Could someone please explain to me how Option 82 works? I see you can enable it on the Access Point, but I don't see anywhere on the SM for Option 82.
When Option 82 is enabled on the AP, ePMP inserts “remote-id” (option ID 0×2) to be the SM’s MAC address and the “circuit-id” (ID 0×01) to be the AP’s MAC address. Those two fields are used to identify the remote device and connection from which the DHCP request was received.
For example, I have attached a Wireshark capture and if you analyze the bootp packets, you will find the below.
Please let me know if this helps.
Will this still work if you run your customer traffic inside of a VLAN?
Yes, it will work with the VLANs.
is it possible to exempt some vlans or entire subscriber radios from option82?