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4-38 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring ATM Logical Ports on Frame-based Modules
Defining ATM Direct Trunk and OPTimum Cell Trunk Logical Ports
Figure 4-8. Select Traffic Shaper Dialog Box
3. See Table 4-15 to continue this configuration
Table 4-14. Select Traffic Shaper Dialog Box Fields
Field Action/Description
Id Identifier for the shaper ID.
Priority A number to identify the priority of this shaper ID.
Scr (cps) The maximum average cell transmission rate that is allowed 
over a given period of time on a given circuit. The SCR allows 
the network to allocate sufficient resources (but fewer 
resources than would be allocated based on PCR) for 
guaranteeing that network performance objectives are met. 
This parameter applies only to VBR traffic; it does not apply to 
CBR or UBR traffic.
Pcr (cps) The PCR ranges between zero (0) and 7. This value represents 
the maximum allowed cell transmission rate (expressed in cps). 
It defines the shortest time period between cells and provides 
the highest guarantee that network performance objectives 
(based on CLR) will be met.
Mbs (cell) The maximum number of cells that can be received at the PCR. 
MBS allows a burst of cells to arrive at a rate higher than the 
SCR. If the burst is larger than anticipated, the additional cells 
are either tagged or dropped. This parameter applies only to 
VBR traffic; it does not apply to the CBR or UBR traffic.
Type Displays the type for this shaper Id.