Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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iMAC (Apple) don't receive IP from Controller's internal DHCP server

  • 1.  iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Jan 30, 2015 02:54 AM

    Hello, colleagues!

     

    620 controller with internal DHCP server.

    4 x AP-105

    Simple configuration (through Wizard), 1 VLAN, 1 SSID, WPA2

     

    All clients work normally, but 1 stationary iMAC can't receive IP address from controller.

    In Controller I can see MAC-address of iMAC, all parameters fine.

    iPhones normally work.

     

    Can you give me some advices, or what I have to do?

     

    Thank you!

     



  • 2.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Jan 30, 2015 10:51 AM

    Does it get a *169 address?

     

    Do this:

     

    config t
    logging level debug user-debug <mac address of that mac>
    
    
    <connect the mac>
    
    show log user-debug 50
    

     That will tell you what VLAN that device ends up in.  If it ends up in the right VLAN, we need to look at the client to see why it is not getting an ip address...

     



  • 3.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 03:33 AM

    Hello!

     

    Client getting 169 ipaddress.

     

    If client go to right vlan:

    How we can to look at the client to see why it is not getting an ip address...???

     

    Thank you!



  • 4.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 04:42 AM

    In cli run  #show log network  

     

    In GUI, open  monitoring> debug> process log>

    In top right corner one search button is there, click on that and select he DHCP log.

     

    dhcp.jpg



  • 5.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 06:51 AM
      |   view attached

    Client take IP-address for a little time and then drop it. And iit in cyclic.

     

    I have debug logs - in attach.

     

    any ideas?

    Attachment(s)

    docx
    Debug-iMAC-client.docx   20 K 1 version


  • 6.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 07:02 AM

    We need to see the contents of the SSID profile  that the iMac is trying to connect to.  The logs are saying that the client is disconnecting, because it does not like something.

     

    show wlan ssid-profile <name of ssid profile>

     



  • 7.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 07:27 AM

    Here is.

     

    #show wlan ssid-profile media-ssid_prof

    SSID Profile "media-ssid_prof"
    ------------------------------
    Parameter Value
    --------- -----
    SSID enable Enabled
    ESSID media
    Encryption wpa2-psk-aes wpa2-psk-tkip
    Enable Management Frame Protection Disabled
    Require Management Frame Protection Disabled
    DTIM Interval 1 beacon periods
    802.11a Basic Rates 6 12 24
    802.11a Transmit Rates 6 9 12 18 24 36 48 54
    802.11g Basic Rates 1 2 12
    802.11g Transmit Rates 1 2 5 6 9 12 18 24 36 48 54
    Station Ageout Time 1000 sec
    Max Transmit Attempts 8
    RTS Threshold 2333 bytes
    Short Preamble Enabled
    Max Associations 64
    Wireless Multimedia (WMM) Disabled
    Wireless Multimedia U-APSD (WMM-UAPSD) Powersave Enabled
    WMM TSPEC Min Inactivity Interval 0 msec
    Override DSCP mappings for WMM clients Disabled
    DSCP mapping for WMM voice AC N/A
    DSCP mapping for WMM video AC N/A
    DSCP mapping for WMM best-effort AC N/A
    DSCP mapping for WMM background AC N/A
    Multiple Tx Replay Counters Disabled
    Hide SSID Disabled
    Deny_Broadcast Probes Disabled
    Local Probe Request Threshold (dB) 0
    WEP Key 1 N/A
    WEP Key 2 N/A
    WEP Key 3 N/A
    WEP Key 4 N/A
    WEP Transmit Key Index 1
    WPA Hexkey N/A
    WPA Passphrase ********
    Maximum Transmit Failures 0
    BC/MC Rate Optimization Disabled
    Rate Optimization for delivering EAPOL frames Enabled
    Strict Spectralink Voice Protocol (SVP) Disabled
    High-throughput SSID Profile media-htssid_prof
    802.11g Beacon Rate default
    802.11a Beacon Rate default
    Video Multicast Rate Optimization default
    Advertise QBSS Load IE Disabled
    Advertise Location Info Disabled
    Advertise AP Name Disabled
    802.11r Profile N/A
    Enforce user vlan for open stations Disabled
    Enable OKC Enabled



  • 8.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 07:54 AM

    The only things that I can see are:

     

    Opportunistic Key Caching (Enable OKC) - MACs did not support this back in the day.  I would try disabling it.

     

    802.11g- basic rate of 12 - the default is normally 1,2 and Not 12 - Not sure it would have any effect, but try removing 12.

     

    Multiple Encryption of WPA2-PSK-AES and WPA2-PSK-TKIP - I would type "show dot1x supplicant-info list-all" to see what clients are using AES and what clients are using TKIP.  If they are all using AES, I would drop TKIP support and see if your imac connects.

     

     



  • 9.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 08:00 AM

    Opportunistic Key Caching (Enable OKC) - MACs did not support this back in the day.  I would try disabling it.

     

    I was trying to disable OKC - don't help

     

    Multiple Encryption of WPA2-PSK-AES and WPA2-PSK-TKIP

     

    Was trying AES or TKIP - don't help.

     

    iMAC client connect to SSID receive IP-address, after some little time take own IP-address 169.254.x.x, then take right IP-address, than take 196.254.x.x and cyclic.

     

    Any more ideas?

     

    Thank you!



  • 10.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 03, 2015 08:09 AM

    You might want to open a case with Apple.  I dont know the version of MACOS on that device and there could be something specific that is wrong.

     

    On the imac side, you could enable debugging:

     

    sudo /usr/libexec/airportd debug +alluserland +alldriver +allvendor

     It will ask for the root password.  After you enter it, it should start debugging, and you should be able to see the output in the Console application on the mac while it is trying to connect to see what the issue is.  Again, no matter what message you see there, it is possible only apple can help you.



  • 11.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 04, 2015 09:41 AM

    I can't hardly test this iMAC.

     

    Any more ideas or steps to diagnosing the problem?

     

    Thank you!



  • 12.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 04, 2015 09:55 AM
    Could it be a hardware issue?


  • 13.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 04, 2015 10:03 AM

    This iMAC normally connect to SSID from simple TP-Link wi-fi router (wpa2).

     

    Thank you!



  • 14.  RE: iMAC (Apple) don't receive IP from Controller's internal DHCP server

    Posted Feb 04, 2015 10:05 AM
    Please open a TAC case, so they can gather all of your information. Cthere could be something that we cannot see.