[prev in list] [next in list] [prev in thread] [next in thread]
List: namedroppers
Subject: I-D ACTION:draft-ietf-dnsind-ncache-06.txt
From: Internet-Drafts () ietf ! org
Date: 1997-09-09 13:46:30
[Download RAW message or body]
A Revised Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the DNS IXFR, Notification, and Dynamic Update Working Group of the IETF.
Title : Negative Caching of DNS Queries (DNS NCACHE)
Author(s) : M. Andrews
Filename : draft-ietf-dnsind-ncache-06.txt
Pages : 16
Date : 3-Sep-97
[RFC1034] provided a description of how to cache negative
responses. It however had a fundamental flaw in that it did not allow
a name server to hand out those cached responses to other
resolvers, thereby greatly reducing the effect of the caching.
This document addresses issues raise in the light of experience
and replaces [RFC1034 Section 4.3.4].
Negative caching was an optional part of the DNS specification
and deals with the caching of the non-existence of an RRset
[RFC2181] or domain name.
Negative caching is useful as it reduces the response time for
negative answers. It also reduces the number of messages that
have to be sent between resolvers and name servers hence overall
network traffic. A large proportion of DNS traffic on the
Internet could be eliminated if all resolvers implemented negative
caching. With this in mind negative caching should no
longer be seen as an optional part of a DNS resolver.
Internet-Drafts are available by anonymous FTP. Login wih the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
"get draft-ietf-dnsind-ncache-06.txt".
A URL for the Internet-Draft is:
ftp://ds.internic.net/internet-drafts/draft-ietf-dnsind-ncache-06.txt
Internet-Drafts directories are located at:
Africa: ftp.is.co.za
Europe: ftp.nordu.net
ftp.nis.garr.it
Pacific Rim: munnari.oz.au
US East Coast: ds.internic.net
US West Coast: ftp.isi.edu
Internet-Drafts are also available by mail.
Send a message to: mailserv@ds.internic.net. In the body type:
"FILE /internet-drafts/draft-ietf-dnsind-ncache-06.txt".
NOTE: The mail server at ds.internic.net can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e. documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
[Attachment #3 (Multipart/Alternative)]
[Attachment #5 (Message/External-body)]
Content-Type: text/plain
Content-ID: <19970903120917.I-D@ietf.org>
ENCODING mime
FILE /internet-drafts/draft-ietf-dnsind-ncache-06.txt
["draft-ietf-dnsind-ncache-06.txt" (Message/External-body)]
Content-Type: text/plain
Content-ID: <19970903120917.I-D@ietf.org>
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic