SPANNING TREE IN FABRIC SWITCHES
First Claim
Patent Images
1. A switch, comprising:
- port management circuitry configured to;
assign a port identifier to a port of the switch; and
store, in an entry of a port identifier allocation table, the assigned port identifier;
spanning tree management circuitry configured to participate in a spanning tree using the port identifier; and
wherein the port management circuitry is further configured to reassign the port identifier to the port in response to the switch leaving and rejoining the spanning tree.
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Abstract
One embodiment of the present invention provides a switch. The switch includes a packet processor and a spanning tree management module. The packet processor obtains information associated with a spanning tree from a message. The spanning tree management module, in response to the obtained information being superior to locally available information of the spanning tree, determines the port role of a local port of the switch for the spanning tree to be the root port and the port state of the local port for the spanning tree to be blocking.
8 Citations
20 Claims
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1. A switch, comprising:
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port management circuitry configured to; assign a port identifier to a port of the switch; and store, in an entry of a port identifier allocation table, the assigned port identifier; spanning tree management circuitry configured to participate in a spanning tree using the port identifier; and wherein the port management circuitry is further configured to reassign the port identifier to the port in response to the switch leaving and rejoining the spanning tree. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-executed method, comprising:
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assign a port identifier to a port of a switch; storing, in an entry of a port identifier allocation table of the switch, the assigned port identifier; participating in a spanning tree using the port identifier; and reassigning the port identifier to the port in response to the switch leaving and rejoining the spanning tree. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer system, comprising:
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a processor; and a storage device coupled to the processor and storing instructions which when executed by the processor cause the processor to perform a method, the method comprising; assign a port identifier to a port of a switch; storing, in an entry of a port identifier allocation table of the switch, the assigned port identifier; participating in a spanning tree using the port identifier; and reassigning the port identifier to the port in response to the switch leaving and rejoining the spanning tree. - View Dependent Claims (18, 19, 20)
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Specification