If all your IP addresses are "soft", then DNS lookups are really a waste
of CPU cycles, because the IP name doesn't tell you anything useful
(especially if the name when you do the DNS lookup isn't the same as the
name when the access occurred).
If you are only doing DSN lookups to get the subnet information, you
should be able to achieve the same effect with the HOSTALIAS command, as
Steve suggests.
(There have been a couple of threads on this topic recently - if anyone
has set up Analog to do this kind of Intranet analasys, using HOSTALIAS
to create reports by department or location, I'd apreciate it if you'd
describe what you're doing, and the choices you've made in your
configuration).
Of course, the other option would be to have the Web server log machine
names, rather than addresses. If your machine names are actually
meaningful when they are assigned (eg they include the users logonid or
office location), this might be well worth doing, depending on the load
on your Web server. But, in the case of IIS at least, there's a gotcha -
if you configure it to do name resolution, it will refuse access to any
machine who's address doesn't resolve.
Aengus
______________________________ Reply Separator _________________________________
Subject: [analog-help] A Genaral DNS-Lookup question
Author: [EMAIL PROTECTED] at Internet
Date: 7/16/99 10:53 AM
hello,
i am working in a department within a big intranet (40.000-50.000 clients). The
IP-Adresses were given dynamicaly within fixed IP-Ranges for each department.
>From time to time, analog starts a new DNS-Lookup over the stored IP-Adresses in
the log-files. But when the former used IP-Adresses are currently not used, he
can't resolve the DNS entry.
This won't be helpful, because i always got 40% - 60% of unresolved IP-Adresses
in my reports. The DNS-Cache files grows larger and larger and the "Time to
live" for each IP-Adress is only for the moment analog generates the statistics.
Maybe there is a way, to stop analog from doing a new dns-lookup ?? But how many
does this statistics say about the visitors ? not many, i think ;-(
But what would be, if analog can create a relation between the resolved
DNS-Entry and the former and actual IP-Adress and store it within a list. OK, it
could grow very large, but when you have space for the log files, then you will
also have space for the DNS-Cache file ?!?
Gerit
------------------------------------------------------------------------
This is the analog-help mailing list. To unsubscribe from this
mailing list, send mail to [EMAIL PROTECTED]
with "unsubscribe analog-help" in the main BODY OF THE MESSAGE.
List archived at http://www.mail-archive.com/[email protected]/
------------------------------------------------------------------------
------------------------------------------------------------------------
This is the analog-help mailing list. To unsubscribe from this
mailing list, send mail to [EMAIL PROTECTED]
with "unsubscribe analog-help" in the main BODY OF THE MESSAGE.
List archived at http://www.mail-archive.com/[email protected]/
------------------------------------------------------------------------
