Local area network receive filter
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United States of America Patent
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-
Jul 3, 2001
Grant Date -
N/A
app pub date -
Mar 27, 1998
filing date -
Mar 27, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Filtering of network packets is performed. Within a filter controller, a base address for a range of addresses is stored. A second value is also stored which further specifies the range of addresses. When a network packet is received, a network controller extracts a destination address from the network packet. The network controller forwards the destination address to the filter controller. The filter controller compares the destination address to the range of addresses specified by the base address and the second value. The filter controller generates a signal which indicates when the destination address is outside the range of addresses.
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