Cisco DNCS System Release 2.2 3.2 Guide De Conception
2-6
Guidelines for Configuring the DBDS for DOCSIS
4000358 Rev B
IP Address Assignment,
Continued
Assigning Network Blocks to a CMTS Cable Interface Card
The following table illustrates how you can assign each CMTS cable interface card to
a network block or subnet for each end-user category (registered integrated cable
modems, registered stand-alone cable modems, DHCT CPE, and unregistered stand-
alone cable modems).
CMTS Cable
Interface Card
End User Category
Subnet Size per CMTS
Cable Interface
Sample Subnet
1
Registered ICM
/21 prefix
10.0.0.0
Registered SCM
/21 prefix
10.64.0.0
DHCT CPE
/21 prefix
10.32.0.0
Unregistered SCM
/24 prefix
10.96.0.0
2
Registered ICM
/21 prefix
10.0.8.0
Registered SCM
/21 prefix
10.64.8.0
DHCT CPE
/21 prefix
10.32.8.0
Unregistered SCM
/24 prefix
10.96.1.0
3
Registered ICM
/21 prefix
10.0.16.0
Registered SCM
/21 prefix
10.64.16.0
DHCT CPE
/21 prefix
10.32.16.0
Unregistered SCM
/24 prefix
10.96.2.0
4
Registered ICM
/21 prefix
10.0.24.0
Registered SCM
/21 prefix
10.64.24.0
DHCT CPE
/21 prefix
10.32.24.0
Unregistered SCM
/24 prefix
10.96.3.0