Manual

XMS-1024P

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LUX-UG-XMS-1024P Vers: 081314

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WRR-Mode (Weight Round Robin Mode): In this mode packets in all Queues are sent

in order, based on the Weight Value for each Queue. In this mode, every Queue can

be assured of a certain level of service. The Weight Value indicates the occupied pro-

portion of the resource. WRR-Mode overcomes the main disadvantage of SP-Mode

Queue. In WRR-Mode the Queues are Scheduled in order. The service time for each

queue is not ﬁ xed. If a Queue is empty, the next Queue will be Scheduled. This allows

the Bandwidth resources to be made full use of. The default Weight Value ratio of

TC0, TC1, TC2 and TC3 is 1:2:4:8.

Figure 9-5 WRR-Mode

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SP+WRR-Mode (Strict-Priority+Weight Round Robin Mode): In this mode, the Switch

provides two Scheduling Groups: the SP Group and the WRR Group. Queues in the SP

Group are Scheduled based on Strict-Priority Mode while the Queues inside the WRR

Group follow WRR Scheduling. In SP+WRR mode, TC3 is in the SP Group and TC0,

TC1 and TC2 belong to the WRR Group. The Weight Value ratio of TC0, TC1 and TC2

is 1:2:4. When Scheduling Queues in this Mode, the Switch allows TC3 to occupy all

available bandwidth following the SP-Mode scheduling and then allows TC0, TC1 and

TC2 to use the WRR-Mode schedule according to the ratio 1:2:4 respectively.

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Equ-Mode (Equal-Mode): In this mode, all the Queues occupy the bandwidth equally.

The weight value ratio of all the queues is 1:1:1:1.

The QoS module is used for Trafﬁ c Control and Priority Conﬁ guration, including

three submenus:

DiffServ, Bandwidth Control and Voice VLAN.