nanog mailing list archives
Re: UUNET is not the Internet (and neither is AOL)
From: Dave Israel <davei () algx net>
Date: Mon, 7 Oct 2002 14:55:14 -0400
On 10/5/2002 at 12:30:36 +0000, Tim Thorne said:
After reading all the stories about what supposedly happened does anyone know what really happened? Did UUNet US really do an IOS upgrade on a sizable proportion of their border routers in one go? This seems like suicide to me. What possible reason could there be for a network-wide roll out of an untested IOS apart from being in the mire already?
The assumption that it was untested is probably an unfair one. Once a network reaches a certain size, it is very difficult to simulate it in a lab. Number of routes/updates, variety of packet destinations, different card revisions and layouts... heck, even statistically, you have problems. An issue that appears 5% of the time will only show up in a a 10-router test lab half the time, but in a 400-router network it'll pop up on about 20 routers and wreck your whole day. And when you're out of cash, you can't really afford to devote lots of hardware to a lab. I'm not saying that their testing procedures were correct, or that they tested the image as well as they could have... but the assumption that, if it blew up in the field it must not have been tested at all probably isn't accurate. -Dave
Current thread:
- Re: UUNET Routing issues, (continued)
- Re: UUNET Routing issues Iljitsch van Beijnum (Oct 04)
- UUNET is not the Internet (and neither is AOL) Sean Donelan (Oct 04)
- Re: UUNET is not the Internet (and neither is AOL) Tim Thorne (Oct 05)
- Re: UUNET is not the Internet (and neither is AOL) Sean Donelan (Oct 05)
- Message not available
- Re: UUNET is not the Internet (and neither is AOL) Vicky O. Mair (Oct 06)
- Re: UUNET is not the Internet (and neither is AOL) alex (Oct 07)
- Re: UUNET is not the Internet (and neither is AOL) Sean Donelan (Oct 07)
- RE: UUNET is not the Internet (and neither is AOL) Cleve Mickles (Oct 07)
- Re: UUNET is not the Internet (and neither is AOL) Jared Mauch (Oct 07)
- RE: UUNET is not the Internet (and neither is AOL) Ryan Fox (Oct 07)
- Re: UUNET is not the Internet (and neither is AOL) Dave Israel (Oct 07)
- Re: UUNET is not the Internet (and neither is AOL) Petri Helenius (Oct 07)
- Re: UUNET Routing issues Petri Helenius (Oct 04)
- Re: UUNET Routing issues Valdis . Kletnieks (Oct 04)
- Re: UUNET Routing issues Petri Helenius (Oct 04)
- Re: UUNET Routing issues Iljitsch van Beijnum (Oct 04)
- Re: UUNET Routing issues Rafi Sadowsky (Oct 05)
- Re: UUNET Routing issues Iljitsch van Beijnum (Oct 05)
- Re: UUNET Routing issues Marshall Eubanks (Oct 05)
- Re: UUNET Routing issues Petri Helenius (Oct 05)
- Re: UUNET Routing issues Stephen Sprunk (Oct 03)