From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Haxby <john.haxby@oracle.com>
Subject: Why is STP turned off?
Date: Wed, 30 Apr 2008 14:50:36 +0100
Message-ID: <4818792C.9030000@oracle.com>
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I've been having trouble with bridges and I noticed that STP is=20
explicitly turned off.  This in spite of the brctl man page:

       brctl stp <bridge> <state> controls this bridge  instance=E2=80=99=
s =20
participa-
       tion in the spanning tree protocol. If <state> is "on" or "yes"=20
the STP
       will be turned on, otherwise it will be turned off.  When =20
turned  off,
       the  bridge  will not send or receive BPDUs, and will thus not=20
partici-
       pate in the spanning tree protocol.  If  your  bridge  isn=E2=80=99=
t =20
the  only
       bridge  on the LAN, or if there are loops in the LAN=E2=80=99s top=
ology,=20
DO NOT
       turn this option off. If you turn this option off, please know=20
what you
       are doing.

So, I guess someone knew what they were doing

Why did you turn STP off?

jch