
Configuring ATM Services
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117374-B Rev. 00
Modifying Control VC Traffic Parameters
You can modify the following traffic parameters for both the signaling and the
ILMI control VCs:
• Peak cell rate (PCR)
• Sustainable cell rate (SCR)
• Maximum burst size (MBS)
Setting the PCR
The PCR specifies the upper traffic limit, in cells/s, that the ATM connection can
support.
By default, the PCR is set to 4716 cells/s. Table 4-2
lists the valid ranges for each
Bay Networks ATM router.
For additional information about the PCR, see “Using the PCR” on page 1-24. For
additional information about traffic parameters, see “ATM Traffic Parameters” on
page 1-23.
Table 4-2. Valid PCR Ranges
ATM Router Range (Cells/s)
ATM ARE OC-3 SONET/SDH ILI pairs 128 to 353,207
Model 5782 VNR 128 to 353,207
ATM ARE DS-3 ILI pairs 128 to 96,000
ATM ARE E-3 ILI pairs; G.832 framing mode 128 to 80,000
ATM ARE E-3 ILI pairs; G.751 framing mode 128 to 72,000
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