hi
However, how to direct or tell the authenticated Radius client/station go to get the IP address from the DHCP server, in other words, is in the RADIUS server where to indicate the DHCP server IP address (or point to my DSL router 192.168.1.1).
no. radius is used till to the point when the authenticating station gets access to the network. if it helps, you can compare it to a (somehow controlled) plugging into the network plug: from the point you plug a station in, it is up to the station to send DHCPDISCOVER messages and to interpret the offers from the servers. in the case of 802.1X and radius, the station does exactly the same as it would do if you just plugged it in.
now, if you wanted to make a logical link between the authenticated station/user and the assigned IP address, you would have to go farther (e.g. execute a script every time a new station connects which reconfigures your DHCP server to assign a chosen IP address to the seen MAC address etc.)
ciao artur
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