Comtech EF Data CDM-570L User Manual
Vipersat CDM-570/L, CDD-56X
Parameter Editor
User Guide
Part Number MN-0000038 Revision 1
Vipersat CDM-570/L, CDD-56X
Parameter Editor
User Guide
Part Number MN-0000038
Document Revision 1
Software version 1.5.4.55
February 6, 2009
COMTECH EF DATA
VIPERSAT Network Products Group
3215 Skyway Court
Fremont, CA 94539
USA
Phone: (510) 252-1462
Fax: (510) 252-1695
www.comtechefdata.com
Part Number: MN-0000038
Revision: 1
Software Version 1.5.4.55
©2009 by Comtech EF Data, Inc. All rights reserved. No part of this document may be copied or
reproduced by any means without prior written permission of Comtech EF Data.
Comtech reserves the right to revise this publication at any time without obligation to provide
notification of such revision. Comtech periodically revises and improves its products and
therefore the information in this document is subject to change without prior notice. Comtech
makes no warranty of any kind with regard to this material, including but limited to the implied
warranties of merchantability and fitness for a particular purpose. No responsibility for any errors
or omissions that may pertain to the material herein is assumed. Comtech makes no
commitment to update nor to keep current the information contained in this document.
All products, names and services are trademarks or registered trademarks of their respective
companies.
Printed in the United States of America
Document Revision History
Revision Date Description
0
11/26/08
Initial release.
1
2/06/09
New functionality in this release: Tree View user interface.
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Table of Contents
Chapter 1
General
How to Use This Manual . . . . . . . . . . . 1-1
Manual Organization . . . . . . . . . . . . 1-1
Chapter 1 — General . . . . . . . . . . 1-1
Chapter 2 — Using Parameter Editor . . 1-1
Appendix A — Glossary . . . . . . . . . 1-1
Conventions and References . . . . . . . . 1-2
Product Description . . . . . . . . . . . . . . 1-3
Introduction . . . . . . . . . . . . . . . . . 1-3
Parameter Editor Features . . . . . . . . . 1-3
Customer Support . . . . . . . . . . . . . . . 1-4
Contact Information . . . . . . . . . . . 1-4
Reader Comments / Corrections . . . . 1-4
Chapter 2
Using Parameter Editor
General . . . . . . . . . . . . . . . . . . . . 2-1
DLL Files . . . . . . . . . . . . . . . . . . 2-1
Updating DLL Files . . . . . . . . . . . 2-2
Configuration Changes . . . . . . . . . . . 2-2
Parameter Editor Tree Menu . . . . . . . . . 2-3
Configuration Alert . . . . . . . . . . . 2-4
Network . . . . . . . . . . . . . . . . . . . . 2-5
Ethernet . . . . . . . . . . . . . . . . . 2-5
HDLC Addressing Mode . . . . . . . . 2-6
Enable All Downlink Multicast . . . . . . 2-7
DHCP Server IP Address . . . . . . . . 2-7
Dynamic Buffer Latency . . . . . . . . . 2-7
Routing . . . . . . . . . . . . . . . . . . . 2-7
Adding a Route . . . . . . . . . . . . . 2-7
Modifying a Route . . . . . . . . . . . 2-10
QoS . . . . . . . . . . . . . . . . . . . . 2-10
Enable Quality of Service . . . . . . . 2-11
Enable SAR . . . . . . . . . . . . . . 2-12
Rules Table . . . . . . . . . . . . . . 2-12
Developing QoS Rules in a VMS Network 2-12
Defining QoS Rules . . . . . . . . . . 2-12
Rule Max/Priority & Rule Min/Max Modes .
