User's Manual Part 2

Tech-X Flex
®
(NG2) Tech-X Flex User Guide - Firmware v06.50
6-25
Intro
Overview
Wi-Fi
Ethernet
System
IP/Video
MoCA
RF
Specs
Table 6-13 Video QoS test - Setup parameters
Parameter Description
Channel Num
Channel Abbr
For multicast video only, if a channel guide was used, the channel number and
abbreviation that was selected in the previous screen. If no channel guide is
active, these fields do not appear. For more information on channel guides, see
About channel guides on page 6-53.
Multicast Stream IP
-or-
Destination IP Addr
IP address of the video stream. For multicast video, if you selected a channel
from the channel guide, this field is automatically populated.
The IP address specified must reflect the destination IP address for video stream
packets; that is, the first address contained in the IP packet headers. For a
multicast stream, this will be a multicast IP address, not an IP address of a host
on the network under test. For a unicast stream, this must be the IP address of
the destination device on the network, such as an STB. For a discussion on
multicast packet addressing and transport versus unicast, see About IP multicast
on page 6-43.
Multicast Stream
Port
-or-
Destination IP Port
The destination UDP port associated with packets that contain the stream under
test. The unit determines which packets should be included in the audio/video
quality measurement based on the destination IP address and destination UDP
port pair. For multicast video, if you selected a channel from the channel guide,
this field is automatically populated.
As an option, you can select All Ports Open from the drop-down list which
indicates to ignore the port and use the IP address exclusively for identifying
video stream packets. In the case of unicast streams where packets are
addressed to a network device such as an STB, it can be difficult to determine
the UDP port(s) in use. Therefore, this option allows traffic analysis based on IP
address alone. While the STB may be receiving some data that is not part of the
video stream, it is likely that most traffic will be video data that qualifies for
analysis.
NOTE: For the most accurate results with the All Ports Open option, run
the test once to discover the precise port number, then restart the test
using that specific port.
In summary:
• This field indicates the logical port that the unit will monitor for video traffic, for
the specified IP address.
•The All Ports Open option is only applicable to measuring unicast streams
(for example, video-on-demand) using passive mode. The option allows the
unit to determine the destination UDP port of the packets containing the
stream under test dynamically.
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