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6.25 QoS
Quality of Service (QoS) is the ability to provide different priority to different applications,
users or data flows, or to guarantee a certain level of performance to a data flow. QoS
guarantees are important if the network capacity is insufficient, especially for real-time
streaming multimedia applications such as voice over IP or Video Teleconferencing,
since these often require fixed bit rate and are delay sensitive, and in networks where
the capacity is a limited resource, for example in cellular data communication. In the
absence of network congestion, QoS mechanisms are not required.
6.25.1 Global Settings
Here you can choose to use an 8-4-2-1 queuing scheme or a strict priority scheme, or
select the priority type to configure QoS policy.
Qos Policy:
Select the QoS policy rule.
Using the 8,4,2,1 weight fair queue scheme:
The switch will follow 8:4:2:1
rate to process priority queue from High to lowest queue. For example, while
the system processing, 1 frame of the lowest queue, 2 frames of the low queue,
4 frames of the middle queue, and 8 frames of the high queue will be
processed at the same time in accordance with the 8,4,2,1 policy rule.
Use a strict priority scheme:
Always the higher queue will be processed first,
except the higher queue is empty.
Priority Type:
There are 5 priority type selections available
—
Port-based
,
TOS
only
,
COS only
,
TOS first
, and
COS first
. Disable means no priority type is
selected.
Click
Apply
to have the configuration take effect.
Summary of Contents for IPES-2208CA
Page 28: ...20 LC connector to the transceiver...
Page 31: ...23 The illustration below shows an example of power over Ethernet application...
Page 40: ...32...
Page 46: ...38 IP Addressing interface...
Page 49: ...41 SNMP Agent Configuration interface...
Page 57: ...49...
Page 61: ...53 Port Statistics interfac...
Page 68: ...60 6 17 2Aggregator Status You can check the setting of Port aggregation in Status...
Page 73: ...65 RSTP Port Configuration interface...
Page 76: ...68 field and click Delete to remove it...
Page 84: ...76 6 24 2Switch Status You can see the status of VLAN setting in this function...
Page 89: ...81 highest priority Click Apply to have the configuration take effect...
Page 100: ...92 6 26 3 3 Port Status You can monitor the port Authorized state in this function...
Page 101: ...93 6 26 4 MAC Filtering You can block the un authorized MAC by switch in this function...
Page 102: ...94 6 26 5 Port Security You can block the un authorized MAC by oer port in this function...
Page 111: ...103 Straight through cables schematic Cross over cables schematic...