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2. Define stream page name(s) in the Setup — Pages view (not strictly necessary).
3. Join multicasts in the Multicasts — Join view or in the Multicasts — Streams view.
5.2.2 OTT Input (OTT Engine Option Only)
1. Define the OTT channel manifest URLs and channel names in the OTT — Channels view. Leave
the Threshold and VBC threshold settings at default values for now. Remember to tick the Enable
box in the dialog box. If you have multiple OTT engines installed (1 to 50 are allowed) then select
which engine to assign to the channel. Any number of OTT channels can be assigned to each
OTT engine. Each engine works in parallel to each other.
Note: When monitoring both multicast (UDP) and OTT (TCP) traffic, we recommend using different
network interfaces. Mixing the two traffic types on the same network can have unwanted impact on
the monitored signals. The interface used for OTT traffic is controlled using the Setup — Routing
view.
2. Inspect the OTT monitoring progress using the OTT — Active testing dialog. Useful information
on OTT monitoring can be found in Appendix C.
5.3 Monitoring
When input signal parameters have been set, the signals may be monitored.
For Ethernet multicasts the relevant monitoring views are Main, Alarms, Multicasts, MW, Traffic and
Ethernet. If the probe is equipped with the ETR 290 and/or the OTT option then the views ETR 290 and
OTT are of relevance as well.
Ethernet monitoring hints are found in B Appendix: Monitoring Practices.
5.4 Adjusting Alarm Thresholds
When the probe inputs and streams have been defined using default thresholds, the result will usually
be a number of more or less permanent alarms, some which may not be relevant under the current
circumstances. In order for the user to get rid of unwanted alarms, the probe provides alarm filtering
functionality in the form of alarm thresholds and alarm on/off selection.
Multicasts
By default Ethernet thresholds are set to raise alarms when service affecting errors occur, that are
caused by the network. There may however be reasons for these thresholds to be altered, for instance to
reflect receiver robustness in the case of IAT, or to reflect a TS into IP mapping different from the default
(7TS/UDP). Creating a new threshold template is done either by copying an existing one and altering the
copy, or by creating a new threshold template from scratch. The Ethernet thresholds are defined in the
VB3xx 10G Probe User's Manual version 5.3
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