If I have a corporate network, no WWW Internet outside of it, only different subnets. Can a Cisco router or switch be configured to take information from one layer and embed it in another layer?
For example, the MAC address is a t lower layer. Could one of the routers be configured to put that MAC information in a higher layer, so a web server could read it? I don't mean not keeping the MAC where it is so the network will work, only the additional information in one of the layers that a server can read (http).