Frame forwarding in a switch fabric
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United States of America Patent
Stats
-
Jan 1, 2008
Grant Date -
Oct 23, 2003
app pub date -
May 7, 2003
filing date -
Jun 30, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of forwarding data in a network switch fabric is disclosed. An incoming data packet is received at a first port of the fabric and a first packet portion, less than a full packet length, is read to determine particular packet information including an opcode value. The opcode value allows the fabric to determine the packet type, such a a whether the packet is a broadcast packet, a unicast packet, a multicast packet, etc. Based on the opcode value read, a particular forwarding table of a plurality forwarding tables is read and an egress port bitmap is determined based on entries read from the particular forwarding table. The incoming data packet is then forwarded based on the egress port bitmap. In addition, the architecture of the switch fabric is also disclosed.
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