Let’s see how this work.
Suppose we are using Linux DHCP server to perform this task. And suppose that our acs url is
This is the output of the “od” command which actually is an hex dumper.
So we have the ascii characters and the relative hex dump.
Our string should look like this:
Now we have to put in front of the above string two more bytes: the first is “01″ meaning that we are passing acs url, the second is “1E”, actually the length of the string representing acs url.
So the final string we’ll be:
Reboot CPE and wait for it to ask an IP address to the DHCP server. This is supposed to reply with option 43 (acs url) and CPE’s CWMP agent should contact our ACS server at the specified url.