Use of DHCP option-12 in AIO

Employee
Employee

Use of DHCP option-12 in AIO

  • Instant ON APs can now set their inventory name as the hostname in the DHCP requests.
  • The configured inventory name is set as "hostname" under option-12 of the DHCP DISCOVER Packet.
  • This allows an administrator to better identify a device on the DHCP server.
  • The characters in the DHCP option is more limited than the device name in the UI (APP and the portal).
  • The maximum number of characters supported for the hostname is 32.
  • Colons and dashes are automatically converted to “dashes”(-).

 

  • Configured the device name as “AP:12:LAB” from the Mobile Application.

Untitled-1.png

  • From the Uplink capture, we can see that the colons are replaced with dashes and the AP name is referred to “AP-12-LAB”.apture-1.JPG
  • The hostname gets updated in the switch LLDP information.Capture-2.PNG

     

  • If there are more special characters mentioned in the AP’s hostname then the AP’s serial number is set as the hostname in the DHCP option-12.
  • Configured the device name as “&@&&)@” from the Mobile Application.Untitled.png

     

  • From the Uplink capture, we can see that the AP name is referred to  “CNHVJSSBCG”.
    Capture-3.JPG

     

  • The hostname gets updated in the switch LLDP information.Capture-4.PNG

     

 

Regards,
Andrew
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