2-14
Diff Serv QoS Mode . . . . . . . . . . 2-18
IGMP . . . . . . . . . . . . . . . . . . . 2-21
Modem as IGMP Server. . . . . . . . 2-22
Modem as IGMP Client . . . . . . . . 2-23
Managed Switch . . . . . . . . . . . . . 2-25
VLAN . . . . . . . . . . . . . . . . . . . 2-25
Vipersat . . . . . . . . . . . . . . . . . . . 2-27
Role Designation . . . . . . . . . . . 2-27
Enable VFS . . . . . . . . . . . . . . 2-28
Enable Heart Beat . . . . . . . . . . 2-28
Enable SOTM . . . . . . . . . . . . . 2-28
Carrier Inhibit Timer . . . . . . . . . 2-29
Network ID . . . . . . . . . . . . . . 2-29
Database Version . . . . . . . . . . . 2-29
Node Name . . . . . . . . . . . . . . 2-30
Multicast Management Address . . . 2-30
STDMA . . . . . . . . . . . . . . . . . . 2-30
Enable STDMA . . . . . . . . . . . . 2-30
Enable Power Hunt . . . . . . . . . . 2-30
Enable Low Data Rate Fast Acquisition . .
2-31
Allocation Method . . . . . . . . . . . 2-32
Group ID . . . . . . . . . . . . . . . 2-34
Slot Data Length . . . . . . . . . . . 2-35
Stats Collection . . . . . . . . . . . . 2-35
Burst Map Rate . . . . . . . . . . . . 2-36
Preamble . . . . . . . . . . . . . . . 2-36
Guard Band . . . . . . . . . . . . . . 2-36
Remote List . . . . . . . . . . . . . . 2-37
Automatic Remote Removal . . . . . 2-38
Switching . . . . . . . . . . . . . . . . . 2-39
Application Switch Detection . . . . . 2-40
Load Switching . . . . . . . . . . . . 2-45
Hitless Switching . . . . . . . . . . . 2-48
DPC . . . . . . . . . . . . . . . . . . . 2-49
Enable Dynamic Power Control . . . 2-50
Minimum Power . . . . . . . . . . . 2-50
Maximum Power . . . . . . . . . . . 2-51
Target Eb/N0 . . . . . . . . . . . . . 2-51
Speed Up Eb/N0 . . . . . . . . . . . 2-51
Target Range For No Power Adjust . 2-51
Target IP Address . . . . . . . . . . . 2-51
Home State . . . . . . . . . . . . . . . . 2-52
Admin . . . . . . . . . . . . . . . . . . . . 2-54
User Names and Passwords . . . . . 2-54
Enable Ping Reply . . . . . . . . . . 2-55
Enable Telnet . . . . . . . . . . . . . 2-55
ToC i
Telnet Inactivity Timeout . . . . . . . 2-55
Access . . . . . . . . . . . . . . . . . . 2-55
SNMP . . . . . . . . . . . . . . . . . . . 2-56
Enable SNMP for Modem Configuration .
2-57
Enable Authentication Trap . . . . . . 2-57
Trap Version . . . . . . . . . . . . . . 2-57
Trap Destination Addresses . . . . . . 2-58
Community Strings . . . . . . . . . . 2-58
System Contact . . . . . . . . . . . . 2-58
System Name . . . . . . . . . . . . . 2-58
System Location . . . . . . . . . . . . 2-59
SMTP . . . . . . . . . . . . . . . . . . . 2-59
Server IP Address . . . . . . . . . . . 2-60
Domain . . . . . . . . . . . . . . . . 2-60
Destination Name . . . . . . . . . . . 2-60
Compression . . . . . . . . . . . . . . . 2-60
Tx Header Compression . . . . . . . 2-60
Tx Payload Compression . . . . . . . 2-61
Triple DES . . . . . . . . . . . . . . . . 2-62
Maintenance . . . . . . . . . . . . . . . . . 2-65
Upgrade Image . . . . . . . . . . . . 2-65
Base Modem Image . . . . . . . . . 2-66
Enable Redundancy . . . . . . . . . 2-66
Codecast Address . . . . . . . . . . 2-66
Event Logging . . . . . . . . . . . . 2-66
Automatically Save PARAM After CONFIG
Change . . . . . . . . . . . . . . . 2-66
Appendix A
Glossary
. . . . . . . . . . . . . . . . . . . . . A-1
Index
. . . . . . . . . . . . . . . . . . .Index-1
ii CDM-570/L, CDD-56X Parameter Editor User Guide
List of Figures
Chapter 2 Figures
Figure 2-1 Tree Menus, Vipersat Modes. . . . . 2-3
Figure 2-2 Alert, Parameter Conflict . . . . . . . . 2-4
Figure 2-3 Network dialog . . . . . . . . . . . . . . . . 2-5
Figure 2-4 HDLC Addressing Mode Menu . . . 2-6
Figure 2-5 Routing dialog . . . . . . . . . . . . . . . . 2-8
Figure 2-6 Add Route dialog . . . . . . . . . . . . . . 2-8
Figure 2-7 Multicast Network Address . . . . . . 2-9
Figure 2-8 Modify Route dialog . . . . . . . . . . . 2-10
Figure 2-9 QoS dialog, Max/Priority Mode . . 2-11
Figure 2-10 Add Quality Of Service Rule dialog . .
