3Com 4500G Family Configuration Manual page 766

Configuration Procedure
# Create an IPv6 ACL 2000.
<Switch> system-view
[Switch] acl ipv6 number 2000
[Switch-acl6-basic-2000] rule deny source 4050::9000/120
[Switch-acl6-basic-2000] quit
# Configure class c_rd for packets matching IPv6 ACL 2000.
[Switch] traffic classifier c_rd
[Switch-classifier-c_rd] if-match acl ipv6 2000
[Switch-classifier-c_rd] quit
# Configure traffic behavior b_rd to deny matching packets.
[Switch] traffic behavior b_rd
[Switch-behavior-b_rd] filter deny
[Switch-behavior-b_rd] quit
# Configure QoS policy p_rd to use traffic behavior b_rd for class c_rd.
[Switch] qos policy p_rd
[Switch-qospolicy-p_rd] classifier c_rd behavior b_rd
[Switch-qospolicy-p_rd] quit
# Apply QoS policy p_rd to interface GigabitEthernet 1/0/1.
[Switch] interface GigabitEthernet 1/0/1
[Switch-GigabitEthernet1/0/1] qos apply policy p_rd inbound
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