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54 CHAPTER 5: CONFIGURING THE ROUTER
Figure 42 Dynamic/Fixed IP for Bridge Mode Screen
After clicking Edit on the ATM PVC page, the ATM Interface page
appears.
1 Select Dynamic/Fixed IP for Bridge Mode from the Protocol drop-down
menu.
2 Enter the IP address, Subnet Mask and Default Gateway information
provided by your ISP into the IP address, Subnet Mask and ISP Default
Gateway fields.
3 Enter the VPI and VCI parameters provided to you by your ISP in the VPI
and VCI fields.
4 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.
This information will have been provided to you by your ISP.
5 Select the type of Quality of Service that you want from the QoS Class
drop-down menu.
■ CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
■ UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
■ VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and