Comtech EF Data CDM-IP User Manual

CDM-IP

Quick-Start Guide

For IP Enabled Satellite Modems

Part Number CD/CDMIPQSG.IOM

Rev. 0

May 15, 2003

CDM-IP

Quick-Start Guide

For IP Enabled Satellite Modems

Comtech EF Data is an ISO 9001
Registered Company.

Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, [phone], FAX: [phone]

Part Number CD/CDMIPQSG.IOM

Rev. 0

May 15, 2003

Copyright © Comtech EF Data, 2002. All rights reserved. Printed in the USA.

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CDM-IP Quick Start Guide Rev. 0
Preface CD/CDMIPQSG.IOM

CUSTOMER SUPPORT

Contact Comtech EF Data Customer Support for:

 Product support or training
 Information on upgrading or returning a product

A Customer Support representative may be reached at:
Comtech EF Data

Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA

[phone] (Main Comtech EF Data Number)
[phone] (Customer Support Desk)
[phone] FAX
or, E-Mail can be sent to the Customer Support Department at:
[e-mail]

1. To return a Comtech EF Data product (in-warranty and out-of-warranty) for
repair or replacement:

2. Request a Return Material Authorization (RMA) number from the Comtech
EF Data Customer Support Department.

3. Be prepared to supply the Customer Support representative with the model
number, serial number, and a description of the problem.

4. To ensure that the product is not damaged during shipping, pack the product
in its original shipping carton/packaging.

5. Ship the product back to Comtech EF Data. (Shipping charges should be
prepaid.)

ii

Table of Contents

Customer Support .......................................................................................................................ii

Table of Contents.........................................................................................................................iii

About this Manual....................................................................................................................... v

Conventions and References....................................................................................................... v

Metric Conversion ...................................................................................................................... v

Recommended Standard Designations ....................................................................................... v

Trademarks ................................................................................................................................. v

EMC Compliance.......................................................................................................................vi

Federal Communications Commission (FCC)...........................................................................vi

Safety Compliance....................................................................................................................vii

EN 60950..................................................................................................................................vii

Warranty Policy.......................................................................................................................viii

CHAPTER 1. GETTING STARTED .............................................................................9

1.1 Introduction............................................................................................................................. 9

1.1.1 Equipment List................................................................................................................... 9

1.1.2 Equipment Setup.............................................................................................................. 10

1.1.3 Transmit and Receive IF Configuration .......................................................................... 10

1.1.4 Serial console port Command Line Interface (CLI) Configuration................................. 10

1.1.5 Main Menu....................................................................................................................... 11

1.1.6 Restoring Factory Default Configuration ........................................................................ 11

1.2 EasyConnect Point-to-Point System Configuration....................................................... 12

1.2.1 PC Configuration............................................................................................................. 12

1.2.2 CDM-IP Configuration................................................................................................... 12

1.2.3 Setting IP Address(es)...................................................................................................... 13

1.3 Router Mode Point-to-Point System Configuration.......................................................... 14

1.3.1 PC Configuration............................................................................................................. 14

1.3.2 Setting CDM-IP Modems to Router Mode Operation..................................................... 14

1.3.3 Setting IP Address(es)...................................................................................................... 15

1.3.4 Route Table...................................................................................................................... 16

1.4 Troubleshooting IP Module................................................................................................. 18

1.4.1 EasyConnect Mode Troubleshooting........................................................................... 18

1.4.2 Router Mode Troubleshooting......................................................................................... 20

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Figures

Figure 1. Main Menu ................................................................................................................... 11

Figure 2. EasyConnect Point-to-Point System Configuration.................................................. 12

Figure 3. Router Mode Point-to-Point System Configuration..................................................... 14

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CDM-IP Quick Start Guide Rev. 0
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ABOUT THIS MANUAL

This manual provides installation and operation information for the Comtech EF Data
CDM-IP Enabled Modems. This is a technical document intended for earth station
engineers, technicians, and operators responsible for the operation and maintenance of
the CDM-IP Enabled Modems.

CONVENTIONS AND REFERENCES

CAUTIONS AND WARNINGS

Indicates information critical for proper equipment function.

