I'm not sure it's used by a large proportion of operators, but it is deployed in some volume in a number of networks that I'm aware of. During the development of implementations, we hosted inter-op testing/fixing at a previous employer. Rolling it out had started when I moved on, but I expect it is now across their global deployments at this point. I haven't heard anything to say that it's causing any issues. [I still am somewhat unable to reconcile myself with the use of BFD in this deployment, some Ethernet OAM - seemed a reasonable per-member solution to me, but folks have a preference for a single protocol here.] r. On Wed, 28 Mar 2018 at 10:15 Arie Vayner <ariev@vayner.net> wrote:
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@besserwisser.org> wrote:
--On 22 mars 2018 23:45:16 +0200 Saku Ytti <saku@ytti.fi> wrote:
On 22 March 2018 at 22:41, Måns Nilsson <mansaxel@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@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!