Arris C4 User manual

C4® CMTS Release 8.3
User Guide
STANDARD Revision 1.0
November 2016

C4/C4c CMTS Release 8.3 User Guide
ARRIS Standard Software License Terms and Warranty Table
Unless your company has executed a separate agreement which contains terms and conditions for software licensing of
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Hardware and Software, contain proprietary information and trade secrets that are confidential information of ARRIS.
ARRIS reserves the right to audit the use of Customer’s Hardware and Software.
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Within this document the following terms are defined as follows:
“ARRIS” means ARRIS Solutions, Inc., a wholly owned subsidiary of ARRIS Enterprises, Inc. and/or its designated affiliates.
“Customer” means the person or entity however constituted to whom the Products or Services are provided.
“Hardware” means equipment designed and manufactured by ARRIS, or other manufacturer's equipment offered for sale
by ARRIS to Customer.
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thereto, in object code form only, and any full or partial copies thereof. Software is licensed by ARRIS separately or as part
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Provided that the Customer has paid all applicable license fees to ARRIS, and assuming that the Customer has not
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appropriate Open Source software as per the applicable GPL.
ARRIS C4® CMTS and E6000®Converged Edge Router Warranty

ARRIS Product Categories
Warranty Period from Shipment Date
Domestic U.S.
Outside of U.S.
All ARRIS CMTS products including WiDOX CMTS, C3, C4, C4c, D5
UEQ and E6000 CER; and EGT Encoder Solutions: Encore and Quartet
Encoders, VIPr Video Transcoder and System Solutions, and HEMi
Headend Micro Solutions.
Hardware—one (1) Year
Software—ninety (90) days
Hardware—one (1) Year
Software—ninety (90) days
Copyright and Trademark Information
E6000® Converged Edge Router
©ARRIS Enterprises, Inc. 2016 All rights reserved. No part of this publication may be reproduced in any form or by any
means or used to make any derivative work (such as translation, transformation, or adaptation) without written
permission from ARRIS Enterprises, Inc. (“ARRIS”). ARRIS reserves the right to revise this publication and to make changes
in content from time to time without obligation on the part of ARRIS to provide notification of such revision or change.
ARRIS and the ARRIS logo are all trademarks of ARRIS Enterprises, Inc. Other trademarks and trade names may be used in
this document to refer to either the entities claiming the marks and the names of their products. ARRIS disclaims
proprietary interest in the marks and names of others.
ARRIS provides this guide without warranty of any kind, implied or expressed, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. ARRIS may make improvements or changes in the
product(s) described in this manual at any time.
The capabilities, system requirements and/or compatibility with third-party products described herein are subject to
change without notice.
ARRIS C4® Cable Modem Termination System (CMTS)
ARRIS C4® Cable Modem Termination System
ARRIS C4c™ Cable Modem Termination System
ARRIS DOCSIS® 3.0 C4® CMTS

