Avaya P550R User Manual page 63

Avaya P550R/P580/P880/P882 Multiservice Switch ATM Uplink Module User Guide, Version 2.0
Table 35. QoS Set Creation Parameters
Parameter Definition
Traffic Class The traffic class for the set you are creating.
Values include:
Note:
CDVT Enter the Cell Delay Variation Tolerance. When
cells from two or more connections are
multiplexed, cells of a given connection may be
delayed. Simultaneously, cells of another
connection are being inserted at the output of the
multiplexer. Some randomness may affect the
inter-arrival time between consecutive cells of a
connection. The upper boundary on this delay is
the CDVT.
PCR Enter the Peak Cell Rate. This is a traffic
parameter specifying an upper bound on the rate
at which traffic can be submitted on an ATM
connection. The unit of measurement is cells/
second. The valid range is 100 to the maximum
line rate.
• UBR - Unspecified bit rate which is
characterized in terms of Cell Delay
Variation Tolerance (CDVT), and Peak Cell
Rate (PCR).
• CBR - Constant bit rate. This is used by
connections that request a static amount of
bandwidth that is continuously available
during the connection lifetime. This amount
of bandwidth is characterized in terms of
PCR, and Cell Delay Variation Tolerance
(CDVT).
• rtVBR - Real-time variable bit rate. This is
intended for real-time applications (voice
and video). rtVBR connections are
characterized in terms of PCR, SCR, and
MBS.
• nrtVBR - Non-real-time variable bit rate.
This is intended for non-real-time
application that have bursty traffic
characteristics and which are characterized
in terms of PCR, Sustainable Cell Rate
(SCR), and Maximum Burst Size (MBS).
Refer to "Creating a QoS Class Set" for
more information.
Configuring LANE
3-21