[122087] in North American Network Operators' Group
BFD over p2p transport links
daemon@ATHENA.MIT.EDU (Serge Vautour)
Fri Feb 5 09:48:16 2010
Date: Fri, 5 Feb 2010 06:45:50 -0800 (PST)
From: Serge Vautour <sergevautour@yahoo.ca>
To: nanog@nanog.org
Reply-To: Serge Vautour <serge@nbnet.nb.ca>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hello,
I'm being asked to look into using BFD over our P2P transport links. Is anyone else doing this? Our transport links are all 10G Ethernet (LAN-PHY). There's no alarming inside of LAN-PHY like there is in SONET. The transport side should propagate a fiber break by stopping to send light on both ends. This is enough to cause the router interfaces to drop and for protocols to converge.
Since LAN-PHY doesn't have any built end-end alarming, some folks believe that we may encounter situations where a fiber break doesn't cause interfaces do go down. Convergence would then have to wait for IGP hellos to detect the problem.
Is anybody else running BFD over 10G LAN-PHY transport links? Any comments around BFD for this application in general?
Thanks,
Serge
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