Command Reference Guide

3Com Router 5000 Family and Router 6000 Family fr ip-dscp ● 143
Command Reference
fr ip-dscp
Purpose Use the fr ip-dscp command to configure the PVC to carry packets of the
specified priority levels when the DSCP identifier in the IP packet is used to identify
the priority levels of packets.
Use the undo fr ip-dscp command to remove the configuration.
Syntax fr ip-dscp dlci { min [ max ] | default }
undo fr ip-dscp 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 63. 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.
Example Configure PVC 100 in PVC group 123 to carry IP packets of priority levels from 0 to
20.
<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 dscp
[3Com-fr-pvc-group-Serial1/0/0-123] fr ip-dscp 100 0 20
View This command can be used in the following views:
■ FR Pvc-Group view
Description The DSCP identifier in the TOS field of the IP header occupies six bits, and therefore is
able to identify 64 priority levels. Note that:
■ Only after you use the fr match command to specify to identify the priority
levels of packets by the DSCP identifier of IP packets, can you configure the
fr
ip-dscp
command.
■ After configuring the fr match dscp command, you must configure this
command; otherwise, the whole PVC group will become unavailable because the
packets of the corresponding priority levels have no PVC to carry.
Related Command fr match