QoS/Priority
RM Web L2B
Release
5.3
05/2012
5.1
Global
73
display the maximum number of queues possible per port.
The device supports 4 (8 for MACH 4000, MACH 104, MACH 1040 and
PowerMICE) priority queues (traffic classes in compliance with IEEE
802.1D).
select the trust mode globally. You use this to specify how the device
handles received data packets that contain priority information.
“untrusted”
The device ignores the priority information in the packet and always
assigns the packets the port priority of the receiving port.
“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 .
“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 .
Traffic class New VLAN priority
when receiving port
has an even port priority
New VLAN priority
when receiving port
has an odd port priority
00 1
12 3
24 5
36 7
Table 15: VLAN priority remarking
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