1-13
Table 1-7 Queue-scheduling sequence of SDWRR
Scheduling
algorithm
Queue-scheduling sequence Description
WRR 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1
SDWRR 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0
0 indicates packets in
queue0
1 indicates packets in
queue1
Flow-based Traffic Accounting
The function of flow-based traffic accounting is to use ACL rules in traffic classification and perform
traffic accounting on the packets matching the ACL rules. You can get the statistics of the packets you
are interested in through this function.
Burst
The Burst function can provide better packet cache function and traffic forwarding performance. It is
suitable for networks where
z Large amount of broadcast/multicast packets and large burst traffic exist.
z Packets of high-rate links are forwarded to low-rate links or packets of multiple links with the equal
rates are forwarded to a single link that is of the same rate as that of the incoming links.
Although the burst function helps reduce the packet loss ratio and improve packet processing capability
in the networks mentioned above, it may affect QoS performance. So, use this function with caution.
Traffic mirroring
Traffic mirroring identifies traffic using ACLs and duplicates the matched packets to the destination port.
For information about port mirroring, refer to the Mirroring module of this manual.
QoS Configuration
QoS Configuration Task List
Complete the following tasks to configure QoS:
Task Remarks
Configuring Priority Trust Mode
Optional
Configuring Priority Mapping Optional
Setting the Priority of Protocol Packets
Optional
Marking Packet Priority Optional
Configuring Traffic Policing Optional
Configuring Traffic Shaping Optional
Configuring Traffic Redirecting Optional
Configuring VLAN Mapping
Optional
Configuring Queue Scheduling
Optional
Collecting/Clearing Traffic Statistics Optional