IMPORTANT

CAUTION

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 or risks of
property damage.

Indicates a potentially hazardous situation that, if not avoided, could result in

WARNING

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 compliance, 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.

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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.

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.

CAUTION: Double-pole/Neutral Fusing.

!

ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung.

International Symbols:

Symbol Definition Symbol Definition

Alternating Current.

Fuse.

Protective Earth.

Chassis Ground.

Note: For additional symbols, refer to “Cautions” listed earlier in this preface.

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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.

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.

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

viii

1.1 INTRODUCTION

This quick start guide will allow a user to configure a pair of CDM-IP 550 or CDM-IP
300L (referred to as CDM-IP in rest of the document) from beginning (i.e. starting from
factory default settings) and be able to pass traffic within minutes. It is assumed that the
user is familiar with the configuration of the base satellite modem.

Chapter 1. Getting Started

Introduction................................................ 9

EasyConnect Point-to-Point System

Configuration......................................

Router Mode Point-to-Point System

Configuration...................................... 14

Troubleshooting IP Module ....................... 18

12

1.1.1 EQUIPMENT LIST

Following equipment is required:

Item Equipment Quantity Comments

CDM-IP Modem 2 Can be CDM-IP 550 or CDM-IP 300L

1

10/100 BaseT Ethernet Hub 2 Provided by customer

2

PC with NIC and a terminal

3

emulation program
Console cable (DB-9 to RJ-11) 1 Supplied by Comtech EF Data

4

Ethernet cables (CAT 5) 4 Provided by customer

5

IF cables 2 Provided by customer

6

Note: CDM-IP 550 can be used with a

CDM-IP 300L, but customer will
need to provide equipment to
convert 70 MHz IF to L-band for
a duplex connection.

Note: Only 10BaseT operation is

supported in EasyConnect
mode.

RJ-45 crossover Ethernet cables can be
substituted to directly connect PC to
CDM-IP modem without the use of a hub.

2 Provided by customer

(To interconnect TX-RX between both
CDM-IP modems.)

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1.1.2 EQUIPMENT SETUP

Step Description

Connect each CDM-IP to the PC via the Ethernet Hub.

1

Connect the TX IF on CDM-IP 1 to RX IF of CDM-IP 2 and vice-versa.

2

Connect the DB-9 end of the console cable to the COM1 or COM2 port of the PC and

3

the RJ-11 end to the console port at the back of CDM-IP 1.
Connect CDM-IP 1 and CDM-IP 2 to suitable power supply and turn them ON.

4

1.1.3 TRANSMIT AND RECEIVE IF CONFIGURATION

Step Description

Configure the transmit and receive IF parameters on CDM-IP 1 and CDM-IP 2 via the

1

front panel.

Note: The IF parameters can also be set via console menu, Telnet, web interface and

SNMP - but for this exercise, it is recommended that the front panel be used.

Set the TxPower to minimum level.

2

Before proceeding to next step, make sure that each CDM-IP is appropriately carrier-

3

locked to the other CDM-IP.

1.1.4 SERIAL CONSOLE PORT COMMAND LINE INTERFACE (CLI) CONFIGURATION

Step Description

Launch the terminal emulation program - such as HyperTerminal on Microsoft Windows.

1

Select the appropriate COM port (to which the DB-9 end of the console cable is

2

connected) and configure it for:

 38,400 bps
 8 data bits
 no parity
 1 stop bit
 no hardware flow control

Press return and to bring up the Main menu.

3

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1.1.5 MAIN MENU

Figure 1. Main Menu

To use the Command Line Interface (CLI), select the appropriate sub-menu or the entry
by pressing the character indicated at the right. Enter x to return to the previous menu.

Note: Any CDM-IP configuration changes need to be saved to permanent storage by selecting [S]

from any menu screen and then typing [y] to save.

1.1.6 RESTORING FACTORY DEFAULT CONFIGURATION

The following sections in this guide assume that the CDM-IP is still in factory default
configuration for IP. If that’s not the case, the factory default configuration can be
restored from the menu:

Step Description

From the Main Menu, select Operations and Maintenance sub-menu [O].

