So, you're looking to lower it from 500ms down to 50ms when most of
the recomendations are a bottom limit of 150ms?
On Tue, Apr 27, 2021 at 02:37:52AM +0000, Frank Bulk wrote:
>So can we change the route reflectors to use 50 msec?
>
>Frank
>
>From: MICE Discuss <[log in to unmask]> On Behalf Of Ben Wiechman
>Sent: Wednesday, April 21, 2021 8:47 PM
>To: [log in to unmask]
>Subject: Re: [MICE-DISCUSS] Zayo Belle Plaine - April 15th
>
>IOS-XR bottoms out at 15ms. IOS/XE has typically been 150ms.
>
>Agreed that in general unless you have <50ms failover requirements 150ms+ is probably a good compromise.
>
>Ben Wiechman
>Director of IP Strategy and Engineering
>Direct: 320.256.0184
>Cell: 320.247.3224
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>150 Second Street SW | Perham, MN 56573 | arvig.com
>
>On Wed, Apr 21, 2021, 17:57 Andrew Hoyos <[log in to unmask]> wrote:
>On Apr 21, 2021, at 5:52 PM, David Farmer <[log in to unmask]> wrote:
>
>On Wed, Apr 21, 2021 at 5:36 PM Richard Laager <[log in to unmask]> wrote:
>On 4/21/21 3:04 PM, Frank Bulk wrote:
>> And to follow up on my previous question, is Arista falling bit short in
>> our situation, by not supporting a receive interval of 10 msec?
>
>I've had a couple vendors suggest not to make it that short. Brocade,
>for example, suggested 150 ms as a minimum. Arista was more vague, but
>from your error message, apparently their implementation doesn't even
>try to do less than 50 ms.
>
>Maybe think about this from another perspective, 10 ms is 100 times a second, 50 ms is 20 times a second, and 150 ms just over 6 times a second. I think 10 ms is probably being a little impatient.
>
>Not the mention, the added CPU load on both ends dealing with said BFD packets 100x/sec.
>
>We’ve generally seen 50-250ms used in practice. 10ms does seem super aggressive. We use 250ms x 3 here for backbone links and peers/transit that support BFD, and 750ms x 3 facing internal gear.
>
>
>—
>Andrew Hoyos
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>
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