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Nothing is perfect. We all know this, and we have to live with it. However, trying to improve is a key to success. This is true for cable networks as well. A bad plant condition and interferers may degrade the communication between CM and CMTS. Luckily though there is lot of data that can be monitored to detect quite some issues.
This blog post shows how to configure the ISC DHCP server to provision cable modems. Cable modems use DHCP, the Dynamic Host Configuration Protocol, to obtain the basic connectivity settings, including a number of DOCSIS-specific DHCP options.