Interswitch link mechanism for connecting high-performance network switches
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United States of America Patent
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Apr 21, 1998
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N/A
app pub date -
Mar 28, 1996
filing date -
Mar 28, 1996
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Abstract
An encapsulation mechanism efficiently transports packets between ports of different switches in a network on the basis of, inter alia, virtual local area network (VLAN) associations among those ports. The switches are preferably interconnected by a novel interswitch link (ISL) mechanism that appends ISL destination and source information, along with ISL error detection information, to VLAN-modified packets. The ISL mechanism keeps the VLAN associations of the packets intact during transfer between the switches in accordance with a high-performance switching bus architecture.
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