Mocomtech CIM-550 User Manual
CiM-550
IP-Enabled Satellite Modem
Installation and Operation Manual
Part Number CD/CIM550.IOM
Rev. 2
December 3, 2002
Errata A
Comtech EFData Documentation Update
Subject:
Date:
Document:
Part Number:
Collating Instructions:
Comments:
The following changes provide updated information TX Carrier On/Off State. This information
will be incorporated into the next revision.
Changes to Chapter 5 Serial Remote Control
December 16, 2002
CiM-550 Satellite Modem Installation and Operation Manual,
Rev. 2, dated December 16, 2002
CD/CiM550.EA2
Attach this page to page 5-9
Tx
Carrier
On/Off
State
Change Specifics:
TXO= 1 byte,
value of 0,
1, 2, or 3
Command or Query.
Tx Carrier On/Off state, where:
0 = Off due to front panel or rem. control command
1 = On
2 = Off due to ext H/W Tx Carrier Off command (not a valid
argument when used as a command) All other codes
invalid.
3 = RTI
Example: TXO=1 (which is Tx Carrier On)
TXO= (message ok)
TXO? (received ok,
but invalid argument
found)
TXO* (message ok,
but not permitted in
current mode)
TXO? TXO=x (Note
that 2 is not a
valid
argument
when used as
a command)
Filename: T_ERRATA 1
Errata B
Comtech EF Data Documentation Update
Subject:
Date:
Document:
Part Number:
Collating Instructions:
Comments:
The following changes provide additional information for Front Panel Menus. This information
will be incorporated into the next revision.
Addition to Chapter 4, Front Panel Menus
January 15, 2003
CiM-550 IP Enabled Satellite Modem Installation and Operation
Manual, Rev. 2, dated December 16, 2002
CD/CiM550.EB2
Attach this page to page 47
Change Specifics:
4.1.6.9 SELECT\INFO\FAST
DISPLAY SELECTIONS/DESCRIPTION
FAST OPTIONS: 123456789
550T LS MODE: OFF
The FAST options are:
550T LS Mode: OFF/ON
TCP Acceleration OFF/ON
Data Encryption OFF/ON
IP Data Compression OFF/ON
Quality of Service OFF/ON
Network Addrs Trans: OFF/ON
Transparent Bridging: OFF/ON
IGMP: OFF/ON
Header Cmpression: OFF/ON
Filename: T_ERRATA 1
Comtech EF Data is an ISO 9001
Registered Company.
CiM-550
IP Satellite Enable Modem
Installation and Operation Manual
Part Number CD/CIM550.IOM
REV. 2
December 3, 2002
Copyright © Comtech EF Data, 2002. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, (480) 333-2200, FAX: (480) 333-2161
CiM-550 IP Enabled Satellite Modem Rev. 2
Preface CD/CIM550.IOM
CUSTOMER SUPPORT
Contact the Comtech EF Data Customer Support Department for:
Product support or training
Information on upgrading or returning a product
Reporting comments or suggestions concerning manuals
Contact Customer Support using any of the following methods:
Mail: Comtech EF Data
Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA
Phone: (480) 333-22 00 (Main Comtech EF Data Number)
Email: cimfss@comtechefdata.com
Internet: www.comtechefdata.com
(480) 333-4357 (Customer Support Desk)
Fax: (480) 333-2161
To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or
replacement:
1. Request a Return Material Authorization (RMA) number from the Comtech EF Data
Customer Support Department.
2. Be prepared to supply the Customer Support representative with the model number, serial
number, and a description of the problem.
3. To ensure that the product is not damaged during shipping, pack the product in its original
shipping carton/packaging.
4. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)
For more information regarding the warranty policies, see Warranty Policy, p. xx.
ii
Table of Contents
FIGURES..................................................................................................................... XV
TABLES...................................................................................................................... XVI
CHAPTER 1. INTRODUCTION....................................................................................1
1.1 Introduction............................................................................................................................. 1
1.2 Major Assemblies....................................................................................................................2
1.3 Standard Features................................................................................................................... 2
1.3.1 AUPC................................................................................................................................. 2
1.3.2 Software............................................................................................................................. 3
1.3.3 Verification........................................................................................................................3
1.3.4 Data Interfaces...................................................................................................................3
1.3.5 CDM-550 Emulation Mode............................................................................................... 3
1.4 Options..................................................................................................................................... 4
1.4.1 Turbo Product Coding (TPC) ............................................................................................ 4
1.4.2 TCP Acceleration...............................................................................................................4
1.4.3 DES Encryption with Ability to Change Keys..................................................................4
1.4.4 IP Datagram Compression................................................................................................. 5
1.4.5 IP Header Compression .....................................................................................................5
1.4.6 Quality of Service..............................................................................................................5
1.4.7 Network Address Translation (NAT) ................................................................................ 5
1.4.8 EasyConnect for non-IP traffic....................................................................................... 5
1.4.9 IGMP Support for Multicast.............................................................................................. 5
1.4.10 1:1 Redundancy Configuration........................................................................................ 5
1.5 Specifications........................................................................................................................... 6
1.6 Dimensional Envelope .......................................................................................................... 11
CHAPTER 2. INSTALLATION...................................................................................13
2.1 Unpacking and Inspection....................................................................................................13
2.2 Mounting Kits........................................................................................................................13
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2.3 Configuration........................................................................................................................14
2.4 Select Internal IF Loop......................................................................................................... 14
2.5 Connect External Cables......................................................................................................14
2.6 Connector Description..........................................................................................................14
CHAPTER 3. OPERATION........................................................................................17
3.1 Methods of Operation...........................................................................................................17
3.1.1 Front Panel Operation...................................................................................................... 18
3.1.2 Serial Remote Control Operations................................................................................... 18
3.1.3 Serial Command Line Interface (CLI) Operations .......................................................... 18
3.1.4 Telnet Operations............................................................................................................. 18
3.1.5 Web Server Operation......................................................................................................19
3.1.6 SNMP Operations............................................................................................................ 19
CHAPTER 4. FRONT PANEL MENUS......................................................................21
4.1 Front Panel Operation.......................................................................................................... 21
4.1.1 Keypad............................................................................................................................. 21
4.1.2 Vacuum Fluorescent Display (VFD)...............................................................................22
4.1.3 Led Indicators .................................................................................................................. 23
4.1.4 Menu Tree........................................................................................................................ 23
4.1.5 Menu Screens................................................................................................................... 27
4.1.6 SELECT\INFO ................................................................................................................ 44
4.1.7 SELECT\MONIT............................................................................................................. 47
4.1.8 SELECT\STORE\LD....................................................................................................... 52
4.1.9 SELECT\UTIL................................................................................................................. 53
4.1.10 SELECT\ODU............................................................................................................... 54
CHAPTER 5. SERIAL REMOTE CONTROL.............................................................55
5.1 Introduction........................................................................................................................... 55
5.2 EIA-485.................................................................................................................................. 55
5.3 EIA-232.................................................................................................................................. 56
5.4 Basic Protocol........................................................................................................................ 56
5.5 Packet Structure.................................................................................................................... 57
5.5.1 Start Of Packet................................................................................................................. 57
