3Com 8800 Configuration Manual page 413

3Com Switch 8800 Configuration Guide
2) Use WRR algorithm for the queues 0 to 5. Set the queues 0, 1 and 2 into WRR
queue 1, with weight respectively as 20, 20 and 30; set the queues 3, 4 and 5 into
WRR queue 2, with weight respectively as 20, 20 and 40. Use SP algorithm for the
queues 6 and 7.
[SW8800-GigabitEthernet7/1/1] queue-scheduler wrr group1 0 20 1 20 2 30 group2
3 20 4 20 5 40
[SW8800] display qos-interface GigabitEthernet7/1/1 queue-scheduler
GigabitEthernet7/1/1 Port scheduling:
QID:
-----------------------------------
0 :
1 :
2 :
3 :
4 :
5 :
6 :
7 :
33.4.6 WRED Parameters Configuration Example
I. Network requirements
Set WRED parameters and drop algorithm for packets at the port GE7/1/1: Configure
parameters for WRED 0; outbound queue ID is 7; green-min-threshold is 150;
green-max-threshold is 500; green-max-prob is 5; yellow-min-threshold is 100;
yellow-max-threshold is 150; yellow-max-prob is 10; red-min-threshold is 50;
red-max-threshold is 100; red-max-prob is 15; exponent is 10; the port is in WRED drop
mode; import the parameters of WRED 0.
II. Network diagram
VLAN2, VLAN2,
1.0.0.1/8 1.0.0.1/8
PC1 PC1
Figure 33-11 Network diagram for WRED parameters configuration
scheduling-group
wrr , group1
wrr , group1
wrr , group1
wrr , group2
wrr , group2
wrr , group2
sp
sp
GE7/1/8 GE7/1/8
GE7/1/2 GE7/1/2
GE7/1/1 GE7/1/1
weight
20
20
30
20
20
40
0
0
VLAN3, VLAN3,
2.0.0.1/8 2.0.0.1/8
PC2 PC2
33-29
Chapter 33 QoS Configuration