User manual

Chapter 2 - Managing a Single Device/Cell Service Parameters Page
AlvariCRAFT Device Manager 130 User Manual
Low Priority Traffic Min
(%)
This parameter can be used to ensure that a a certain amount of low
priority packets is transmitted even at the expense of high priority
traffic. The mechanism guarantees a low priority traffic with a rate of
(Low Priority Traffic Min) * RT /100, where RT symbolizes the allowed
traffic rate. The high priority traffic will thus not be able to exceed
(100-Low Priority Traffic Min) * RT/100. If the system receives high
priority traffic at a rate higher than this figure, some high priority
packets will be discarded.
The range is between 0 and 100 (%).
VLAN Priority Threshold The VLAN Priority Threshold is applicable for Trunk and Hybrid Links
only. It enables defining the value of the VLAN Priority Threshold. If
the VLAN Priority field in a tagged frame is higher than the value of
the VLAN Priority Threshold parameter, the packet will be routed to
the High queue. If the VLAN Priority field is lower than or equal to this
value, the packet will be transferred to the Low queue (unless it is
assigned a High priority by another classifier).
Valid values range from 0 to 7. 7 (the default) means that all packets
get a low priority (equivalent to disabling the VLAN-based classifier).
ToS Prioritization The ToS Prioritization defines whether ToS-based prioritization is
enabled or disabled. The following options are available:
 Disable.
 IP Precedence (prioritization based on the 3 IP Precedence bits in
the IP header in accordance with RFC 791).
 DSCP (prioritization based on the 6 Differentiated Services Code
Point bits in accordance with RFC RFC2474).
IP Precedence Threshold The IP Precedence Threshold parameter is applicable when the ToS
Prioritization is set to IP Precedence. If the value of the 3 IP
Precedence bits in the IP header is higher than this threshold, the
packet is routed to the High queue. If the value is lower than or equal
to this threshold, the packet will be transferred to the Low queue
(unless it is assigned a High priority by another classifier).
Valid values range from 0 to 7.
DSCP Threshold The DSCP Threshold parameter is applicable when the ToS
Prioritization is set to DSCP. If the value of the 6 DSCP bits in the IP
header is higher than this threshold, the packet is routed to the High
queue. If the value is lower than or equal to this threshold, the packet
will be routed to the Low queue (unless it is assigned a High priority
by another classifier).
Valid values range from 0 to 63.