Network Administration: Quality of Service
231
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User
Guide\Dell_Astute_Network_Admin_QoS.fm
D E L L CO N F I D E N T I A L – P R E L I M I N A RY 8 / 9 / 16 - F O R P RO O F O N L Y
2
Click
Edit
and enter the fields:
–
Class of Service
— The CoS priority tag values, where zero is the
lowest priority and 7 is the highest priority.
–
Queue
— The queue to which the CoS priority is mapped.
DSCP to Queue
The DSCP to Queue
mapping determines the egress queues of the incoming
IP packets, based on their DSCP values. The original VPT (VLAN Priority
Tag) of the packet is unchanged.
By changing the DSCP to Queue mapping, the Queue schedule method, and
bandwidth allocation, it is possible to achieve improved quality of service in a
network.
Non-IP packets are always classified to the best-effort queue.
The following displays the mapping where queue 1 is lowest priority:.
To map DSCP to queues:
1
Click
Network Administration > Quality of Service
>
Global Settings
>
DSCP to Queue
.
The DSCP values in the incoming packet and its associated queues are
displayed.
Table 14-2.
x1008/P, x1018/P, x1026/P
x1052/P
x4012
DSCP Out Queue
DSCP0-15 Q1
DSCP16-31 Q2
DSCP31-47 Q3
DSCP48-63 Q4
DSCP Out Queue
DSCP 0-7 Q1
DSCP 8-15 Q2
DSCP 16-23 Q3
DSCP 24-31 Q4
DSCP 32-39 Q5
DSCP 40-47 Q6
DSCP 48-55 Q7
DSCP 56-63 Q8
DSCP Out
Queue
DSCP 0-7 Q1
DSCP 8-15 Q2
DSCP 16-23 Q3
DSCP 24-31 Q4
DSCP 32-39 Q5
DSCP 40-47 Q6
DSCP 48-55 Q7
DSCP 56-63 Q8