When set at 1, establishing connections and initial transfer speed might slow down a bit, however you will get better throughput if somewhere in the path large packets need to be fragmented. Setting this parameter to 0 causes MTU to default to 576. RR Web Proxy Speed up your web surfing by using the RR Web caching proxy server. But, since there are no bandwidth restrictions on a regular account, monitoring means very little. See Memphis RR for more information.
Cable modems are a shared media.
See my Austin xDSL Central for more information.