5.5.2 Address ............................................................................................................................ 57
5.5.3 Instruction Code...............................................................................................................58
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5.5.4 Instruction Code Qualifier ............................................................................................... 58
5.5.5 Message Arguments......................................................................................................... 60
5.5.6 End Of Packet..................................................................................................................60
CHAPTER 6. THEORY OF OPERATION..................................................................81
6.1 Functional Description.........................................................................................................81
6.2 Offset QPSK Operation........................................................................................................ 82
6.3 EIA-232 Operation................................................................................................................83
6.3.1 ASYNC EIA-232 Specifications ..................................................................................... 83
6.3.2 Setup ................................................................................................................................ 83
6.3.3 CLOCKING..................................................................................................................... 84
6.3.4 Transmit and Receive Clocking....................................................................................... 86
6.4 AUPC (Automatic Uplink Power Control).........................................................................88
6.4.1 Setting AUPC Parameters................................................................................................ 88
6.4.2 Compensation Rate.......................................................................................................... 90
6.4.3 Monitoring ....................................................................................................................... 90
CHAPTER 7. FORWARD ERROR CORRECTION OPTIONS ..................................91
7.1 Introduction........................................................................................................................... 91
7.2 Viterbi ....................................................................................................................................91
7.3 Sequential...............................................................................................................................92
7.4 Turbo Product Codec (Option)............................................................................................93
7.5 Uncoded Operation (No FEC) ............................................................................................. 96
CHAPTER 8. EDMAC CHANNEL............................................................................ 105
8.1 Theory Of Operation.......................................................................................................... 105
8.1.1 On the transmit side:...................................................................................................... 105
8.1.2 On the receive side.........................................................................................................106
8.2 M&C Connection................................................................................................................ 107
8.3 Setup Summary...................................................................................................................108
CHAPTER 9. EB/NO MEASUREMENT...................................................................109
9.1 Measuring Eb/No................................................................................................................109
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CHAPTER 10. CONNECTOR PINOUTS .................................................................111
10.1 Data Connector - 25 Pin ‘D’ Type Female......................................................................111
10.2 Alarms Connector - 15 Pin ‘D’ Type Male.....................................................................112
10.3 Remote Control Connector - 9 Pin ‘D’ Type Male........................................................113
10.4 Auxiliary Serial Connector – He1402 3 Pin Header...................................................... 113
10.5 Async-Serial Console........................................................................................................114
10.6 Ethernet Interface Connector..........................................................................................114
CHAPTER 11. CLI AND TELNET INTERFACE.......................................................115
11.1 Overview............................................................................................................................ 115
11.2 Main Menu Page...............................................................................................................116
11.2.1 Administration Page..................................................................................................... 118
11.2.2 Interface Configuration Page....................................................................................... 130
11.2.3 Route Table Configuration Page.................................................................................. 135
11.2.4 Protocol Configuration Page........................................................................................142
11.2.5 Modem Parameters Page.............................................................................................. 148
11.2.6 Redundancy Configuration Page ................................................................................. 158
11.2.7 Operations and Maintenance Page...............................................................................161
11.2.8 Telnet - Logout Option ................................................................................................173
CHAPTER 12. WEB SERVER PAGES.................................................................... 175
12.1 Web Server Usage............................................................................................................. 175
12.2 Web Server Menu Tree....................................................................................................175
12.3 Web Server Pages ............................................................................................................. 178
12.3.1 Home Page................................................................................................................... 178
12.3.2 Logoff .......................................................................................................................... 179
12.3.3 Contact Information..................................................................................................... 180
12.3.4 Support......................................................................................................................... 181
12.3.5 Administration ............................................................................................................. 182
12.3.6 Configuration Summary............................................................................................... 184
12.3.7 Monitoring and Reports............................................................................................... 199
12.3.8 Maintenance................................................................................................................. 207
CHAPTER 13. SNMP INTERFACE..........................................................................211
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13.1 SNMP Interface................................................................................................................. 211
13.2 MIB-II................................................................................................................................ 211
13.2.1 System Group............................................................................................................... 212
13.2.2 Interface Group............................................................................................................ 214
13.2.3 ICMP Group................................................................................................................. 221
13.2.4 TCP Group................................................................................................................... 222
13.2.5 UDP Group .................................................................................................................. 223
13.2.6 EGP Group................................................................................................................... 225
13.2.7 Transmission Group..................................................................................................... 225
13.2.8 SNMP Group ............................................................................................................... 225
13.3 Private MIB Implementations.........................................................................................227
13.4 CIM IP Controller Private MIB...................................................................................... 227
13.4.1 CIM Administration Group.......................................................................................... 227
13.4.2 Interface Group............................................................................................................ 235
13.5 CiM 550 Private MIB .......................................................................................................247
13.5.1 CiM 550 Objects Group............................................................................................... 247
13.6 CiM IP Controller MIB Tree: ......................................................................................... 262
13.7 CiM IP Controller MIB.................................................................................................... 268
13.7.1 cimController............................................................................................................... 268
13.7.2 cimControllerIdentity................................................................................................... 268
13.7.3 cimAdministration.......................................................................................................268
13.7.4 cimMibVersion............................................................................................................269
13.7.5 cimNamePasswordConfig............................................................................................ 269
