Alpha CMD-N Arris SG4000 Technical Manual

CMD-N Arris SG4000

Technical Manual

Effective: March 2016

Safety Notes

Alpha considers customer safety and satisfaction its most important priority. To reduce the risk of

injury or death and to ensure continual safe operation of this product, certain information is presented

differently in this manual. Alpha tries to adhere to ANSI Z535 and encourages special attention and

care to information presented in the following manner:

The following sections contain important safety information that must be followed during the

installation and maintenance of the equipment and batteries. Read all of the instructions before

installing or operating the equipment, and save this manual for future reference.

There may be multiple warnings associated with the call out. Example:

ATTENTION provides specic regulatory/code requirements that may affect the placement of equip-

ment and /or installation procedures.

ATTENTION:

NOTICE provides additional information to help complete a specic task or procedure.

NOTICE:

ELECTRICAL HAZARD WARNING provides electrical safety information to PREVENT

INJURY OR DEATH to the technician or user.

WARNING! ELECTRICAL HAZARD

FUMES HAZARD WARNING provides fumes safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! FUMES HAZARD

FIRE HAZARD WARNING provides ammability safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! FIRE HAZARD

This WARNING provides safety information for both Electrical AND Fire Hazards

WARNING! ELECTRICAL & FIRE HAZARD

CAUTION provides safety information intended to PREVENT DAMAGE to material or

equipment.

CAUTION!

GENERAL HAZARD WARNING provides safety information to PREVENT INJURY OR

DEATH to the technician or user.

WARNING! GENERAL HAZARD

3050-0188, Rev. J (03/2016)

CMD-N Arris SG4000

Technical Manual

050-0188, Rev. J

Effective Date: March 2016

©

2016 by Alpha Technologies, Inc.

Disclaimer

Images contained in this manual are for illustrative purposes only. These images may not match your

installation.

Operator is cautioned to review the drawings and illustrations contained in this manual before

proceeding. If there are questions regarding the safe operation of this powering system, please

contact Alpha Technologies or your nearest Alpha representative.

Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies,

generators, batteries or other hardware if used or operated in any manner or subject to any condition

not consistent with its intended purpose or is installed or operated in an unapproved manner or

improperly maintained.

Contact Information

Sales information and customer service in USA

(7AM to 5PM, Pacic Time):

Complete technical support in USA

(7AM to 5PM, Pacic Time or 24/7 emergency support):

Website:

866 944 1482

www.alpha.com

www.cheetahtech.com

412 923 3486

4 050-0188, Rev. J (03/2016)

Table of Contents

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.1 CMD-N Transponder Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.2 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.3 Contact Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.0 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1 Connections Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

2.3 CMD-N Transponder Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

3.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1 Provisioning the Transponders in the Network . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Your Network Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.3 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.4 Cable Modem Conguration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.5 Installing the CMD-N Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SG4000 Node Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

MBN100/200 Node Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

BTN100 Modular Optical Node Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.6 Transponder Conguration Using the sg4000NodeDiscoveryGroup MIB . . . . . . . . . . 25

3.7 Viewing and Overriding the BPIM Switch Setting . . . . . . . . . . . . . . . . . . . . . . 26

3.8 Checking the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.0 Provisioning the SNMP Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.1 MIB Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.2 Acquiring the Transponders by the SNMP Manager . . . . . . . . . . . . . . . . . . . . . 29

5.0 Using the Craft Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2 Web Page Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.3 Console Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.0 CMD-N Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.2 Conguring the SYSNAME and SYSLOCATION OIDs. . . . . . . . . . . . . . . . . . . . 34

Conguration Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Choosing the Appropriate Device Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.3 Status Page for Software Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.4 Status Page for Connection Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6.5 Status Page for the SNMP Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

6.6 HMS Fiber Node Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

6.7 HSIA Diagnostics Page: Ping Command . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Controlling the Ping Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Simultaneous Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6.8 HSIA Diagnostics Page: Traceroute Command . . . . . . . . . . . . . . . . . . . . . . . 44

Input Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Controlling the Traceroute Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Test Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Simultaneous Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5050-0188, Rev. J (03/2016)

