Prerequisites for Configuring the Cisco CMTS
Complete these prerequisite steps before you power on and configure the Cisco CMTS:
- Ensure that your network supports reliable broadband data transmission. Your plant must be swept, balanced, and certified based on National Television Standards Committee (NTSC) or appropriate international cable plant recommendations. Ensure your plant meets all Data-over-Cable Service Interface Specifications (DOCSIS) downstream and upstream radio frequency (RF) requirements.
- Ensure that your Cisco CMTS is installed according to the instructions in the hardware installation guide available on Cisco.com.
- Ensure that all other
required headend or distribution hub routing and network interface equipment is
installed, configured, and operational (based on the supported services). This
- All routers
- Servers ( Dynamic Host Configuration Protocol (DHCP) servers, Trivial File Transfer Protocol ( TFTP) servers, and time-of-day (ToD) servers)
- Network management systems
- Other configuration or billing systems
- Ensure that DHCP and
DOCSIS configuration files have been created and pushed to appropriate servers
so that each CM, when initialized, can:
- Transmit a DHCP request
- Receive an IP address
- Obtain TFTP and ToD server addresses
- Download a DOCSIS configuration file (or updated software image if using Cisco uBR924 cable access routers or Cisco uBR910 cable data service units (DSUs) in your network)
- Ensure that customer premises equipment (CPE)—CMs or set-top boxes (STBs), PCs, telephones, or facsimile machines—meet requirements for your network and service offerings.
- Be familiar with your
channel plan to assign appropriate frequencies. Outline your strategies for
setting up bundling, if applicable to your headend or distribution hub. As
- IP addresses
- Subnet masks
- Device names
- Configuring a host name and password for the Cisco CMTS
- Configuring the CMTS to support IP over the cable plant and network backbone
If you plan to use service-class-based provisioning, the service classes must be configured at the CMTS before CMs attempt to make a connection.
Do not configure the logging event link-status command during system initialization. It may take long time or even stop the standby SUP from booting up.