Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.

SNMP RAP 5WN 2WG MAC to BSSID

  • 1.  SNMP RAP 5WN 2WG MAC to BSSID

    Posted Mar 20, 2013 02:49 AM

    Hello everyone,

     

    i'm trying to snmpwalk the controller to receive the IPs of our RAPs.  I know that i can use the OID .1.3.6.1.4.1.14823.2.2.1.1.3.3.1.5
    to  display all the IPs of the online RAPs.  But i don't know which RAP has the displayed IP.

    For example the output of the walk is : (IPs are changed)


    SNMPv2-SMI::enterprises.14823.2.2.1.1.3.3.1.5.0.36.108.166.92.176 = IpAddress: 10.141.50.169
    SNMPv2-SMI::enterprises.14823.2.2.1.1.3.3.1.5.0.36.108.166.101.144 = IpAddress: 10.141.50.175
    SNMPv2-SMI::enterprises.14823.2.2.1.1.3.3.1.5.0.36.108.166.105.96 = IpAddress: 10.141.50.173

    Let's take the first result.  The Identifier seems to be "0.36.108.166.92.176" . I've read that this has to be the MAC Adress in decimal code, am i right ?

    I can recalculate the MAC by changing these decimal code into hexademical ==>  MAC adress should be:

     

    00:24:6c:a6:5c:b0

     

    but there is no RAP with this specific MAC Adress. RAP with the IP 10.141.50.169 has the MAC 00:24:6c:c2:65:cb.

     

    Afterwards i found this article:

    https://arubanetworkskb.secure.force.com/pkb/articles/HowTo/R-386

     

    According to this article i have to do the following:

     

    00:24:6c:c2:65:cb

     

    get the last 20 bytes:

     

    2 65 cb

     

    shift them to left

     

    26 5c b0

     

    replace the last 24 bytes of the MAC Adress:

     

    00:24:6c:26:5c:b0

     

    Now in decimal code:

     

    0.36.108.38.92.176

     

    but according to the snmp output the BSSID is:

     

    0.36.108.166.92.176

     

     

    I'm a bit confused now....

    Did i missunderstood something or did i overread something ?

     

    Help is appreciated

     

    Best Regards

     

    Greenie