<font size=2 face="sans-serif">I'm sorry to be a kvetch, but it seems
to me that a simple outage notification on the "Outages" list
has turned into a colloquium on SONET failure modes. If I should
be in a different venue please flame away, but the SNR here for "Outages"
lately is sometimes as bad as NANOG.</font>
<br>
<br><font size=2 face="sans-serif">Ken Guy<br>
Network Architect<br>
AM Best Company</font>
<br>
<br>
<br>
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<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">"George Bonser" <gbonser@seven.com></font>
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<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif"><frnkblk@iname.com>, "Owen
DeLong" <owen@delong.com></font>
<tr>
<td valign=top><font size=1 color=#5f5f5f face="sans-serif">Cc:</font>
<td><font size=1 face="sans-serif">outages@outages.org</font>
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<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">03/05/2011 04:52 PM</font>
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<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [outages] Major Fiber Cut in Miami</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Sent by:</font>
<td><font size=1 face="sans-serif">outages-bounces@outages.org</font></table>
<br>
<hr noshade>
<br>
<br>
<br><tt><font size=2><br>
<br>
> On Behalf Of Frank Bulk<br>
> Sent: Saturday, March 05, 2011 1:27 PM<br>
> To: 'Owen DeLong'<br>
> Cc: outages@outages.org<br>
> Subject: Re: [outages] Major Fiber Cut in Miami<br>
> <br>
> While you're technically correct, it's not how it's commonly<br>
> implemented.<br>
> Well, maybe it's more common than I was aware. =) It's not how<br>
> regional and<br>
> state fiber networks in our neck of the woods do it.<br>
> <br>
> Frank<br>
<br>
Concur. If a customer buys a "ring" they expect a ring.
Protection is<br>
implied. If they buy a point-to-point, that is a different story.
A<br>
protected point-to-point might be provisioned on a ring or it might be<br>
provisioned with two separate point-to-point circuits.<br>
<br>
A "SONET ring failure" would require two faults. That said,
I have seen<br>
cases where both sides of the ring enter a building by the same trench<br>
allowing one case of backhoe fade to take out the entire building. <br>
<br>
<br>
_______________________________________________<br>
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Outages@outages.org<br>
</font></tt><a href=https://puck.nether.net/mailman/listinfo/outages><tt><font size=2>https://puck.nether.net/mailman/listinfo/outages</font></tt></a><tt><font size=2><br>
<br>
</font></tt>
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