Comtec CDM-840 - M.3.1 DPC Operation Using the HTTP Interfaces

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CDM-840 Remote Router MN-CDM840

Appendix M Revision 3

M–18

M.3.1 DPC Operation Using the HTTP Interfaces

Figure M-9 shows the CDM-840 and CDD-880 HTTP Interface “splash” pages, and the menu tree

diagrams for accessing the operation specified in this appendix for DPC operation. Page

functionality not specific to DPC operation appears dimmed in these diagrams.

(TOP) CDM-840 HTTP Interface

(BOTTOM) CDD-880 HTTP Interface

Figure M-9. HTTP Interfaces – Splash Pages and DPC Operation Menu Trees

(FW Ver. 1.6.2.X)

Main Page

Default Chapter8
- Table of Contents8
- Figure 1-1. CDM-840 Remote Router33
- Figure 1-2. Advanced VSAT Series Network Topology Example33
Features36
- Physical Description36
  - Standard Assemblies36
  - Optional Assemblies36
- Dimensional Envelope37
- Figure 1-3. CDM-840 Dimensional Envelope37
- Physical Features38
- On-Site Firmware Updates41
- On-Site Operational Upgrades41
- Monitor and Control Interfaces41
Specifications42
- Product Features42
- Physical, Power, and Environmental42
- Modulator43
  - Transmit43
  - Block up Converter (BUC) Support44
- Demodulator44
  - Receive44
  - Low Noise Block down Converter (LNB) Support45
- BER (Bit Error Rate)46
  - BER Monitor Functions46
- Regulatory Compliance46
Chapter 2. Installation47
Unpack and Inspect the Shipment47
- Figure 2-1. Unpack and Inspect the Shipment47
Install the Unit into a Rack Enclosure48
- 2.2.1 Install the Optional Rear Support Brackets Kit49
- Figure 2-2. Install the Unit into a Rack Enclosure49
- Figure 2-3. Install the Optional Rear Support Brackets Kit50
Chapter 3. Rear Panel Connections53
Overview - Cabling Connection Types53
- Figure 3-1. Coaxial Connector Examples54
- Figure 3-2. D-Subminiature Connector Examples56
Cabling Connections57
- Table 3-1. CDM-840 Rear Panel Connectors57
CDM-840 Ground and Power Connections63
- Common Chassis Ground Interface63
- Figure 3-4. Chassis Ground Interface63
- 230V Alternating Current (AC) Power Interface (Standard)64
- 48V Direct Current (DC) Power Interface (Optional)66
Chapter 4. Updating Firmware69
Firmware Update Overview69
Getting Started: Prepare for the Firmware Download70
Download and Extract the Firmware Update74
Perform the Ethernet FTP Upload Procedure76
Chapter 5. Fast Activation Procedure79
FAST Overview79
FAST Activation Via the HTTP Interface80
- Figure 5-1. CDM-840 HTTP Interface - 'Admin | FAST' Page80
  - 5.2.1 FAST Configuration81
  - 5.2.2 FAST Upgrade82
Chapter 6. Ethernet-Based Remote Product Management83
Overview83
Ethernet Management Interface Protocols84
- 6.2.1 Ethernet Management Interface Access84
- Figure 6-1. CDM-840 Serial Interface84
- 6.2.2 SNMP Interface85
  - Management Information Base (MIB) Files85
  - SNMP Community Strings86
- 6.2.3 HTTP (Web Server) Interface86
HTTP Interface92
- Home92
- Admin (Administration)94
- Configuration101
- Status148
  - Status | Statistics148
  - Status | Monitor160
    - Status | Monitor | Events160
    - Status | Monitor | Alarms161
- Utility163
Chapter 7. Serial-Based Remote Product Management169
Overview169
Remote Commands and Queries Overview171
- Basic Protocol171
- Packet Structure172
Remote Commands and Queries177
- Transmit (Tx) Parameters Commands and Queries180
- Receive (Rx) Parameters Commands and Queries182
- Demodulator Status Commands and Queries184
- Transmit (Tx) BERT Command or Query185
- Receive (Rx) BERT Command or Query185
- BUC (Block up Converter) Parameters Commands and Queries185
- LNB (Low-Noise Block down Converter) Parameters Commands and Queries189
- Unit Parameters Commands and Queries190
- Bulk Configuration String Commands197
- Redundancy Commands and Queries198
- Vipersat Management System (VMS) Commands and Queries199
- Entry Channel Mode (ECM) Commands and Queries200
- Miscellaneous Utility Commands and Queries201
Appendix A. Reference Documentation203
Overview203
FEC (Forward Error Correction) Options204
ACM/VCM (Adaptive Coding and Modulation / Variable Coding and Modulation) Operation205
BPM (Bridge Point-To-Multipoint) Operation206
ECM (Entry Channel Mode) Operation207
Dmesh (VMS Dynamic Mesh) Connectivity208
DPC (VMS Dynamic Power Control) Operation209
Appendix B. Fec (Forward Error Correction) Options211
FEC Overview211
DVB-S2: LDPC and BCH211
- Range of Data Rates212
- BER, QEF, Eb/No, Es/No Spectral Efficiency, and Occupied Bandwidth212
