Modem Management
The DOCSIS Module exercises functional management over MAC layer and cable modem
processes.
MAC Layer Scheduling
Management at the MAC layer includes the following scheduling functions:
Cable Modem Management
The DOCSIS Module performs the following cable modem management functions:
Enhanced Routing and Bridging Features
The DOCSIS Module provides the following enhanced routing and bridging features that
provide additional value to MSOs:
See the JUNOSg Software Configuration Guide: Getting Started and System Management and the
JUNOSg Software Configuration Guide: Interfaces, Cable, Policy, and Routing and Routing
Protocols for more information on these and other DOCSIS Module features.
! Queueing upstream requests.
! Transmission opportunity allocation based on MAC messages from cable modems.
! QoS scheduling requirements, including congestion control, which have priority over
normal service flows.
! Prioritizing service flows for least delay.
! Maintenance opportunity allocation, including initial maintenance alignment.
! Registration of cable modems by service identifier (SID) assignments, and recording
time and address failures.
! Ranging by adjusting timing offset, transmit power, carrier frequency, and transmit
equalizer taps.
! Simultaneous IP routing (Layer 3) and IEEE 802.1 bridging (Layer 2).
! ARP proxy.
! Address authentication for ARP and IP packets.
! 802.1Q and stacked 802.1Q VLANs.
! Security and service class assignment to multicast service flows.
! IGMP packet snooping.
DOCSIS Module
Hardware Component Overview
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