Aggregating BGP routes in Massive Scale Data Centers

Document Type Expired Internet-Draft (individual)
Last updated 2019-04-25 (latest revision 2018-10-22)
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A design for a fabric of switches to connect up to one million servers in a data center is described. At that scale, it is impractical for every switch to maintain knowledge about every other switch and every other link in the fabric. Aggregation of routes is an excellent way to scale such a fabric. However, aggregation presents some problems under link failures or switch failures. This design solves those problems.


Jakob Heitz (
Dhananjaya Rao (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)