3 ip dscp priority – Planet Technology SGSD-1022 User Manual
Page 233
User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
233
4.10.2.3 IP DSCP Priority
The DSCP is six bits wide, allowing coding for up to 64 different forwarding behaviors. The DSCP retains backward
compatibility with the three precedence bits so that non-DSCP compliant, TOS-enabled devices, will not conflict with the DSCP
mapping. Based on network policies, different kinds of traffic can be marked for different kinds of forwarding.
The DSCP default values are defined in the following table. Note that all the DSCP values that are not specified are mapped to
CoS queue 0.
IP DSCP Value
CoS Queue
0, 8
0
10, 12, 14, 16, 18, 20, 22, 24
1
26, 28, 30, 32, 34, 36, 38, 40, 42
2
46, 48, 56
3
Table 4-10-3
IP DSCP to CoS Queue Mapping
Figure 4-10-6 IP DSCP Priority page screenshot
The page includes the following fields:
Object
Description
DSCP Priority Table
Shows the DSCP Priority to CoS queue map.
Class of Queue Service
Value
Maps the selected DSCP Priority value to a CoS output queue.
Note that queue “0” represents low priority and “3” represent high priority.