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D-Link DCS-6116 User Manual
Section 3 - Configuration
Multicast
Enable Multicast:
Click the items to display the detailed configuration information.
Select the Always multicast option to enable multicast for stream 1 ~ 4. Unicast video
transmission delivers a stream through point-to-point transmission; multicast, on the
other hand, sends a stream to the multicast group address and allows multiple clients
to acquire the stream at the same time by requesting a copy from the multicast group
address. Therefore, enabling multicast can effectively save network bandwidth.
Multicast RTP video, audio port/ Multicast RTCP video, audio port:
The ports can
be changed to values between 1025 and 65535. The multicast RTP port must be an
even number and the multicast RTCP port number is the multicast RTP port number
plus one, and thus is always odd. When the multicast RTP port changes, the multicast
RTCP port will change accordingly.
Multicast TTL [1~255]:
The multicast TTL (Time To Live) is the value that tells the
router the range a packet can be forwarded.