The capabilities, system requirements and/or compatibility with third-party products described herein are subject to
change without notice. ARRIS, the ARRIS logo, Auspice®, BigBand Networks®, BigBand Networks and Design®, BME®, BME
50®, BMR®, BMR100®, BMR1200®, C3™, C4®, C4c™, C-COR®, CHP Max5000®, ConvergeMedia™, Cornerstone®,
CORWave™, CXM™, D5®, Digicon®, E6000®, ENCORE®, EventAssure™, Flex Max®, FTTMax™, HEMi®, MONARCH®, MOXI®,
n5®, nABLE®, nVision®, OpsLogic®, OpsLogic® Service Visibility Portal™, Opti Max™, PLEXiS®, PowerSense™, QUARTET®,
Rateshaping®, Regal®, ServAssure™, Service Visibility Portal™, TeleWire Supply®, TLX®, Touchstone®, Trans Max™, VIPr™,
VSM™, and WorkAssure™ are all trademarks of ARRIS Enterprises, Inc. Other trademarks and trade names may be used in
this document to refer to either the entities claiming the marks and the names of their products. ARRIS disclaims
proprietary interest in the marks and names of others. Copyright 2016 ARRIS Enterprises, Inc. —All Rights Reserved.
Reproduction in any manner whatsoever without the express written permission of ARRIS Enterprises, Inc. is strictly
forbidden. For more information, contact ARRIS.
Metaswitch® is a registered trademark of Metaswitch Networks in the US and other countries.
Portions of the IPDR software were authored by IPDR.org.
The Regular Expression Source Code and its use is covered by the GNU LESSER GENERAL PUBLIC LICENSE version 3, June
29, 2007.
This product includes software developed by the Apache Software Foundation, http://www.apache.org/ .
Patent Information
The ARRIS C4® Cable Modem Termination System (CMTS) and E6000® Converged Edge Router are protected by U.S. and
international patents including:
6,449,249
6,457,978
6,636,482
6,637,033
6,662,368
6,769,132
6,898,182
7,002,914
7,047,553
7,272,144
7,480,237
7,480,241
7,570,127
7,593,495
7,606,870
7,660,250
7,698,461
7,701,956
7,953,144
7,958,260
7,974,303
8,136,141
8,218,438
8,332,911
8,548,457
8,819,606
8,861,366
8,923,319
8,959,408
8,971,184
8,995,460
9,065,735
9,088,358
Additional ARRIS Enterprises, Inc. patents pending. Copyright (c) 2002-2016 ARRIS Enterprises, Inc. —All Rights Reserved.

Table 1. Revision History
Revision
Date
Reason for Change
Rel. 8.3 Preliminary, Issue 1.0
August 2015
Meet Field Soak Ready (FSR) requirements.
Rel. 8.3 Standard, Issue 1.0
November 2016
Reissued for General Availability.

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Table of Contents
1. Introduction ........................................................................................................................................... 45
Overview ............................................................................................................................................................. 45
Intended Audience.............................................................................................................................................. 45
Prerequisite Skill and Knowledge ....................................................................................................................... 45
Purpose ............................................................................................................................................................... 46
Textual Conventions ........................................................................................................................................... 46
Admonishments.................................................................................................................................................. 47
2. C4/C4c CMTS Features ............................................................................................................................ 48
DOCSIS 2.0 Compliance....................................................................................................................................... 48
DOCSIS 3.0 Compliance....................................................................................................................................... 49
Fault Detection and Recovery............................................................................................................................. 50
Interfaces and Protocols ..................................................................................................................................... 50
Security Features ................................................................................................................................................ 50
Baseline Features and Early Releases................................................................................................................. 51
Release 3.0 Features .................................................................................................................................. 51
Release 3.3 Features .................................................................................................................................. 52
Release 4.0 Features .................................................................................................................................. 52
Release 4.1 Features .................................................................................................................................. 54
Release 4.2 Features .................................................................................................................................. 54
Release 5.0 Features .................................................................................................................................. 55
Release 5.1.x Features ............................................................................................................................... 57
Release 7.0.x Features ............................................................................................................................... 59
Release 7.1.x Features ............................................................................................................................... 59
Release 7.2.x Features ............................................................................................................................... 60

