Apparatus and method for providing fire wall protection for systems in communication with an a synchronous transfer mode system
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United States of America Patent
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-
Feb 6, 2001
Grant Date -
N/A
app pub date -
Dec 4, 1996
filing date -
Dec 4, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An edge device for an ATM system includes a fire wall protection which proactively limits the number of cells per connection provided to the devices connected to the edge device. The edge device may be connected to ethernets, LANs, frame relay networks, communication equipment, work stations, or various other computer and communication equipment. The edge device preferably includes a counter for each connection associated with the ATM system. The counter is decremented each time a memory location in the host memory is utilized and incremented whenever the memory location is relieved of storing the data cell. An SAR unit operates to proactively prevent congestion by limiting each connection to a particular number of storage elements.
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