Routing Optimization with SDN in Data Center Networks
draft-kong-sdnrg-routing-optimization-sdn-in-dc-05

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SDNRG                                                         Q. Kong
Internet Draft                                                 T. Gao
Intended status: Informational                                   BUPT
Expires: April 2019                                           D. Wang
                                                              Z. Wang
                                                              J. Wang
                                                                  ZTE
                                                               B. Guo
                                                             S. Huang
                                                                 BUPT
                                                     October 05, 2018

           Routing Optimization with SDN in Data Center Networks
             draft-kong-sdnrg-routing-optimization-sdn-in-dc-05

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   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on April 05, 2019.

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   This document is subject to BCP 78 and the IETF Trust's Legal
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Internet-Draft  Routing Optimization with SDN in DC Networks  October 2018

   publication of this document.  Please review these documents
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Abstract

   With the open and standard programmatic interface and the flexibility
   of controlling network, Software Defined Network (SDN) can obviously
   simplify and integrate operation and business support systems. As a
   consequence, to satisfy the rising switching demand in the data
   center network, it is a good option to adopt SDN technology. In
   addition, current architecture of data center network is far from
   ideality, which results in the low utilization rate in bandwidth
   resource. For example, mice flow cannot be well effectively served in
   the conventional Wavelength Division Multiplexing (WDM) optical
   network with at least 50GHz spectrum interval. From a data center
   network perspective, it is necessary to further improve the resource
   utilization efficiency and the flexibility of coping with different
   traffic.

   This document described an optical data center interconnect, which
   comprises both the fixed and flexible grid transceivers. A traffic
   monitor is implemented in the SDN-based data center network to
   evaluate the coming traffic demands and allocate appropriate spectrum
   for the request. For instance, mice flow can be served by fixed grid
   transceivers, well the elephant flows can be transmitted by the
   flexi-grid transceiver using multiple subcarriers to form a
   superchannel. Thus, spectrum efficiency is optimized and bandwidth
   utilization is improved dramatically.

Table of Contents

   1. Introduction ................................................ 3
   2. Conventions used in this document ........................... 3
   3. Required Technology ......................................... 4
   4. Data center interconnect .................................... 5
   5. Traffic-Monitor based routing in data center networks ....... 6
   6. Dynamic traffic demand recognition scheme ................... 7
   7. Security Considerations ..................................... 8
   8. IANA Considerations ......................................... 8
   9. Conclusions and Use Cases ................................... 8
   10. References ................................................. 9
      10.1. Normative References .................................. 9
      10.2. Informative References  ............................... 9

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1. Introduction

   The bandwidth bottleneck and growing power requirements have become