Revision 1.3a
Page 89
XLR 550 Manual
Figure 5.3 Network Diagram
5.2.3.2.
QoS Configuration for XLR 550 Series
In the above diagram, the network devices produce the QoS packets which support DSCP and which in
turn place values in the packet headers.
In this case, the XLR 550 control the priority order based on the value of the data in the DSCP field. XLR
550 can appoint a priority order for different DSCP values. In this example, set up 7 and 15 are used for
the VoIP phones to ensure they take top priority, While 0, 1 and 4 are used for less critical traffic and
have the lowest priority.
Device #1 Configuration Example
Device #2 Configuration Example
High Priority
Low Priority
e0
e1
e2
s0
s0
Device #1
Device #2
e0
e1
e2
DSCP 7
DSCP 0
DSCP 1
DSCP 15
DSCP 15
DSCP 0
DSCP 4
DSCP 7
XLR 550> (enable)
set devicetype co
XLR 550> (enable)
restart pme all
This command will restart all pmes.
Do you want to continue (y/n) [n]?
y
XLR 550> (enable)
set vlmode transparent
This command will flush all vlan group.
Do you want to continue (y/n) [n]?
y
XLR 550> (enable)
set port e0,e1,e2 classifier dscp
XLR 550> (enable)
set qos dscp-map 7,15 7
XLR 550> (enable)
set qos dscp-map 0,1,4 0
XLR 550> (enable)
set devicetype rt
XLR 550> (enable)
restart pme all
This command will restart all pmes.
Do you want to continue (y/n) [n]?
y
XLR 550> (enable)
set vlmode transparent
This command will flush all vlan group.
Do you want to continue (y/n) [n]?
y
XLR 550> (enable)
set port e0,e1,e2classifier dscp
XLR 550> (enable)
set qos dscp-map 7,15 7
XLR 550> (enable)
set qos dscp-map 0,1,4 0