Belden IPG-4901 Instruction Manual

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 1
IPG-4901
WAN IP I/O Gateway for GV Node
Guide to Installation and Operation
13-3036-360-AB-M00
2018-05-17

2| IPG-4901
Document History
Document Number
Date of Publication
Notes
13-3036-360-AA-M00
2017-10-18
Initial Release.
13-3036-360-AB-M00
2018-05-17
Update for Release V1.1
Copyright and Trademark Notice
Copyright © 2015-2018, Grass Valley Canada. All rights reserved.
Belden, Belden Sending All The Right Signals, and the Belden logo are trademarks or registered trademarks of
Belden Inc. or its affiliated companies in the United States and other jurisdictions. Grass Valley, Miranda, IPG-4901,
iControl, and Densité are trademarks or registered trademarks of Grass Valley Canada. Belden Inc., Grass Valley
Canada, and other parties may also have trademark rights in other terms used herein.
Terms and Conditions
Please read the following terms and conditions carefully. By using IPG-4901 documentation, you agree to the
following terms and conditions.
Grass Valley hereby grants permission and license to owners of IPG-4901 to use their product manuals for their own
internal business use. Manuals for Grass Valley products may not be reproduced or transmitted in any form or by any
means, electronic or mechanical, including photocopying and recording, for any purpose unless specifically authorized
in writing by Grass Valley.
A Grass Valley manual may have been revised to reflect changes made to the product during its manufacturing life.
Thus, different versions of a manual may exist for any given product. Care should be taken to ensure that one obtains
the proper manual version for a specific product serial number.
Information in this document is subject to change without notice and does not represent a commitment on the part of
Grass Valley.
Warranty information is available in the Support section of the Grass Valley Web site (www.grassvalley.com).
Electrostatic Discharge (ESD) Protection
Electrostatic discharge occurs when electronic components are improperly handled and can result in
intermittent failure or complete damage adversely affecting an electrical circuit. When you remove and
replace any card from a frame always follow ESD-prevention procedures:
Ensure that the frame is electrically connected to earth ground through the power cord or any other means if
available.
Wear an ESD wrist strap ensuring that it makes good skin contact. Connect the grounding clip to an unpainted
surface of the chassis frame to safely ground unwanted ESD voltages. If no wrist strap is available, ground
yourself by touching the unpainted metal part of the chassis.
For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and
10 megohms.
When temporarily storing a card make sure it is placed in an ESD bag.
Cards in an earth grounded metal frame or casing do not require any special ESD protection.
Recycling
Visit www.grassvalley.com for recycling information.

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 3
Certification and Compliance
Safety of Laser Modules
This equipment incorporates modules containing Class 1 lasers. These modules are certified by the
manufacturer to comply with:
IEC/EN 60825-1 Safety of laser products
IEC 60950-1 Safety of information technology equipment
Restriction on Hazardous Substances (RoHS)
IPG-4901
部件名称 Part name
有毒有害物质或元素 (Toxic or Hazardous Substances and Elements)
铅(Pb)
汞(Hg)
镉(Cd)
六价铬
(Cr6)
多溴联苯
(PBB)
多溴二苯
(PBDE)
电缆及电缆组件 Cables and Cable Assemblies
O
O
O
O
O
O
电路模块 Circuit Modules
X
O
O
O
O
O
组装风扇 Fan Assemblies
X
O
O
O
O
O
IPG-4901-4SRP
部件名称 Part name
有毒有害物质或元素 (Toxic or Hazardous Substances and Elements)
铅(Pb)
汞(Hg)
镉(Cd)
六价铬
(Cr6)
多溴联苯
(PBB)
多溴二苯
(PBDE)
电路模块 Circuit Modules
X
O
O
O
O
O
O: 表示该有毒有害物质在该部件所有均质材料中的含量均在SJ/T 11363-2006规定的限量要求以下。
O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement in SJ/T11363-2006.
X: 表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJ/T 11363-2006规定的限量要求。
X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials for this part is above
the limit requirement in SJ/T11363-2006.
技术条款解释：
此声明所依据之数据由Grass Valley环境管理部门向我们的部件供应商获取。Grass Valley 公司相信此信息的正确性，但由于数据
来源于公司外部，我们无法保证它的完整和准确。所有这些特性可能在未获通知的情况下更改。
Technical explanations:
This statement is based on the information provided by our suppliers of components and collected through Grass Valley’s
environmental management system. Grass Valley believes this environmental information to be correct but cannot guarantee its
completeness or accuracy as it is based on data received from sources outside our company. All specifications are subject to
change without notice.

