Digi TransPort WR11 - Configure PVC Traffic Shaping Parameters

Configuring network interfaces Configure DSL interfaces
Digi TransPort® Routers User Guide
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Configure PVC traffic shaping parameters
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Service category
You can configure Each ATM PVC with a service category:
n UBR (unspecified bit rate, the default)
n VBR-nrt (variable bit rate, non-real-time)
n VBR-rt (variable bit rate, real-time)
n CBR (constant bit rate)
n Additional traffic parameters may be specified:
n PCR (peak cell rate in cells/sec)
n SCR (sustained cell rate in cells/sec)
n MBS (maximum burst size in cells)
The service categories are characterized by the various traffic parameters as follows:
Service category Traffic parameters
UBR PCR, which may be 0 for no limit
VBR-nrt PCR, SCR, MBS
VBR-rt PCR, SCR, MBS
CBR PCR
This parameter specifies the maximum allowable rate at which cells can be transported along a
connection in the ATM network. The PCR is the determining factor in how often cells are sent in
relation to time in an effort to minimize jitter. PCR generally is coupled with the CDVT (Cell Delay
Variation Tolerance), which indicates how much jitter is allowable.
Sustained cell rate (cells/sec)
A calculation of the average allowable, long-term cell transfer rate on a specific connection.
Maximum burst size (cells)
The maximum allowable burst size of cells that can be transmitted contiguously on a particular
connection.