Cisco DNCS System Release 2.7 3.7 4.2 Design Guide
4000358 Rev B
This section describes the network element requirements your DBDS must comply
with to operate DOCSIS-capable DHCTs.
Network Element Requirements
The network elements in your DBDS must meet the following requirements to
operate DOCSIS-capable DHCTs.
The CMTS unit(s) used must adhere to the specifications detailed in the following
Data-Over-Cable Service Interface Specifications Radio Frequency Interface
Data-Over-Cable Service Interface Specifications Cable Modem to Customer Premise
Equipment Interface Specification
Data-Over-Cable Service Interface Specifications Operations Support System Interface
The DHCP server(s) used must adhere to the specifications detailed in Dynamic
Host Control Protocol, RFC-2131, March, 1997.
DHCTs booting in DAVIC mode must receive an IP address from a private
address pool managed by the DNCS.
DHCTs booting in DOCSIS or Mixed DOCSIS/DAVIC mode must receive cable
modem and DHCT CPE IP addresses from address pools managed by the DHCP
server. The address pools managed by the DHCP server may be public or private.
If you are unsure of your system’s ability to meet these requirements, contact your
network administrator or Cisco Services to arrange for a network analysis.