SIEMENS 5890 DSL Router
User’s Guide
Chapter 5 Advanced Setup
ATM Traffic Shaping
SIEMENS
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4. Select one of the following
Service Types
.
•
Constant Bit Rate
:
Requests a static amount of bandwidth that is continuously available for the lifetime of the
connection.This bandwidth amount is characterized by a
Peak Cell Rate
value.
•
Real-Time Variable Bit Rate
:
Used for applications that require tightly constrained delay and delay variation, but not necessarily a
fixed cell rate. VBR-nrt connections are characterized in terms of a
Peak Cell Rate
,
Sustained Cell
Rate
, and a
Maximum Burst Size
.
•
Non Real-Time Variable Bit Rate
:
Used for bursty applications that require service guarantees from the network. VBR-rt connections are
characterized in terms of a
Peak Cell Rate
,
Sustained Cell Rate
, and a
Maximum Burst Size
. Frame
Relay traffic can also use VBR-nrt.
•
Unspecified Bit Rate
:
Used for non-real-time, bursty applications that are tolerant of delay and loss. UBR service does not
specify service guarantees and is sometimes referred to as "best effort" service.
5. In
Peak Cell Rate
, enter the peak cell rate if you selected an option that requires a peak cell rate value.
6. In
Sustained Cell Rate
, enter the sustained cell rate if you selected an option that requires a sustained
cell rate value.
7. In
Maximum Burst Size
, enter the maximum burst size if you selected an option that requires a maximum
burst size value.
