USR UDP Message
Message type (USR-REQ CMTS to CM)
Identifier (CM MAC address).
Command Flags
- 0x0001 Restart PPP Link
- 0x0002 Restart DHCP process
- 0x0004 Re-perform TFTP
- 0x0008 Re-register with the CMTS
- 0x0010 Hang-up, no retry
TLV-encoded data (Optional)