The system supports the following three priority modes.
First-In-First-Out
All-High-before-Low
Weight-Round-Robin
Low weight: You can select 0 ~ 7 from the drop-down list.
High weight: You can select 0 ~ 7 from the drop-down list.
2.8.2 Class of Service Configuration - 1
Choose
QoS Setting
>
Port, 802.1p, IP/DS based
, and the following page appears.
The COS of port supports the following mode.
Based on port
Based on 802.1p: The priority is determined according to the value of
802.1p
(bit [15:13]) in the
VLAN Tag. Packets in which values of
802.1p
(bit [15:13]) are 000-011 map to lower priority.
Packets in which values of
802.1p
(bit [15:13]) are 100-111 map to higher priority.
Based on IP / DS:
For IPv4 packets, the priority is determined according to the value of
TOS [5:0]
in the header.
Packets in which values of
TOS [5:0]
are 101110, 001010, 010010, 011010, and 11x000 map to
higher priority. Packets in which
TOS [5:0]
are other values map to lower priority.
2.8.3 Class of Service Configuration - 2
Choose
QoS Setting
>
TCP/UDP Port Based
and the following page appears. COS based on TCP/UDP port
specifies the priority queues of packets or discards designated protocol packets according to the application
layer protocols of packets received at the port. COS supports classifying packets into corresponding priority
queues or discards packets according to the port in the range of ports 1-65535, besides certain known protocols,
such as FTP, telnet, and SNMP.
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