Filter
Top Products
C H A P T E R 10 Quality of Service (QoS)
149
As described in Table 10.2, by default a QoS profile is mapped to a
hardware queue, and each QoS profile has configurable bandwidth
parameters and priority. In this way, an 802.1p priority value
detected on ingress can be mapped to a particular QoS profile with
specified bandwidth-management and priority behavior.
To change the default mappings of QoS profiles to 802.1p priority
values, use the command:
configure dot1p ethertype <dot1p_priority>
Replacing 802.1p Priority Information
By default, 802.1p priority information is not replaced or
manipulated, and the information observed on ingress is preserved
when transmitting the packet. This behavior is not affected by the
switching or routing configuration of the switch.
However, the switch is capable of inserting and/or overwriting
802.1p priority information when it transmits an 802.1Q tagged
frame. If 802.1p replacement is enabled, the 802.1p priority
information that is transmitted is determined by the hardware queue
Table 10.6: 802.1p Priority Value-to-QoS Profile Mapping
Priority Value QoS Profile
0 Qp1
1 Qp2
2 Qp3
3 Qp4
4 Qp5
5 Qp6
6 Qp7
7 Qp8