~/talk

Starfish: A Topology-Routing Co-Design for Small-Scale Data Centers

on YouTube 19m
Talkat NSDI '26 · 2026-05-04..05-06· [networking, software-architecture]

speakers

name:Anchengcheng Zhou
links:none on file
name:Vipul Harsh
links:none on file
name:Sangeetha Abdu Jyothi
bluesky:ajsangeetha.bsky.social
name:Maria Apostolaki
links:none on file
name:Brighten Godfrey
x:BrightenGodfrey

resources

video:https://youtu.be/iOh9B2k6rNU
slides:none on file

summary

Starfish rearranges existing switches into a DRing double‑ring topology and implements a Shortest Near K routing scheme using VRF partitions and BGP (prototype in GNS3), evaluated with an HTSim packet‑level simulator. Without new hardware it supports 56% more traffic than leaf‑spine, enables Jellyfish to gain 52%, and beats VLB by 26% on traces. Supports oblivious and semi‑oblivious weight assignment and withstands random link failures with worst slowdown ≈1.37.

AI-written summary · about

chapters (8)

  1. 0:00Starfish introduction and goals
  2. 2:50Small-scale DC design challenges
  3. 6:20Resolving the trilemma
  4. 7:04Starfish topology: D-ring
  5. 9:13Starfish routing: Shortest Near K
  6. 13:13Weight assignment and traffic
  7. 14:36Starfish performance evaluation
  8. 17:52Conclusion and future

related talks

~/search
type to search 6,249 conferences, 138,987 speakers and 185,172 talks
~/help
cmdctrl k
search every conference, speaker and series
/
focus the filter search
h
home
c
conferences
s
speakers
e
series
t
light / dark — the status bar button does the same
?
this help
esc
close this, then clear every filter — or just the search, while you are typing in it

Ignored while you are typing. Pages without a filter rail have no search to focus.