Command Reference Guide

144 ● fr ip-precedence 3Com Router 5000 Family and Router 6000 Family
Command Reference
fr ip-precedence
Purpose Use the fr ip-precedence command to configure the PVC to carry packets of the
specified priority levels when the Precedence identifier in the IP packet is used to
identify the priority levels of packets.
Use the undo fr ip-precedence command to remove the configuration.
Syntax fr ip-precedence dlci { min [ max ] | default }
undo fr ip-precedence dlci
Parameters dlci
DLCI number of the PVC. Valid values are 16 to 1007.
min [ max ]
The lowest and highest priority levels of IP packets that
the specified PVC carries. Valid values are 0 to 7.With
both levels configured, you specify a range of priority
levels. With only the lowest priority level configured,
you specify a priority level.
default
Specifies that the PVC serves as the default PVC.
Default By default, no packets are assigned to a PVC.
Example Configure PVC 100 in PVC group 123 to carry IP packets of priority levels 0 to 2.
<3Com> system-view
[3Com] interface serial1/0/0
[3Com-Serial1/0/0] fr pvc-group 123
[3Com-fr-pvc-group-Serial1/0/0-123] fr match precedence
[3Com-fr-pvc-group-Serial1/0/0-123] fr ip-precedence 100 0 2
View This command can be used in the following views:
■ FR Pvc-Group view
Description The Precedence identifier in the TOS field of the IP header occupies three bits, and
therefore is able to identify eight priority levels. Note that:
■ After configuring the fr match command to specify to differentiate traffic by the
DSCP identifier, you cannot configure this command.
■ If you do not configure the fr match dscp command or you have configured
the
fr match precedence command, you must configure the fr
ip-precedence
command.
Related Command fr match