13.7.6 cimAdminName...........................................................................................................270
13.7.7 cimAdminPassword..................................................................................................... 270
13.7.8 cimReadWriteName..................................................................................................... 271
13.7.9 cimReadWritePassword...............................................................................................271
13.7.10 cimReadOnlyName....................................................................................................272
13.7.11 cimReadOnlyPassword.............................................................................................. 272
13.7.12 cimAccessLists .......................................................................................................... 273
13.7.13 cimAccessIpAddress1................................................................................................ 273
13.7.14 cimAccessSubnetMaskLen1...................................................................................... 274
13.7.15 cimAccessIpAddress2................................................................................................ 274
13.7.16 cimAccessSubnetMaskLen2...................................................................................... 275
13.7.17 cimAccessIpAddress3................................................................................................ 275
13.7.18 cimAccessSubnetMaskLen3...................................................................................... 276
13.7.19 cimAccessIpAddress4................................................................................................ 276
13.7.20 cimAccessSubnetMask4............................................................................................277
13.7.21 cimAccessListEnforcement ....................................................................................... 277
13.7.22 cimFeaturesAvailability............................................................................................. 278
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13.7.23 cimDatagramCompressionOption..............................................................................278
13.7.24 cimNaptOption........................................................................................................... 279
13.7.25 cimQosOption............................................................................................................ 279
13.7.26 cimTcpAccelerationOption........................................................................................ 280
13.7.27 cimTransparentBridgeOption .................................................................................... 280
13.7.28 cimEncryptionOption................................................................................................. 281
13.7.29 cimIgmpOption.......................................................................................................... 281
13.7.30 cimHeaderCompressionOption..................................................................................282
13.7.31 cimFeaturesConfig..................................................................................................... 282
13.7.32 cimMidasFeature........................................................................................................ 282
13.7.33 cimTelnetFeature ....................................................................................................... 283
13.7.34 cimPingResponseFeature........................................................................................... 283
13.7.35 cimDownlinkMulticastRoutingFeature...................................................................... 284
13.7.36 cimDatagramCompressionOpt................................................................................... 284
13.7.37 cimNaptOpt................................................................................................................285
13.7.38 cimQosOpt................................................................................................................. 285
13.7.39 cimTcpAccelerationOpt............................................................................................. 286
13.7.40 cimTransparenetBridgeOpt........................................................................................286
13.7.41 cimTransmitDesEncryptionOpt................................................................................. 287
13.7.42 cimReceiveDesEncryptionOpt................................................................................... 287
13.7.43 cimIgmpOpt............................................................................................................... 288
13.7.44 cimHeaderCompressionOpt....................................................................................... 288
13.7.45 cimDesEncryptConfig................................................................................................ 289
13.7.46 cimTransmitEncryptEnabled ..................................................................................... 289
13.7.47 cimReceiveDecryptEnabled....................................................................................... 290
13.7.48 cimTransmitKey1 ...................................................................................................... 290
13.7.49 cimTransmitKey2 ...................................................................................................... 291
13.7.50 cimReceiveKey1........................................................................................................ 291
13.7.51 cimReceiveKey2........................................................................................................ 292
13.7.52 cimSmtp..................................................................................................................... 292
13.7.53 cimSmtpServerIpAddress..........................................................................................293
13.7.54 cimSmtpDomain........................................................................................................293
13.7.55 cimSmtpDestinationName......................................................................................... 294
13.7.56 cimSnmp....................................................................................................................294
13.7.57 cimSnmpTrapDestinationIpAddress.......................................................................... 295
13.7.58 cimSnmpTrapCommunity..........................................................................................295
13.7.59 cimSnmpTrapVersion................................................................................................ 296
13.7.60 cimSnmpAuthenticationFailureCommunity.............................................................. 296
13.7.61 cimSnmpAuthenticationFailureAddress.................................................................... 297
13.7.62 cimInterfaces.............................................................................................................. 297
13.7.63 cimEthernetInterface..................................................................................................297
13.7.64 cimEthernetMacAddress............................................................................................298
13.7.65 cimEthernetSpeed......................................................................................................298
13.7.66 cimEthernetIpAddress................................................................................................ 299
13.7.67 cimEthernetSubnetPrefixLen..................................................................................... 299
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13.7.68 cimSatelliteInterface..................................................................................................300
13.7.69 cimSatelliteIpAddress................................................................................................ 300
13.7.70 cimSatelliteSubnetPrefixLen ..................................................................................... 301
13.7.71 cimSatelliteReceiveEnable ........................................................................................ 301
13.7.72 cimSatelliteTransmitEnable....................................................................................... 302
13.7.73 cimSatelliteHdlcAddress1.......................................................................................... 302
13.7.74 cimSatelliteHdlcAddress2.......................................................................................... 303
13.7.75 cimSatelliteHdlcAddress3.......................................................................................... 303
13.7.76 cimSatelliteHdlcAddress4.......................................................................................... 304
13.7.77 cimRouteTable...........................................................................................................304
13.7.78 cimGlobalQosEnable................................................................................................. 305
13.7.79 cimIpRouteTable........................................................................................................ 305
13.7.80 cimIpRouteEntry........................................................................................................ 306
13.7.81 cimIpRouteIndex........................................................................................................307
13.7.82 cimIpRouteName.......................................................................................................307
13.7.83 cimIpRouteDestAddress............................................................................................308
13.7.84 cimIpRouteDestMaskLen..........................................................................................308
13.7.85 cimIpRouteNextHopAddress..................................................................................... 309
13.7.86 cimIpRouteMulticastOptions..................................................................................... 309
13.7.87 cimIpRouteMinQosBandwidth.................................................................................. 310
13.7.88 cimIpRouteMaxQosBandwidth ................................................................................. 310
13.7.89 cimIpRouteDesKey.................................................................................................... 311
13.7.90 cimIpRouteRowStatus ...............................................................................................312
13.7.91 cimIpRoutePriority .................................................................................................... 313
