Re: Spanning tree melt down ?

["Garrett Allen" <garrett.allen () erols com>]

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.