Siqura TC620-PID, Руководство пользователя

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TC620-PID
Page 70
Note on FloodGuard:
FloodGuard is a Siqura™ proprietary stream control mechanism that can
be enabled/disabled independently for each video and sampled data transmitter. FloodGuard
throttles the transmitter when it no longer receives control messages from the receiver, thereby
preventing the transmitter from flooding the network.
FloodGuard only works when enabled on both the transmitter and the receiver, and when the
transmitter sends to a unicast address.
When a transmitter is enabled, it opens a control receive port with the port number equal to its
source port 1. This port listens for control packets from the destination receiver. When
no FloodGuard packets come in during the time set for the
FloodGuard throttle delay , the
receiver is expected to have disappeared (powered off, receiver disabled, network problem, etc.)
and the stream is 'throttled'. In throttled mode the transmitter - in order to contact the intended
receiver (again) - sends empty packets into the network at an interval determined by the
FloodGuard throttle interval parameter. After reception of a valid FloodGuard packet the
transmitter immediately resumes streaming.
Stream Manager and FloodGuard