1

From the Operations and Maintenance menu, select Database Operations sub-menu

2

[D].
From the Database Operations menu, select Restore Factory Default option [R].

3

Confirm when prompted by typing ‘yes’ when the following prompt is displayed;

4

Are you sure you want to restore factory default settings?
WARNING: Chosing Yes will restore factory defaults and then

reboot..

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This will erase any user configuration and restore the CDM-IP to factory default
configuration. Proceed to Section 1.2 to perform the EasyConnect Mode configuration
or to Section 1.3 to perform the Router Mode configuration.

1.2 EASYCONNECT POINT-TO-POINT SYSTEM CONFIGURATION

The steps in this guide will lead to following configuration:

Ethernet Interface (fei0)

IP Address:

Mask:

172.16.10.1

255.255.255.0

Ethernet Interface (fei0)

IP Address:

Mask:

172.16.10.2

255.255.255.0

10 BaseT

Ethernet Hub

Satellite IP Modem (CDM-IP 1)

IP Address:
Mask:

172.16.10.11

255.255.255.0

PC 1

Figure 2. EasyConnect Point-to-Point System Configuration

1.2.1 PC CONFIGURATION

Step Description

Set the IP address on PC 1 to 172.16.10.11, mask to 255.255.255.0.

1

Set the IP address on PC 2 to 172.16.10.12, mask to 255.255.255.0.

2

Reboot the PCs (if required).

3

1.2.2 CDM-IP CONFIGURATION

RF or IF

Satellite IP Modem (CDM-IP 2)

IP Address:
Mask:

172.16.10.12

255.255.255.0

PC 2

10 BaseT

Ethernet Hub

After restoring the factory default settings, the CDM-IP will be in EasyConnect Mode,
which will automaticaly put the CDM-IP in 10BaseT Half Duplex. Select

Configuration\Ethernet Interface(fei0)

to verify the Speed Mode is 10 baseT Half

Interface

Duplex. If desired 10BaseT Full Duplex can be selected, but the CDM-IP will not allow
Auto Speed Mode or 100 BaseT when in EasyConnect

12

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The CDM-IP will also be in Point-to Point HDLC Addressing Mode. HDLC addresses
are used to identify remote satellite interfaces when there are more than two CDM-IP
modems sending and receiving traffic. In Point-to-Point Mode, there is no need to define
any HDLC addresses since all of the traffic will be to and from a single remote CDM-IP.

1.2.3 SETTING IP ADDRESS(ES)

Step Description

From the Main Menu select Interface Configuration sub-menu [I].

1

From the Interface Configuration Menu select Ethernet Interface (fei0) sub-menu [E].

2

Set IP Address [I].

3

CDM-IP 1 to 172.16.10.1
CDM-IP 2 to 172.16.10.2
Set Subnet Prefix Length [M] to 24

4

The other parameters can be left to their factory default settings.
At this point the basic configuration is over and you should be able to:

From PC1

5

Ping 172.16.10.1 (CDM-IP 1)
Ping 172.16.10.2 (CDM-IP 2)
Ping 172.16.10.12 (PC 2)
From PC2

6

Ping 172.16.10.2 (CDM-IP 2)
Ping 172.16.10.1 (CDM-IP 1)
Ping 172.16.10.11 (PC 1)

Do not enable IF Loopback (or link the TX to RX by a BNC cable or satellite link) on a
CDM-IP modem operating in EasyConnect when connected to a LAN. In this

IMPORTANT

configuration, EasyConnect will resend all layer 2 broadcast packets and cause a
“broadcast storm” on the LAN. To perform a loop test to verify the modem or satellite
link, do one of the following:

(CDM-IP 550 Only) Reconfigure the CDM-IP 550 to CDM 550 Emulation Mode by
selecting Configuration/Interface and then selecting EIA-422/530, V.35, or EIA-232.

Set the CDM-IP modem to Router Mode.

