QoS/Priority
124
5.2
Port Configuration
RM Web
Release
6.0
07/2010
X “trustDot1p”:
The device prioritizes received packets that contain VLAN tag information
according to this information (assigning them to a traffic class - see
“802.1D/p mapping“).
The device prioritizes received packets that do not contain any tag
information (assigning them to a traffic class - see “Entering the port
priority“) according to the port priority of the receiving port .
X “trustIpDscp”:
The device prioritizes received IP packets (assigning them to a traffic
class - see “IP DSCP mapping“) according to their DSCP value.
The device prioritizes received packets that are not IP packets (assigning
them to a traffic class - see “Entering the port priority“) according to the
port priority of the receiving port .
For received IP packets:
The device also performs VLAN priority remarking.
In VLAN priority remarking, the device modifies the VLAN priority of the
IP packets if the packets are to be sent with a VLAN tag (see on page 113
“VLAN Static“).
For received IP packets:
Based on the traffic class to which the IP packet was assigned (see
above), the device assigns the new VLAN priority to the IP packet in
accordance with table 48.
Example: A received IP packet with a DSCP value of 16 (cs2) is assigned
traffic class 1 (default setting). The packet is now assigned VLAN priority
2 in accordance with table 48.
5.2.3 Displaying the untrusted traffic class
“Untrusted traffic class” shows you the traffic class that is used in the
“untrusted” trust mode. When you change the port priority (see on page 123
“Entering the port priority“), the untrusted traffic class also changes (see
table 47).
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