4| IPG-4901
Electromagnetic Compatibility
This equipment has been tested for verification of compliance with FCC Part 15, Subpart B requirements for
Class A digital devices.
NOTE: 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 and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
This equipment has been tested and found to comply with the requirements of the EMC directive
2004/108/CE:
EN 55022 Class A radiated and conducted emissions
EN 61000-3-2 Harmonic current emission limits
EN 61000-3-3 Voltage fluctuations and flicker limitations
EN 61000-4-2 Electrostatic discharge immunity
EN 61000-4-3 Radiated electromagnetic field immunity –RF
EN 61000-4-4 EFT immunity
EN 61000-4-5 Surge immunity
EN 61000-4-6 Conducted immunity
EN 61000-4-8 EMP immunity
EN 61000-4-11 Voltage-dips, short-interruption and voltage variation immunity

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 5
Table of Contents
1IPG-4901 WAN IP I/O Gateway for GV Node...........................................................................7
1.1 Introduction ......................................................................................................................................... 7
1.2 Features.............................................................................................................................................. 7
1.3 Functional Block Diagrams ................................................................................................................. 8
1.3.1 Aggregation Mode.................................................................................................................. 8
1.3.2 Redundancy Mode................................................................................................................. 9
1.4 Front Card-edge Interface................................................................................................................. 10
1.5 Control options.................................................................................................................................. 10
2Installation..............................................................................................................................11
2.1 Installation of Rear Connector Panel................................................................................................ 11
2.2 IPG-4901 Card Installation................................................................................................................ 11
2.3 Rear Panel Layout and Connectors.................................................................................................. 11
3Local control using the GV Node’s control panel................................................................12
3.1 Status Monitoring.............................................................................................................................. 13
4Remote control using iControl..............................................................................................14
4.1 The iControl graphic interface window.............................................................................................. 14
4.2 Gateway panel.................................................................................................................................. 17
4.2.1 Gateway Availability............................................................................................................. 17
4.2.2 Gateway Config window ...................................................................................................... 18
4.2.3 Gateway –IN tab ................................................................................................................. 25
4.2.4 How to set up the timing on the IPG-4901........................................................................... 28
4.2.5 Gateway –System tab......................................................................................................... 29
4.3 Network panel................................................................................................................................... 30
4.3.1 Network panel –Settings tab............................................................................................... 30
4.3.2 Network panel –Status tab.................................................................................................. 31
4.3.3 Network Config panel –Statistics tab.................................................................................. 32
4.4 Reference Panel ............................................................................................................................... 32
4.4.1 Reference Panel - Selection Tab......................................................................................... 32
4.4.2 Reference Panel –PTP tab................................................................................................. 32
4.4.3 PTP Failover ........................................................................................................................ 34
4.5 Test panel ......................................................................................................................................... 34
4.6 Factory/Presets Panel....................................................................................................................... 36
4.6.1 Factory................................................................................................................................. 37
4.6.2 Profiles................................................................................................................................. 37
4.7 Alarm Config Panel........................................................................................................................... 40
4.8 Info Panel.......................................................................................................................................... 44
4.8.1 Info Panel –Info tab............................................................................................................. 44
4.8.2 Info Panel –Technical Support tab...................................................................................... 46
5GV Node Manager..................................................................................................................46
5.1 Possible Data Flow based GV Node Manager setting ..................................................................... 48
5.1.1 Aggregation Mode................................................................................................................ 48
5.1.2 Redundancy Mode............................................................................................................... 50

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6Specifications ........................................................................................................................51
7Contact Us..............................................................................................................................52
Grass Valley Technical Support .................................................................................................................52
Corporate Head Office................................................................................................................................52
ANNEX 1 –Local Menu ...............................................................................................................53
ANNEX 2 –Firmware upgrade....................................................................................................56