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1.3 ROUTER MODE POINT-TO-POINT SYSTEM CONFIGURATION

The steps in this guide will lead to following configuration:

Ethernet Interface (fei0)

IP Address: 172.16.10.1

Mask: 255.255.255.0

IP Destination Next Hop Type

172.17.10.0/24 0x02 To Sat

Route Table

RX HDLC Address –

0x01

IP Destination Next Hop Type

172.16.10.0/24 0x01 To Sat

Route Table

RX HDLC Address

Ethernet Interface (fei0)

IP Address: 172.17.10.1

Mask: 255.255.255.0

0x02

–

Satellite IP Modem (CDM-IP 1)

Satellite IP Modem (CDM-IP 2)

RF or IF

IP Address: 172.16.10.11

10/100 BaseT

Ethernet Hub

Mask: 255.255.255.0

GW: 172.16.10.1

PC 1

Figure 3. Router Mode Point-to-Point System Configuration

IP Address: 172.17.10.11

Mask: 255.255.255.0

GW: 172.17.10.1

PC 2

1.3.1 PC CONFIGURATION

Step Description

Set the IP address on PC 1 to 172.16.10.11, mask to 255.255.255.0. Set PC Gateway to

1

172.16.10.1
Set the IP address on PC 2 to 172.17.10.11, mask to 255.255.255.0. Set PC Gateway to

2

172.17.10.1

Reboot the PCs (if required).

1.3.2 SETTING CDM-IP MODEMS TO ROUTER MODE OPERATION

10/100 BaseT

Ethernet Hub

Perform the following steps on CDM-IP 1

Step Description

From the Main Menu, select Administration [A] sub-menu.

1

From the Administration menu, select CDM-IP Working Mode [C].

2

Confirm when prompted by typing ‘y’ when the following prompt is displayed;

3

Changing Modem working mode requires system Reboot.
Do you want to continue(Y/N)[Enter :No]

Select [1] for Router Mode.
Allow CDM-IP to reboot. After reboot, select Interface Configuration [I] from the Main

4

Menu.

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From the Interface Configuration menu, select Satellite/HDLC Interface (hdl0) [H].

5

From the Satellite/HDLC Interface (hdl0) menu, select HDLC Addr Mode [M].

6

Confirm when prompted by typing ‘y’ when the following prompt is displayed;

7

Changing HDLC address mode causes system Reboot.
Do you want to continue(Y/N)[Enter :No]

Select [1] for Small Network Mode.
Allow CDM-IP to reboot. After reboot, select Interface Configuration [I] from the Main

8

Menu.
From the Interface Configuration menu, select Receive HDLC Channel Addresses

9

[H].
From the Receive HDLC Channel Addresses menu, select [1] for HDLC Addr 1. The

10

following prompt will be displayed;

Please enter a value for the HDLC Addr 1
Press ESC to abort
HDLC address [SMALL NETWORK] in hex <0x1 - 0xFE, enter = 0001>:

Enter [2] to set HDLC Addr 1 to 0x01.
Note: HDLC Addr 1 will display as 0x0001, although only the last 2 digits are used in

Small Network Mode, allowing up to 254 separate HDLC addresses.

Repeat Steps 1 - 9 on CDM-IP 2. Also, repeat Step 10, but set HDLC Addr 1 to 0x02.

11

Both CDM-IP modems are now in Router/Small Network Mode, which will means that
the CDM-IP modems will be on independent IP subnets and will require adding static
routes to pass traffic between them.

1.3.3 SETTING IP ADDRESS(ES)

Step Description

From the Main Menu select Interface Configuration sub-menu [I].

1

From the Interface Configuration Menu select Ethernet Interface (fei0) sub-menu [E].

2

Set IP Address [I].

3

CDM-IP 1 to 172.16.10.1
CDM-IP 2 to 172.17.10.1
Set Subnet Prefix Length [M] to 24

4

Section 1.3.4, Route Table, explains this procedure.

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1.3.4 ROUTE TABLE

Perform the following steps on CDM-IP 1

Step Description

From Main Menu, select Route Table [R]sub-menu.