13.7.92 cimProtocols .............................................................................................................. 313
13.7.93 cimIgmpConfig.......................................................................................................... 313
13.7.94 cimIgmpTable............................................................................................................ 314
13.7.95 cimIgmpEntry............................................................................................................314
13.7.96 cimIgmpIndex............................................................................................................ 315
13.7.97 cimIgmpTTL.............................................................................................................. 315
13.7.98 cimIgmpClientState...................................................................................................316
13.7.99 cimIgmpSrc................................................................................................................ 316
13.7.100 cimIgmpGroupIpAddress ........................................................................................ 317
13.7.101 cimIgmpReceiver..................................................................................................... 317
13.7.102 cimIgmpEnable........................................................................................................ 318
13.7.103 cimIgmpQueryPeriod............................................................................................... 318
13.7.104 cimIgmpMaxRespTime ........................................................................................... 319
13.7.105 cimIgmpMaxMissBeforeDrop................................................................................. 319
13.7.106 cimIgmpTransmiter.................................................................................................. 320
13.7.107 cimIgmpRecognizeQueries...................................................................................... 320
13.7.108 cimIgmpVersionUnsolicitedReports........................................................................ 321
13.7.109 cimIgmpForceAlertOption....................................................................................... 321
13.7.110 cimIgmpUnsolicitedReportInterval .........................................................................322
13.7.111 cimArpConfig..........................................................................................................322
13.7.112 cimFlushArpTable ................................................................................................... 323
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13.7.113 cimArpTable............................................................................................................323
13.7.114 cimArpEntry ............................................................................................................ 324
13.7.115 cimArpIndex............................................................................................................324
13.7.116 cimArpIpAddress..................................................................................................... 325
13.7.117 cimArpPhysAddress ................................................................................................ 325
13.7.118 cimArpPhysType ..................................................................................................... 326
13.7.119 cimArpRowStatus.................................................................................................... 327
13.7.120 cimRedundancy........................................................................................................ 328
13.7.121 cimCurrentRedundantState...................................................................................... 328
13.7.122 cimLocalUnitManagementIpAddress...................................................................... 329
13.7.123 cimRedundantUnitManagementIpAddress.............................................................. 329
13.7.124 cimRedundantTrafficIpAddress............................................................................... 330
13.7.125 cimRedundantTrafficSubnetMaskLen..................................................................... 330
13.7.126 cimForceUnitOffline................................................................................................331
13.7.127 cimOperMaint.......................................................................................................... 331
13.7.128 cimAppVersion........................................................................................................ 332
13.7.129 cimSaveConfiguration ............................................................................................. 332
13.7.130 cimReset................................................................................................................... 333
13.7.131 cimRemotePortBConfig........................................................................................... 333
13.7.132 cimRemotePortBDeviceAddress .............................................................................334
13.7.133 cimRemotePortBBaudRate...................................................................................... 334
13.7.134 cimRemotePortBFormat..........................................................................................335
13.7.135 cimRemotePortBInterface........................................................................................ 335
13.7.136 cimStatistics............................................................................................................. 336
13.7.137 cimSatelliteTransmitStatistics..................................................................................336
13.7.138 cimSatelliteTransmitTable....................................................................................... 336
13.7.139 cimSatelliteTransmitEntry....................................................................................... 337
13.7.140 cimSatelliteTransmitIndex....................................................................................... 338
13.7.141 cimSatelliteTransmitRouteName............................................................................. 338
13.7.142 cimSatelliteTransmitTotalPacketsTransmitted........................................................ 339
13.7.143 cimSatelliteTransmitTotalPacketsDropped ............................................................. 339
13.7.144 cimSatelliteTransmitMinDataRate .......................................................................... 340
13.7.145 cimSatelliteTransmitMaxDataRate.......................................................................... 340
13.7.146 cimSatelliteTransmitAvgDataRate..........................................................................341
13.7.147 cimIpRoutingStatistics.............................................................................................341
13.7.148 cimUnicastIpPacketsToSatellite..............................................................................342
13.7.149 cimUnicastIpPacketsToEthernet..............................................................................342
13.7.150 cimMulticastIpPacketsToSatellite ...........................................................................343
13.7.151 cimMulticastIpPacketsToEthernet...........................................................................343
13.7.152 cimBroadcastIpPacketsToSatellite .......................................................................... 344
13.7.153 cimBroadcastIpPacketsToEthernet.......................................................................... 344
13.7.154 cimPacketsFromSatellite..........................................................................................345
13.7.155 cimTotalIpPacketsToSatellite.................................................................................. 345
13.7.156 cimTotalIpPacketsToEthernet.................................................................................. 346
13.7.157 cimIgmpPacketsReceived........................................................................................ 346
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13.7.158 cim............................................................................................................................ 346
13.7.159 IpOptionPacketsReceived........................................................................................ 347
13.7.160 cimDroppedPacketsTotal......................................................................................... 347
13.7.161 cimDroppedPacketsTTLExpired ............................................................................. 348
13.7.162 cimDroppedPacketsBadIpHeader............................................................................ 348
13.7.163 cimDroppedPacketsNoRoute................................................................................... 349
13.7.164 cimDroppedPacketsMulticastNoStoe......................................................................349
13.7.165 cimDroppedPacketsFiltered..................................................................................... 350
13.7.166 cimDroppedPacketsMulticastDisableGroup............................................................350
13.7.167 cimDroppedPacketsNoArpEntry ............................................................................. 351
13.7.168 cimDroppedPacketsBadBufferLength..................................................................... 351
13.7.169 cimDroppedPacketsBadIpVersion........................................................................... 352
13.7.170 cimDroppedPacketsMiscellaneous..........................................................................352
13.7.171 cimDroppedPacketsQos........................................................................................... 353
13.7.172 cimDroppedPacketsQosBuffers............................................................................... 353
13.7.173 cimDroppedPacketsDroppedBuffers ....................................................................... 354
13.7.174 cimResetCounters....................................................................................................354
13.8 CiM-550 MIB Tree ........................................................................................................... 355
13.9 CiM-550 MIB .................................................................................................................... 359
13.9.1 cim550.......................................................................................................................... 359
13.9.2 cim550Objects .............................................................................................................359
13.9.3 cim550SystemInfo....................................................................................................... 359
