Stacked network switch configuration
First Claim
Patent Images
1. A method of handling packets, said method comprising:
- inserting a stack-specific tag into a packet; and
processing the packet in a stack of network switches on a single chip in accordance with tag information in the stack-specific tag,wherein each of the network switches is interconnected with others of the network switches through an interstack connection and wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, andwherein the processing further comprises passing the packet to a destination network switch through the interstack connection based on the tag information.
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Abstract
A method of handling packets includes inserting a stack-specific tag into a packet, then processing the packet in a stack of network switches in accordance with tag information in the stack-specific tag. The stack-specific tag is then removed from the packet.
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Citations
50 Claims
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1. A method of handling packets, said method comprising:
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inserting a stack-specific tag into a packet; and processing the packet in a stack of network switches on a single chip in accordance with tag information in the stack-specific tag, wherein each of the network switches is interconnected with others of the network switches through an interstack connection and wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, and wherein the processing further comprises passing the packet to a destination network switch through the interstack connection based on the tag information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20, 21, 22, 23, 24, 25, 27, 28)
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13. A method of handling packets, said method comprising:
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inserting a stack-specific tag into a packet; and processing the packet in a stack of network switches on a single chip in accordance with tag information in the stack-specific tag, wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, and wherein the processing further comprises passing the packet to a destination network switch through an interstack connection based on the tag information. - View Dependent Claims (14, 15)
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16. A method comprising:
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inserting a stack-specific tag into a packet; processing the packet in a stack of network switches in accordance with tag information in the stack-specific tag; and sequentially forwarding the packet to each switch in the stack of network switches and, in a plurality of hops, modifying a stack count field for each hop until the stack count reaches a predetermined value, wherein each of the network switches is interconnected with others of the network switches through an interstack connection and wherein said stack-specific tag includes information relating to at least one of the stack count, trunk group information, and mirroring information. - View Dependent Claims (17, 18)
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26. A method of handling packets, said method comprising:
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inserting a stack-specific tag into a packet; and processing the packet in a stack of network switches on a single chip in accordance with tag information in the stack-specific tag, wherein said processing includes blocking incoming ports such that when an incoming packet is forwarded out of any switch in the stack of network switches, it cannot be forwarded to a same port on which the packet came in, and wherein the processing further comprises passing the packet to a destination network switch through the interstack connection based on the tag information.
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29. A network switch for processing packets, said network switch comprising:
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a tag insertion unit configured to insert a stack-specific tag into a packet; and a processing unit configured to process the packet in a stack of network switches on a single chip of the network switch in accordance with tag information in the stack-specific tag, wherein each of the network switches in the stack is interconnected with others of the network switches through an interstack connection and wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, and wherein the processing unit is further configured to pass the packet to a destination network switch through the interstack connection based on the tag information. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 48, 49, 50)
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42. A network switch for processing packets, said network switch comprising:
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a tag insertion unit configured to insert a stack-specific tag into a packet; and a processing unit configured to process the packet in a stack of network switches on a single ship of the network switch in accordance with tag information in the stack-specific tag, wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, and wherein the processing unit is configured to pass the packet to a destination network switch through a interstack connection based on the tag information. - View Dependent Claims (43, 44)
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45. A network switch, comprising:
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a tag insertion unit configured to insert a stack-specific tag into a packet; and a processing unit configured to process the packet in a stack of network switches in accordance with tag information in the stack-specific tag, wherein said stack-specific tag includes information relating to at least one of stack count, trunk group information, and mirroring information, and said processing unit is configured to sequentially forward the packet to a next switch in the stack of network switches, and to modify a stack count field unless the stack count field has reached a predetermined value. - View Dependent Claims (46, 47)
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Specification