Versafec (Short-Block LDPC213
- Range of Data Rates214
Rx/Tx Error Performance Characteristics214
- Table B-1. the Versafec Modcod Set214
Appendix C. Data Collection223
Data Collection Overview223
Initial Setup of Communications between the CDM-840 and the User PC225
Collect the Pre-Reboot Diagnostic Information from the CDM-840226
Collect and Report the Post-Reboot Diagnostic Information from the CDM-840227
Serial Adapter Cable Fabrication Specifications Reference229
Appendix D. Versafec Return Link Acm (Adaptive Coding and Modulation) Option231
Functional Overview231
- Background232
- Table D-1. the Versafec Modcod Set233
- Table D-2. Versafec Implementation of ACM - 100 Ksymbols/Sec Example Case234
Versafec ACM235
CDM-840 Versafec ACM Operation235
- Versafec ACM Operation Using the HTTP Interfaces235
- Troubleshooting238
- Monitoring ACM Performance238
- Modcod Switch Points238
ACM Congestion Control239
Notes and Recommendations240
Summary of Specifications241
Appendix E. Bpm (Bridge Point-To-Multipoint) Operation243
Functional Overview243
- BPM Terminology244
Supported Network Configurations245
- Flat Network245
- Flat Network with Routers245
- VLAN Trunking246
Packet Processing246
- Traffic Network / Ethernet Switch Behavior246
- Management Network247
IEEE 802.1Q Support248
- VLAN Trunking248
- Access Mode Support248
- Multiple VLAN Tagging Support249
Multicast BPM Behavior249
- Multicast Management/Routed Behavior (no Change250
BPM and Group Qos with Outbound ACM/VCM250
Hub Network Configuration251
Compatible Features and Detailed Specifications255
Summary256
Appendix F. Carrier ID (Dvb-CID Metacarrier257
Functional Overview257
- About Metacarrier257
- Functional Description258
CDM-840 Carrier ID Operation259
- CID Operation - CDM-840 HTTP Interface259
- CID Operation - Serial Remote Control262
Appendix G. Ecm (Entry Channel Mode265
Functional Overview265
- ECM Terminology265
- ECM Overview266
- ECM Message Processing269
ECM Operational Scenarios271
- Scenario 1 - VMS Initial Registration Process271
- Scenario 2 - Reverted or Auto-Recovered Messages271
  - G.2.2.1 ECM Revert Cycle Timing272
  - G.2.2.2 Ecmv2 Backoff Algorithm272
ECM Operation274
- ECM Operation - CDM-840 Serial Remote Control275
- ECM Operation - HTTP Interfaces276
  - G.3.2.1 CDM-840 HTTP Operation - Remote Router Terminals278
  - HTTP Operation - Hub Channel Controller (HCC281
    - Tap Message282
    - HCC Configuration283
Appendix H. Header and Payload Compression285
Functional Overview285
- Traffic Optimization286
- Compression Performance286
- Table H-1. Comtech AHA Gzip Performance Comparisons287
- Table H-2. Comtech AHA Gzip Performance Specifications Support287
CDM-840 Header and Payload Compression Operation288
- Enable or Disable Header and Payload Compression Operation290
- Configure Header and Payload Compression Refresh Rates291
- Table H-3. Compression Performance291
Appendix J. Return Group Qos (Quality of Service295
Overview295
- Qos List of Supported Rfcs (Requests for Comment295
- Qos Terminology295
- Return 2-Level Group Qos297
- Qos Operation Via Remote Product Control299
Qos Groups301
- Qos Group Matching301
- Maximum Clipping316
- Minimum Data Rate316
Qos Statistics Reporting319
Appendix K. Ran/Wan Optimization321
Overview321
- K.1.2 RAN Inefficiency322
E1 RAN Optimization323
- K.2.1 Process Overview324
Appendix L. Dmesh (Vms Dynamic Mesh) Solutions333
Overview333
Operational Features334
- VMS (Vipersat Management System334
- Return Link Versafec® ACM (Adaptive Coding and Modulation336
  - Versafec336
  - ACM (Adaptive Coding and Modulation336
    - ACM and Dmesh337
    - ACM and DPC (Dynamic Power Control337
Operational Example338
- Requirements for Bandwidth-On-Demand and Dmesh with SHOD (Single Hop on Demand338
- Dmesh Operation338
  - Create a Distribution List339
Summary343
- Table L-1. Comtech EF Data Product Compatibility Reference343
Compatibility343
Appendix M. Dpc (Vms Dynamic Power Control345
Overview345
- M.1.1 Background346
Theory of Operation346
- M.2.1 about DPC346
- M.2.2 DPC Functionality347
  - Entrance Link Cabling347
  - Operational Essentials348
- M.2.3 DPC Operational Considerations351
- M.2.4 Roaming with DPC360
DPC Operation361
- M.3.1 DPC Operation Using the HTTP Interfaces362
Firmware Update369
Final Considerations369

Comtec CDM-840 - M.3.1 DPC Operation Using the HTTP Interfaces

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