In this case may be the modem is not registered properly and that is the reason there is no internet form SB8200 so to isolate the issue please connect SB 8200 to the power and coax line then check the modem IP address on direct connection by connecting device like computer or laptop to the unit and that will help us in finding the issue.

8200 IP Gateway address is 192.168.100.1, Subnet Mask is 255.255.255.0

The original 6190 IP Gateway address is 74.197.8.1, Subnet Mask is 255.255.252.0

The following is log from the 8200:

03/11/2024 15:24:53    
critical    
Config File Rejected due to Invalid or Unexpected TLV 11;CM-MAC= {edit :Personal information};CMTS-MAC={edit :Personal information}-QOS=1.1;CM-VER=3.1;
03/11/2024 15:24:53    
critical    
TLV-11 - Illegal Set operation failed;CM-MAC={edit :Personal information};CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;
03/11/2024 15:24:48    
error    
Primary lease failed, IPv4 fallback initiated;CM-MAC={edit :Personal information};CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;
03/11/2024 15:24:48    
critical    
DHCP failed - RS sent, no RA received;CM-MAC={edit :Personal information};CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;
03/11/2024 15:24:16    
critical    
No Ranging Response received - T3 time-out;CM-MAC={edit :Personal information}CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;
03/11/2024 15:23:57    
critical    
TFTP Request Retries exceeded, CM unable to register
03/11/2024 15:23:57    
critical    
TFTP failed - Request sent - No Response;CM-MAC={edit :Personal information};CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;
03/11/2024 15:22:52    
notice    
GUI Login Status - Login Sucess from LAN interface; client ip=u192.168.100.20];CM-MAC={edit :Personal information};CMTS-MAC={edit :Personal information};CM-QOS=1.1;CM-VER=3.1;