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CoreBuilder 9000 ATM Enterprise Switch Characteristics
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Mechanisms for Handling Congestion
The following mechanisms are used to manage congestion in the
CoreBuilder 9000 ATM Enterprise Switch Fabric Module:
Back Pressure
Partial Packet Drop (PPD) (Hardware ready)
Early Packet Drop (EPD) (Hardware ready)
Call Admission
CLP-based Cell Discard.
ATM Networks
The CoreBuilder 9000 ATM Enterprise Switch supports the following
types of ATM networks:
Classical IP (CLIP) ATM
The CoreBuilder 9000 ATM Enterprise Switch is transparent to CLIP and
allows you to use CLIP over the ATM network. For a view of the
CoreBuilder 9000 ATM Enterprise Switch when CLIP is used over ATM
within a network, see Chapter 3, ATM Network Basics in the Operations
Guide.
Virtual Networks
The CoreBuilder 9000 ATM Enterprise Switch handles virtual networks
across the enterprise using ATM and LAN Emulation (LANE). Segments in
a virtual network can incorporate legacy LANs and ATM devices using
LANE, allowing you to organize network users into logical groups,
regardless of their physical location. Using this feature, you can set up
workgroups comprised of members from various departments or business
units around the enterprise, and centralize servers into server
farms
for
better administration. For more information about virtual networks, see
Chapter 3, ATM Network Basics in the Operations Guide.