Juniper Networks, Inc.
Guaranteed bandwidth for segment routed (SR) paths

Abstract:

At least one bandwidth-guaranteed segment routing (SR) path through a network is determined by: (a) receiving, as input, a bandwidth demand value; (b) obtaining network information; (c) determining a constrained shortest multipath (CSG.sub.i); (d) determining a set of SR segment-list(s) (S.sub.i=[sl.sub.1.sup.i, sl.sub.2.sup.i . . . sl.sub.n.sup.i]) a that are needed to steer traffic over CSG.sub.i; and (e) tuning the loadshares in L.sub.i, using S.sub.i and the per segment-list loadshare (L.sub.i=[l.sub.1.sup.i, l.sub.2.sup.i . . . l.sub.n.sup.i]), the per segment equal cost multipath ("ECMP"), and the per link residual capacity, such that the bandwidth capacity that can be carried over CSG.sub.i is maximized.