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Release 7.3.x Features................................................................................................................................ 60
Release 7.4.x Features................................................................................................................................ 62
Release 8.0.x Features................................................................................................................................ 63
Release 8.1.x Features................................................................................................................................ 64
Release 8.1.5 -- Small Feature Release ...................................................................................................... 65
Release 8.2 Features .................................................................................................................................. 66
Release 8.2.5 Features ............................................................................................................................... 69
Release 8.3 Features .................................................................................................................................. 71
3. C4/C4c CMTS Specifications ....................................................................................................................74
Overview ............................................................................................................................................................. 74
Network Diagram................................................................................................................................................ 75
C4 CMTS .............................................................................................................................................................. 76
C4c CMTS ............................................................................................................................................................ 76
Slot Numbering Scheme............................................................................................................................. 77
Limited Support for the 2Dx12U CAM in the C4c CMTS ............................................................................ 78
C4/C4c CMTS Specifications................................................................................................................................ 78
Physical....................................................................................................................................................... 78
Power ......................................................................................................................................................... 79
Safety.......................................................................................................................................................... 79
Electromagnetic Compatibility................................................................................................................... 80
Environmental............................................................................................................................................80
WEEE (Waste Electrical and Electronic Equipment) .................................................................................. 81
RF Electrical Specifications..................................................................................................................................82
Network Interfaces..................................................................................................................................... 84
Scalability ............................................................................................................................................................ 85
C4 CMTS Chassis.........................................................................................................................................85
C4c CMTS Chassis ....................................................................................................................................... 86

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VoIP Call Capacities............................................................................................................................................. 87
4. C4 CMTS General Installation Requirements ........................................................................................... 91
Overview ............................................................................................................................................................. 92
Safety Precautions .............................................................................................................................................. 92
Lifting Safety............................................................................................................................................... 92
Electrical Equipment Guidelines ......................................................................................................................... 94
Electrostatic Discharge (ESD).............................................................................................................................. 94
C4 CMTS Installation Checklist............................................................................................................................ 95
Tools Required ........................................................................................................................................... 96
Torque Values ............................................................................................................................................ 96
Items Not Supplied..................................................................................................................................... 97
Unpacking the C4 CMTS...................................................................................................................................... 97
Module Protection ..................................................................................................................................... 99
Installation Considerations ................................................................................................................................. 99
Rack Mounting ........................................................................................................................................... 99
Power Requirements................................................................................................................................ 100
Cooling Requirements.............................................................................................................................. 100
Rack Mounting the C4 CMTS ............................................................................................................................ 102
Grounding the Chassis ............................................................................................................................. 103
Main Hardware Components ........................................................................................................................... 104
Module Types and Chassis Slots—Front View ......................................................................................... 105
Chassis —Rear View ................................................................................................................................ 106
Installing Modules in the C4 CMTS ................................................................................................................... 108
Module Installation Overview.................................................................................................................. 108
Installation Diagram................................................................................................................................. 109
Ejector Levers........................................................................................................................................... 110
Fan Trays ........................................................................................................................................................... 110

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High Speed Fan Trays ............................................................................................................................... 111
Air Filter.................................................................................................................................................... 112
Power Conditioning Module and Cabling .........................................................................................................113
Power Requirements................................................................................................................................ 114
Front Panel Access ...................................................................................................................................116
Power Protection Description ..................................................................................................................118
Chassis Maintenance ........................................................................................................................................123
Cleaning the Chassis.................................................................................................................................123
Air Filters ..................................................................................................................................................123
Replacing the C4 CMTS Chassis.........................................................................................................................123
5. C4c CMTS Installation Requirements ..................................................................................................... 125
Safety Precautions ............................................................................................................................................ 126
Lifting Safety.............................................................................................................................................126
Electrical Equipment Guidelines ..............................................................................................................128
Electrostatic Discharge (ESD) ............................................................................................................................ 129
Installation Checklist .........................................................................................................................................130
Tools Required .........................................................................................................................................131
Torque Values ..........................................................................................................................................131
Items Not Supplied...................................................................................................................................131
Unpacking the C4c CMTS .................................................................................................................................. 132
Module Protection ...................................................................................................................................133
Installation Considerations ...............................................................................................................................134
Rack Mounting .........................................................................................................................................134
Power Requirements................................................................................................................................ 135
Cooling Requirements.............................................................................................................................. 135
Rack Mounting the C4c CMTS...........................................................................................................................137
Grounding the Chassis.............................................................................................................................. 138

