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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">No routing at all<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The meltdown is almost certainly the result of 6 Fastirons, 2 turboIrons running a combination of IEEE, 802.1w and No spanning tree at all. Ive diagrammed this
now for each vlan, and I have found some serious deisgn issues. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><br>
MGT wanted me to figure out what happened, All I can think about is how to fix this – i.e 801.w everywhere, on all vlans – It seems that this runs as a per-vlan spanning tree flavor?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">NickC<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Nick Hilliard [mailto:nick@foobar.org]
<br>
<b>Sent:</b> Wednesday, May 18, 2016 10:28 AM<br>
<b>To:</b> Eldon Koyle<br>
<b>Cc:</b> Nick Cutting; foundry-nsp<br>
<b>Subject:</b> Re: [f-nsp] Spanning tree on brocade<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Eldon Koyle wrote:<br>
> That is _really_ old code on the turboiron. It may be the version they<br>
> shipped with, which was extremely buggy. You are correct that it is<br>
> routing code (TIR is routing, TIS is switching). Are you doing any<br>
> routing on that device?<br>
<br>
old and buggy, but stp on 4.02.00c was fine. If there was an STP<br>
meltdown, it's more likely to have been the result of a network misconfig.<br>
<br>
7.3.00f was the next usable version of the tix code after 4.02.00c.<br>
Upgrading would be a really good idea, not least due to the unicast<br>
flooding problem in all versions of the turboiron code before 7.3<br>
(DEFECT000362191).<br>
<br>
Nick<br>
<br>
<o:p></o:p></p>
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