×

Link policy routing based on link utilization

  • US 9,722,928 B2
  • Filed: 04/05/2012
  • Issued: 08/01/2017
  • Est. Priority Date: 05/09/2005
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • calculating, by a processor, a first link utilization of a first link and a second link utilization of one or more second links, wherein the first link utilization is calculated based on first traffic associated with a plurality of first prefixes routed through the first link, and wherein the second link utilization is calculated based on second traffic associated with one or more second prefixes routed through the one or more second links;

    determining that the second link utilization is lower than a second link utilization threshold associated with the one or more second links;

    determining that the first link is out-of-policy (OOP) with respect to a first link policy when the first link utilization surpasses a first link utilization threshold of the first link;

    determining an overall excess utilization of the first link, the overall excess utilization corresponding to a difference between the first link utilization and the first link utilization threshold;

    receiving a configurable utilization amount such that the first link is in-policy with respect to the first link policy when the first link utilization is lower than the first link utilization threshold and the configurable utilization amount;

    identifying a subset of prefixes, from the plurality of first prefixes routed through the first link, having a total utilization that is;

    greater than the overall excess utilization of the first link and the configurable utilization amount; and

    lower than the second link utilization threshold associated with the one or more second links; and

    redirecting the subset of prefixes through the one or more second links.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×