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Main Hardware Components ........................................................................................................................... 139
Chassis Configuration............................................................................................................................... 139
Module Types and Chassis Slots—Front View ......................................................................................... 140
Chassis —Rear View ................................................................................................................................ 143
Installing Modules in the C4c CMTS......................................................................................................... 144
Fan Tray Module ...................................................................................................................................... 147
Power Module and Cabling............................................................................................................................... 151
Power Requirements................................................................................................................................ 154
Front Panel Access ................................................................................................................................... 158
Power Protection Description........................................................................................................................... 159
A and B Power Feeds................................................................................................................................ 159
Internal Branch Protection....................................................................................................................... 160
Automatic Card Recovery for DC Voltage ................................................................................................ 161
C4c CMTS Chassis Maintenance ....................................................................................................................... 162
Cleaning the Chassis................................................................................................................................. 162
Air Filters .................................................................................................................................................. 162
Replacing the C4c CMTS Chassis....................................................................................................................... 162
6. System Control Module (SCM) .............................................................................................................. 165
SCM Overview................................................................................................................................................... 165
SCM/SCM II Ethernet Interfaces .............................................................................................................. 167
SCM 3 Ethernet Interfaces ....................................................................................................................... 167
Installation................................................................................................................................................ 172
SCM Replacement............................................................................................................................................. 177
SCM Upgrade to 1GB RAM (SCM II EM)............................................................................................................ 181
Virtual System Controller......................................................................................................................... 186
SCM II EM (U).................................................................................................................................................... 187
SCM 3 ................................................................................................................................................................ 187

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SCM 3 Operational Interaction ................................................................................................................ 188
Out-of-Band Management on the SCM 3 ................................................................................................188
Upgrading a C4 CMTS to an SCM 3 ..........................................................................................................189
Compact Flash...................................................................................................................................................195
Physical Dimensions .................................................................................................................................195
Replacing the Compact Flash ................................................................................................................... 196
Compact Flash Disk Partitions..................................................................................................................200
File System Administration ......................................................................................................................204
File Transfers ............................................................................................................................................206
7. Router Control Module (RCM)............................................................................................................... 208
RCM Overview...................................................................................................................................................208
Primary Software Functions..............................................................................................................................210
RCM Hardware.................................................................................................................................................. 210
LED Status Indicators................................................................................................................................211
RCM Crossover Connector .......................................................................................................................211
SFP and XFP Ethernet Interfaces ..............................................................................................................214
Fiber Optic SFP and XFP Modules ............................................................................................................214
8. Downstream Cable Access Modules (DCAMs)........................................................................................ 219
Overview ...........................................................................................................................................................219
16D Cable Access Module (16D CAM) ..............................................................................................................219
Primary Software Function ...................................................................................................................... 222
Downstream Test Port on 16D CAM Faceplate ....................................................................................... 223
LED Status................................................................................................................................................. 224
Downstream Interleaver Settings ............................................................................................................ 224
QAM Modulation Order and Port Requirements.....................................................................................225
Spectrum Windows and Downstream Frequency Spacing ......................................................................225

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Restrictions............................................................................................................................................... 227
QAM Output Power ................................................................................................................................. 227
16D Physical Interface Cards (PICs).......................................................................................................... 228
XD Cable Access Module (XD CAM) .................................................................................................................. 229
Types of Downstream CAMs.................................................................................................................... 230
Operational Considerations for the XD CAM ........................................................................................... 230
RF Power Monitoring and Recovery ........................................................................................................ 240
Physical Interface Cards (PICs) ................................................................................................................. 241
Downstream Parameters.................................................................................................................................. 242
Annex ....................................................................................................................................................... 242
Downstream Frequency Range................................................................................................................ 248
XD CAM Field Software Upgrade ...................................................................................................................... 249
Overview .................................................................................................................................................. 249
Operational Concerns .............................................................................................................................. 250
Sample XD CAM Provisioning................................................................................................................... 251
Sample Script for 32D CAM Provisioning ................................................................................................. 256
9. Upstream Cable Access Modules (UCAMs) ............................................................................................ 267
Overview ........................................................................................................................................................... 268
Guidelines................................................................................................................................................. 268
12U Cable Access Module (12U CAM).............................................................................................................. 268
Primary Software Function ...................................................................................................................... 271
LED Status................................................................................................................................................. 271
Upstream Receive Power Levels .............................................................................................................. 272
Basic Command Set for Bringing Up a 12U CAM.............................................................................................. 274
24U Cable Access Module (24U CAM).............................................................................................................. 277
Primary Software Function ...................................................................................................................... 279
LED Status................................................................................................................................................. 279