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 7
1 IPG-4901 WAN IP I/O Gateway for GV Node
1.1 Introduction
The GV Node IP Gateway (IPG-4901) plug-and-play module from Grass Valley, a Belden Brand, is a 3 RU single slot
module for the GV Node frame, which offers bidirectional fiber IP connectivity.
Not all IP signals are created equal. While Grass Valley provides a very complete IP solution, there will still be
requirements to provide conversion to/from other equipment that supports IP standards that are incompatible. The
IPG-4901 IP Gateway provides a robust feature set for normalizing variances in IP signals sent to GV Node or GV
Matrix I/O.
WAN IP connectivity: The IPG-4901 leverages the full SMPTE ST 2022-7 Class A specification to ensure
uninterrupted reception of high jitter signals from remote sources and SW based transmitters. The IPG-4901 can be
fitted with multimode or singlemode SFPs to provide connectivity up to 10 km (6.21 mi.).
Signal conversion with audio DEM/EMB: In conjunction with the GV Node 40G aggregation ports, the IPG-4901
can be used to convert SMPTE ST 2022-6 and AES67 signals from the WAN to SMPTE ST 2110-20/30/40 signals on
the LAN. Each IPG- 4901 module has bidirectional 10G Ethernet ports that support up six 3 Gb/s sources or nine HD
sources with AES67 audio DEM/EMB.
Signal Alignment: The IPG-4901 provides a full alignment capability with up to two frames with respect to the GV
Node switching fabric, and is available for any SMPTE ST 2022-6 signals and AES67 audio, in both aggregation and
redundancy modes.
Alignment capability provides a clean switching of any of the sources from the IPG-4901.
The IPG-4901 I/O module may be combined in the same chassis with other GV Node or GV Matrix modules to create
an even more versatile distributed edge-routing node.
The GV Node IP Gateway can be controlled by the advanced GV Convergent SDN platform, offering unified control
across COTS IP switches and SDI routing/processing infrastructures, as well as by the proven iControl systems.
1.2 Features
Two dual-network interfaces supporting 10 GigE SFP+ ports with either:
oLong range single-mode optical connectors.
oShort range multi-mode optical connectors.
In aggregation mode each module connects up to 6x6 3G or 9x9 HD SMPTE ST 2022-6 video sources along
with AES67 de-embedding/embedding of up to 16 audio channels per source.
oAugments SMPTE ST 2022-6 video payload with individual audio streams using VSF TR-04.
oSupports bursty server-originated sources with SMPTE ST 2022-6 core.
In redundancy mode each module connects up to 3x3 3G or 5x5 HD video sources along with AES67 de-
embedding/embedding of up to 16 audio channels per source.
oFull compliance to SMPTE ST 2022-7 Class A of all IP essences.
Input signal alignment with up to 2 frames.
Support of ATDM connection to the GV-Node through the IFM-2T (Internal fabric module with 2Tb switching
capacity). This connection separates audio to GV-Node.
There are 2 options: Pass-through & MDX, for audio embedding/de-embedding.
GV Node audio option needs to be active in order to exploit this new feature of the IPG-4901.

8| IPG-4901
Support of PTP on the media port with fail-over redundancy for AES67 streams. Supports both AES67 and
SMPTE ST 2059 profiles.
Support of DiffServ for network traffic provides categorization of flows into QoS classes.
Compatible with GV Node and GV Matrix platforms.
Configured and controlled by Grass Valley’s GV Convergent SDN platform, or by the proven iControl system.
Uses Universal Reference Signal from the frame controller.
1.3 Functional Block Diagrams
1.3.1 Aggregation Mode
Figure 1-1 IPG-4901 Functional Block Diagram - Aggregation mode with GV-Node audio option enabled

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 9
1.3.2 Redundancy Mode
Figure 1-2 IPG-4901 Functional Block Diagram - Redundancy mode with GV-Node audio option enabled

