At 11:43 01.12.99 -0500, Christian Huitema wrote:
>At 10:49 PM 11/30/99 -0500, Keith Moore wrote:
>
> >note also that DNS is often slow, and seems less reliable than IP.
> >by increasing the reliance on DNS you increase the probability of failure.
>
>Data point: out of 40,000 random DNS requests logged on my work station
>over the last year, 20% underwent at least one retransmission, resulting in
>service times larger than 2 seconds. The average packet loss rate on the
>regular IP service only explain about half of these retransmissions, which
>makes me suspect that a lot of additional losses are caused by congested
>DNS servers. Increasing our reliance on the DNS is definitely not a good idea.
(Wow - a real measurement! Can this be the IETF list....? Thanks!)
Question: Out of those 8.000 retransmitted DNS queries, do you have any
data on how many eventually returned data, versus how many resulted in
NXDOMAIN or no data?
There used to be a bug with caching of negative responses....
Harald
--
Harald Tveit Alvestrand, EDB Maxware, Norway
[EMAIL PROTECTED]
