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Migration of centralized routing components of logical router

  • US 10,616,045 B2
  • Filed: 03/06/2017
  • Issued: 04/07/2020
  • Est. Priority Date: 12/22/2016
  • Status: Active Grant
First Claim
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1. For a controller that manages a physical network that implements a plurality of logical networks comprising a plurality of logical routers, a method comprising:

  • receiving a command to migrate a particular centralized routing component of a logical router from a first host computer on which the particular centralized routing component operates to a second host computer, wherein at least one other centralized routing component of the logical router is implemented on at least one other host computer in the physical network, wherein the particular centralized routing component operates with an administrative state set to active that is shared with the at least one other centralized routing component of the logical router;

    identifying the first host computer on which the particular centralized routing component operates, wherein at least one other centralized routing component of another logical router also operates on the identified first host computer; and

    of the host computers on which centralized routing components operate, directing only the identified first host computer to cause the particular centralized routing component (i) to change to an inactive administrative state in order to facilitate migration of the particular centralized routing component and (ii) to share the change to the inactive administrative state with the at least one other centralized routing component of the logical router, wherein the at least one other centralized routing component of the logical router uses the administrative state of the particular centralized routing component along with administrative states of the at least one other centralized routing component to determine an active centralized routing component for the logical router.

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