13.9.4 cim550EquipmentID.................................................................................................... 360
13.9.5 cim550UnitSerialNumber............................................................................................ 360
13.9.6 cim550SoftwareRevision.............................................................................................361
13.9.7 cim550DeviceTime......................................................................................................361
13.9.8 cim550DeviceDate....................................................................................................... 362
13.9.9 cim550CircuitID..........................................................................................................362
13.9.10 cim550LocalRemoteState.......................................................................................... 363
13.9.11 cim550TxParameters .................................................................................................363
13.9.12 cim550TxFrequency..................................................................................................364
13.9.13 cim550TxDataRate....................................................................................................364
13.9.14 cim550TxModType ................................................................................................... 365
13.9.15 cim550TxFECType.................................................................................................... 366
13.9.16 cim550TxFECCodeRate............................................................................................ 367
13.9.17 cim550TxSpecInv...................................................................................................... 367
13.9.18 cim550TxScrambler................................................................................................... 368
13.9.19 cim550TxClockSource .............................................................................................. 368
13.9.20 cim550TxPowerLevel................................................................................................369
13.9.21 cim550TxCarrierState................................................................................................369
13.9.22 cim550RxParameters................................................................................................. 370
13.9.23 cim550RxFrequency.................................................................................................. 370
13.9.24 cim550RxDataRate.................................................................................................... 371
13.9.25 cim550RxDemodType............................................................................................... 371
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13.9.26 cim550RxFECType ................................................................................................... 372
13.9.27 cim550RxFECCodeRate............................................................................................373
13.9.28 cim550RxSpecInv...................................................................................................... 373
13.9.29 cim550RxDescrambler .............................................................................................. 374
13.9.30 cim550RxClockMode................................................................................................ 374
13.9.31 cim550RxBufferSize.................................................................................................. 375
13.9.32 cim550RxAcqSweepRange ....................................................................................... 375
13.9.33 cim550RxEbnoAlarmPoint........................................................................................ 376
13.9.34 cim550InterfaceParameters........................................................................................ 376
13.9.35 cim550IfImpedance ................................................................................................... 377
13.9.36 cim550InterfaceType.................................................................................................377
13.9.37 cim550UtilityParameters ........................................................................................... 378
13.9.38 cim550UnitFramingMode.......................................................................................... 378
13.9.39 cim550EdmacAddress ...............................................................................................379
13.9.40 cim550UnitTestMode................................................................................................379
13.9.41 cim550RecenterBuffer............................................................................................... 380
13.9.42 cim550ForceRedundentSwitch.................................................................................. 380
13.9.43 cim550UnitAlarmMask ............................................................................................. 381
13.9.44 cim550UnitConfigStore............................................................................................. 381
13.9.45 cim550UnitConfigLoad............................................................................................. 382
13.9.46 cim550OduCommEnable........................................................................................... 382
13.9.47 cim550AupcParameters............................................................................................. 383
13.9.48 cim550AupcEnable....................................................................................................383
13.9.49 cim550AupcControlParameters.................................................................................384
13.9.50 cim550RemoteEbno................................................................................................... 384
13.9.51 cim550TxPowerLevelIncrease .................................................................................. 385
13.9.52 cim550StatusParameters............................................................................................ 385
13.9.53 cim550RxEbno .......................................................................................................... 386
13.9.54 cim550RxCoarseAGC ............................................................................................... 386
13.9.55 cim550RxFrequencyOffset........................................................................................ 387
13.9.56 cim550BufferFillState................................................................................................ 387
13.9.57 cim550RxBER...........................................................................................................388
13.9.58 cim550RedundancyState............................................................................................ 388
13.9.59 cim550ModemUnitFaults..........................................................................................389
13.9.60 cim550ModemTxTrafficFaults..................................................................................389
13.9.61 cim550ModemRxTrafficFaults.................................................................................. 390
13.9.62 cim550Logs................................................................................................................ 390
13.9.63 cim550ClearEventsLog.............................................................................................. 391
13.9.64 cim550NumberUnreadEvents.................................................................................... 391
13.9.65 cim550RetrieveNext5Events ..................................................................................... 392
13.9.66 cim550SetStatisticInterval......................................................................................... 392
13.9.67 cim550ClearStatisticsLog.......................................................................................... 393
13.9.68 cim550NumberUnreadStatistics................................................................................393
13.9.69 cim550RetrieveNext5Statistics..................................................................................394
13.9.70 cim550Notifications................................................................................................... 394
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13.9.71 cim550NotificationsPrefix......................................................................................... 394
13.9.72 cim550ModemUnitFaultsNotification....................................................................... 395
13.9.73 cim550ModemTxTrafficFaultsNotification .............................................................. 395
13.9.74 cim550ModemRxTrafficFaultsNotification..............................................................395
13.9.75 oduObjects ................................................................................................................. 396
13.9.76 oduSelect....................................................................................................................396
13.9.77 oduSystemInfo........................................................................................................... 396
13.9.78 oduModelNumberSoftwareVer..................................................................................397
13.9.79 oduUnitSerialNumber................................................................................................ 397
13.9.80 oduDeviceTime.......................................................................................................... 398
13.9.81 oduDeviceDate........................................................................................................... 398
13.9.82 oduCircuitID..............................................................................................................399
13.9.83 oduUnitParameters..................................................................................................... 399
13.9.84 oduUnitMuteMode..................................................................................................... 400
13.9.85 oduUnitColdStart....................................................................................................... 400
13.9.86 oduUnitAutoFaultRecovery....................................................................................... 401
13.9.87 oduUnitExtRefFaultLogic.......................................................................................... 401
13.9.88 oduUnitRefOscAdjust................................................................................................402
13.9.89 oduUnitLNACurrentSource....................................................................................... 402
13.9.90 oduUnitLNACurrentWindow....................................................................................403