2-13
Figure 2-11 Add QoS Rule, Max/Priority Mode 2-15
Figure 2-12 Protocol Drop-Down Menu. . . . . 2-16
Figure 2-13 QoS Tab, Diff Serv Mode. . . . . . 2-18
Figure 2-14 Modify DiffServ Rule . . . . . . . . . 2-19
Figure 2-15 IGMP dialog . . . . . . . . . . . . . . . . 2-21
Figure 2-16 IGMP Server dialog . . . . . . . . . . 2-22
Figure 2-17 IGMP Client dialog. . . . . . . . . . . 2-23
Figure 2-18 Managed Switch dialog . . . . . . . 2-25
Figure 2-19 VLAN dialog. . . . . . . . . . . . . . . . 2-26
Figure 2-20 Vipersat dialog, Hub Unit . . . . . . 2-27
Figure 2-21 STDMA dialog, Hub Unit . . . . . . 2-31
Figure 2-22 STDMA dialog, Remote Unit . . . 2-32
Figure 2-23 Bandwidth Allocation Method. . . 2-33
Figure 2-24 STDMA Remote List, ECM . . . . 2-37
Figure 2-25 Remote Entry dialog, ECM . . . . 2-38
Figure 2-26 Automatic Remote Removal . . . 2-39
Figure 2-27 Switching dialog . . . . . . . . . . . . . 2-40
Figure 2-28 Application Switch Detection, Remote
Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-29 Type of Service Switching List . . 2-43
Figure 2-30 Type of Service Entry. . . . . . . . . 2-44
Figure 2-31 Load Switching, Remote Unit. . . 2-45
Figure 2-32 Hitless Switching dialog . . . . . . . 2-48
Figure 2-33 DPC dialog. . . . . . . . . . . . . . . . . 2-50
Figure 2-34 Home State, Enable STDMA . . . 2-52
Figure 2-35 Home State dialog, Modulator . . 2-52
Figure 2-36 Admin dialog . . . . . . . . . . . . . . . 2-54
Figure 2-37 Authentication dialog . . . . . . . . . 2-55
Figure 2-38 Admin dialog, Enabled . . . . . . . . 2-55
Figure 2-39 Access dialog. . . . . . . . . . . . . . . 2-56
Figure 2-40 SNMP dialog . . . . . . . . . . . . . . . 2-57
Figure 2-41 SMTP Tab . . . . . . . . . . . . . . . . . 2-59
Figure 2-42 Compression dialog . . . . . . . . . . 2-61
Figure 2-43 Triple DES dialog . . . . . . . . . . . . 2-63
Figure 2-44 Modify DES Key dialog . . . . . . . 2-64
Figure 2-45 Maintenance dialog . . . . . . . . . . 2-65
LoF iii
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iv CDM-570/L, CDD-56X Parameter Editor User Guide
Chapter 2 Tables
Table 2-1 DiffServ Code Points (DSCP). . . . . 2-19
Table 2-2 Expedited and Assured Forwarding,
DSCP. . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Table 2-3 Vipersat unit Network Functions and
Roles . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
List of Tables
LoT v
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vi CDM-570/L, CDD-56X Parameter Editor User Guide
GENERAL
How to Use This Manual
This manual documents the features and functions of the Vipersat Parameter
Editor software user interface, and guides the user in how to use this product for
configuring a Comtech modem/router to operate in a Vipersat satellite network.
