3Com 3CRWDR100U-72 User Guide - Page 56

Dynamic/Fixed IP for Bridge Mode, Protocol, IP address, Subnet Mask, ISP Default, Gateway

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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

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54
C
HAPTER
5: C
ONFIGURING
THE
R
OUTER
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