Method and system for inter-domain loop protection using a hierarchy of loop resolving protocols
AssigneeExtreme Networks, Inc.
InventorsXuguang Yang, Prakash Kashyap
Life of this patent
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Abstract
A method and system is provided for inter-domain loop protection using a hierarchy of loop resolving protocols. The method includes receiving messages from inter-domain switches. The inter-domain switches belong to a plurality of loop-free network topology domains. A logical domain is abstracted that includes the inter-domain switches and logical links that connect the switches. Each logical link represents one of the physical loop free network topology domains that the inter-domain switches belong to. Then, the loops in the logical domain are eliminated. One or more logical links and ports associated with those logical links may be blocked to break the loops. This provides for a network free of inter-domain loops.
Claims23
A method comprising:
- receiving messages from at least two inter-domain switches, wherein each switch is a member of at least one virtual local area network and a plurality of physical loop free network topology domains;
- abstracting a logical domain, wherein the logical domain comprises the inter-domain switches and at least one logical link that connects the inter-domain switches, each logical link representing one of the plurality of physical loop free network topology domains;
- and
- eliminating loops formed by the logical links in the logical domain.
A network comprising:
- a plurality of physical loop free network topology domains;
- inter-domain switches, wherein each inter-domain switch is a member of at least two of the plurality of physical loop free network topology domains;
- and
- a logical domain abstracted from the inter-domain switches and logical links connecting the inter-domain switches, wherein each logical link represents one of the plurality of physical loop free network topology domains.
An article of manufacture comprising:
- a machine accessible medium including content that when accessed by a machine causes the machine to:
- receive messages from at least two inter-domain switches, wherein each switch is a member of at least one virtual local area network and a plurality of physical loop free network topology domains;
- abstract a logical domain, wherein the logical domain comprises the inter-domain switches and at least one logical link that connects the inter-domain switches, each logical link representing one of the plurality of physical loop free network topology domains;
- and
- eliminate loops formed by the logical links in the logical domain.
Dependencies are inferred from the claim text.