6.9 RF Constellation Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Downstream Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Interpreting QAM Constellation Data by Visual Inspection . . . . . . . . . . . . . . . . . . 47

6.10 MTA Status Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

6.11 MTA DHCP Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

6.12 MTA Quality of Service (QoS) Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.13 MTA Provisioning Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

6.14 MTA Event Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

7.0 Cable Pinout Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.1 Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8.0 Upgrading the CMD-N Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table of Contents, Continued

6 050-0188, Rev. J (03/2016)

Figures

Fig. 1-1, CMD-N Transponder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Fig. 2-1, CMD-N Transponder Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Fig. 3-1, Typical Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fig. 3-2, Cable Modem Conguration File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Fig. 3-3, Fiber Node Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Fig. 3-4, Slot and Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Fig. 3-5, Mounting Screw Access Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fig. 3-6, RF Cable Attached to RF Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fig. 3-7, RF Cable Attached to SM Test Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Fig. 3-8, Fiber Node Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Fig. 3-9, Slot and Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Fig. 3-10, Mounting Screw Access Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Fig. 3-11, RF Cable Attached to Injection Point . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Fig. 3-12, RF Cable Attached to SM Test Point . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Fig. 3-13, Fiber Node Interface Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fig. 3-14, Slot and Interface Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fig. 3-15, Mounting Screw Access Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fig. 3-16, RF Cable Attached to RF Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fig. 3-17, RF Cable Attached to SM Test Point on the Return Conguration Board . . . . . . . . . 23

Fig. 3-18, RF Cable Attached to SM Test Point on Receiver Optical Module . . . . . . . . . . . . 24

Fig. 3-19, The CMD-N Transponder LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Fig. 5-1, Console Main Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Fig. 5-2, Console Prompt Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Fig. 5-3, Console HMS Prompt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Fig. 5-4, Console Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Fig. 6-1, Conguration Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Fig. 6-2, Status Page for Software Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Fig. 6-3, Status Page for Connection Information . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Fig. 6-4, Status Page for the SNMP Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Fig. 6-5, SG4000 Fiber Node Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Fig. 6-6, MBN200 Fiber Node Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Fig. 6-7, BTN100 Fiber Node Data Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Fig. 6-8, HSIA Diagnostics Page: Ping Command . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Fig. 6-9, Ping Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Fig. 6-10, HSIA Diagnostics Page: Traceroute Command . . . . . . . . . . . . . . . . . . . . . . 44

Fig. 6-11, Traceroute Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Fig. 6-12, Constellation Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Fig. 6-13, Sample QAM Constellation — Normal Centered Dots (Good Sound Quality) . . . . . . 48

Fig. 6-14, Sample QAM Constellation — Fuzzy (Low CNR and/or Low MER) . . . . . . . . . . . 48

Fig. 6-15, Sample QAM Constellation — “Doughnuts” (Coherent Interference) . . . . . . . . . . . 49

Fig. 6-16, Sample QAM Constellation — Gaussian Noise . . . . . . . . . . . . . . . . . . . . . . 49

Fig. 6-17, Sample QAM Constellation — Circular Smear (Phase Noise) . . . . . . . . . . . . . . 50

Fig. 6-18, Sample QAM Constellation — Corners Squeezed to Center (Gain Compression) . . . . 50

Fig. 6-19, Sample QAM Constellation — Rectangular vs. Square (I-Q Imbalance) . . . . . . . . . 51

Fig. 6-20, Sample QAM Constellation — Twisted or Skewed (Quadrature Distortion). . . . . . . . 51

Fig. 6-21, MTA Status Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Fig. 6-22, MTA DHCP Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Fig. 6-23, MTA Quality of Service (QoS) Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7050-0188, Rev. J (03/2016)

Tables

Table 1-1, CMD-N Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 2-1, Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Table 2-2, CMD-N Transponder Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Table 3-1, Network Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 3-2, Status Monitoring Slot Number Cross Reference. . . . . . . . . . . . . . . . . . . . . 21

Table 3-3, LED Status Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 4-1, ANSI / SCTE Management Information Base (MIB) Files . . . . . . . . . . . . . . . . 28

Table 4-2, Arris Management Information Base (MIB) Files . . . . . . . . . . . . . . . . . . . . . 28

