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5 Configuration
Enabled disables the limit.
Rate (64-1024000): This field allows you to enter the data rate, in Kbits per second, will be the limit for the
selected port. The value is between 64 and 1024000.
Click Apply to set the bandwidth control for the selected ports.
QoS > 802.1p/DSCP/ToS
QoS is an implementation of the IEEE 802.1p standard that allows network administrators to reserve
bandwidth for important functions that require a larger bandwidth or that might have a higher priority, such as
VoIP (voice-over Internet Protocol), web browsing applications, file server applications or video conferencing.
Thus with larger bandwidth, less critical traffic is limited, and therefore excessive bandwidth can be saved.
The following figure displays the status of Quality of Service priority levels of each port, higher priority means
the traffic from this port will be first handled by the switch. For packets that are untagged, the switch will
assign the priority depending on your configuration.
Select QoS Mode: Specifies the QoS mode to be 802.1p, DSCP or ToS.
Queuing Mechanism:
Strict Priority: Denoting a Strict scheduling will set the highest queue to be emptied first while the
other queues will follow the weighted round-robin scheduling scheme
WRR: Use the weighted round-robin (WRR) algorithm to handle packets in an even distribution in
priority classes of service.
Click Apply for the settings to take effect.
From Port / To Port: Defines the port range which the port packet priorities are defined.
Priority: Defines the priority assigned to the port. The priorities are Highest, High, Medium and Low.
Click Apply for the settings to take effect.
QoS > TCP/UDP Port Priority Settings
When using the TCP/UDP Port Priority mechanism, the packet is classified based on the TCP/UDP field
priority in the TCP/UDP priority table entries. The TCP/UDP port number now supports with IPv0034.
Figure 5.78 – QoS > 802.1p/DSCP/ToS
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