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Hardware Component Overview
DOCSIS Module
35
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:
!
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.
Cable Modem Management
The DOCSIS Module performs the following cable modem management functions:
!
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.
Enhanced Routing and Bridging Features
The DOCSIS Module provides the following enhanced routing and bridging features that
provide additional value to MSOs:
!
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.
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.
Содержание G10 CMTS
Страница 8: ... JUNOSg 3 0 G10 CMTS Hardware Guide viii ...
Страница 18: ... JUNOSg 3 0 G10 CMTS Hardware Guide 2 ...
Страница 34: ...G10 CMTS Hardware Overview JUNOSg 3 0 G10 CMTS Hardware Guide 18 ...
Страница 46: ...DOCSIS Module JUNOSg 3 0 G10 CMTS Hardware Guide 30 Figure 12 DOCSIS Module Front Panel HotSwap ...
Страница 55: ... Hardware Component Overview Chassis Control Module 39 Figure 15 Chassis Control Module Front Panel Eth0 ...
Страница 72: ...Chassis Rear Modules JUNOSg 3 0 G10 CMTS Hardware Guide 56 Figure 21 Hard Disk Module Rear Panel C O M Eth ...
Страница 82: ... JUNOSg 3 0 G10 CMTS Hardware Guide 66 ...
Страница 112: ...Rack Mounting JUNOSg 3 0 G10 CMTS Hardware Guide 96 Figure 25 Air Flow Through Chassis ...
Страница 116: ...Rack Mounting JUNOSg 3 0 G10 CMTS Hardware Guide 100 Figure 29 Rack Fully Populated with Three G10 CMTS Chassis ...
Страница 118: ...Install Power Supplies JUNOSg 3 0 G10 CMTS Hardware Guide 102 Figure 30 Power Supply Installation 1 2 ...
Страница 138: ...Connect to Power Sources JUNOSg 3 0 G10 CMTS Hardware Guide 122 Figure 39 DC Power Transition Module ...
Страница 148: ... JUNOSg 3 0 G10 CMTS Hardware Guide 132 ...
Страница 156: ...Upstream RF Measurement JUNOSg 3 0 G10 CMTS Hardware Guide 140 ...
Страница 188: ... JUNOSg 3 0 G10 CMTS Hardware Guide 172 ...
Страница 196: ...Radio Frequency RF Specifications JUNOSg 3 0 G10 CMTS Hardware Guide 180 ...
Страница 202: ...EIA Channel Plans JUNOSg 3 0 G10 CMTS Hardware Guide 186 ...
Страница 203: ... 187 Part 5 Index Index on page 189 ...
Страница 204: ... JUNOSg 3 0 G10 CMTS Hardware Guide 188 ...
Страница 209: ... Index 193 Index V ventilation 69 89 95 101 124 161 162 167 video servers 7 voltage power supply 27 ...
Страница 210: ... Index JUNOSg 3 0 G10 CMTS Hardware Guide 194 ...