Table 5-1, OIDs for Usernames, Passwords, Telnet Access for Console Access . . . . . . . . . . 30

Table 5-2, TelnetIpStackInterfaces OID Values and Descriptions . . . . . . . . . . . . . . . . . . 31

Table 5-3, Telnet Access Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 5-4, Commands Available in the HMS Section of Console Mode . . . . . . . . . . . . . . . 33

Table 6-1, OIDs for Port Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 6-2, OIDs for Usernames and Passwords for Web Interface Access . . . . . . . . . . . . . 34

Table 6-3, Status Monitoring Slot Number Cross Reference. . . . . . . . . . . . . . . . . . . . . 41

Table 6-4, Input Parameters for the Ping Command . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 6-5, Control Buttons on the Ping Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 6-6, Input Parameters for the Traceroute Command . . . . . . . . . . . . . . . . . . . . . 44

Table 6-7, Control Buttons on the Traceroute Screen . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 6-8, QAM Constellation Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Table 7-1, Pin Number Conguration Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figures, Continued

Fig. 6-24, MTA Provisioning Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Fig. 6-25, MTA Event Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

8 050-0188, Rev. J (03/2016)

1.0 Introduction

1.1 CMD-N Transponder Overview

The CMD-N transponder provides the ability to manage ber nodes through an existing cable modem infrastructure.

Contact an Alpha Technical Support Representative for a complete listing of supported ber nodes.

The transponder transmits data to a management system over the network’s existing DOCSIS infrastructure, using

standard SNMP (Simple Network Management Protocol). Status monitoring information is compatible with ANSI/SCTE

HMS standards.

This CMD-N transponder can be installed in either an SG4000, MBN100/200 node, or a BTN100 node. The transponder

will query the EPIM or VPIM module in the Node to determine the node type and will congure itself appropriately. If there

is no EPIM or VPIM for the transponder to query, it will default to operating in SG4000 mode.

Fig. 1-1, CMD-N Transponder

The CMD-N transponder:

• Uses ANSI/SCTE HMS standards

• Measures analog or receives digital SCTE/HMS data from ber nodes

• Can be network managed through an existing DOCSIS infrastructure

To the cable network infrastructure, the CMD-N transponder appears as a DOCSIS 2.0 cable modem. The transponder

is assigned an IP address like any other DOCSIS device on the DOCSIS network. The assigned IP address is used to

access the HMS status monitoring data via SNMP and the HMS MIBs.

For complete DOCSIS specications, see Cable Laboratories specications (Cable Labs Public DOCSIS SPECS) at

www.cablelabs.com.

Node type discovery can be controlled or overriden via SNMP. For more information, see the section titled

“Transponder Conguration Using the sg4000NodeDiscoveryGroup MIB”

NOTICE:

1.0 Introduction, continued

9050-0188, Rev. J (03/2016)

1.2 Parts List

Table 1-1 lists the transponder and any other items that are available as an option. For damage or discrepancies, please

contact an Alpha Technical Support representative.

Table 1-1, CMD-N Parts List

1.3 Contact Information

For technical issues related to Motorola or Arris nodes, customers should call Arris Technical Support at:

• Domestic — 1-866-36-ARRIS (1-866-362-7747)

• International — +1-678-473-2907

CMD-N Parts List

Description Part Number Quantity

CMD-N Transponder 66900-0665 1

10 050-0188, Rev. J (03/2016)

2.0 Connections

2.1 Connections Overview

The CMD-N transponder includes six status LEDs, the Craft* port (which is a standard RJ-45 Ethernet connector), an

optical tamper sensor, RF communication cables, and a node interface connector. The transponder receives its power and

performs communications all via the node interface connector. The locations of these items are shown in Figure 2.

* The Craft port provides local access to the transponder. However, it is important to note that the Craft port is a fully

functional standard Ethernet port capable of providing all the functionality of any standard Ethernet connection. DOCSIS

conguration can affect the the Craft port’s addressing and network connection.

