Communication packet including a multicast address and a destination address different than an equivalent to the multicast address
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United States of America Patent
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-
Jul 9, 2002
Issued Date -
N/A
app pub date -
Jul 12, 2000
filing date -
Jan 13, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A switch is provided for use in a virtual communications system having multiple local area networks interconnected by multiple switches through a trunk, which has one or more trunk stations connected directly thereto. The switch includes a first communications port connected directly to a first local area network and a second communications port connected directly to the trunk. The first local area network is within a virtual area network configured to include a second local area network and a trunk station. A switch control detects a communication from the first local area network having a multicast address representing desired destination addresses. The switch control appends a VLAN header having a destination address different than but corresponding to the multicast address to the communication to form a VLAN communication and directs transmission of the VLAN communication to the second communication port for delivery to the multicast addressees.
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