Redundant host connection in a routed network
First Claim
Patent Images
1. A switch, comprising:
- a processor; and
a memory coupled to the processor and storing instructions which when executed cause the processor to;
determining an output port for a frame based on Ethernet header of the frame;
operate the switch in conjunction with a separate physical switch asa single logical switch;
assign a virtual switch identifier to the logical switch; and
mark an ingress-switch field of the frame with the virtual switch identifier;
wherein the switch is a layer-2 switch capable of routing without requiring the network topology to be based on a spanning tree topology.
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Abstract
One embodiment of the present invention provides a switch. The switch includes a management mechanism and a configuration mechanism. During operation, the management mechanism is configured to operate the switch in conjunction with the partner switch as a single logical switch. The configuration mechanism is configured to assign a virtual switch identifier to the logical switch.
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Citations
22 Claims
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1. A switch, comprising:
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a processor; and a memory coupled to the processor and storing instructions which when executed cause the processor to; determining an output port for a frame based on Ethernet header of the frame; operate the switch in conjunction with a separate physical switch as a single logical switch; assign a virtual switch identifier to the logical switch; and mark an ingress-switch field of the frame with the virtual switch identifier; wherein the switch is a layer-2 switch capable of routing without requiring the network topology to be based on a spanning tree topology. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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determining an output port for a frame received at a switch based on Ethernet header of the frame; configuring the switch as a single logical switch which includes one or more separate physical switches; assigning a virtual switch identifier to the logical switch; marking an ingress-switch field of the frame with the virtual switch identifier; and performing a layer-2 routing function without requiring the network topology to be based on a spanning tree topology. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A switch means, comprising:
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a frame processing means for determining an output port for a frame based on Ethernet header of the frame; an inter-switch communication means for communicating with a separate physical switch; a management means for operating the switch in conjunction with the separate physical switch as a single logical switch; a configuration means for assigning a virtual switch identifier to the logical switch; a frame-marking means for marking an ingress-switch field of the frame with the virtual switch identifier; and a routing means for performing a layer-2 routing function without requiring the network topology to be based on a spanning tree topology. - View Dependent Claims (22)
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Specification