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>Donovan Watts said:
Re: how long of delay with ip address change?
From: Men & Mice Support
Date: Friday, June 11, 1999
Time: 3:24:00 am
>
>>I moved my mail server to another machine so I had to update the new IP
>>address in QuickDNS Admin. Now I can't reach my mail server by name
>>(mail.websurfhawaii.com), only by it's new IP address.
Try using your own DNS server for a resolver (in the TCP/IP control panel).
>>Now, how long must I wait for this to filter through so everything is back
>>to normal? Must I do anything else or tell anyone else, like my ISP about
>>this change?
>
>You will want to contact your Upscale provider if they do your secondary
>DNS, so that they can do a reboot to speed up the process.
>
>Essentially it will take a bit to make its way around to all the Name
>servers on the net. Once it does and they cache this new info then you
>will be set. I have seen it take anywhere from 12 hours to 5 days for
>this type of change to occur globally.
>
>Also make sure you Time to Live is not set to high.
Theoretically, this is based on the values in the SOA record (Domain
Information dialog in QDNS Admin).
The refresh value is how long until the secondary server(s) check the
primary for a new version.
The retry value is how often the secondaries retry if the primary is not
available.
The minimum is the default TTL for all records without their own explicit TTLs.
The TTL of any record is how long that record is cacheable by other servers
out on the net. Of course, some broken servers ignore the TTL, and will
cache stuff for 2 or 3 days.
>>In the same vein, what if I want to move my _name server_ to a different
>>machine? I move QDNS Pro and update my records with Admin but must I let my
>>ISP know since he is my ADSL connection as well as my secondary?
>
>Typically when doing big changes like this it is a good idea to have
>duplicate servers set up on both IP's to handle any latency between name
>servers that may have old info.
I agree.
As to who needs to be notified, whoever runs your secondary server(s) needs
to know, as does Internic. Other than that, everybody will figure it out
within a few days.
____________________________________________________________________
Chris Buxton Men & Mice
cbuxton@menandmice.com http://www.menandmice.com
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