Q: How to check the wireless network name or SSID information when using option 82 in IAP?
A:
Option 82 was designed to allow a DHCP Relay Agent to insert circuit specific information into a request that is being forwarded to a DHCP server. Specifically the option works by setting the sub-options Circuit ID in DHCP packets.
In a wireless network, this would likely be a SSID name. Here "STSTEM BOLAGET" is used as SSID name which is highlighted in the pcap.
DHCP Configuration :
ip dhcp test
server-type Centralized,L2
server-vlan 20
option82 alu