Workstation users, as well as network administrators and operators responsible
for the configuration and maintenance of the Vipersat satellite network, are the
intended audience for this document.
C
HAPTER
Manual Organization
This User Guide is organized into the following sections:
Chapter 1 — General
Contains Parameter Editor product description, customer support information,
and manual conventions and references.
Chapter 2 — Using Parameter Editor
Covers the Parameter Editor dialogs and the associated fields that are used to
configure the CDM-570/570L and the CDD-56X series modems.
Appendix A — Glossary
A glossary of terms that pertain to Vipersat satellite network technology.
Chapter 1 - General 1-1
How to Use This Manual
Conventions and References
The following conventions are utilized in this manual to assist the reader:
NOTE
Note: Provides important information relevant to the accompanying
text.
Tip: Provides complementary information that facilitates the
associated actions or instructions.
Caution: Provides explanatory text that notifies the reader of
possible consequences of an action.
Warning: Provides precautionary text that describes a potentially
hazardous situation. Failure to take or avoid a specified
action may result in damage to equipment.
The following documents are referenced in this manual, and provide supplementary information for the reader:
• CDM-570/570L Modem Installation and Operation Manual (Part Number
MN/CDM570L.IOM)
• Vipersat CDM-570/570L User Guide (Part Number MN/22125)
• CDD-564L Quad Demodulator Installation and Operation Manual (Part
Number MN/CDD564L.IOM)
• Vipersat CDD-56X Series User Guide (Part Number MN/22137)
• Vipersat Management System User Guide (Part Number MN/22156)
• Vipersat Load Utility User Guide (Part Number MN/22117)
1-2 CDM-570/L, CDD-56X Parameter Editor User Guide
Product Description
Introduction
The Parameter (Param) Editor provides a simple graphical user interface (GUI)
for making configuration changes to modem/routers used in a Vipersat satellite
network. Accessible from both the VMS and VLoad, the Parameter Editor operates on the param files that store the operating parameters for network terminals.
This user guide documents the Parameter Editor as it applies to the CDM-570/
570L modem and the CDD-56X series of demodulators.
The Parameter Editor is the same in both the VMS and VLoad. However, the
way edited parameters are applied to the Vipersat network modem/routers
differs between the two. Once a modem’s configuration has been changed using
the VMS, the change is immediately applied to the modem. In contrast, changes
made using the VLoad utility are not applied until the new param file is Put
(uploaded) to the unit by the operator.
Product Description
NOTE
Note: Many of the parameters will interact with other parameters. Carefully
read the instructions before making changes to a unit’s configuration
settings.
Parameter modifications may also be made directly to the modem/router using
either a direct console connection or a Telnet connection. Refer to the modem/
router’s documentation for
tions directly at the unit.
For more information on using the Parameter Editor with the VMS, refer to the
Vipersat Management System User Guide.
For more information on using the Parameter Editor with VLoad, refer to the
Vipersat Load Utility User Guide.
details on making equipment parameter modifica-
Parameter Editor Features
The Parameter Editor software has the following features:
• Simple yet comprehensive graphical user interface.
• Integrated with both the VMS and VLoad.
• Context sensitive for device type as well as for unit role (Hub/Remote).
• Functions with multiple .dll files.
Chapter 1 - General 1-3
Customer Support
Customer Support
Contact Information
Contact Comtech Vipersat Networks Customer Support for information or
assistance with product support, service, or training on any Vipersat product.
Mail: 3215 Skyway Court
Phone: 1+510-252-1462
Fax: 1+510-252-1695
Email: supportcvni@comtechefdata.com
Web: www.comtechefdata.com
Reader Comments / Corrections
If the reader would like to submit any comments or corrections regarding this
manual and its contents, please forward them to a Comtech Vipersat Customer
Support representative. All input is appreciated.