10 | IPG-4901
1.4 Front Card-edge Interface
The front card-edge of the IPG-4901 incorporates
two elements:
Status LED
Select Button
These items duplicate features accessed from the
GV Node local control panel.
Figure 1-3 Front card-edge layout
1.5 Control options
The IPG-4901 can be controlled in two different ways:
The local control panel on the GV Node can be used to move through a menu of status reports and parameter
settings (see section 3).
Grass Valley’s iControl system can be used to access the card’s operating parameters from a remote computer,
using a convenient graphical user interface (GUI) (see section 4).
Select Button
IRD-3802
Status LED
Status
Select
IPG-4901

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IPG-4901 | 11
2 Installation
2.1 Installation of Rear Connector Panel
The IPG-4901 card is designed to fit into Grass Valley’s GV Node IP aggregation, processing and edge routing
platform. Each modular card designed for this platform is associated with a rear connector panel that provides both
internal and external connectivity for the card.
A single rear connector panel is available for the IPG-4901:
IPG-4901-4SRP Single-slot-width panel for GV Node
The card and the rear panel can be installed with the frame power on.
The rear connector panel must be installed with the card out of the frame.
To install the connector panel:
1. If a card is installed in the slot whose rear panel is being changed, remove it by tilting the swivel handle on the
front of the card to lever the connectors apart, then using the handle to pull the card straight out of the slot.
2. Remove the existing rear panel (either blank or belonging to an existing card that is being changed) by
releasing the captive screw at the bottom of the panel.
3. Position the new panel and secure it in place with the captive screw(s) at the bottom.
2.2 IPG-4901 Card Installation
Once the rear connector panel is in place, install the IPG-4901 card as follows:
1. Open the front door of the GV Node frame.
2. Slide the IPG-4901 card into the slot (swivel handle at the top) and push gently on the handle to seat the
connectors.
3. Close the front door of the frame.
2.3 Rear Panel Layout and Connectors
Two 10 Gb Ethernet interfaces (each with Tx and Rx) on optical fiber or twinax cable. SFP+ modules and matching
fiber or electrical connectors are required for the interface.
Figure 2-1 IPG-4901-4SRP Rear Panel

12 | IPG-4901
3 Local control using the GV Node’s control panel
The GV Node’s local control panel is fastened to the front of the controller card, and accessed through an aperture in
the frame door.
To access the menu for this IPG-4901, touch the virtual button corresponding to the card (identified by card type and
slot number) in the home screen.
The control section of the panel displays two lines of text, each 16 characters in length, and four virtual pushbuttons.
The functionality of the pushbuttons is as follows:
[+] [–] Used for up/down menu navigation and value modification
[SELECT] Gives access to the next menu level. When a parameter value is shown, pushing this button once
enables modification of the value using the [+] and [–] buttons; a second push confirms the new value
[ESC] Cancels the effect of parameter value changes that have not been confirmed; pushing [ESC] causes the
parameter to revert to its former value.
Pushing [ESC] moves the user back up to the previous menu level. At the main menu, [ESC] does not
exit the menu system. To exit, re-push the [SELECT] button for the card being controlled.
If no controls are operated for 30 seconds, the controller reverts to its normal standby status, and the selected card’s
STATUS reverts to its normal operating mode.
Use the control panel buttons to navigate through the menu, as described above.
The complete menu structure is shown in ANNEX 1 –Local Menu, beginning on page 53.

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IPG-4901 | 13
3.1 Status Monitoring
The status of the IPG-4901 is reported by the outline of the card’s access button in the home page. The outline’s color
indicates error status:
To determine the type of error that causes the error status, select the card and scroll down the status items in the
menu.
The panel will always show the most severe detected error status that it is configured to display, with green
representing no error, and flashing red the most severe error.
Note –the color associated with most errors can be configured in the iControl interface –see Alarm Config
Panel on page 40.
The chart shows how the various error conditions that can be flagged on the IPG-4901 affect the status report.
If a cell is gray, the error condition cannot cause the LED to assume that status
If more than one LED status is possible for a particular error condition, the status is configurable.
The factory default status, if available, is shown by a 
Error Condition
Status Report
Green
Yellow
Red
Flashing
Red
Hardware failure –cooling fans

