennaType.
    Any Ideas?

    HI Mohamed,
    its a open Caveats  in 7.4.100.0
    CSCud26632
    Symptom: The following SNMP trap appears on the controller when you change the channel width number to 40-MHz:
    RF failure notification ErrorType: 32 Reason :Error: Config Sync failed on Standby for the usmdb:HA_send_usmDbSpamSetRadSlotAntennaType.
    Conditions: Controller is in an HA pair. Join the 802.11n access point to the controller and change the channel width to 40-MHz and channel number to 157.
    Workaround: None
    http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn74.html
    Reagrds
    Please rate helpful posts

  • Backing up config on Cisco WLC 2504

    I need to upgrade the software on my controller but first need to take a backup of the config.
    I log into the GUI of the controller and then go to Commands / Upload File, I then select my options:
    File Type: Configuration
    Transfer Mode: TFTP
    IP: 10.x.x.x
    File Path: C:\Cisco\WLC
    File Name: ciscowlc.cfg
    Click Upload
    After about a minute it receive the following error:
    % Error: Config file transfer failed - Error from server: The specified operation is not supported.
    I can't seem to find any information on this error.
    Any help would be greatly appreciated.
    Thanks,
    James

    What TFTP server are you using... I use 3CDeamon and I also select the folder from the TFTP server so my path would just be ./
    Make sure that the firewall on the tftp server is disabled and also make sure your doing the tftp to a wired machine and not a wireless machine.  TFTP and FTP is not allowed when your associated to an AP that is joined to that WLC.
    Thanks,
    Scott
    Help out other by using the rating system and marking answered questions as "Answered"

  • Hellp on Nokia E61i associating with Cisco WLC 4402

    I met some problem with associate Nokia's dual mode mobile phone E61i with Cisco WLC 4402, hope someone can help me on it:
    I setup a VOICE WLAN in 4402(v5.0.148), Layer2 security is WPA1+WPA2, Key management using 802.1x, WPA1 policy enable both TKIP and AES, Radius server using ACS engine(v4.1.1.23)(enable PEAP-MSCHAPv2);
    I can use my laptop to join this WLAN(my laptop configure with PEAP/MSCHAPv2, WPA-TKIP, not validate server certificate), but can't let E61i join it, each time it will remind me “unable to connect, WPA authenticate failed).
    In E61i, I select WPA/WPA2 as WLAN security mode, enable EAP-PEAP, under EAP-PEAP, I enable EAP-MSCHAPv2; however under Cipher, there's a lot of options such as “RSA,3EDS,SHA”, “RSA,AES,SHA”, but there's no TKIP, I have tried to enable all of them and tried only enable those items which include AES, but I failed each time with the same reminder “unable to connect, WPA authenticate failed”. I checked ACS's failed log, there's no record; In 4402, there also have no record.
    If I change the security to open or static WEP for VOICE WLAN, then the E61i can connect to the WLAN.
    I think the problem maybe relate to encryption or certificate, right now I just do the test in lab, not in customer's real environment, so I use ACS to generate a self signed certificate and installed it in ACS.
    Pls. help to point me what I need to adjust to make it work. Thanks!

    Hello,
    CCKM Key Management mode on Nokia E61i phone can be used
    against Cisco LWAPP AP's with TKIP encryption
    Nokia E61i (and other E-series WLAN enabled phones) are supporting CCKM key management method with both dynamic WEP and TKIP ciphers.
    On the phone configuration, 802.1X security mode needs to be in use in order to enable CCKM support. WPA/WPA2 security mode on the phone is dedicated to standards based WPA and WPA2 methods and it does not allow usage of proprietary CCKM key management method.
    Phone's 802.1X security mode does not mean that phone would only support dynamic WEP encryption method in this mode although in contexts term "802.1X" may be attached to pure dynamic WEP (legacy / pre WPA era)security methods.
     802.1X security mode can be seen on Nokia Eseries phones as sort of an "everything with EAP based authentication is allowed" mode, meaning that following key management and cipher configurations are supported:
    - WPA-Enterprise  = WPA Key Management (EAP based authentication) with TKIP encryption
    - WPA2-Enterprise = WPA2 Key Management (EAP based authentication) with AES encryption
    - Mixed WPA/WPA2-Enterprise = I.e. WPA/WPA2 Mode Migration WPA2 Key Management (EAP based authentication) with AES (for unicast data) and TKIP (for multicast data) ciphers
    - 802.1X dynamic WEP = legacy (pre-WPA era) 802.1X based dynamic WEP (EAP based authentication with dynamic WEP encryption)
    Supported:
    - CCKM with WEP = CCKM Key Management (EAP based authentication) with dynamic WEP encryption
    - CCKM with TKIP = CCKM Key Management (EAP based authentication) with TKIP encryption
    Not supported:
    - CCKM with AES = CCKM Key Management (EAP based authentication) with AES encryption
    Please note that CCKM-AES mode (CCKM Key Management with AES cipher) is not working properly due to some incompatibilities between Cisco and Nokia implementations thus it must not be listed as a supported combination on the current Nokia E-series devices. We are also seeing CCKM-Fast
    Re-authentication failures with Cisco autonomous AP's when AES encryption is used although initial authentication to autonomous AP's is successful. Nokia is currently working with Cisco to get CCKM-AES based authentications and roaming working properly with both LWAPP and autonomous Cisco AP's.
     Also note that Nokia E-Series does not support Cisco proprietary CKIP/CMIC encryption/data integrity methods. CKIP/CMIC is supported at least by Cisco autonomous AP's and it seems to be available also
    at least on LWAPP AP version 4.1.171.0.
     CCKM on E-Series devices has been tested against Cisco LWAPP (ver. 4.1.171.0) and it works when TKIP encryption is in use (WPA Policy + TKIP encryption in Cisco LWAPP configuration terms).
    In practice this means Cisco LWAPP is configured in a following manner: WLAN -> Edit -> Security-> 
    Layer 2 Security = WPA+WPA2
    WPA+WPA2 Parameters:
    -WPA Policy = enabled
    -WPA Encryption = TKIP enabled, AES disabled
    -WPA2 policy = disabled
    -Auth.Key Mgmt = CCKM
    Br,
    -Pasi-

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