Multi-stage switch fabric
AssigneeHuawei Technologies Co., Ltd.
InventorYun Lin
Life of this patent
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Abstract
A multi-stage switch fabric (SF) is provided. The multi-stage SF includes a line card chassis (LCC) and a fabric card chassis (FCC). The FCC includes a stage-1 switch element (S1), a stage-2 switch element (S2), and a stage-3 switch element (S3), where the S3 corresponds to the S1, and the S2 is coupled to the S1 and S3 respectively. The LCC includes an interface component and a line card (LC) coupled to the interface component, where the interface component is coupled to the S1 and S3 in the FCC respectively. Through the technical solution under the present invention, when a switch element generates flow control information and requires another switch element or an LC to respond to the flow control information, a timely response can be received.
Claims5
A multi-stage switch fabric (SF) comprising:
- a fabric card chassis (FCC) comprising,
- a stage-1 switch element (S1),
- a first buffer area bound to S1,
- a stage-2 switch element (S2), and
- a stage-3 switch element (S3),
- a second buffer area bound to S3,
- wherein the S3 corresponds to the S1, and the S2 is coupled to the S1 and S3 respectively;
- a signal cable;
- a line card chassis (LCC) comprising a line card (LC) and an interface coupled to the LC, the interface configured to receive packets from the LC and switch the received packets to the first buffer area via a first path of the signal cable, the interface configured to receive packets from the second buffer area via a second path of the signal cable and switch the received packets to the LC;
- and
- wherein the interface comprises a stage-0 switch element (S0) configured to:
- switch packets from one LC in the LCC to another LC in the LCC, and
- switch packets from the LC in the LCC to the S1 in the FCC, and
- switch packets received from the S3 in the FCC to the LC in the LCC.
Dependencies are inferred from the claim text.