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Chapter 4: Configuring the WAN April 14, 2006
4-4 MM70xG2-UM-03
Step Action
1 Configure the following parameters for each session:
• Session Name
Enter a unique, descriptive identifier for the session. This name can have a maximum of 32
characters.
• Virtual Path ID (VPI)
Enter the value (from 0 to 4,095) provided by the service provider. The number identifies the virtual
path that transports ATM cells between the modem and the service provider. This value must match
the virtual path identification (VPI) value the service provider uses for this connection.
• Virtual Channel ID (VCI)
Enter the value (from 32 to 65,535) provided by the service provider. The number identifies the virtual
channel for this session that transports ATM cells between the modem and the service provider. This
value must match the virtual channel identification (VCI) value the service provider uses for this
connection.
•ATM QoS
Select the ATM Quality of Service indicated by your service provider. The options are:
– UBR (unspecified bit rate is the default setting)
– CBR (constant bit rate)
– VBR-rt (variable bit rate real-time)
– VBR-nrt (variable bit rate non-real-time)
• QoS Peak Cell Rate
Enter the QoS Peak Cell Rate (PCR) value supplied by your service provider. If you are not provided
a PCR value, use the default. PCR is the maximum rate at which data is transferred on the line and
measured in ATM cells per second. The valid range is 1-5500 cells per second for Single Pair Mode
and 1-11000 for Dual Pair Mode. The default PCR is 5500.
• QoS Sustainable Cell Rate
Enter the QoS Sustainable Cell Rate (SCR) value supplied by your service provider. Use for VBR-rt,
and VBR-nrt ATM QoS. SCR is the average rate at which ATM cells are transferred, measured in
cells per second. The SCR must be less than the PCR. The valid range is 1-5500 cells per second.
• QoS Maximum Burst Size
Enter the QoS Maximum Burst Size (MBS) value supplied by your service provider. Use with VBR-rt
and VBR-nrt QoS. MBS is the maximum number of cells that can be transmitted at the peak cell rate.
The MBS rate must be equal to or less than the PCR. The default MBS is 0.
• Encapsulation
Select the encapsulation type as indicated by the service provider. The options are:
– LlcBridged—Logical Link Control allows multiple protocols to be run over the session. This is the
default encapsulation.
– VcMuxBridged—Virtual Channel Multiplexer-based encapsulation allows one protocol to be run
over the session.
2 Click Create to add the new RFC1483-Bridge session to your session list on the WAN Configuration
page.