Fremont, CA 94539
USA
1-4 CDM-570/L, CDD-56X Parameter Editor User Guide
USING PARAMETER EDITOR
General
DLL Files
C
HAPTER
The Parameter Editor is a shared run-time Dynamic Link Library (DLL) file
which is called from both VLoad and VMS software applications. It is used as
an extension to both of these programs in providing an extendable User Interface. This file resides in a locally sourced directory for access by the host application.
To access the Parameter Editor from either the VMS or VLoad, the appropriate
DLL files are required. There is a DLL file for each modem firmware version.
For example, ParamEdit-5.4.dll is utilized for modems that are running firmware v1.5.4. For networks that have multiple modem firmware versions, multiple DLL files are required.
Please note that the naming convention for these files may differ, depending on
what version of VMS or VLoad is used. Prior to VMS v3.6.2 and VLoad v3.4.1,
the convention used is
ware version. For VMS v3.6.2 and later, and VLoad v3.4.1 and later, the
convention used includes the modem designation and firmware version (e.g.,
ParamEdit-CDM5XX-x.x.dll).
Chapter 2 - Using Parameter Editor 2-1
ParamEdit-x.x.dll, where x.x identifies the modem firm-
General
Updating DLL Files
To update the Parameter Editor for one or both of the installed applications,
VLoad and/or VMS, the new DLL file is simply copied into the appropriate
directory for that application.
VMS Update
On both the VMS Client machine and the VMS Server, copy the distributed
DLL file to the following directory:
C:\Program Files\Vipersat\VMS\3.0\bin
Vload Update
Copy the distributed DLL file into the same local directory that holds the VLoad
application (.exe).
These DLL file updates will not cause any disruption to the host applications.
Configuration Changes
When changes are made to a modem unit configuration with Parameter Editor,
these changes can either be saved by clicking on the OK button at the bottom of
the window, or ignored by clicking on the Cancel button or closing the Editor.
Caution: Clicking the OK button saves all of the data from all of the menu
categories simultaneously to the modem unit Param file. The OK and
Cancel buttons do not apply to any single category, but apply to all
categories in the Parameter Editor.
Because the Parameter Editor closes after a save operation, it is recommended
that all changes be input prior to clicking on the OK button.
2-2 CDM-570/L, CDD-56X Parameter Editor User Guide
Parameter Editor Tree Menu
The Parameter Editor displays the editable parameter categories for each
network modem/router in the form of a tree menu, as shown in figure 2-1. The
tree appearance will vary depending on the selected Network Addressing Mode,
the Role Designation, and whether the unit has both a modulator and a demodulator, or a demodulator(s) only.
Vipersat Hub Vipersat Remote Expansion w/o Mod
Parameter Editor Tree Menu
Figure 2-1
Tree Menus, Vipersat Modes
From the VMS, the Parameter Editor is accessed by selecting the modem
Configure command.
From VLoad, the Parameter Editor is accessed by clicking on the Edit Param
File button.
Chapter 2 - Using Parameter Editor 2-3
Parameter Editor Tree Menu
Configuration Alert
Parameter Editor performs a check of the configuration settings that are input by
the user. If any settings are found to be in conflict for the unit, an alert message
is generated to inform the user that an adjustment is necessary. When a dialog
containing a conflicting parameter setting is exited, an alert icon will appear in
front of the associated menu item (figure 2-2). Upon re-opening the dialog, an
alert icon will be displayed next to the field in question. Clicking on the icon
will display a pop-up info-tip that explains the conflict.
Figure 2-2
Alert, Parameter Conflict
The following sections describe each of the menu items and their associated
parameter settings.
2-4 CDM-570/L, CDD-56X Parameter Editor User Guide
Network
Network
The network interface parameters are set in the Network dialog, figure 2-3.
Figure 2-3
Network dialog
Ethernet
The following Ethernet parameters can be configured for this modem unit.
IP Address
Enter the IP address that is assigned to this modem unit.
Subnet Bits
Enter the number of subnet bits associated with this modem unit’s IP address.
MAC Address
The modem unit’s MAC address is read-only. This parameter can not be modified by the user.
Chapter 2 - Using Parameter Editor 2-5
Network
Speed/Mode
Select the speed and mode for the connection from the options on the dropdown menu.
