Seamless Interconnect Underlay to Cloud Overlay Problem Statement
draft-dm-net2cloud-problem-statement-03

Document Type Active Internet-Draft (individual)
Last updated 2018-10-21
Replaces draft-dm-vpn-ext-to-cloud-dc-problem-statement
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Network Working Group                                         L. Dunbar
Internet Draft                                                 A. Malis
Intended status: Informational                                   Huawei
Expires: January 2018                                      C. Jacquenet
                                                                 Orange
                                                                 M. Toy
                                                                Verizon
                                                       October 21, 2018

     Seamless Interconnect Underlay to Cloud Overlay Problem Statement
                  draft-dm-net2cloud-problem-statement-03

Abstract

   This document describes the problems of enterprises face today in
   connecting their branch offices to dynamic workloads in third party
   data centers (a.k.a. Cloud DCs).

   It examines some of the approaches for interconnecting workloads &
   applications hosted in cloud DCs with enterprises' on-premises DCs &
   branch offices. This document also describes some of the (network)
   problems that many enterprises face when they have workloads &
   applications & data split among hybrid data centers, especially for
   those enterprises with multiple sites that are already
   interconnected by VPNs (e.g. MPLS L2VPN/L3VPN) and leased lines.

   Current operational problems in the field are examined to determine
   whether there is a need for enhancements to existing protocols or
   whether a new protocol is necessary to solve them.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79. This document may not be modified,
   and derivative works of it may not be created, except to publish it
   as an RFC and to translate it into languages other than English.

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Internet-Draft        Net2Cloud Problem Statement          October 2018

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Table of Contents

   1. Introduction...................................................3
   2. Definition of terms............................................4
   3. Current Practices in Interconnecting Enterprise Sites with Cloud
   DCs...............................................................5
      3.1. Interconnect to Cloud DCs.................................5

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Internet-Draft        Net2Cloud Problem Statement          October 2018

      3.2. Interconnect to Hybrid Cloud DCs..........................7
      3.3. Connecting workloads among hybrid Cloud DCs...............7
   4. Desired Properties for Networking that interconnects Hybrid Cloud
   DCs...............................................................8
   5. Problems with MPLS-based VPNs extending to Hybrid Cloud DCs....8
   6. Problem with using IPsec tunnels to Cloud DCs.................10
      6.1. Complexity of multi-point any-to-any interconnection.....10
      6.2. Poor performance over long distance......................11
      6.3. Scaling Issues with IPsec Tunnels........................11
   7. Problems of Using SD-WAN to connect to Cloud DCs..............11
      7.1. SD-WAN among branch offices vs. interconnect to Cloud DCs12
   8. End-to-End Security Concerns for Data Flows...................14
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