@techreport{kompella-teas-mpte-03,
    number =    {draft-kompella-teas-mpte-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-kompella-teas-mpte/03/},
    author =    {Kireeti Kompella and Luay Jalil and Mazen Khaddam and Andy Smith},
    title =     {{Multipath Traffic Engineering}},
    pagetotal = 23,
    year =      2026,
    month =     jul,
    day =       6,
    abstract =  {Shortest path routing offers an easy-to-understand, easy-to-implement method of establishing loop-free connectivity in a network, but offers few other features. Equal-cost multipath (ECMP), a simple extension, uses multiple equal-cost paths between any two points in a network: at any node in a path (really, Directed Acyclic Graph), traffic can be (typically equally) load-balanced among the next hops. ECMP is easy to add on to shortest path routing, and offers a few more features, such as resiliency and load distribution, but the feature set is still quite limited. Traffic Engineering (TE), on the other hand, offers a very rich toolkit for managing traffic flows and the paths they take in a network. A TE network can have link attributes such as bandwidth, colors, risk groups and alternate metrics. A TE path can use these attributes to include or avoid certain links, increase path diversity, manage bandwidth reservations, improve service experience, and offer protection paths. However, TE typically doesn't offer multipathing as the tunnels used to implement TE usually take a single path. This memo proposes multipath traffic-engineering (MPTE), combining the best of ECMP and TE. The multipathing proposed here need not be strictly equal-cost, allowing for some "slack" to admit more paths. The load balancing at each hop is optimally weighted to each next hop rather than always being equally weighted. Moreover, traffic can enter and leave an MPTE construct via multiple ingresses and egresses. The proposal includes several choices of control and data planes.},
}