13.9.91 oduUnitLNAFaultLogic............................................................................................. 404
13.9.92 oduUnitRedundancyMode......................................................................................... 404
13.9.93 oduUnitRedForceSwitch............................................................................................ 405
13.9.94 oduTxParameters .......................................................................................................405
13.9.95 oduTxFrequency........................................................................................................406
13.9.96 oduTxAttenuation......................................................................................................406
13.9.97 oduTxAmplifier .........................................................................................................407
13.9.98 oduTxMute................................................................................................................. 407
13.9.99 oduTxSlopeMode....................................................................................................... 408
13.9.100 oduTxSlopeValue .................................................................................................... 408
13.9.101 oduTxGainOffset ..................................................................................................... 409
13.9.102 oduRxParameters..................................................................................................... 409
13.9.103 oduRxFrequency...................................................................................................... 410
13.9.104 oduRxAttenuation.................................................................................................... 410
13.9.105 oduRxMute .............................................................................................................. 411
13.9.106 oduRxSlopeMode .................................................................................................... 411
13.9.107 oduRxSlopeValue....................................................................................................412
13.9.108 oduRxGainOffset..................................................................................................... 412
13.9.109 oduUnitStatus........................................................................................................... 413
13.9.110 oduOnlineState......................................................................................................... 413
13.9.111 oduMaintenanceParameters..................................................................................... 414
13.9.112 oduUnitFaults........................................................................................................... 414
13.9.113 oduLogs.................................................................................................................... 415
13.9.114 oduClearEventsLog.................................................................................................. 415
13.9.115 oduNumberUnreadEvents........................................................................................ 416
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13.9.116 oduRetrieveNext5Events ......................................................................................... 416
13.9.117 oduNotifications....................................................................................................... 417
13.9.118 oduNotificationsPrefix............................................................................................. 417
13.9.119 oduUnitFaultsNotification ....................................................................................... 417
CHAPTER 14. CIM IP MODULE CHECKOUT AND FAULT ISOLATION ............... 419
14.1 Introduction....................................................................................................................... 419
14.2 CiM IP ModuleCheckout.................................................................................................419
14.2.1 Equipment List........................................................................................................ 420
14.2.1 Equipment Setup..........................................................................................................420
14.2.2 PC Coniguration........................................................................................................... 420
14.2.3 Transmit and Receive IF Configuration ...................................................................... 421
14.2.4 Basic IP Configuration................................................................................................. 421
14.2.5 Main Menu...................................................................................................................422
14.2.6 Restoring factory Default Configuration.....................................................................422
14.2.7 CiM 1 Configuration.................................................................................................... 422
14.2.8 CiM 2 Configuration.................................................................................................... 424
14.2.9 Verification..................................................................................................................424
14.3 Troubleshooting IP Module.............................................................................................425
APPLICATION NOTE - FLASH UPGRADING THE CIM-550 SATELLITE MODEMS
....................................................................................................................................427
INDEX.........................................................................................................................431
METRIC CONVERSIONS........................................................................................... 433
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Figures
Figure 1-1. Typical Coarse AGC Voltage Characteristic............................................................10
Figure 1-2. Cim-550 Dimensional Envelope............................................................................... 11
Figure 3-1. Front Panel................................................................................................................18
Figure 3-2. Rear Panel ................................................................................................................. 18
Figure 4-1. Front Panel Modem Menu Tree (1 of 3)...................................................................24
Figure 4-2. Front Panel Modem Menu Tree (2 of 3)...................................................................25
Figure 4-3. Front Panel Modem Menu Tree (3 of 3)...................................................................26
Figure 4-4. Loopback Modes....................................................................................................... 43
Figure 6-1. Tx Clock Modes........................................................................................................ 86
Figure 6-2. RX Clock Modes.......................................................................................................87
Figure 7-1. Viterbi Decoding....................................................................................................... 98
Figure 7-2. Sequential Decoding 64 kbps...................................................................................99
Figure 7-3. Sequential Decoding 1024 kbps..............................................................................100
Figure 7-4. Sequential Decoding 2048 kbps..............................................................................101
Figure 7-5. Comtech EF Data Turbo Product Codec................................................................. 102
Figure 7-6. Differential Encoding No FEC............................................................................... 103
Figure 10-1. Rear Panel ............................................................................................................. 111
Figure 11-1. CRS-100/CiM-550 Cabling Details...................................................................... 158
Figure 14-1. Main Menu............................................................................................................ 422
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Tables
Table 4-1. Front Panel LED Indicators........................................................................................ 23
Table 7-1. Viterbi Decoding Summary........................................................................................ 92
Table 7-2. Sequential Decoding Summary.................................................................................. 93
Table 10-1. Data Connector - 25 Pin ‘D’ Type Female............................................................ 111
Table 10-2. Alarms Connector - 15 Pin ‘D’ Type Male............................................................ 112
Table 10-3. Remote Control Connector - 9 Pin ‘D’ Type Male................................................ 113
Table 10-4. Auxiliary Serial Connector - He1402 3 Pin Header............................................. 113
Table 10-5. Async-Serial Console RJ11-6................................................................................. 114
Table 10-6. Ethernet Interface RJ45-8....................................................................................... 114
Table 12-1. CiM-550 Web Server Menu Tree........................................................................... 176
Table 12-2. Admin Fields..........................................................................................................182
Table 12-3. Interface Configuration Fields................................................................................ 185
Table 12-4. Routes Configuration Fields................................................................................... 188
Table 12-5. Multicast Routes Configuration Fields................................................................... 189
Table 12-6. ARP Table Fields ................................................................................................... 190
Table 12-7. QoS Fields.............................................................................................................. 191
Table 12-8. IGMP Fields ........................................................................................................... 192
Table 12-9. DES Encryption Fields........................................................................................... 193
Table 12-10. Redudancy Configuration Fields.......................................................................... 194
Table 12-11. Monitoring and Reports Fields............................................................................. 199
