Alpha Technologies DOCSIS HMS - Manual (Page 11)

11 745-420-C0-002 Rev. B
2.0 Transponder Installation
Steps to a Successful Installation:
• Operator’s IT Department must allow the transponders’ Cable Modem (CM) to obtain an IP address
from the DHCP Server.
• Operator’s IT Department must load the HMSINIT.ini file on the TFTP Server.
• Operator’s network security policies must allow SNMP traffic to pass between transponder and
SNMP manager.
• Install the transponder and any related equipment in the power supply.
• Connect an RF drop.
• Verify proper operation.
2.1 Provisioning the Transponder
Complete Sections 2.1.1 and 2.1.2 before connecting the transponder to the RF network.
Otherwise, you must reset each transponder.
2.1.1 Network Connectivity
The transponder’s CM must be recognized by the CMTS as a valid device. The CM
must obtain an IP address from the DHCP server, locate the TFTP and TOD servers,
and communicate with the SNMP management server (trap receiver). CMTS and
system vendors use different security methods to insure network integrity, but some
common issues are:
• A “subscriber account” (where the subscriber is the transponder) may be required
for each transponder.
• The transponder’s MAC address may have to be pre-loaded into the CMTS.
• MAC filtering may have to be modified to allow MAC addresses starting with
00:10:3f:xx:xx:xx to be registered.
• For SNMP access, UDP ports 161 & 162 must not be blocked.
• Firewalls must allow communication between the CM and the TFTP, DHCP, SNMP,
and TOD servers.
• If the address of the TFTP and/or TOD server is different than the DHCP server, the
response from the DHCP server must contain the TFTP and TOD addresses.