I do not know case where you can do this without CMTS. (Although it may still exist.)
I recommend you a real cheap/old pizzabox CMTS for test.
Like the Motorola BSR 1000 or 2000 CMTS.
Or like Com21 CMTS (Arris C3 older version with same Arris SW).
I have written a perl script which acts as a dhcp client of CM. Then it also downloads config file. I did it to check my DHCP/TFTP via nagios. There are two scripts as I have two different services but you can easly combine them into one.
Hi,
I do not know case where you can do this without CMTS. (Although it may still exist.)
I recommend you a real cheap/old pizzabox CMTS for test.
Like the Motorola BSR 1000 or 2000 CMTS.
Or like Com21 CMTS (Arris C3 older version with same Arris SW).
I have written a perl script which acts as a dhcp client of CM. Then it also downloads config file. I did it to check my DHCP/TFTP via nagios. There are two scripts as I have two different services but you can easly combine them into one.
https://github.com/bajojoba/check_docsis_dhcp_tftp
BR