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External loop detection for an ethernet fabric switch

  • US 9,007,958 B2
  • Filed: 05/30/2012
  • Issued: 04/14/2015
  • Est. Priority Date: 06/29/2011
  • Status: Expired due to Fees
First Claim
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1. A switch, comprising:

  • a receiving interface adapted to identify a loop-detection frame which includes a first identifier identifying an originating switch of the loop-detection frame;

    a loop-detection module adapted to detect a loop based on a match between the first identifier identifying the originating switch and a fabric identifier identifying an Ethernet fabric switch, wherein the Ethernet fabric switch comprises a number of physical switches and functions as a single switch, wherein the Ethernet fabric switch is distinct from a virtual local area network (VLAN) and can accommodate multiple VLANs, and wherein the switch comprising the receiving interface is a member of the Ethernet fabric switch; and

    an interface control module adapted to preclude, in response to detecting the loop, from forwarding frames corresponding to the loop.

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