Cisco DNCS System Release 2.7 3.7 4.2 デザインガイド
Contents
, Continued
4000358 Rev B
v
Chapter 2
Guidelines for Configuring the DBDS for DOCSIS
Overview ........................................................................................................................ 2-1
Introduction ............................................................................................................... 2-1
In This Chapter .......................................................................................................... 2-1
Assumptions .................................................................................................................. 2-2
Introduction ............................................................................................................... 2-2
What Did We Assume? ............................................................................................ 2-2
IP Address Assignment ................................................................................................ 2-3
Introduction ............................................................................................................... 2-3
IP Addressing Scheme .............................................................................................. 2-3
Private IP Address Space ......................................................................................... 2-3
Assigning Network Blocks to a CMTS Cable Interface Card ............................. 2-6
CMTS Configuration .................................................................................................... 2-7
Introduction ............................................................................................................... 2-7
Interface Configuration ............................................................................................ 2-7
Global Configuration for the DOCSIS Set-top Gateway ..................................... 2-7
DNCS and Server Configurations .............................................................................. 2-9
Introduction ............................................................................................................... 2-9
DNCS .......................................................................................................................... 2-9
Mandatory DOCSIS1.0 Servers ............................................................................. 2-10
DHCP Server ........................................................................................................ 2-10
TFTP Server .......................................................................................................... 2-11
Optional Servers ...................................................................................................... 2-11
TOD Server ........................................................................................................... 2-11
DNS Server ........................................................................................................... 2-11
Enable Mixed DOCSIS/DAVIC in the DBDS ......................................................... 2-12
Introduction ............................................................................................................. 2-12
Enabling Mixed DOCSIS/DAVIC in the DBDS ................................................. 2-12
DNCS .................................................................................................................... 2-12
CMTS .................................................................................................................... 2-12
DHCP Server ........................................................................................................ 2-12
TFTP Server .......................................................................................................... 2-13
Other Routers ....................................................................................................... 2-13