3Com 5500-EI PWR Install Manual page 694

clients PC 4 through PC 6 are connected to Ethernet 1/0/3 of the switch. Server 1 (the
database server), Server 2 (the mail server), and Server 3 (the file server) are connected
to Ethernet 1/0/2 of the switch.
Configure priority marking and queue scheduling on the switch to mark traffic flows
accessing Server 1, Server 2, and Server 3 with different priorities respectively and assign
the three traffic flows to different queues for scheduling.
Network diagram
Figure 1-10 Network diagram for priority marking and queue scheduling configuration
Server 1
192.168.0.1
PC 1 PC 2
Configuration procedure
1) Define an ACL for traffic classification
# Create ACL 3000 and enter advanced ACL view.
<Sysname> system-view
[Sysname] acl number 3000
# Define ACL rules for identifying packets based on destination IP addresses.
[Sysname-acl-adv-3000] rule 0 permit ip destination 192.168.0.1 0
[Sysname-acl-adv-3000] rule 1 permit ip destination 192.168.0.2 0
[Sysname-acl-adv-3000] rule 2 permit ip destination 192.168.0.3 0
[Sysname-acl-adv-3000] quit
2) Configure priority marking
# Mark priority for packets received through Ethernet 1/0/2 and matching ACL 3000.
[Sysname] interface Ethernet1/0/2
[Sysname-Ethernet1/0/2]
local-precedence 4
Server 2
192.168.0.2
Eth1/0/2
Eth1/0/1
Eth1/0/3
Switch
PC 3
traffic-priority
Server 3
192.168.0.3
PC 4 PC 5 PC 6
inbound
1-32
ip-group 3000 rule 0