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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Aruba AP 135 not getting ip address

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  • 1.  Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 09:48 AM
      |   view attached

    I have aruba 135 with two SSID's. One is an Employee and the other one is Guest. I can connted to both of them but no internet access. I can only get to the Aruba GUI. Employee SSID gets ip address from the network assigned ( cisco switch), and the Guest SSID is Virtual Controlled Assigned. On the Employee SSID I get some 169.254.x.x ip address, when I should be getting 10.10.x.x ip address, and on the Guest SSID I am getting 192.168.x.x ip address which should be fine. On the Employee SSID I am also getting an alert "DHCP request timed out". Any advice on how to get this fixed. See attachment (Employee SSID).


    #AP135


  • 2.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 10:12 AM

    Did you configured the ip helper on the Switch???

    If you are configuring for example

    In your switch core you have like 5 Interface vlan,  your AP is on vlan 10 but the dhcp server is on vlan 15 you need to configure the ip helper on the switch, i mean that if you are trunking the vlan from the IAP to the swtich.

     

    If you are plugging the IAP to a L2 switch you need to make sure that the VLAN which the IAP is can reach the swtich core which got the interface vlans, on the switch core configure the ip helper pointing to the dhcp server.

     

    hope that helps

    Cheers

    Carlos



  • 3.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 10:19 AM

     

    What OS do you have installed ?

     

    What are you using as your DHCP server ? if it is the switch ?

     

    Can the IAP get an IP on the VLAN you are using for the Employee SSID ?

     

     



  • 4.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 10:50 AM

    The cisco switch which the IAP is connected to is a DHCP server. If I would have had the DHCP server other then the switch itself then I would had to configure the IP helper.

     

    OS version is 6.1.3.4-3.1.0.2_36584



  • 5.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 10:53 AM

     

    Have you tried assigning that same VLAN to the one of the ports on the switch and connecting your laptop to make sure you can get an IP address on wired ?

     

    Do a show ip dhcp binding on the switch

     

    What is that VLAN getting trunk back to the IAP ?



  • 6.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:08 PM

    I am getting an ip address and the DHCP is working fine when I plug in my laptop in one of the ports.



  • 7.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:09 PM

     

    Is that same VLAN trunked back to the IAP ?



  • 8.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:10 PM

    Yes it is.



  • 9.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:11 PM

     

     

    What's the native VLAN  on that trunk ?



  • 10.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:12 PM

     

    Also did you define that particular VLAN under the SSID setup ?

     

    You should consider also upgrading to 6.2.x.x



  • 11.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:29 PM

    Default VLAN is VLAN1 and I have defined the right VLNAN under the SSID.



  • 12.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:31 PM

     

    Is that same VLAN you have configure on the switch to support the IP DHCP POOL ?

     

    Do you have a SVI created for that VLAN on the switch ?



  • 13.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 12:49 PM

    I have the same vlan for the DHCP pool and there is no SVI on the switch.



  • 14.  RE: Aruba AP 135 not getting ip address
    Best Answer

    Posted Jul 15, 2013 01:00 PM

     

    What you need to do is create an SVI and I assigned it the default router address you set on the pool :

     

    EMPLOYEE-DHCP-POOL
    subnet 10.10.10.0 netmask 255.255.255.0 
    default router 10.10.10.1

    interface VLAN 1

    ip address 10.10.10.1 255.255.255.0

     

    interface fa 0/0 >>>>>>Connection to IAP

    swichport trunk native vlan 1

     



  • 15.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 01:17 PM

    Thanks a lot problem solved. I can get to the internet and the DHCP is working fine.



  • 16.  RE: Aruba AP 135 not getting ip address

    Posted Jul 15, 2013 01:18 PM

    Glad it works ...