Network addressing, Automatic switching, Dynamic power control – Comtech EF Data CDM-570/570L Vipersat User Manual

Page 9: Ecm migration, Glossary

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Receive Modulation Type . . . . . . . 3-67

Vipersat Summary . . . . . . . . . . . . . 3-67
Vipersat Migration . . . . . . . . . . . . . 3-69
UDP Port Base Address . . . . . . . . . . 3-69
Alerts . . . . . . . . . . . . . . . . . . . 3-70

Network Addressing

Introduction . . . . . . . . . . . . . . . . . . A-1
The OSI Reference Model. . . . . . . . . . . A-2

Layers 1 – 3 . . . . . . . . . . . . . . . . .A-2

Binary Math . . . . . . . . . . . . . . . . . . A-4
IP Addressing . . . . . . . . . . . . . . . . . A-6

IP Address Classes . . . . . . . . . . . . .A-6

Class A . . . . . . . . . . . . . . . .A-6
Class B . . . . . . . . . . . . . . . .A-6
Class C . . . . . . . . . . . . . . . .A-7
Class D . . . . . . . . . . . . . . . .A-7
Class E . . . . . . . . . . . . . . . .A-8

Private Network IP Addresses . . . . . .A-8
Network Address Translation (NAT) . . .A-8

Subnets . . . . . . . . . . . . . . . . . . .A-8
Subnet Mask. . . . . . . . . . . . . . . . .A-9
Network Segments . . . . . . . . . . . . A-10
Default Gateways . . . . . . . . . . . . . A-11
MAC Addresses . . . . . . . . . . . . . . A-11

Automatic Switching

General . . . . . . . . . . . . . . . . . . . . B-1
Load Switching . . . . . . . . . . . . . . . . B-3

Overview. . . . . . . . . . . . . . . . . . .B-3

Bandwidth Allocation and Load Switching by

the Hub STDMA Burst Controller . . .B-4

Load Switching—STDMA Hub . . . . . . .B-7

Hub Switching Parameters . . . . . . .B-7
Hub Switching Process . . . . . . . . .B-8

Load Switching—Remote . . . . . . . . . .B-9

Remote Switching Parameters . . . . .B-9
Determination for Switching . . . . . . B-11

Load Switch Example . . . . . . . . . . . B-12

Reduced Data Flow in Switched Mode

(SCPC) . . . . . . . . . . . . . . . B-13

Application Switching . . . . . . . . . . . . . B-15
ToS Switching . . . . . . . . . . . . . . . . . B-17

ToS Background . . . . . . . . . . . . . . B-17

Detection of ToS Stamped Packets . . B-18
Configuration . . . . . . . . . . . . . B-19

Example Implementations . . . . . . . . . B-20

ToS Switching Per Device . . . . . . . B-20
ToS Switching Per Traffic Type . . . . B-20

ToS Remarking . . . . . . . . . . . . B-21
ToS to DSCP Value Conversions . . . B-22
Mesh Setup Based on ToS Detection . B-23

Entry Channel Mode Switching . . . . . . . . B-24

STDMA Entry Channel Mode . . . . . . . B-24

Fail-Safe Operation . . . . . . . . . . B-25
Using STDMA ECM . . . . . . . . . . B-27

Switching an ECM Remote from SCPC to

STDMA . . . . . . . . . . . . . . B-28

Dynamic Entry Channel Mode . . . . . . B-30

Hub Configuration . . . . . . . . . . . B-31
Remote Configuration . . . . . . . . . B-32
ECM Processing . . . . . . . . . . . B-33

Dynamic Power Control

Introduction . . . . . . . . . . . . . . . . . . C-1
Description . . . . . . . . . . . . . . . . . . C-3

BER Waterfall Mapping . . . . . . . . . C-3
Delta Power Compensation . . . . . . . C-3

Theory of Operation. . . . . . . . . . . . . C-4

Configuration . . . . . . . . . . . . . . . . . C-7

Main DPC Menu . . . . . . . . . . . . . . C-9

Enable DPC . . . . . . . . . . . . . C-10
Target Eb/No . . . . . . . . . . . . C-10
Speed Up Eb/No Range. . . . . . . C-11
Target DPC (IP) Address . . . . . . C-11

Calculate Max Power Menu. . . . . . . . C-11

Calibrated Data Rate . . . . . . . . C-13
DPC Margin . . . . . . . . . . . . . C-13
Nominal Power Level . . . . . . . . C-13
Max Data Rate . . . . . . . . . . . C-13
Max Code Rate . . . . . . . . . . . C-13
Max Modulation . . . . . . . . . . . C-13
Max FEC Type . . . . . . . . . . . C-13
Calculate Max Power . . . . . . . . C-13
Max Power . . . . . . . . . . . . . C-14

Signal Power Level Considerations. . . . . . C-15

Power Considerations. . . . . . . . . . . C-16
Cabling Considerations . . . . . . . . . . C-16

ECM Migration

General . . . . . . . . . . . . . . . . . . . . D-1
Migration Procedure . . . . . . . . . . . . . D-3

Configure Remote Units. . . . . . . . . . . D-3
Configure Hub Unit . . . . . . . . . . . . . D-5

Glossary

. . . . . . . . . . . . . . . . . . . . . . . . . E-1

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