Table 13-1. MIB-II Support....................................................................................................... 212
Table 13-2. System Group......................................................................................................... 212
Table 13-3. System Services...................................................................................................... 213
Table 13-4. Interfaces Table OIDs............................................................................................. 214
Table 13-5. Address Translation Table OIDs............................................................................ 216
Table 13-6. IPGroup OIDs......................................................................................................... 216
Table 13-7. IPAddress Table OIDs............................................................................................ 218
Table 13-8. IP Routing Table OIDs........................................................................................... 219
Table 13-9. Address Translation Table OIDs............................................................................ 220
Table 13-10. IP Routing Table OIDs......................................................................................... 221
Table 13-11. TCP Group OIDs.................................................................................................. 222
Table 13-12. TCP Connection Table OIDs................................................................................ 223
Table 13-13. UDP Group OIDs................................................................................................. 223
Table 13-14. UDP Listener Table OIDs.................................................................................... 224
Table 13-15. SNMP Group OIDs .............................................................................................. 225
Table 13-16. CiM Name Password Config Subgroup OIDs...................................................... 227
Table 13-17. CiM Access Lists Subgroup OIDs ....................................................................... 228
Table 13-18. FAST Features....................................................................................................... 229
Table 13-19. Features Subgroup................................................................................................ 230
Table 13-20. Encryption Subgroup OIDs..................................................................................231
Table 13-21. CIM SMTP OIDs ................................................................................................. 231
Table 13-22. CiM SNMP Community Names........................................................................... 232
Table 13-23. CIM SNMP Trap COnfiguration OIDs................................................................ 234
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Table 13-24. Ethernet Interface Subgroup OIDs....................................................................... 235
Table 13-25. Satellite Ijnterface Subgroup OIDs ...................................................................... 236
Table 13-26. Route Table Group OIDs...................................................................................... 237
Table 13-27. Route Table OIDs................................................................................................. 237
Table 13-28. IGMP Configuration Subgroup OIDs .................................................................. 239
Table 13-29. ARP Configuration Subgroup OIDs..................................................................... 240
Table 13-30. CiM ARP Table OIDs..........................................................................................240
Table 13-31. Redundancy OIDs ................................................................................................ 242
Table 13-32. Operation and Maintenance Subgoup OIDs......................................................... 242
Table 13-33. Remote Port B Configuration Subgroup OIDs..................................................... 243
Table 13-34. Satellite Transmit Statistics Subgroup OIDs........................................................ 244
Table 13-35. IP Routing Statistics Subgroup OIDs................................................................... 245
Table 13-36. ARP Configuration Subgroup OIDs..................................................................... 247
Table 13-37. Tx Parameters OIDs.............................................................................................247
Table 13-38. Rx Parameters OIDs............................................................................................. 249
Table 13-39. Interface Parameters OIDs ................................................................................... 250
Table 13-40. Utility Parameters OIDs.......................................................................................250
Table 13-41. AUPC Parameter OIDs......................................................................................... 252
Table 13-42. Status Parameter OIDs ......................................................................................... 253
Table 13-43. Logs OIDs ............................................................................................................ 255
Table 13-44. ODU System Information OIDs........................................................................... 256
Table 13-45. ODU Unit OIDs.................................................................................................... 257
Table 13-46. ODU Tx Parameters OIDs.................................................................................... 258
Table 13-47. ODU Rx Parameters OIDs ................................................................................... 259
Table 13-48. ODU Unit Status OIDs......................................................................................... 260
Table 13-49. ODU Logs OIDs................................................................................................... 261
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ABOUT THIS MANUAL
This manual provides installation and operation information for the Comtech EF Data
Cim-550 IP Enabled Satellite Modem. This is a technical document intended for earth
station engineers, technicians, and operators responsible for the operation and
maintenance of the Cim-550 IP Enabled Satellite Modem.
RELATED DOCUMENTS
Comtech EF Data CDM-550 Satellite Modem Installation and Operation Manual
CONVENTIONS AND REFERENCES
CAUTIONS AND WARNINGS
Indicates information critical for proper equipment function.
IMPORTANT
Indicates a hazardous situation that, if not avoided, may result in minor or
moderate injury. CAUTION may also be used to indicate other unsafe practices
CAUTION
or risks of property damage.
Indicates a potentially hazardous situation that, if not avoided, could result
WARNING
in death or serious injury.
METRIC CONVERSION
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.
RECOMMENDED STANDARD DESIGNATIONS
Recommended Standard (RS) Designations have been superseded by the new designation
of the Electronic Industries Association (EIA). References to the old designations are
shown only when depicting actual text displayed on the screen of the unit (RS-232, RS485, etc.). All other references in the manual will be shown with the EIA designations
(EIA-232, EIA-485, etc.) only.
TRADEMARKS
All product names mentioned in this manual may be trademarks or registered trademarks
of their respective companies and are hereby acknowledged.
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REPORTING COMMENTS OR SUGGESTIONS CONCERNING THIS MANUAL
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EF Data Customer
Support Department.
EMC COMPLIANCE
This is a Class A product. In a domestic environment, it may cause radio interference that
requires the user to take adequate protection measures.
EN55022 COMPLIANCE
This equipment meets the radio disturbance characteristic specifications for information
technology equipment as defined in EN55022.
EN50082-1 COMPLIANCE
This equipment meets the electromagnetic compatibility/g eneric immunity standard as
defined in EN50082-1.
FEDERAL COMMUNICATIONS COMMISSION (FCC)
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment.
This equipment generates, uses, and can radiate radio frequency energy. If not installed
and used in accordance with the instruction manual, it may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference; in which case, users are required to correct the interference at their
own expense.
Note: To ensure co mpliance, properly shielded cables for DATA I/O shall be used. More
specifically, these cables shall be shielded from end to end, ensuring a continuous shield.
SAFETY COMPLIANCE
EN 60950
Applicable testing is routinely performed as a condition of manufacturing on all units to
ensure compliance with safety requirements of EN60950.
This equipment meets the Safety of Information Technology Equipment specification as
defined in EN60950.
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LOW VOLTAGE DIRECTIVE (LVD)
The following information is applicable for the European Low Voltage Directive
(EN60950):
<HAR> Type of power cord required for use in the European Community.
!
International Symbols:
Symbol Definition Symbol Definition
Alternating Current.
Note: For additional symbols, refer to “Cautions” listed earlier in this preface.
WARRANTY POLICY
This Comtech EF Data product is warranted against defects in material and workmanship
for a period of two years from the date of shipment. During the warranty period, Comtech
EF Data will, at its option, repair or replace products that prove to be defective.
CAUTION: Double-pole/Neutral Fusing.
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.
Protective Earth.
Fuse.
Chassis Ground.
For equipment under warranty, the customer is responsible for freight to Comtech EF
Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible
for the freight charges only for return of the equipment from the factory to the customer.
Comtech EF Data will return the equipment by the same method (i.e., Air, Express,
Surface) as the equipment was sent to Comtech EF Data.
LIMITATIONS OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repackaging of
equipment for return to Comtech EF Data.
No other warranty is expressed or implied. Comtech EF Data specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
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EXCLUSIVE REMEDIES
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech EF
Data shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
DISCLAIMER
Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-touse guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EF Data reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding the equipment or the information in this manual,
please contact the Comtech EF Data Customer Support Department.