1

Enter 1 to configure the first route

2

Enter a suitable name

3

Set IP Address to 172.17.10.0

4

Set Number of Subnet Bits to 24

5

For Interface to which route is destined to <E-Ethernet S-Satellite Enter : S>

6

select S
For HDLC address [SMALL NETWORK] in hex <0x1 - 0xFE, enter = 0000>:

6

select 2
CDM-IP 1 Route Table should display the following:

7

Route Name Dest IP/SNet Bits Next Hop MultiCast State
Route001..[test 172.17.10.0/24 0x2 N/A toSat]

Perform the following steps on CDM-IP 2

Step Description

From Main Menu, select Route Table [R] sub-menu.

8

Enter 1 to configure the first route

9

Enter a suitable name

10

Set IP Address to 172.16.10.0

11

Set Number of Subnet Bits to 24

12

For Interface to which route is destined to <E-Ethernet S-Satellite Enter : S>

13

select S
For HDLC address [SMALL NETWORK] in hex <0x1 - 0xFE, enter = 0000>:

14

select 1
CDM-IP 2 Route Table should display the following:

15

Route Name Dest IP/SNet Bits Next Hop MultiCast State
Route001..[test 172.16.10.0/24 0x1 N/A toSat]

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At this point the basic configuration is over and you should be able to:

 Ping PC 1 from PC 2 and vice versa
 Ping CDM-IP 2 from PC 1 and vice versa
 Pass any other data between the 2 PCs

From PC1

5

Ping 172.16.10.1 (CDM-IP 1)
Ping 172.17.10.2 (CDM-IP 2)
Ping 172.17.10.11 (PC 2)
From PC2

6

Ping 172.17.10.1 (CDM-IP 2)
Ping 172.16.10.1 (CDM-IP 1)
Ping 172.16.10.11 (PC 1)

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1.4 TROUBLESHOOTING IP MODULE

The CDM-IP comes with a variety of diagnostic tools to aid in identifying the traffic path
going into and out of the CDM-IP modem. This troubleshooting section shows how to
use some of these tools and also identifies several common problems encountered when
first setting up 2 CDM-IP modems. If following these troubleshooting steps fails to
resolve the problem, contact a Customer Support representative at:

Comtech EF Data
Attention: Customer Support Department
2114 West 7th Street
Tempe, Arizona 85281 USA

[phone] (Main Comtech EF Data Number)
[phone] (Customer Support Desk)
[phone] FAX
or, E-Mail can be sent to the Customer Support Department at:
[e-mail]

1.4.1 EASYCONNECT MODE TROUBLESHOOTING

Use the following troubleshooting steps if unable to successfully send traffic in
EasyConnect

Step Problem Action

No Ping response from the

1

locally connected PC to the

.

EasyConnect Mode Troubleshooting

a) Verify correct IP address/subnet on PC and

CDM-IP.

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CDM-IP Ethernet port. ICMP
response is ‘Request timed out’.

No Ping response from the

2

locally connected PC to the
remote CDM-IP or remote PC.
ICMP response is ‘Request
timed out’.

b) Verify Ethernet connection – cables, hub, etc. PC,

hub, and CDM-IP should have Ethernet activity
LED lit.

Note: A PC must be connected to the CDM-IP

using a hub, switch or a RJ45 crossover
cable. When the CDM-IP Ethernet port
senses an Ethernet connection, the CLI
will display;

phymon_callback(): enet link
change! link=1

If the connection is broken, the CLI will
display;

phymon_callback(): enet link
change! link=0

a) Verify both CDM-IP’s are in EasyConnect/Point-

to-Point Modes.

b) Verify IF link between modems for proper settings

and carrier quality (RX signal level, Eb/No, etc). It
is possible that there is a spectrum inversion,
particularly if you are using the CDM-IP with RF
converter equipment. If this is the case, the signal
level & Eb/No may be OK, but no data will be
received. To correct this invert the TX and RX
Spectrum on one of the CDM-IP’s.

c) Send a constant ping from the PC 1 ‘ping

172.16.10.2 –t’ to PC 2. In the CDM-IP 1, go to
Operations and Maintenance/Diagnostics. Enable
‘Dump Packets transmitted to Satellite Interface’.
Verify that the Pings are being transmitted by
observing 1 packet on CLI every second. If not
displayed, reverify PC 1 and CDM-IP 1 settings.
Disable ‘Dump Packets transmitted to Satellite
Interface’ by entering ‘T’.

d) Continue sending constant ping from the PC 1 to

PC 2. In the CDM-IP 2, go to Operations
Maintenance/Diagnostics. Enable ‘Dump Packets
received from Satellite Interface’. Verify that the
Pings are being received by observing 1 packet on
CLI every second. If not displayed, reverify PC 2
and CDM-IP 2 settings. Disable ‘Dump Packets
received from Satellite Interface’ by entering ‘R’.