Wrong or missing Rear

Ethernet Port 1 Link Status

Ethernet Port 2 Link Status

Internal test pattern enabled

Overall Gateway Status


14 | IPG-4901
4 Remote control using iControl
The IPG-4901 can be remotely controlled using Grass Valley’s iControl system.
This manual describes the control panels associated with the IPG-4901 and their use.
Please consult the iControl User’s Guide for information about setting up and operating iControl.
In iControl Navigator or iControl Websites, double-click on the IPG-4901 icon to open the control panel.
4.1 The iControl graphic interface window
The basic window structure for the IPG-4901 is shown in Figure 4-6. The window identification line gives the card type
(IPG-4901) and the slot number where the card is installed in its Densité frame.
There are four main sections in the window itself, as identified in the figure:
Section 1. The top section displays nine icons on the left. These icons report different statuses such as card
communication status, gateway status, health status, and card operation mode.
Icon # 1 2 3 4 5 6 7 8 9
Move the mouse over an icon and a status message appears below the icon providing additional information.
If there is an error, the error status message appears in the message area without mouse-over.
If there are multiple errors, the error messages cycle so all can be seen.
1
2
3
Figure 4-1
IPG-4901 iControl graphic interface window
4

GUIDE TO INSTALLATION AND OPERATION
IPG-4901 | 15
The icon whose status or error message is shown is highlighted with a mauve background.
The table below describes the various status icons that can appear, and how they are to be interpreted.
In cases where there is more than one possible interpretation, read the error message in the iControl window to
see which applies.
Table –iControl Status Icon interpretation
Icon #1 –Manual Card Configuration
(green)
Remote card control activated. The iControl interface can be used to operate the card.
(yellow)
Local card control active, The card is being controlled using the GV Node’s local control
panel, as described in section 4. Any changes made using the iControl interface will have
no effect on the card.
Icon #2 –Gateway status
(green)
All gateways are OK.
(red)
At least one gateway is down.
Icon #3 –SDI Input Status
(green)
All SDI inputs from fabric detected and valid.
(red)
At least one SDI input from fabric is in error.
Reference mismatch.
Video/TRS error.
Icon #4 –Reference Status
(green)
Reference present, supported and locked.
(red)
Reference missing. Not locked.

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Icon #5 –PTP Status
(green)
Selected PTP (ETH1 or ETH2) present, valid and locked
(red)
Selected PTP not present
Selected PTP not valid
Selected PTP not locked
Icon #6 –ETH1 Status
(green)
IP link up and active.
(red)
No link (port down).
Icon #7 –ETH2 Status
(green)
IP link up and active.
(red)
No link (port down).
(gray)
Ethernet port not used.
Icon #8 –Health Monitoring
(green)
Hardware OK.
(red)
Hardware Health Monitoring (Hardware fault detected).
If this icon appears flashing red, you need to call Technical Support
Icon #9 –Operation Mode
(green)
Operation mode: process –normal processing of the input signal.
(yellow)
Operation mode: Enabled, but no signal to process.
(yellow)
Operation mode: TEST –color bar and audio test tones enabled on at least one gateway.

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IPG-4901 | 17
Section 2. The left portion of the window contains selection buttons for all of the individual panels, which become
highlighted when they are selected. The main window section (3) then displays the selected panel, all of which are
described in detail below.
Section 3. The main section displays the panel selected in section 2. It may contain multiple tabs to access any
appropriate sub-panels.
Section 4. The lower left corner of the window identifies the Preset currently in use or “Custom” if none is applicable.
4.2 Gateway panel
The Gateway panel provides resources for configuring and managing the gateways on the IPG-4901.
The Gateway Status icons at the top of the panel show the current status of all eighteen gateways on the IPG-4901:
Top two rows: the nine OUT-from-fabric gateways
Bottom two rows: the nine IN-to-fabric gateways
Click the Gateway Table button to open the pop-up Gateway Config window
4.2.1 Gateway Availability
Although the IPG-4901 has 18 gateways (9 IN and 9 OUT), not all are always available, due to bandwidth and
configuration requirements. See Section 5.3.1 - Network Config Panel - Settings tab to select the operation mode.
ETH2
Available Gateways
Notes
Enable
Operation Mode
OUT
IN
OFF
N/A
1-5
10-14
Only ETH1 gateways in use.
ON
Redundancy
1-5
10-14
Each gateway uses both ETH1 and ETH2
with identical stream addresses.
Aggregation
All (1-9)
All (10-18)
ETH1 and ETH2 gateways in use.
Figure 4-2
Gateway panel –upper portion

