CPC H04L 47/122 (2013.01) [H04L 43/0882 (2013.01); H04L 45/34 (2013.01); H04L 45/50 (2013.01); H04L 45/70 (2013.01); H04L 47/11 (2013.01); H04L 47/125 (2013.01); H04L 47/35 (2013.01); H04L 45/22 (2013.01)] | 17 Claims |
1. A Label Edge Router (LER) in a Segment Routing (SR) network configured to perform SR Traffic Engineering (SR-TE), the LER comprising:
circuitry configured to:
receive link utilization measurements flooded by one or more Label Switch Routers (LSRs)
wherein the link utilization measurements are for links associated with one or more SR tunnels;
determine whether the one or more SR tunnels are congested, based on one or more of an unreserved bandwidth, a maximum reservable bandwidth, and a maximum bandwidth of corresponding links, where a given SR tunnel is determined to be congested based on one or more of (1) a negative value of the unreserved bandwidth, (2) the maximum reservable bandwidth being greater than the maximum bandwidth, and (3) the maximum reservable bandwidth being equal to the maximum bandwidth; and
perform one or more routing actions for the one or more SR tunnels based on the determination.
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