Note: All pings transmitted will require a reply to

be transmitted from the target host. Use
the Diagnostics ‘Dump Packets” tools to
isolate where packets are lost in the CDM­IP duplex paths. Also, always disable
“Dump Packets” before sending live traffic.

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1.4.2 ROUTER MODE TROUBLESHOOTING

Use the following troubleshooting steps if unable to successfully send traffic in Router
Mode.

Router Mode Troubleshooting

Step Problem Action

No Ping response from the

1

locally connected PC to the
CDM-IP Ethernet port. ICMP
response is ‘Request timed out’.

No Ping response from the

2

locally connected PC to the
remote CDM-IP or remote PC.
ICMP response is ‘Request
timed out’.

a) Verify correct IP address/subnet on PC and

CDM-IP.

b) Verify Ethernet connection – cables, hub, etc. PC,

hub, and CDM-IP should have Ethernet activity
LED lit.

Note: A PC must be connected to the CDM-IP

using a hub, switch or a RJ45 crossover
cable. When the CDM-IP Ethernet port
senses an Ethernet connection, the CLI
will display;

phymon_callback(): enet link
change! link=1

If the connection is broken, the CLI will
display;

phymon_callback(): enet link
change! link=0

a) Verify both CDM-IP’s are in Router/Small Network

Modes.

b) Verify PC’s Gateways are set to local CDM-IP

address.

c) Verify IF link between modems for proper settings

and carrier quality (RX signal level, Eb/No, etc). It
is possible that there is a spectrum inversion,
particularly if you are using the CDM-IP with RF
converter equipment. If this is the case, the signal
level & Eb/No may be OK, but no data will be
received. To correct this invert the TX and RX
Spectrum on one of the CDM-IP’s.

No Ping response from PC 1 to

3

PC 2 or vice versa. ICMP
response is

‘ Reply from 172.XXX.10.1 ­Destination net unreachable’

a) Verify CDM-IP Route Tables are correct

20

METRIC CONVERSIONS

Units of Length

Unit

1 centimeter — 0.3937 0.03281 0.01094

1 inch 2.540 — 0.08333 0.2778

1 foot 30.480 12.0 — 0.3333

1 yard 91.44 36.0 3.0 —

Centimeter

Inch

Foot

Yard

Mile

6.214 x 10

1.578 x 10

1.893 x 10

5.679 x 10

Meter

-6

-5

-4

-4

0.01 — —

0.254 — 25.4

0.3048 — —

0.9144 — —

Kilometer Millimeter

1 meter 100.0 39.37 3.281 1.094

1 mile

1 mm — 0.03937 — — — — — —

1 kilometer — — — — 0.621 — — —

1.609 x 10

5

6.336 x 104 5.280 x 103 1.760 x 103

6.214 x 10

-4

—

— — —

1.609 x 103

1.609 —

Temperature Conversions

Unit

32° Fahrenheit

212° Fahrenheit

-459.6° Fahrenheit

° Fahrenheit

—

—

—

° Centigrade

0

(water freezes)

100

(water boils)

273.1

(absolute 0)

Formulas

C = (F - 32) * 0.555

F = (C * 1.8) + 32

Units of Weight

Unit

1 gram — 0.03527 0.03215 0.002205 0.002679 0.001

Gram

Ounce

Avoirdupois

Ounce

Troy

Pound

Avoir.

Pound

Troy

Kilogram

1 oz. avoir. 28.35 — 0.9115 0.0625 0.07595 0.02835

1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110

1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536

1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732

1 kilogram

1.0 x 10

3

35.27 32.15 2.205 2.679 —

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