[c-nsp] Faster BGP Failover

[Gert Doering]

Hi,

On Wed, Oct 12, 2011 at 10:12:45PM -0500, Ryan Wilkins wrote:
> My question is why would you not consider it?  

Failure detection is only the first step in BGP reconvergence - and if
you have two links to different ISPs, reconvergence times will be in the
order of minutes anyway, so tuning down fault detection from "30s" to "1s"
will not make failover instant anyway.

Mix "lame ISP" into the mix, like the "we spend more time on peering wars 
than on improving our network" one, and there's other approaches that will
improve reliability far more than BFD.


I wrote that a few days ago already: if you want really fast reconvergence, 
use two links to the *same* ISP, and BFD-with-BGP on that.

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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