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User’s Manual of FGSW-2620VM / FGSW-2620PVM 
105
 
4.9.3.1 TOS/DSCP Configuration 
The TOS/DSCP page provides fields for defining output queue to specific DSCP fields. When TCP/IP’s TOS/DSCP mode is 
applied, the Managed Switch recognizes TCP/IP Differentiated Service Codepoint (DSCP) priority information from the 
DS-field defined in RFC2474.   
Enable TOS/DSCP for traffic classification and then the DSCP to priority mapping column is configurable, as the
 Figure 
4-9-5
 shows: 
 
 
Figure 4-9-5: 
QoS Configuration – TOS Priority 
 
The page includes the following fields: 
Object 
Description 
TOS/DSCP 
Enable
 / Disable internal traffic class ( 0~7) to map the corresponding IP DSCP 
value. 
DSCP 
The values of the IP DSCP header field within the incoming packet. 
0~63. 
Priority 
Specify which 802.1p priority to map the corresponding IP DSCP. 
The value is 0~7.