I'd concur. There was a well publicized event last year where 4 of the 13 servers went offline, due to human error, and there was no interruption in service.
-------------------------------------------------------------- Roger D. Seielstad - MTS MCSE MS-MVP Sr. Systems Administrator Inovis Inc. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Wednesday, May 12, 2004 12:24 PM > To: Exchange Discussions > Subject: RE: DNS > > On Wed, 12 May 2004, at 9:46am, [EMAIL PROTECTED] wrote: > > I'm not so sure the root operators would appreciate that > same sentiment. > > The NOC in Langley, VA stays at about 95% ALL-OF-THE-TIME. > > Most of the root servers get capacity added easily to > handle additional > load. I know <a.root-servers.net> has a disproportionately > higher load, > because Microsoft's DNS resolver is stupid and always queries > the first > listed root, rather then doing round-robin or a response-time > hueristic. > > Not saying that one should deliberately bypass the DNS > cache hierarchy, > just that I don't think it is that bad. > > I am curious about the 95% figure. 95% of what? > Bandwidth? CPU cycles? > RAM? Can you give a reference? > > > It is pretty scary how fragile the DNS system really is. > > The DNS has actually proven to be very robust. People have > tried to take > out the root servers before, using a massive DDoS attack, and > they failed. > The DNS has weathered the worst Internet attacks that anyone > has been able > to come up with so far. Of course, this is not to say a > successful attack > could not be engineered, but so far, nobody has been able to > execute one. > > > Take out the root servers and most other big ISP DNS > servers will timeout > > their cache within 72 hours. It will be interesting to see > how much of > > the Internet is *findable* after that.... > > The TTL on the root zone is 48 hours, so if all the roots > go out, you're > basically looking at a maximum of two days before the whole > DNS goes *poof* > and disappears. No DNS means no Internet, for all intents > and purposes. > > -- > Ben Scott <[EMAIL PROTECTED]> > | The opinions expressed in this message are those of the > author and do | > | not represent the views or policy of any other person or > organization. | > | All information is provided without warranty of any kind. > | > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&t ext_mode=&lang=english > To unsubscribe send a blank email to > %%email.unsub%% > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with.
