Extreme Networks ExtremeWare XOS 11.1, Руководство пользователя

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Traffic Groupings
ExtremeWare XOS 11.1 Concepts Guide
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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 Table 36 , and the default 802.1p
priority value to code point mapping is described in Table 37 .
Table 37: Default 802.1p priority value-to-DiffServ code point mapping
BlackDiamond
10K Switch QoS
Profile Aspen 8810
Switch QoS
Profile
802.1p Priority
Value
Code Point
QP1 QP1 0 0
QP2 QP1 1 8
QP3 QP1 2 16
QP4 QP1 3 24
QP5 QP1 4 32
QP6 QP1 5 40
QP7 QP1 6 48
QP8 QP8 7 56