How are you configuring BFD timers?
ariev at vayner.net
Tue Mar 27 20:26:02 UTC 2018
Not directly related, but I wonder: how common is micro-BFD for detecting
bundle member failures?
On Thu, Mar 22, 2018 at 10:12 PM Måns Nilsson <mansaxel at besserwisser.org>
> --On 22 mars 2018 23:45:16 +0200 Saku Ytti <saku at ytti.fi> wrote:
> > On 22 March 2018 at 22:41, Måns Nilsson <mansaxel at besserwisser.org>
> > wrote:
> >> Subject: Re: How are you configuring BFD timers? Date: Wed, Mar 21, 2018
> >> at 04:24:47PM +0000 Quoting Job Snijders (job at instituut.net):
> >>> Silly question perhaps, but why would you do BFD on dark fiber?
> >> Because Ethernet lacks the PRDI that real WAN protocols have.
> > Indeed, RFI on ethernet is rather modern addition, turning 20 this year.
> (You just reminded me I've been doing some sort of WAN network ops for
> about 20 years.)
> That does indeed solve the problem for dark fibre, and those lucky WDM
> systems that actually reflect input status to output. Not always true, I'm
> afraid (just look at the Ethernet switch mid-span that Thomas Bellman wrote
> about; a fitting metaphor for all "ethernet-over-other.." models..).
> Ethernet still regards "no frames seen on the yellow coax" as an
> opportunity to send traffic rather than an error, if we're talking old
> things ;-). BFD solves that, and it is worthwhile to have one setup
> regardless of technology, if possible.
> Måns Nilsson primary/secondary/besserwisser/machina
> MN-1334-RIPE SA0XLR +46 705 989668
> CHUBBY CHECKER just had a CHICKEN SANDWICH in downtown DULUTH!
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