Fig. 2-1, CMD-N Transponder Connections

Tamper Sensor

Craft Port

LEDs

Label with

Transponder

Serial Number

2.0 Connections, continued

11050-0188, Rev. J (03/2016)

2.2 Connector Summary

Table 2-1, Connector Summary

2.3 CMD-N Transponder Specications

Table 2-2, CMD-N Transponder Specications

Connector Summary

Connector Description

DS RF Cable

The Forward (Downstream) RF cable is the physical connection to the forward RF -20dB test point of

an SG4000-RF module or the -20dB Status Monitor Output injection point of the MBN100/200.

US RF Cable

The Return (Upstream) RF cable is the physical connection to the “SM” injection point connector on

the Return Conguration Board of an SG4000 or the Transmitter Status Monitor injection point of the

MBN100/200.

Craft

The Craft port provides a local connection to the transponder. The Craft port is a fully functional

standard Ethernet port capable of providing all the functionality of any standard Ethernet connection.

Node Interface The Node Interface is the physical connection point at which the transponder attaches to the node.

Tamper Sensor The Tamper Sensor provides an indication of physical tampering (opening of the node enclosure).

LED Indicators

The CMD-N transponder includes six green LEDs that indicate transponder status: PWR, DS, US,

Online, Elink, and Status.

CMD-N Transponder Specications

Parameter Specication

General

DOCSIS Version 2.0

HMS Monitoring Protocol SNMP v1

DOCSIS Monitoring Protocol SNMP v1, v2, v3

RF Interface Internal

RF Internal Padding 18dB Downstream and 15dB Upstream

Ethernet Interface RJ45

Operating Temperature

–40°C to +75°C

Humidity 10% to 90% (non-condensing)

EMI/EMC FCC Part 15 Class A, CE EN50022 Class A

RF Transmit/Receive

Tx Frequency Range 5 to 42 MHz

Tx Output Power +8 to +58 dBmV

Rx Frequency Range 88 MHz to 860 MHz

Rx Input Level –15 to +15 dBmV

Channel Bandwidth 6 MHz to 8 MHz

Part Numbers

Transponder 66900-0665

12 050-0188, Rev. J (03/2016)

3.0 Installation

Cable modem infrastructures are likely to have unique characteristics, therefore Alpha Technologies strongly recommends

completely installing one transponder and making it operational before deploying the entire system throughout your

network.

Installing the transponders for operation consists of the following steps:

• Provisioning the transponders in the network

• Adding conguration data to the cable modem conguration le

• Installing the transponder

• Powering the transponder and checking the LEDs for status

3.1 Provisioning the Transponders in the Network

Before installing CMD-N transponders, the transponder must be provisioned in the network in order for the network to

recognize, discover, and communicate with the transponders when they are powered up. The following graphic shows a

typical network.

Fig. 3-1, Typical Network

The transponders must be received into the inventory like other cable modems to allow their MAC addresses to be

provisioned into the billing system.

NOTICE:

Node type discovery can be controlled or overriden via SNMP. For more information, see the section titled

“Transponder Conguration Using the sg4000NodeDiscoveryGroup MIB”

NOTICE:

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13050-0188, Rev. J (03/2016)

3.2 Your Network Information

The following worksheet will assist in gathering the network information needed throughout the deployment process.

Table 3-1, Network Worksheet

The deployment of an Alpha DOCSIS-based transponder is similar to provisioning a standard subscriber cable modem

and MTA with certain exceptions owing to the transponder being a test device. For instance, care must be used when

provisioning, such that it is not invoiced in the billing system or mistakenly blocked. Cable operators will want to adapt

the deployment strategy to t their unique operational landscape. The introduction of a new device type in the DOCSIS

network touches several OSS systems and disciplines whose participation is necessary for a successful and timely

deployment.

3.3 Security

Different security methods are used to ensure network integrity. Some common issues are:

• A subscriber account (where the transponder is the subscriber) may be required for each transponder

• The transponder’s MAC address may have to be pre-loaded into the CMTS

• MAC ltering may have to be modied to allow MAC addresses starting with 00:26:97:xx:xx:xx to be registered

• For SNMP access, UDP ports 161 and 162 must not be blocked

• Firewalls must allow communications between the cable modem and the various servers.

• An entry must be added to the DOCSDevNMAccess table to ensure SNMP communications and traps are sent to

the monitoring server from each transponder.