NOTE
Note: Auto mode is recommended unless the operator is absolutely certain the
device being connected does not have auto-negotiation available.
HDLC Addressing Mode
The drop-down menu for HDLC (High-level Data Link Control) Addressing
Mode shown in figure 2-4 displays five available modes (only the first four
modes are displayed for a CDD-56X):
• Small Network Mode
• Large Network Mode
• Point-to-Point Mode
• Vipersat Addressing
• Managed Switch Mode
Caution: Only the Vipersat Addressing mode configures the target modem to
communicate in a Vipersat network. Selecting any other mode will
remove the unit from the network.
Figure 2-4
HDLC Addressing Mode Menu
When using the ParamEditor to configure a modem for operation in an environment other than a Vipersat network, refer to the unit’s documentation for details
on setting and configuring the device.
Managed Switch Mode
The Managed Switch mode uses a bridging mode which is not supported in
Vipersat networks. Refer to the CDM-570/570L’s documentation for availability and detailed information on this mode.
2-6 CDM-570/L, CDD-56X Parameter Editor User Guide
Network
Warning: Selecting the Managed Switch mode will invoke bridging mode in
the target CDM-570/570L. When the OK button is clicked, the
modem will be immediately disconnected from the VMS. The VMS
cannot communicate with or control a CDM-570/570L which is
operating in the bridging mode.
Enable All Downlink Multicast
When the Enable All Downlink Multicast check box is selected, the IP Module
in the modem will automatically forward all multicast packets received from the
Satellite interface to the Ethernet LAN port without regard to the Route Table.
When this feature is not selected, multicast traffic from the Satellite will not be
forwarded to the LAN unless a multicast route exists in the Route Table to
handle this type of traffic.
DHCP Server IP Address
This option allows hosts at this remote site to receive dynamically assigned IP
addresses when a DHCP server is located at the Hub site. If applicable, enter the
IP address of the DHCP server.
Dynamic Buffer Latency
A buffer period can be specified for the modem for WAN traffic. For real-time
applications, such as voice or video, this period would typically be minimized.
This field defaults to 5 seconds; the value range is from 0.200 to 5.000 seconds.
Routing
Clicking the Routing menu item displays the modem unit’s routing dialog,
shown in figure 2-5. All current Static Routes are displayed in the table listing.
Adding a Route
To add a new static route, click the Add button at the bottom of the Routing
dialog to display the Add Route dialog shown in figure 2-6.
Route Name
Enter a designation for the route in the Route Name dialog box (maximum 13
characters).
Chapter 2 - Using Parameter Editor 2-7
Network
Figure 2-5
Figure 2-6
Routing dialog
Add Route dialog
Destination Port
The Destination Port can be either Ethernet (LAN) or Satellite (WAN). Note
that if the Ethernet radio button is selected, the Next Hop Address box
becomes active. If the Satellite radio button is selected, the Next Hop Address
2-8 CDM-570/L, CDD-56X Parameter Editor User Guide
Network
box becomes inactive and the Next Hop table entry (figure 2-5) will show as
NONE.
Network Address
Enter the destination network IP address for this route to be added to the Vipersat unit’s routing table.
Subnet Bits
Enter the number of subnet bits associated with the network address.
HDLC Address
This parameter is not supported in Vipersat networks. Refer to the modem’s
user documentation for additional information.
Next Hop Address
The Next Hop Address box allows entering the IP address of the next hop for a
route which has an Ethernet destination port selected. This address must be on
the local subnet.
Multicast
If the first three digits entered in the Network Address box are in the range of
224 to 239, the address will be recognized as multicast, as shown in figure 2-7.
The Multicast box will become active, allowing the selection of Satellite to
LAN, LAN to Satellite, or both.
Figure 2-7
Chapter 2 - Using Parameter Editor 2-9
Multicast Network Address
Network
Per Route Features
The Per Route Features provide optional functionality choices for the modem/
router unit. The per route features are:
• Header Compression – Refer to section “Compression” on page 2-60 for
details on setting header compression.
• Payload Compression – Refer to section “Compression” on page 2-60 for
details on setting payload compression.
