Owner's Manual

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Figure 13-155. Shaping
It has the following fields:
-
Enable —Check to enable shaping.
-
Shaping Type —Select from a pick list. Either set VPI Shaping to None to allow Constant
Bandwidth
(CBR) or set VBR Shaping at the Unit level only. Alternatively, you can use the
Shaping Type of CBR at both the VPI and Unit levels provided you set a CBR value at the
Unit level that meets or exceeds the Constant bandwidth value set at the VPI level.
Unless you do this, you cannot set Shaping Type of VBR at both the VPI and Unit levels. If
your settings do not meet these conditions, then a configure error message appears: (ATM2
cannot configure VC Shaping when VP Shaping for VPI#1 is configured)
-
Constant Bandwidth —Enabled if you select CBR. Specify the constant bandwidth in this field.
The following fields appear if you do not select constant bandwidth:
-
Burst size —Enter a number. Burst size (maximum 4,000 for ATM2, 255 for ATM1) (1 - 4,000)
-
Peak rate —Enter a peak rate number. Peak rate (33000 - 2,170,107,168).
-
Sustained rate —Enter a sustained rate (33,000 - 2,170,107,168).
Unit Services
These let you apply Service-sets to one or more installed units. You can configure up to three
different service sets on the input and output sides of the interface.