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Shuffle Network .......................................................................................................................................280
Rules and Restrictions for 12U/24U CAM Configuration.................................................................................. 281
Slot Provisioning.......................................................................................................................................281
Annex........................................................................................................................................................282
Upstream (US) Channel to Physical Connector Mapping.........................................................................282
24U CAM Upstream Power Level Groups .........................................................................................................282
Default Admin States ...............................................................................................................................286
Basic Command Set for Bringing Up a 24U CAM ..............................................................................................286
Measuring SNR in the 12U/24U CAM ............................................................................................................... 289
Channel SNR Calculations.........................................................................................................................289
Modem SNR Calculation........................................................................................................................... 291
Modulation Profiles ..........................................................................................................................................292
Default Modulation Profile ...................................................................................................................... 292
Valid Center Frequencies ......................................................................................................................... 294
Setting the Rx Power Levels .....................................................................................................................295
Adjusting Channel Settings in Response to Increased CM Scaling ...................................................................298
Explanation of Upstream Parameters............................................................................................................... 299
Modulation Profile Values........................................................................................................................ 300
12U/24U Ingress Noise Cancellation........................................................................................................308
Notes on DOCSIS 3.0 Upstream Frequency Range...................................................................................308
Modulation Profiles: Default and User-defined................................................................................................309
Displaying Modulation Profiles ................................................................................................................ 311
Optimizing a Modulation Profile....................................................................................................................... 311
Noise and SNR versus Modulation Symbol Rate......................................................................................312
10. Control Complex Redundancy ............................................................................................................... 322
Overview ...........................................................................................................................................................322
Add Control Complex ........................................................................................................................................323

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11. Basic Bring-up Procedure for the C4 CMTS............................................................................................. 325
Introduction ...................................................................................................................................................... 325
Chassis Installation and Powering............................................................................................................ 326
HFC Network Connectivity ....................................................................................................................... 326
IP Network Plan........................................................................................................................................ 328
Configuration of Back Office Servers ....................................................................................................... 328
1. Install Cards, Rear PICs, Filler Panels, PCMs, and Fans ........................................................................ 331
2. Set Up Console Cable ........................................................................................................................... 332
3. Power Up the Chassis........................................................................................................................... 333
4. Configure Slots ..................................................................................................................................... 333
5. Configure RCM Ethernet Connections ................................................................................................. 333
6. Configure MAC Domains ...................................................................................................................... 333
7. Configure Downstream Parameters .................................................................................................... 334
8. Configure Upstream Parameters ......................................................................................................... 335
9. Configure Fiber Node and Topology .................................................................................................... 337
10. Configure a Dynamic Bonding Group................................................................................................. 337
11. Configure RCC Management.............................................................................................................. 337
12. Local Authentication .......................................................................................................................... 338
13. Managing the C4 CMTS...................................................................................................................... 338
14. Configure the SNMP........................................................................................................................... 339
15. Configure Clock .................................................................................................................................. 340
16. Save the Configuration....................................................................................................................... 340
Verification Steps.............................................................................................................................................. 340
17. Cable CAMs and RCM......................................................................................................................... 340
18. Configure/Verify Back Office Systems ............................................................................................... 341
19. Verify the C4 CMTS Configuration ..................................................................................................... 341
20. Verify Modem Registration................................................................................................................ 343

