[Rdma-cc-interest] Congestion Control for Large Scale Data Center Networks

["Roni Even (A)" <[e-mail]>]

Hi,
We had side meetings at the last two IETF meeting about better congestion control for data centers with good number of participants.

The high throughput of the Data center networks require a good congestion control for data centers should provide low latency, fast convergence and high link utilization.  Since multiple  applications with different requirements may run on the DC network it  is important to provide fairness between different applications that may use different congestion algorithms.  An important issue from the  user perspective is to achieve short Flow Completion Time (FCT).

It is clear that we are not going to make changes to ROCE but we still would like to look at good e2e congestion control. Currently there are multiple published work presented in different papers (examples are DCQCN, HPCC, RPC) but it will be good if the IETF will be able to recommend an e2e congestion protocol that will allow interoperability between vendors and that will leverage the information from the network .

We would like to have a side meeting in Singapore and intend to submit a draft that will discussed the different options hoping to be able to collaborate between the interested people to work on a common direction.

Regards
Roni Even