Traffic Management In The Corebuilder 9000 Atm Enterprise Switch; Traffic Management Methods - 3Com CoreBuilder 9000 User Manual

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HAPTER RAFFIC
Traffic
Management in the
CoreBuilder 9000
ATM Enterprise
Switch
Traffic Management
Methods
M
ANAGEMENT
One of the most powerful features of the CoreBuilder 9000 ATM
Enterprise Switch is its ability to handle traffic congestion and protect
high priority data.
The CoreBuilder 9000 ATM Enterprise Switch provides a variety of
different traffic management methods that work together to ensure that
your high priority data is protected during periods of network congestion.
The CoreBuilder 9000 ATM Enterprise Switch uses the following
methods:


Cell marking


Priority


Scheduling


Queuing


Early packet drop


Partial packet drop


Cell dropping
These methods are applied in the order indicated, first to avoid
congestion and then to minimize congestion, if it occurs. Table 59 lists
how the specific methods are used.
Table 59 Traffic Management Methods
Traffic Management
Method
EFCI Cell Marking
Back Pressure Cell Storage Temporary cell storage
Early Packet Drop (EPD)
Partial Packet Drop (PPD)
CLP-based Cell Discard
These methods can also be categorized in terms of traffic management of
input data and output data.
Type
Cell marking method
method
Packet dropping method
(for AAL5 connections)
Packet dropping method
(for AAL5 connections)
Cell dropping method
Purpose
Avoid congestion
Avoid congestion
Avoid congestion
Minimize congestion
Minimize congestion