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NOTES:
xxii
CiM-550
IP-Enabled
Satellite
Modem
Chapter 1. Introduction
Introduction 1
Major Assemblies 2
Options 4
Specifications 6
Dimensional Envelope 11
1.1 INTRODUCTION
The CiM-550 is a high-performance, low-cost, IP-enabled satellite modem designed for
closed network Single Channel Per Carrier (SCPC) links. It is ideal for many VSAT
applications. Offering a range of data rates from 2.4 to 2048 kbps in 1 bit per second
steps, the modem includes Viterbi forward error correction as standard. The Turbo
Product Codec is available as an option.
The modem is compact, 1U high and 12 inches deep, and consumes only 25 watts
typically. It has the following configuration and control capabilities:
Front panel VFD display and keypad for local configuration and control
Rear panel Remote Control Serial interface (DB9) for modem configuration and
control.
Rear panel Console Port (RJ-11) for Ethernet interface configuration and control.
Rear panel Ethernet Data interface (RJ-45).
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1.2 MAJOR ASSEMBLIES
Assembly Description
PL/0391 Modem Card
PL/9161-1 IP Module
1.3 STANDARD FEATURES
10baseT/100baseT Ethernet Interface
Static IP routing for unicast and multicast
Powerful network management
Web Server interface for complete product management
SNMP with private MIB
Telnet interface for remote product M & C
Console Port interface for local network management
Configurable serial interface (EIA-232 or RS485) for local management
Remote software/firmware upgrade via FTP
Configuration backup and restore via FTP
Local software/firmware via console port
Data rates from 2.4 to 2048 kbps
Symmetric as well as asymmetric operation for maximum bandwidth efficiency
Automatic Uplink Power Control (AUPC)
CDM-550 Emulation Mode
1.3.1 AUPC
An important innovation in the CiM-550 is the addition of Automatic Uplink Power
Control (AUPC). This feature enables the modem to automatically adjust its output
power to maintain the Eb/No of the remote end of the satellite link constant. This
provides protection against rain fading, a particularly severe problem with Ku-band links.
To accomplish this, the framed mode of operation must be used, and the distant end
modem constantly sends back information about the demodulator Eb/No using reserved
bytes in the overhead structure. Using the Eb/No, the local modem then adjusts its output
power, and hence, a closed-loop feedback system is created over the satellite link.
A benefit of this feature is that whenever framed operation is selected, the remote
demodulator’s Eb/No can be viewed from the front panel display of the local modem.
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1.3.2 SOFTWARE
The internal software is both powerful and flexible, permitting storage and retrieval of up
to 10 different modem configurations. The modem uses ‘flash memory’ technology
internally, and new firmware can be uploaded to the unit from an external PC. This
simplifies software upgrading, and updates can now be sent via the Internet, E-mail, or on
disk. The upgrade can be performed without opening the unit, by simply connecting the
modem to the serial port of a computer.
1.3.3 VERIFICATION
The unit includes many test modes and loopbacks for rapid verification of the correct
functioning of the unit. Of particular note is the IF loopback, which permits the user to
perform a quick diagnostic test without having to disturb external cabling. During the
loopback, all of the receive configuration parameters are temporarily changed to match
those of the transmit side. When normal operation is again selected, all of the previous
values are restored.
1.3.4 DATA INTERFACES
The CiM-550 includes, as standard, a universal data interface which eliminates the need
to exchange interface cards for different applications. The interfaces offered include:
10baseT/100baseT Ethernet (RJ-45 connector)
EIA-422 (EIA530) DCE
V.35 DCE
Synchronous EIA-232 DCE
Asynchronous EIA-232 (at data rates up to 56 kbaud)
X.21 DTE and DCE
1.3.5 CDM-550 EMULATION MODE
The CiM-550 can be made to operate in CDM-550 emulation mode, where it behaves
exactly like the Comtech EF Data CDM-550 satellite modem. The emulation mode is
selected from the front panel by selecting Configuration/Interface and then selecting
either EIA-422/530, V.35, or EIA-232 as the interface rather than IP. The CiM-550 will
then pass standard serial traffic, like a CDM-550, but will not pass IP traffic. The CiM550 can still be accessed via the ethernet port using Telnet, HTTP, or SNMP.
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1.4 OPTIONS
Enhancing the CiM-550’s performance is easy. Additional features can be added quickly
on site, using the FAST access code purchased from Comtech EF Data. To enable these
features, simply enter the code at the front panel.
Description Software Version
Turbo Product Coding (TPC) 1.0.1 and Later TCP acceleration Future DES Data Encryption 1.0.1 and Later IP Datagram Compression Future IP Header Compression Future Quality of Service (QoS) 1.0.1 and Later Network Address Translation (NAT) Future EasyConnect for non-IP traffic IGMP support for multicast 1.0.1 and Later 1:1 Redundancy with CRS-100 1.0.1 and Later
1.4.1 TURBO PRODUCT CODING (TPC)
The optional Turbo Product Coding (TPC) is a recent development in FEC techniques
that delivers significant performance improvements when compared to Viterbi with
concatenated Reed-Solomon. TPC simultaneously offers increased coding gain,
markedly lower decoding delay (leading to improved TCP/IP performance), and
bandwidth savings of up to 40%. The TPC option includes two modes (BPSK 22/44 and
BPSK 5/16) that permit operation from exceptionally small antennas, where flux density
issues are of concern.
1.4.2 TCP ACCELERATION
To compensate for the TCP performance degradation in a high delay and high BER (Bit
Error Rate) environment, the CiM-550 incorporates an optional proprietary transparent
TCP acceleration mechanism that will allow a TCP session to optimally use the available
link capacity, while preserving end-to-end transport reliability. TCP acceleration will be
subject to user configured Quality of Service (QoS) restrictions for the route.
Future
1.4.3 DES ENCRYPTION WITH ABILITY TO CHANGE KEYS
The CiM-550 optionally supports DES-56 encryption and decryption. Each unit supports
2 encryption keys and 2 decryption keys. The keys are user configurable. Each route can
be assigned to be encrypted by key 1 or key 2 or transmitted in clear.
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