speculating on cause and effect, my first bet would that someone turned off spanning tree on a trunk or trunks immediately prior to the flood. my next bet would be a babbling device - i've seen an unauthorized hub on a flat layer 2 net basically shut the network down. it was after a power hit. when we found the buggar and power cycled it, all was well. i don't think that the researcher was the culprit. more likely the victim. thoughts? ----- Original Message ----- From: "Scott Granados" <scott@wworks.net> To: "Huff, Mark" <mhuff@integratelecom.com>; "Nanog (E-mail)" <nanog@merit.edu> Sent: Wednesday, November 27, 2002 12:54 PM Subject: Re: Spanning tree melt down ?
Oh wow I worked for a company who integrated some fairly large network
based
imaging systems in there and things were broken then too.
Their techs kept cutting fibers and disconnecting nodes and it took days for them to figure out why.
----- Original Message ----- From: "Huff, Mark" <mhuff@integratelecom.com> To: "Nanog (E-mail)" <nanog@merit.edu> Sent: Wednesday, November 27, 2002 8:19 AM Subject: Spanning tree melt down ?
Cisco wins...
As a result of the crash, Beth Israel Deaconess plans to spend $3 million to replace its entire network - creating an entire parallel set of wires and switches, double the capacity the medical center thought it needed.