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IP Address Prefixes and Subnets.......................................................................................................................348
12. Basic Bring-up Procedure for a C4c CMTS .............................................................................................. 351
Introduction ......................................................................................................................................................351
Before You Begin...............................................................................................................................................352
Chassis Installation and Powering............................................................................................................ 352
HFC Network Connectivity .......................................................................................................................352
IP Network Plan........................................................................................................................................ 354
Configuration of Provisioning and Back Office Servers............................................................................354
Bring-up Procedures .........................................................................................................................................355
Install Front Cards, PICs, Filler Panels, PMs, and Fan Tray Module .........................................................356
Set Up Console Cable ...............................................................................................................................357
Power Up the Chassis...............................................................................................................................358
Basic Bring-up Procedure..................................................................................................................................358
Configure Slots ......................................................................................................................................... 358
Configure RCM Ethernet Connections .....................................................................................................358
Configure MAC Domains ..........................................................................................................................359
Configure Downstream Parameters.........................................................................................................359
Configure Upstream Parameters .............................................................................................................360
Configure Fiber Node and Topology ........................................................................................................ 361
Configure Bonding Group Management.................................................................................................. 362
Configure RCC Management....................................................................................................................362
Save the Configuration.............................................................................................................................363
Local Authentication ................................................................................................................................ 363
Managing the CMTS .................................................................................................................................364
In-band Management...............................................................................................................................364
Out-of-band Management ....................................................................................................................... 364
Configure the SNMP................................................................................................................................. 365

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Configure Clock ........................................................................................................................................ 366
Verification Steps.............................................................................................................................................. 366
Cable CAMs and RCM............................................................................................................................... 366
Configure/Verify Back Office Systems ..................................................................................................... 366
Verify the CMTS Configuration ................................................................................................................ 366
Verify Modem Registration...................................................................................................................... 370
IPv6 Configuration (Optional) ........................................................................................................................... 372
IP Address Prefixes and Subnets.............................................................................................................. 373
13. CAM Sparing......................................................................................................................................... 375
FlexCAM™ Hitless CAM Sparing........................................................................................................................ 375
Benefits of Hitless CAM Sparing............................................................................................................... 376
CAM Sparing PIC LEDs .............................................................................................................................. 376
Definitions ................................................................................................................................................ 376
Size of Hitless CAM Spare-groups ............................................................................................................ 376
Signal Loss during Failover ....................................................................................................................... 377
Guidelines for CAM Spare Groups .................................................................................................................... 377
Guidelines for Upstream Spare Groups ................................................................................................... 378
Guidelines for Downstream Spare Groups .............................................................................................. 378
Calculating Signal Loss During Failover .................................................................................................... 378
Configuration Example...................................................................................................................................... 378
Create CAM Spare Groups ....................................................................................................................... 382
Fail Back Manually.................................................................................................................................... 383
Deleting a CAM Spare-group ............................................................................................................................ 384
14. Cable-side Configuration....................................................................................................................... 386
Overview ........................................................................................................................................................... 386
MAC Domains ................................................................................................................................................... 387

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DOCSIS Functions .....................................................................................................................................387
DOCSIS 3 Terminology.............................................................................................................................. 388
Specifications ...........................................................................................................................................391
MAC Domain Configuration .....................................................................................................................391
Upstream to Downstream Channel Association...............................................................................................405
Upstream Channel Descriptor Messages .................................................................................................405
Supervision............................................................................................................................................... 405
Cable Plant Topology and Fiber Nodes .............................................................................................................411
Fiber Node Configuration.........................................................................................................................412
Channel to Fiber Node Configuration ......................................................................................................413
Cable Modem Timing, Supervision, and Messaging ................................................................................ 415
Service Group Determination and Display........................................................................................................416
MAC Domain ............................................................................................................................................416
Channel Sets......................................................................................................................................................418
Show CLI Commands ................................................................................................................................418
Receive Channel Configurations and Bonding Groups .....................................................................................427
15. Interface IP Configuration ..................................................................................................................... 428
Overview ...........................................................................................................................................................428
Subinterfaces (Multiple VRIs per VRF) for IPv4.................................................................................................428
Rules of Operation and Guidelines for Subinterfaces..............................................................................429
Network ACLs ...........................................................................................................................................430
Interface Configuration.....................................................................................................................................431
Common Interface Configuring Commands.............................................................................................431
Monitoring Interfaces ..............................................................................................................................433
802.1Q VLAN Tagging (Q-tags).......................................................................................................................... 435
One Q-tag per Network Interface ............................................................................................................437
Loopback Interfaces for Routing Protocols....................................................................................................... 438

