DNS IXFR, Notification, and Dynamic Update (dnsind)

Status: Concluded January, 2000 
 Randy Bush 
 Olafur Gudmundsson 
Description of Working Group:
The DNS Incremental Transfer, Notification, and Dynamic Update Working
Group is concerned with three areas of future DNS protocol
 1. Incremental Zone Transfer - As the sizes of some zone files have 
    quite large, it is believed that a protocol addition to allow the
    transfer of only the changed subset of a zone will reduce net 
    and the load on critical servers.
 2. Change Notification - There can be large time intervals during which
    at least one secondary has data that is inconsistent with the 
    The proposed ``notify'' mechanism (where the primary sends a message
    to known secondaries) facilitates fast convergence of servers
    vis-a-vis consistency of data in the zones.
 3. Dynamic Update - The need to frequently update small portions of a
    large zone and to have those updates propagate is perceived.

Request for Comments:

  • RFC1982 Serial Number Arithmetic (Proposed Standard)
  • RFC1995 Incremental Zone Transfer in DNS (Proposed Standard)
  • RFC1996 A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY) (Proposed Standard)
  • RFC2136 Dynamic Updates in the Domain Name System (DNS UPDATE) (Proposed Standard)
  • RFC2181 Clarifications to the DNS Specification (Proposed Standard)
  • RFC2182 Selection and Operation of Secondary DNS Servers (BCP)
  • RFC2308 Negative Caching of DNS Queries (DNS NCACHE) (Proposed Standard)
  • RFC2317 Classless IN-ADDR.ARPA delegation (BCP)
  • RFC2606 Reserved Top Level DNS Names (BCP)
  • RFC2671 Extension mechanisms for DNS (EDNS0) (Proposed Standard)
  • RFC2672 Non-Terminal DNS Name Redirection (Proposed Standard)
  • RFC2673 Binary Labels in the Domain Name System (Proposed Standard)