H3C Technologies H3C SR8800 - Manual (Page 41)

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Figure 13 802.1Q tag header
The priority in the 802.1Q tag header is called 802.1p priority, because its use is defined in IEEE
802.1p.
Table 4 presents the values for 802.1p priority.
Table 4 Description on 802.1p priority
802.1p priority (decimal) 802.1p priority (binary) Description
0 000 best-effort
1 001 background
2 010 spare
3 011 excellent-effort
4 100 controlled-load
5 101 video
6 110 voice
7 111 network-management
3. EXP values
The EXP field lies in MPLS labels for QoS purposes.
Figure 14 MPLS label structure
As shown in Figure 14 , the EXP field is 3 bits long and ranges from 0 to 7.
QoS policy configuration procedure
To configure a QoS policy:
1. Create a class and define a set of match criteria in class view.
2. Create a traffic behavior and define a set of QoS actions in traffic behavior view.
3. Create a policy and associate the traffic behavior with the class in policy view.
4. Apply the QoS policy.
Defining a class
To define a class, specify its name and then configure the match criteria in class view.