3Com Switch 8800 Configuration Guide Chapter 33 QoS Configuration
33-7
Item Command Description
Display QoS
configuration display
You can execute the display
command in any view to check
the QoS configuration.
Refer to section 33.3.11
“Displaying and Debugging
QoS Configuration”.
For the common interface boards except XP4, note that:
z The port group members must be on the same board and each port can only be
added to one port group.
z The aggregated port cannot be added to the port group. If a port group member is
to be aggregated, it exits from the port group automatically and the configuration of
the primary port in an aggregated group overrides that of this port.
z When a single port is added to a port group, its configuration is overridden by that
of the port group and the ACL rule cannot be applied to the port any longer.
z If there is no port in the port group, you cannot configure the QACL. If all the ports
exist from the port group, the QACL configuration of the group still exists. And this
configuration is applied again when new ports are added.
For the XP4 board, the system creates two port groups by default. One group contains
ports 0 and 1, and the other contains ports 2 and 3. Their group numbers are 300 + 2 x
slot-no and 300 + 2 x slot-no + 1 (slot-no is the slot where the XP4 board locates)
respectively, which are automatically assigned by the system. For example, when the
XP4 board locates in slot 1, the group numbers are 302 and 303.
When configuring port groups for the XP4 board, pay attention to the following
limitation:
z configure new port groups, and not allowed to join/remove any port into/from port
group.
z The QACL commands are only allowed to be executed on port groups instead of
individual ports.
z Traffic shaping is not supported.
z Port mirroring across groups are not supported. You can configure one incoming
and one outgoing monitoring ports for each group (other kinds of interface boards
have each of the monitoring ports per board).
z Four output queues are supported for queue scheduling.
33.2.2 Configuration Example for port group
I. Network requirements
Forward the packets sent from PC1 (IP 1.0.0.1), PC2(IP 2.0.0.1) during the time range
from 8:00 to 18:00 every day to the address 3.0.0.1.