Extreme Networks ExtremeWare XOS Guide Manual page 213

Changing the default DiffServ code point mapping . You can change the QoS profile assignment for each of
the 64 code points using the following command:
configure diffserv examination code-point <code-point> {qosprofile} <qosprofile>
Once assigned, the rest of the switches in the network prioritize the packet using the characteristics
specified by the QoS profile.
Replacing DiffServ code points. The switch can be configured to change the DiffServ code point in the
packet prior to the packet being transmitted by the switch. This is done with no impact on switch
performance.
The DiffServ code point value used in overwriting the original value in a packet is determined by the
QoS profile. You enter the QoS profile you want to use to determine the replacement DiffServ code
point value.
To replace DiffServ code points, you must enable DiffServ replacement using the following commands
enable diffserv replacement ports [<port_list> | all]
NOTE
The port in this command is the ingress port. This command affects only that traffic based on explicit packet class
of service information and physical/logical configuration.
To disable this feature, use the following command:
disable diffserv replacement port [<port_list> | all]
The default QoS profile to DiffServ code point mapping is shown in
priority value to code point mapping is described in
Table 37: Default 802.1p priority value-to-DiffServ code point mapping
BlackDiamond Aspen 8810
10K Switch QoS Switch QoS
Profile Profile
QP1 QP1
QP2 QP1
QP3 QP1
QP4 QP1
QP5 QP1
QP6 QP1
QP7 QP1
QP8 QP8
ExtremeWare XOS 11.1 Concepts Guide
Table 37.
802.1p Priority
Value Code Point
0 0
1 8
2 16
3 24
4 32
5 40
6 48
7 56
Traffic Groupings
Table 36, and the default 802.1p
213