nanog mailing list archives
Re: Weird DNS issues for domains
From: Mark Andrews <Mark_Andrews () isc org>
Date: Fri, 30 Sep 2005 09:51:44 +1000 (EST)
In article <A310E761-5459-440B-BA92-E160A45550AB () crocker com> you write:
I just tested it from a Verizon DSL host and it worked. You might want to consider reading RFC 2182 though, particularly the part about geographically diverse nameservers.Yeah, yeah, that is overrated. If my site goes dark and my DNS goes down it doesn't really matter as the bandwidth and the web server will also be down. Having a live DNS server in another part of the country won't help if the access routers handling the traffic for the T1 to the school is also down. Geographically diverse name servers sounds great in theory but for this application it won't gain any redundancy.
People say this but then they don't see the impact of not having DNS servers available. The DNS was designed with the idea that atleast one of the nameservers for a zone would always be reachable. A zone that is unreachable results in the caching servers using up resouces at 1000 times the normal rate. Milli-seconds to tens of seconds. Mark
Current thread:
- Re: Weird DNS issues for domains, (continued)
- Re: Weird DNS issues for domains Randy Bush (Sep 29)
- Re: Weird DNS issues for domains Todd Vierling (Sep 29)
- Re: Weird DNS issues for domains Crist Clark (Sep 29)
- Re: Weird DNS issues for domains Peter (Sep 30)
- Re: Weird DNS issues for domains Crist Clark (Sep 30)
- Re: Weird DNS issues for domains John Dupuy (Sep 29)
- Re: Weird DNS issues for domains Randy Bush (Sep 29)
- Re: Weird DNS issues for domains Todd Vierling (Sep 29)
- Re: Weird DNS issues for domains Bjørn Mork (Sep 29)
- Re: Weird DNS issues for domains Robert E . Seastrom (Sep 29)
- Re: Weird DNS issues for domains Mark Andrews (Sep 29)
- Re: off-list Re: Weird DNS issues for domains Edward Lewis (Sep 29)
- Re: Weird DNS issues for domains Simon Waters (Sep 30)