R2511-HP MSR Router Series ACL and QoS Command Reference(V5)

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fr congestion-threshold
Use fr congestion-threshold to enable congestion management for an FR interface.
Use undo fr congestion-threshold to disable the congestion management function.
Syntax
fr congestion-threshold { de | ecn } queue-percentage
undo fr congestion-threshold { de | ecn }
Default
The congestion management function is disabled for FR interfaces.
Views
FR interface view, MFR interface view
Default command level
2: System level
Parameters
de: Drops FR packets with the DE flag bit 1 when congestion occurs.
ecn: Sets the BECN flag bits and FECN flag bits of FR packets to 1 when congestion occurs.
queue-percentage: Congestion threshold, expressed in the interface queue utilization rate, which means
the percentage of the current interface queue length to the total queue length. The value range for this
argument is 1 to 100, and the default is 100.
Usage guidelines
This command is similar to the congestion-threshold command. The difference between the two
commands lies in that: this command is applicable to FR interfaces and the congestion-threshold
command is applicable to FR PVCs.
This command is applicable to only FR DCE interfaces and NNI interfaces.
Examples
# Configure Serial 2/0 to drop FR packets with the DE flag bit 1 when the current interface queues uses
more than 80% of the total queue length.
<Sysname> system-view
[Sysname]interface serial 2/0
[Sysname-Serial2/0] fr interface-type dce
[Sysname-Serial2/0] fr congestion-threshold de 80
Related commands
congestion-threshold
fr de del
Use fr de del to apply a specific DE rule list to the specified FR PVC.
Use undo fr de del to remove the DE rule list from the specified FR PVC.
Syntax
fr de del list-number dlci dlci-number