Network Worksheet

Network Item Value

Cable Modem

MAC Address

Cable Modem IP

Address

TFTP Server IP

Address

Provisioning

Server IP Address

Time of Day Server

IP Address

DHCP Server IP

Address

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14 050-0188, Rev. J (03/2016)

3.4 Cable Modem Conguration File

Alpha Technologies strongly recommends you ensure that the cable modem conguration le has been successfully

modied and tested prior to deploying transponders into the system in quantity. The transponder manages SNMP lters

and trap destinations via the docsDevNmAccessTable.

To ensure the proper management of SNMP access, such as limiting access to certain SNMP managers or allowing

the transponder to send SNMP/HMS traps, the docsDevNmAccessTable must be populated via the cable modem

conguration le.

Additional OIDs may be added to further congure other options such as the transponder’s HTTP port, its username and

password conguration information (see section titled “CMD-N Web Interface”), or its support for telnet server access (see

section titled “Console Access”).

The following is a sample cable modem conguration le. Include only those OIDs that will provide the desired features

and functionality.

Fig. 3-2, Cable Modem Conguration File

3.5 Installing the CMD-N Transponder

The following sections detail installation procedures for installing the CMD-N transponder into the following nodes:

• SG4000

• MBN100/200

• BTN100 modular optical node

• VSN1000 node

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SG4000 Node Installation

1. Remove the transponder from the shipping package. Record the transponder’s MAC address, associated node

number and location information to be entered into the provisioning and monitoring systems.

2. Position the transponder so that the interface connector shown in Fig. 3-3 aligns with the node’s interface

connector shown in Fig. 3-4.

Fig. 3-3, Fiber Node Interface Connector

Fig. 3-4, Slot and Interface Connector

Interface Connector

Fiber Node Interface Connector

Slot

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3. Firmly push the transponder down onto the node’s motherboard until the transponder seats into position. Use the

screws provided with the transponder to secure the transponder to the motherboard. The locations of the screw

access holes are shown in Fig. 3-5.

Fig. 3-5, Mounting Screw Access Locations

4. Attach the Forward RF cable (the longer cable) to the appropriate SG4 RF module -20dB test point. Route the

cable(s) appropriately within the node (see Fig. 3-6).

Fig. 3-6, RF Cable Attached to RF Test Points

Screw Holes

Forward RF Connector to RF Test Point

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5. Attach the Return (upstream) RF cable (the shorter cable) to the “SM” test point connector on the Return

Conguration board located directly above the receiver optical module in slot 3 or slot 7 (see Fig. 3-7).

Fig. 3-7, RF Cable Attached to SM Test Point

SM Test Point Connector

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18 050-0188, Rev. J (03/2016)

MBN100/200 Node Installation

1. Remove the transponder from the shipping package. Record the transponder’s MAC address, associated node

number and location information to be entered into the provisioning and monitoring systems.

2. Position the transponder so that the interface connector shown in Fig. 3-8 aligns with the node’s interface

connector shown in Fig. 3-9.

Fig. 3-8, Fiber Node Interface Connector

Fig. 3-9, Slot and Interface Connector

Interface Connector

Fiber Node Interface Connector

Slot

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3. Firmly push the transponder down onto the node’s motherboard until the transponder seats into position. Use the

screws provided with the transponder to secure the transponder to the motherboard. The locations of the screw

access holes are shown in Fig. 3-10.

Fig. 3-10, Mounting Screw Access Locations

4. Attach the Forward RF cable (the longer cable) to the -20dB Status Monitor Output injection point. Route the

cable(s) appropriately within the node (see Fig. 3-11).

Fig. 3-11, RF Cable Attached to Injection Point

Screw Holes

Forward RF Connector

to Status Monitor Output

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20 050-0188, Rev. J (03/2016)

5. Attach the Return (upstream) RF cable (the shorter cable) to the appropriate Transmitter Status Monitor injection

point (see Fig. 3-12).

Fig. 3-12, RF Cable Attached to SM Test Point

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Alpha CMD-N Arris SG4000 Technical Manual

Alpha CMD-N Arris SG4000 Technical Manual

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