The DHCP server enriches its DHCP packets with the DHCP option 43 (vendor specific option) to distribute this information to requesting clients on the network. This includes the domain name, which is required for the device to operate with the LANCOM Management Cloud (LMC). In this way, a LANCOM device is able to communicate directly with a private LMC installation without having to be configured first.
If you operate a LCOS as a DHCP server, you enter the necessary LMC URLs into the configuration in cleartext. The DHCP server in LCOS adds the URLs to the DHCP option 43 and delivers them in the response packets sent to requesting LCOS devices. To do this, the DHCP server evaluates DHCP option 60 (vendor class identifier) in the DHCP requests from the clients. A DHCP option 43 configured in this way takes precedence over a DHCP option 43 that was manually configured in the DHCP options table on the DHCP server.