•3xDES – Refer to the section “Triple DES” on page 2-62 for details on
setting the DES encryption.
•DES Key – Select the key from the drop-down list.
Modifying a Route
Selecting a route from the Routing table enables the Modify button. Clicking
the Modify button displays the Modify Route dialog shown in figure 2-8.
Figure 2-8
Modify Route dialog
The Modify Route dialog allows edits to be made to the fields as described
above.
QoS
NOTE
2-10 CDM-570/L, CDD-56X Parameter Editor User Guide
Note: If the QoS feature (FAST code) has not been purchased for this modem,
the QoS menu item will not be displayed.
Network
The QoS menu item is not displayed for receive-only network units such
as the CDD-56X.
Selecting the QoS (Quality of Service) menu item displays the dialog shown in
figure 2-9. Quality of Service is an optional modem/router feature. If this
feature is enabled, the user may select one of four Modes of QoS operation:
• Rule Max/Priority – QoS rules based on maximum bandwidth and priority
• Rule Min/Max – QoS rules based on minimum and maximum bandwidth
• Diff Serv– QoS rules based on Differentiated Services settings
• VLAN – QoS rules based on the user priority field in the VLAN header
Figure 2-9
QoS dialog, Max/Priority Mode
Enable Quality of Service
Selecting the Enable Quality of Service box enables QoS on this modem/
router.
Chapter 2 - Using Parameter Editor 2-11
Network
Enable SAR
Packet Segmentation and Reassembly (SAR) can be enabled for QoS. With this
feature, packets are made smaller to speed them through the network and
because of specified packet size restrictions for a given path.
SAR is an adaptive process; it will trigger only if the packet latency exceeds the
threshold value (default is 20 msec). Latency value is calculated based on the
satellite transmission bandwidth. The minimum segment size is limited to 480
bytes—excluding satellite HDLC header information—in order to avoid satellite overhead and consumption of CPU cycles.
Rules Table
The Rules table appears in the lower portion of the QoS dialog. Just above the
table is a button set that acts on the table, and consists of the Add, Remove,
Modify, Up/Down Arrow, and Clear buttons. When an existing rule is
selected, that rule can be repositioned in the table listing through the use of the
Up/Down Arrow buttons. Note, however, that the Default rule always occupies
the first row of the table and can not be repositioned.
Developing QoS Rules in a VMS Network
The optional QoS capabilities available in each modem/router may be utilized
whenever a modem will be handling high-priority traffic, such as video or
voice. While developing the QoS Rules to be applied to the unit, the type of traffic the modem is expected to handle must be considered.
Defining QoS Rules
The QoS mode that is chosen will determine the settable parameters for defining
QoS rules. An example of a dialog for adding a rule is shown below in
figure 2-10.
QoS Rules can be assigned to up to 32 different types of flows defined by the
user. Flows can be defined by any combination of Protocol (FTP, UDP, RTP,
etc.), Source/Destination IP (specific or range), and/or Layer 3 Source/Destination Port.
2-12 CDM-570/L, CDD-56X Parameter Editor User Guide
Network
Figure 2-10
Add Quality Of Service Rule dialog
QoS Rule Hierarchy
It is quite possible to have traffic that meets the definitions of several QoS
Rules. All traffic will be classified into the first QoS Rule that is a match, or fall
into the Default Rule. The most specific QoS Rule will always be first. For
example, a QoS Rule that identifies a Source and Destination IP Address will be
assigned ahead of a rule that just defines RTP protocol. QoS Rules that have the
same amount of variables defined are sorted as follows:
1. By Protocol.
Protocol Priority:
a. VOCE – Voice Real Time Protocol
b. VDEO – Video Real Time Protocol
c. RTPS – Real Time Protocol Signalling
d. RTP – All Real Time Protocols
e. FTP – File Transfer Protocol
f. HTTP – Hypertext Transfer Protocol
g. TELN – Telnet Protocol
h. SMTP – Simple Mail Transfer Protocol
i. SNMP – Simple Network Management Protocol
j. SQL – Structured Query Language Protocol
Chapter 2 - Using Parameter Editor 2-13
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