Cisco DNCS System Release 2.7 3.7 4.2 Guia Do Desenho
2-12
Guidelines for Configuring the DBDS for DOCSIS
4000358 Rev B
Enable Mixed DOCSIS/DAVIC in the DBDS
Introduction
This section provides a summary of what you must do to the various system
components to enable Mixed DOCSIS/DAVIC in the DBDS.
Enabling Mixed DOCSIS/DAVIC in the DBDS
To enable Mixed DOCSIS/DAVIC in the DBDS, you must do the following on the
DNCS, DHCP server, TFTP server, CMTS, and other routers:
DNCS
•
DNCS
•
Define the QPSK bridges.
Note: When operating in a Mixed DOCSIS/DAVIC mode, you do not have to
Note: When operating in a Mixed DOCSIS/DAVIC mode, you do not have to
define a CMTS bridge.
•
Add proper IP routes to reach the DHCT subnets.
CMTS
•
•
Add proper IP routes to reach the DNCS and DOCSIS servers.
•
Configure the RF interface with the following IP addresses:
−
−
Gateway IP address from the integrated cable modem IP address pool
−
Gateway IP address from the DHCT CPE IP address pool
−
Gateway IP address from the PC IP address pool (if offering high-speed data
service)
DHCP Server
You can use the same DHCP server that you use for your existing stand-alone cable
You can use the same DHCP server that you use for your existing stand-alone cable
modems with the following modifications:
•
•
Define the scopes for the integrated cable modem, DHCT CPE, and PC CPE
subnets.
•
Define the router gateway (in each policy) to match the respective subnet as
defined in the CMTS RF interface.
•
For proper routing, ensure that no IP addresses overlap between the following
devices:
−
−
Existing DAVIC DHCT and new Mixed DOCSIS/DAVIC DHCTs
−
Existing stand-alone cable modems and the newly deployed integrated cable
modems in the DOCSIS-capable DHCT
•
Add proper IP routes to reach the integrated cable modem, DHCT CPE, and PC
CPE subnets.
•
Add proper IP routes to reach the CMTS.