System information

Configuring the CMTS
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2. Use the ip address secondary command to define the Gateway IP address
(giaddr) for CPE host DHCP requests or MTA DHCP requests that creates
individual subnets for host CPEs, and MTAs, as shown below:
MOT(conf-if)# ip address {<A.B.C.D> <A.B.C.D>} secondary {host | mta |
<cr>}
where:
A.B.C.D is the IP address.
A.B.C.D is the subnetwork IP address mask.
secondary specifies that the secondary IP address is a secondary IP address.
host optionally defines this secondary IP address as the giaddr to be inserted
into CPE host DHCP requests.
mta optionally defines this secondary IP address as the giaddr to be inserted
into MTA DHCP requests.
<cr> is a command return that defines a secondary IP address for CM DHCP
requests.
Creating a Modulation Profile
Modulation profile 1 and 2 are the default upstream modulation profiles containing
upstream burst parameters. Modulation profile numbers 1 or 2 can be modified, or
new upstream modulation profiles can be created for the cable interface. Follow the
steps in this section to modify or configure a new modulation interface profile to set
upstream burst parameters.
1. To view all existing modulation profiles, use the show cable modulation-profile
command in Privileged EXEC mode, as shown below:
MOT#show cable modulation-profile
Note: The primary IP address for the cable interface is used for CM DHCP
requests.