5508 Enable Option 82

[Ed Willson]

I've enabled option 82 on the WLC, but when I watch clients pull DHCP the 82 option isn't showing up in wireshark.

Any Thoughts?

Thanks,

   Skymeat

[Rasika Nayanajith]

Hi

This should help you to understand DHCP option 82 behavior (these are based on 7.0.116.0 code & refer config guides for exact command syntax if other version used)

http://mrncciew.com/2013/05/18/understanding-dhcp-option-82/

http://mrncciew.com/2013/06/08/wlc-dhcp-option-82-config-example/

HTH

Rasika

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[Ed Willson]

I did enable:

(Cisco Controller) >show dhcp opt-82

DHCP Opt-82 RID Format: <AP Ethernet MAC Address>
DHCP Opt-82 Format: ascii

But when a client requesta an address there is no 82 option there: