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4.3.10 Multicast
The multicast interface is shown as in Figure 4-32.
Multicast is a transmission mode of data packet. When there is multiple-host to receive the same data
packet, multiple-cast is the best option to reduce the broad width and the CPU load. The source host
can just send out one data to transit. This function also depends on the relationship of the group
member and group of the outer.
Here you can set multicast address and port. You also need to go to Live interface to set the protocol as
Multicast.
Figure 4-32
4.3.11 Qos
The QoS interface is shown as below. See Figure 4-33.
Qos (Quality of Service) is network security mechanism. It is a technology to fix the network delay and
jam problem and etc. For the network service, the quality of service includes the transmission bandwidth,
delay, the packet loss and etc. We can guarantee the transmission bandwidth, lower the delay, and
reduce the loss of the data packet and anti-dither to enhance the quality.
We can set the DSCP (Differentiated Services Code Point) of the IP to distinguish the data packet so
that the router or the hub can provide different services for various data packets. It can select the
different queues according to the priority of the packets and select the bandwidth of the each queue. It
can also discard at the different ratio when the broad bandwidth is jam.
Summary of Contents for DNA1982
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