IP Location Load Balancing Resource Record

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Last updated 2019-03-24
Replaces draft-sonoda-dnsop-dnslb
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Domain Name System Operations                                Sonoda, Ed.
Internet-Draft                            Internet Initiative Japan Inc.
Intended status: Informational                              Mar 24, 2019
Expires: September 25, 2019

               IP Location Load Balancing Resource Record


   This document defines a new DNS load balance function that is able to
   transfer information in zone transfer and not need online signing.
   DNS base load balance is popular technology.  It provides weight base
   response and location base response.  It have become an indispensable
   part of traffic engineering.  However, DNS base load balance can't
   transfer load balance information in zone transfer and need online
   singing because it is not standardized.  This document defines a new
   DNS resource record called "LB".  LB RR provides the balancing
   information weight, location and target domain name.

Status of This Memo

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   This Internet-Draft will expire on September 25, 2019.

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   to this document.  Code Components extracted from this document must
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1.  Introduction

1.1.  Current DNS load balancing

   Current DNS load balancing provides traffic engineering.It use
   special authoritative name server.  It response is one address record
   that is dynamic changes using network location and weight.  It's used
   for large traffic WEB site domain name that is important domain name.
   Important domain name should be secure.

   But Current DNS load balancing is not secure.  Because Current DNS
   load balancing can't send zone data by zone transfer.  It's mean very
   difficult to use multi service providers.  That means weak for DDoS
   Attack.  If zone is signed, All name servers require private key for
   dynamic signing because response is dynamic changes.  Distributing
   private key is not secure, It is increased risk of leakage private

1.2.  Propose new DNS load balancing

   Propose new DNS load balancing concept is that Authoritative name
   server uses "LB" RR to provide load balancing information and Clients
   application uses "LB" RR to select target name.

   "LB" RR defines load balancing settings that is network location and
   weight and target domain name.  Network location is string that
   meaningful name of network.  For example Country code (ex.
   JP),subdivision code(ex.  US-CA) and Autonomous System Number (ex.
   AS65536).  Weight is ratio value to use select target name.  Target
   name is pointer to address record.

   "location.server" is special TXT record that is location information
   at full service resolver.  Application can use this value for
   location selection.

2.  The LB Resource Record

   The LB RR has mnemonic LB.  LB RR define load balancing information.

   LB format below.

         <owner> <ttl> <class> LB <weight> <location> <target>

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   The format is not class-sensitive.  All fields are required.

   <weight> field is a 2 octets, 1 or more natural number.

   <location> field is a "<character-string>" [RFC1035].

   <target> field is a "<domain-name>" [RFC1035].

2.1.  Define location

   <location> ::= "*" | <continental code> | <country code> |
   <subdivision code> | <asn code> | <private code>

   <region code> ::= "AF" | "NA" | "AS" | "EU" | "NA" | "OC" | "SA"

   <country code> ::= ISO 3166-1 alpha-2 Country code.

   <subdivision code> ::= ISO 3166-2 Codes for the representation of
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