Managing The HFC Environment Using Cable Modem Derived Performance Data (1999)

By Rex Bullinger, @Home Network

Analysts estimate that there are well over 112 million cable modems in use today in HFC networks. Due to a lack of adequate installation and maintenance tools a portion of these modems are operating with suboptimal receive and transmit levels.

The results of a survey of a number of modems show that upstream and downstream levels are often not ideal. The result of this is that a part of the network bandwidth in the HFC link layer is potentially being consumed in error correction.

Some tools currently available to the cable modem installer, network troubleshooter, and network maintenance technicians are described.

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