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Characteristics of the Loopback Interface ............................................................................................... 438
Configuring IP Static Routes.............................................................................................................................. 441
Multiple VRFs .................................................................................................................................................... 441
Overview .................................................................................................................................................. 441
Overview of the Sample Procedure ......................................................................................................... 443
Example of Setting Up Five VRFs.............................................................................................................. 444
Link Aggregation ............................................................................................................................................... 446
Provisioning.............................................................................................................................................. 446
LACP Forwarding ...................................................................................................................................... 447
Feature Interactions................................................................................................................................. 448
Link Overload Protection ......................................................................................................................... 448
BSoD ......................................................................................................................................................... 448
Command Line Interface.......................................................................................................................... 448
Configuring Link Aggregation................................................................................................................... 455
16. Dynamic Routing Protocols ................................................................................................................... 457
Overview of Dynamic Routing .......................................................................................................................... 457
Border Gateway Protocol ................................................................................................................................. 458
BGP Version 4........................................................................................................................................... 458
Intermediate System-Intermediate System ..................................................................................................... 468
Overview .................................................................................................................................................. 468
CLNP Addressing/NSAP Address Format ................................................................................................. 469
IS-IS Network Topology, Unique Level 1 Areas........................................................................................ 470
Dynamic Hostname Support .................................................................................................................... 472
IS-IS Network Topology —Multi-homing ................................................................................................ 473
Packet Flow Between IS-IS Systems......................................................................................................... 473
Designated Intermediate System (DIS) and Reliable Flooding of LSPs .................................................... 474
IS-IS Point-to-Point................................................................................................................................... 475

STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 20
Multiple Topology IS-IS .....................................................................................................................................478
Multiple Topology IS-IS Overview ............................................................................................................478
Overcoming Single SPF Limitation............................................................................................................478
Adjacencies...............................................................................................................................................479
Broadcast Interface Adjacencies..............................................................................................................480
Advertising MT Reachable Intermediate Systems in LSPs .......................................................................480
MT IP Forwarding .....................................................................................................................................480
Configuring MT IS-IS on the C4/c CMTS................................................................................................... 482
Enable MT IS-IS.........................................................................................................................................482
Disable MT IS-IS........................................................................................................................................482
Modify the Default Metric .......................................................................................................................483
Sample Configuration............................................................................................................................... 483
Example Show Commands .......................................................................................................................484
CLI Commands for ISIS..............................................................................................................................487
Open Shortest Path First Version 2...................................................................................................................495
Link State Routing Protocol Description ..................................................................................................495
Routing Metrics........................................................................................................................................ 495
Equal Cost MultiPath Routes....................................................................................................................496
Configuring OSPF......................................................................................................................................496
Enable OSPF..............................................................................................................................................497
Disable OSPF for an Interface................................................................................................................... 499
Disable OSPF on the C4/c CMTS...............................................................................................................499
CLI Commands for OSPF........................................................................................................................... 500
Open Shortest Path First Version 3...................................................................................................................502
Comparison of OSPFv3 and OSPFv2.........................................................................................................503
Discovering Neighboring Routers............................................................................................................. 503
Hello Packets ............................................................................................................................................504