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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Just got on this thing (perhaps very belatedly) - root server trouble?
-----BEGIN PGP SIGNED MESSAGE----- On Tue, 18 Feb 1997 13:01:06 -0600 (CST), [email protected] writes: > >In fact, our solution has you *SECONDARYING* ".", which means that in >general, other than the requirement for you to be able to reach a source for >that file on a every-few-days basis (to check the SOA record) you no longer >NEED connectivity to the root domain. > >This is demonstrably superior; you no longer need to make that query for >".", as you already know who is authoritative for all the TLDs under ".". Yiiii... Having everyone secondary "." sounds demonstrably inferior to me. Just think what would happen if every nameserver that is authoritative for a .com domain started secondarying ".". There are approximately 50,000 name servers that are authoritative for .com (according to the .com zone file from the InterNIC). That would mean that the system ROOT-NS.MCS.NET would waste around 5 queries per second because those 50,000 name servers would be trying to check the SOA (at the time that I write this, the eDNS servers list a 3 *hour* refresh interval for the root zone with a 15 *minute* retry interval). Just think what will happen to poor ROOT-NS.MCS.NET when the serial number changes! With system currently in use, those 50,000 name servers would generate around 6 queries per second as those name servers refresh their list of root name servers - and those queries would be distributed fairly evenly among all of the root servers. And to top it all off, there are probably at least 2-3 times as many name servers that are not authoritative for a .com domain. Boy, that ROOT-NS.MCS.NET must be one huge piece of iron... Hmmm... under your scheme, every name server would have authoritative information for the root zone. So, really, the other eDNS root servers are pointless, since they will never be contacted. That leaves ROOT-NS.MCS.NET as a *single point of failure*. Plus, think of the hassles when it's decided that the IP address of ROOT-NS.MCS.NET needs to change. [A copy of the headers and the PGP signature follow.] Date: Tue, 18 Feb 1997 15:09:08 -0600 From: "Jeffrey C. Ollie" <[email protected]> In-reply-to: Your message of "Tue, 18 Feb 1997 13:01:06 CST." <[email protected]> Subject: Re: Just got on this thing (perhaps very belatedly) - root server trouble? To: [email protected] -----BEGIN PGP SIGNATURE----- Version: 2.6.2 Comment: AnySign 1.4 - A Python tool for PGP signing e-mail and news. iQCVAwUBMwoafJwkOQz8sbZFAQELTwQAvwU0Ikj7s1kwUU6gqutWjsAOQQZy9WbU qI/Xlyjh9S0ZGqf9RA/q9OaJkXjy2vweQ+y3JLbyrw5EL3Cbk302YmVEOX4CbUJF nkfWNWrwK8mTvRuPamnB75YIHemEET8wxPueChxRY+7u7SRldTqLdeRaFfJuIFzL noNEfUH7l5A= =Q/l5 -----END PGP SIGNATURE----- -- Jeffrey C. Ollie | Should Work Now (TM) Python Hacker, Mac Lover | - - - - - - - - - - - - - - - - -
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