Multiple address lookup engines running in parallel in a switch for a packet-switched network
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United States of America Patent
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Nov 8, 2005
Grant Date -
N/A
app pub date -
May 10, 2001
filing date -
May 10, 2001
priority date (Note) -
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Abstract
A multiport device includes an internal rules checking (IRC) circuit that makes frame forwarding decisions for frames received from a network. The IRC circuit includes multiple frame lookup components implemented in parallel. More particularly, each of the multiple frame lookup components includes a source address lookup component and a destination address lookup component, and an address table. The source address lookup component and the destination address lookup component accesses the address table to determine the correct forwarding information for a frame. If an address is not present in the table, a source address learning component updates the table. The source address learning component may be shared by each of the multiple frame lookup components.
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