3Com CoreBuilder 9000, User Manual

Page: 405 / 468

Traffic Management in the CoreBuilder 9000 ATM Enterprise Switch 405
Figure 27 Traffic Management Mechanisms
In the ATM Interface Module, the EFCI mechanism is selective, meaning
that it can be applied per connection. This is specified when the
connection is established. It is also possible to specify that EFCI be applied
globally to all connections of a certain type, for example, ABR traffic.
Output Data Loss
Prevention
When data from more than one input port of the ATM Switch Fabric
Module is directed to the same output port, the flow in the output port
can exceed the line rate of 622 Mbps. Several safeguards in the
CoreBuilder 9000 ATM Enterprise Switch prevent loss of output data in
this situation.
Priority Output Queues
Back Pressure Cell Storage