Figure 17 shows an example of a cable modem network. Multiple cable modem termination systems (CMTSs) connect to multiple shared media access LANs. Many subscribers connect to each LAN.
In this example, the service provider uses subscriber interfaces to direct traffic toward special local content on the network: a voice over Internet Protocol (VoIP) service on network 10.11.0.0/16, or a local gaming service on network 10.12.0.0/16. Rate limits and policies on the subscriber interface customize the service level for the associated service. In this application, the E-series router is the first-hop router for the subscribers, and the subscriber interfaces demultiplex traffic based on the destination address.
Figure 17: Subscriber Interfaces in a Cable Modem Network
For instructions on configuring the application shown in Figure 17, see Using a Destination Address to Demultiplex Traffic.
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