Comtech EF Data CDM-425, Инструкция по установке и эксплуатации

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CDM-425 Advanced Satellite Modem
Revision 0
Table of Contents xii MN-CDM-425
J.3.2.3 HTTP (Web Server) Interface........................................................................................ J–7
J.4 List of Supported Internet RFCs (Requests for Comment)..................................................... J–8
J.5 IP Packet Processor Field Upgrade Procedure ........................................................................ J–9
J.5.1 Overview ................................................................................................................................... J–9
J.5.2 Requirements for Field Upgrade ............................................................................................... J–9
J.5.3 Field Upgrade Procedure ........................................................................................................ J–10
APPENDIX K. VERSAFEC
®
/ VERSAFEC-2 ACM ADAPTIVE CODING AND MODULATION (ACM)
OPTION .......................................................................................................................................K–1
K.1 Overview ..................................................................................................................................... K–1
K.2 Background ................................................................................................................................ K–2
K.3 Requirements for ACM .............................................................................................................. K–3
K.4 An Existing Satellite ACM Scheme ........................................................................................... K–7
K.5 Disadvantages of DVB-S2 ......................................................................................................... K–7
K.6 VersaFEC ACM ........................................................................................................................... K–8
K.6.1 VersaFEC ACM Latency ......................................................................................................... K–10
K.6.2 Configuring VersaFEC ACM ................................................................................................... K–12
K.7 VersaFEC-2 ACM and CCM...................................................................................................... K–16
K.7.1 VersaFEC-2 ACM Latency ...................................................................................................... K–20
K.7.2 Configure VersaFEC-2 ACM ................................................................................................... K–21
K.8 Monitoring ACM Performance ................................................................................................ K–23
K.9 ACM Congestion Control ........................................................................................................ K–23
K.10 Using ACM with AUPC ............................................................................................................. K–24
K.11 Notes and Recommendations ................................................................................................. K–25
K.12 Summary of Specifications ..................................................................................................... K–27
K.12.1 VersaFEC ACM ....................................................................................................................... K–27
K.12.2 VersaFEC-2 ACM.................................................................................................................... K–29
APPENDIX L. IP SUB-MUX ................................................................................................................. L–1
L.1 Overview ...................................................................................................................................... L–1
L.2 Available Ratios ........................................................................................................................... L–1
L.3 Data Rate vs. Composite Rate ................................................................................................... L–2
APPENDIX M. QUALITY OF SERVICE (QOS) ................................................................................... M–1
M.1 Overview ..................................................................................................................................... M–1
M.1.1 QoS Terminology ..................................................................................................................... M–1
M.2 Layer 2 QoS ................................................................................................................................ M–2
M.2.1 Modem Tx Data Rate vs. QoS Tx Data Rate ........................................................................... M–2
M.2.2 Flow Control ............................................................................................................................. M–3
M.2.3 Port-based Layer 2 QoS .......................................................................................................... M–3
M.2.4 VLAN-based Layer 2 QoS ....................................................................................................... M–5
M.3 Layer 3 QoS ................................................................................................................................ M–8
M.3.1 Layer 3 QoS Max-Pri Mode ..................................................................................................... M–8
M.3.2 Layer 3 QoS Min-Max Mode .................................................................................................. M–10
M.3.3 Layer 3 QoS DiffServ Mode ................................................................................................... M–12
M.3.3.1 Layer 3 QoS Congestion Avoidance .......................................................................... M–12
M.3.3.2 Layer 3 QoS List of Supported RFCs (Requests for Comment) ................................ M–13
M.4 QoS with Adaptive Coding and Modulation (ACM) ............................................................... M–14
M.4.1 Maximum Clipping ................................................................................................................. M–14
M.4.2 Minimum Data Rate ............................................................................................................... M–14
APPENDIX N. TRANSMIT SPECTRUM FILTERING OPTIONS .........................................................N–1
N.1 Overview ..................................................................................................................................... N–1
N.2 Observations and Recommendations ..................................................................................... N–1