18 | IPG-4901
Gateway-to-ETH port associations:
OUT
Gateways
IN
Gateways
ETH Port
1-5
10-14
ETH1
6-9
15-18
ETH2
NOTE –a Gateway must be ENABLED in the GV Node Manager before it can be controlled from the iControl
interface. See page 46 for instructions.
4.2.2 Gateway Config window
This window shows the current configuration and status of all gateways on the card, and provides controls to modify
their settings.
Figure 4-3 Gateway Config table

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IPG-4901 | 19
Enter data and configure settings as shown in this figure:
Gateway Name
Each Gateway is linked to a GV Node fabric input or output. In the Gateway column, we have the fabric I/O
identification on the 1st line and the gateway name on the 2nd line. The gateway name can be edited –select the text
and type a new name (up to 19 characters).
Default names are GATEWAY 1 through GATEWAY 18.
Changed value is pending prior to acceptance
Gateway Direction
The arrow in the Dir column shows the direction of signal flow through the gateway.
There are nine OUT gateways that connect the fabric output to the rear-panel IP stream outputs:
There are nine IN gateways that connect the rear-panel IP streams to the GV Node fabric inputs:
Fabric-to-IP Gateway (OUT)
Gateways 1 - 9
IP-to-fabric gateway (IN)
Gateways 10 - 18
Figure 4-4 Gateway Table data entry

20 | IPG-4901
Stream Address:
When ETH2 is disabled or in Aggregation mode, we only have one IP stream associated with each Gateway.
When ETH2 Operation mode is set to Redundancy, we have two IP streams associated with the Gateway –
Primary Stream and Redundancy stream. The gateway will be linked to the primary stream when it is valid. If
the main stream is in error, the gateway will fall back to the redundancy stream. The fallback may generate an
error on the SDI output.
Stream Port: Shows the port associated with the stream. Edit the port by selecting the text and typing a new value.
IGMPv3 Source: On IN-to-fabric (gateways 10-18) we have an additional setting: IGMPv3 source. This is used when
receiving multicast streams. In this protocol, the card deals with a switch to subscribe to one or many streams that are
coming from different IP addresses.
When receiving multicast streams, the “stream address” is used to talk to a “group” while the “IGMPv3 source”
indicates the exact source from which we want to receive the stream.
When receiving unicast streams, IGMPv3 protocol is not used.
When this field is set to 0.0.0.0, IGMPv3 protocol will request multicast streams for all sources.
Type directly into the data boxes to enter stream addresses and port numbers.
Enter values for both SMPTE 2022-6 and AES-67 streams as required.
Changed value is pending prior to acceptance
Parameter
Values
Default value
Notes
Stream Address
(SMPTE 2022-6
and AES-67)
0.0.0.0 to
255.255.255.255
0.0.0.0
OUT from fabric to IP
255.255.255.255 is refused (not applied).
Unicast addresses are accepted. If the ARP is
not resolved, it will be highlighted in Orange.
IP to IN to fabric
Multicast addresses are accepted (224.0.0.0
through 239.255.255.255).
Only ETH1 IP address and ETH2 IP address
are accepted as the Unicast address.
Stream Port (S.
Port)
(primary and
redundancy
stream)
0 to 65535
SMPTE 2022-6:
10000
AES-67: 5004
IGMPv3 Source
(primary and
redundancy
stream)
(SMPTE 2022-6
and AES-67)
0.0.0.0 to
255.255.255.255
0.0.0.0
IP to IN to fabric only.
This is used when receiving multicast streams.
In this protocol, the card deals with a switch to
subscribe to one or many streams that are
coming from different IP addresses.
When receiving multicast streams, the
“stream address” is used to talk to a
“group” while the “IGMPv3 source”
indicates the exact source from which
we want to receive the stream.
When receiving unicast streams,
IGMPv3 protocol is not used.
When this field is set to 0.0.0.0, IGMPv3