Stackable network unit

A network switch (10) comprises a multiplicity of ports for receiving and forwarding addressed data packets, a forwarding engine (8, 9) for directing packets received at the ports to at least one other port, a register (42b) for storing unit identifications of a set of units (10, 20, 30 see fig.2) i...

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Bibliographic Details
Main Authors DANIEL O'KEEFFE, MARK ANTHONY HUGHES, PAUL JAMES MORAN, KEVIN LOUGHRAN
Format Patent
LanguageEnglish
Published 29.08.2001
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A network switch (10) comprises a multiplicity of ports for receiving and forwarding addressed data packets, a forwarding engine (8, 9) for directing packets received at the ports to at least one other port, a register (42b) for storing unit identifications of a set of units (10, 20, 30 see fig.2) including said network unit, and means (41) such as hashing logic for selecting one of said unit identifications in response to address data in a packet. The forwarding engine makes a determination whether the said one of said unit identifications (B1, B2...B4) corresponds to said network unit (10) and is operative to direct the packet in accordance with said determination The use of a register enables a substantial increase in the number of ports that can be members of a stack-wide trunk.
Bibliography:Application Number: GB20000004515