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