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Usage guidelines
When the peak output rate is exceeded, the system allocates caches based on the specified CDVT
value to ensure service stability. A smaller CDVT value requires more hardware resources and is
harder to configure. If the configuration fails, the following message appears: "Failed to set service
parameter. Please adjust cdvt value." In this situation, configure a larger CDVT value.
You can use this command as well as the service ubr, service vbr-nrt,
and service vbr-rt commands to set the service type and parameters of a PVC. If you execute this
command multiple times, the most recent configuration takes effect.
Each PVC occupies a separate bandwidth. As a best practice, configure PVCs requiring more
bandwidths first.
Examples
# Create a PVC named aa on the interface ATM 2/4/0, and set the VPI/VCI, service type, output-pcr,
and cdvt_value to 1/101, CBR, 50000, and 1000, respectively.
<Sysname> system-view
[Sysname] interface atm 2/4/0
[Sysname-ATM2/4/0] pvc aa 1/101
[Sysname-ATM2/4/0-pvc-aa-1/101] service cbr 50000 cdvt 1000
# Create a PVC named aa in PVC-group 1, and set the VPI/VCI, service type, output-pcr,
and cdvt_value to 1/101, CBR, 50000, and 1000, respectively.
<Sysname> system-view
[Sysname] interface atm 2/4/0
[Sysname-ATM2/4/0] pvc-group 1
[Sysname-ATM2/4/0-pvc-group-1] pvc aa 1/101
[Sysname-ATM2/4/0-pvc-group-1-pvc-aa-1/101] service cbr 50000 cdvt 1000
Related commands
service ubr
service vbr-nrt
service vbr-rt
service ubr
Use service ubr to set the PVC service type to UBR and set the related parameters.
Use undo service to restore the default.
Syntax
service ubr output-pcr
undo service
Default
The service type of a PVC is UBR. The peak output rate of ATM cells equals the maximum
bandwidth of the interface to which the PVC belongs.
Views
PVC view
PVC view in a PVC-group
Predefined user roles
network-admin
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