Table 16 Default Priority Value Of Untrusted Interfaces; Table 17 Ieee 802.1Q Default Priority Mapping - Dell 53-1002116-01 Administrator's Manual

Table 16
TABLE 16
Incoming CoS
0
1
2
3
4
5
6
7
NOTE
Non-tagged Ethernet frames are interpreted as incoming CoS value of 0 (zero).
You can override the default user-priority mapping by applying explicit user-priority mappings.
When neighboring devices are trusted and able to properly set QoS then Layer 2 QoS trust can be
set to COS and the IEEE 802.1Q default-priority mapping is applied.
Table 17
mapping. You can override this default user priority table per port if you want to change (mutate)
the COS value.
TABLE 17
Incoming CoS
0
1
2
3
4
5
6
7
Configuring the QoS trust mode
The QoS trust mode controls user priority mapping of incoming traffic. The Class of Service (CoS)
mode sets the user priority based on the incoming CoS value. If the incoming packet is not priority
tagged, then fallback is to the Interface Default CoS value.
NOTE
When a CEE map is applied on an interface, the qos trust command is not allowed. The CEE map
always puts the interface in the CoS trust mode.
Dell Converged Enhanced Ethernet Administrator's Guide
53-1002116-01
presents the Layer 2 QoS untrusted user priority generation table.
Default priority value of untrusted interfaces
User Priority
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
port <user priority> (default 0)
presents the Layer 2 CoS user priority generation table conforming to 802.1Q default
IEEE 802.1Q default priority mapping
User Priority
0
1
2
3
4
5
6
7
10
Queueing
95