EDX - Edge Exchanger
draft-edx-edge-exchanger-00

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Last updated 2019-10-22
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Internet Draft                                            Sweta Jaiswal
<draft-edx-edge-exchanger-00.txt>                         Karthikeyan A.
Intended status: Standards Track                         Jamsheeed M. P.
Expires: April 25, 2020                                Siva Sabareesh D.
                                                           Madhan Raj K.
                                                        October 23, 2019

                          EDX - Edge Exchanger
                      draft-edx-edge-exchanger-00

Abstract          

   This document describes a new DNS resource record (RR) type, called
   the Edge Exchanger (EDX) RR, that is used to find services and
   location of the server(s) for any specific domain (the word domain is
   used here in the strict RFC1034 sense). 

Status of this Memo

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

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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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                         Expires April 25, 2020                 [Page 1]
Internet Draft                                          October 23, 2019

Table of Contents

   1. Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2. Applicability Statement . . . . . . . . . . . . . . . . . . . .  3
   3. EDX Resource Record Format  . . . . . . . . . . . . . . . . . .  3
     3.1.  Example Data . . . . . . . . . . . . . . . . . . . . . . .  4
     3.2.  EDX RDATA Wire Format  . . . . . . . . . . . . . . . . . .  5
   4. Usage Rules . . . . . . . . . . . . . . . . . . . . . . . . . .  6
   5. Usage Scenarios . . . . . . . . . . . . . . . . . . . . . . . .  6
     5.1. Query without knowing the service name  . . . . . . . . . .  6
     5.2. A new way to explore available services . . . . . . . . . .  6
     5.3. Discover the edge servers . . . . . . . . . . . . . . . . .  7
     5.4. A platform to advertise the available services  . . . . . .  7
   6. IANA considerations . . . . . . . . . . . . . . . . . . . . . .  7
   7. Security Considerations . . . . . . . . . . . . . . . . . . . .  7
     7.1. Attacker Tampering with an Insecure EDX RR  . . . . . . . .  7
     7.2. Response Data . . . . . . . . . . . . . . . . . . . . . . .  8
     7.3. Error Handling  . . . . . . . . . . . . . . . . . . . . . .  8
   8. References  . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     8.1. Normative References  . . . . . . . . . . . . . . . . . . .  8
     8.2. Informative References  . . . . . . . . . . . . . . . . . .  9
   Author's Addresses . . . . . . . . . . . . . . . . . . . . . . . .  9

1. Introduction

   This document proposes a new Resource Record (RR) named Edge
   Exchanger (EDX) for the Domain Name System (DNS) [RFC1034] and its
   application usage. This document specifies how this DNS resource
   record helps client in finding lowest latency servers and also
   facilitate service discovery given the correct domain name.

   Currently, the service discovery can be done using SRV resource
   record type where the client requests for a specific service and
   protocol for a domain name and receives the target host and port
   where the service instance can be reached. To connect to the target
   host client needs to perform DNS resolution to fetch the IP address.
   Hence, we propose DNS EDX RR which provides a platform for clients to
   discover the services available for a domain name with list of
   primary IP address, running services and port information.

   At present, there is no way to find all the services available in a
   server using one DNS query. The new RR EDX allow servers to advertise
   its services to all users as well as it enables client to find the
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