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Download C3 CMTS User Documentation
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4 Bridge Operation By defining the default cable sub-interface for modem traffic to be different than the default for CPE traffic, modem traffic can be removed from the bridge group that contains the CPE traffic. This requires that the modem DHCP, TFTP, and ToD servers be present on the fastethernet 0/1 interface as in the following example. The following diagram shows the default, version 2.0-compatible, operating mode. CMTS management traffic and cable modem traffic share bridge group 0. Backbone fastethernet 0/0.0 bridge-group 1 bridge 1 cable 1/0.1 PC bridge-group 1 default cpe subinterface cable 1/0.0 fastethernet 0/1.0 boot IP address bridge-group 0 bridge 0 Cable Operator DHCP/TFTP/TOD cable 1/0.0 Modem bridge-group 0 default cm subinterface cable 1/0.0 Figure 4-8: Default, V2.0 compatible, operating mode 4-12 ARRIS PROPRIETARY — All Rights Reserved 11/14/05
