1 / 7

Large Flow Classification in Flow Aware Routing draft-yong-pwe3-lfc-fat-pw-01

Large Flow Classification in Flow Aware Routing draft-yong-pwe3-lfc-fat-pw-01. {lucyyong,yangpeilin}@huawei.com. traffic flows. ECMP Paths. Flow Based Routing in PSN. Used in equal cost multi paths (ECMP) for load balance Hashing dispersion is the common practice simple and stateless

amos
Download Presentation

Large Flow Classification in Flow Aware Routing draft-yong-pwe3-lfc-fat-pw-01

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Large Flow Classification in Flow Aware Routingdraft-yong-pwe3-lfc-fat-pw-01 {lucyyong,yangpeilin}@huawei.com IETF78, Maastricht Netherlands

  2. traffic flows ECMP Paths Flow Based Routing in PSN • Used in equal cost multi paths (ECMP) for load balance • Hashing dispersion is the common practice • simple and stateless • works well if # of flows are substantially large and the bandwidth per flow are well balanced IETF78, Maastricht Netherlands

  3. Source from Caida Source from Carrier Flow Traffic Pattern • Today’s Flow traffic pattern does not show the bandwidth balance in Internet and carrier network • Few flows with significant high rates while the rest are very low rate • Flow traffic pattern indicate that hashing load balance has an issue • uneven load balance due to the unbalanced flow BW IETF78, Maastricht Netherlands http://www.caida.org/data/monitor

  4. Propose Large Flow Classification • Differentiate large flow packets from the rest of packets enable different treatments • Apply different flow routing algorithms for the small flow packets and the large flow packets • Split ECMP paths for small flows and large flows • Or other implementation • Simulation show the significant improvement on flow pattern with unbalanced BW Note: LFC is only used in flow routing, is not used in packet forward and DiffServ process IETF78, Maastricht Netherlands

  5. Load Balance Improvement w/ LFC • In E-ECMP, the difference between high and low path utilization is less than 10% of the path capacity, STD is 0.0328 • In T-ECMP, the difference between high and low path utilization can be over 50% of the path capacity, STD is 0.1939 IETF78, Maastricht Netherlands

  6. Change From Previous • Move Enhanced ECMP section to Appendix • Propose for large flow classification for load balance • Change the draft name • Text Editing IETF78, Maastricht Netherlands

  7. Acknowledgement Authors like to thank Stewart Bryant, Frederic Jounay, Simon Delord, Raymond Key for their review and comments Next Step - Open for more feedbacks - Adopt as WG draft  IETF78, Maastricht Netherlands

More Related