[j-nsp] Soft removal of traffic from AE?

[Saku Ytti]

On 29 October 2016 at 02:54,  <adamv0025 at netconsultings.com> wrote:
> Saku is right there in saying that LACP should have provisions for hitless
> addition and removal of links from bundle. (not quite sure about removal
> though, but I'll play along).
> But my experience is that's not how it works unfortunately.
>
> Let's talk about removal first.
> This process is governed by link failure detection and that can be done in
> many ways, fastest is the physical layer LAN/WAN/OTN-PHY alarms -that will
> kick in well before the micro-BFD or CFM on each bundle member link notices
> a failure.

Question was not about outage, but operator removing link from an
bundle. LACP can signal this and do it gracefully without losing
single packet, which for stated reason unfortunately does not mean
that end user will experience it as lossless.

>From 802.1AX-2014 relevant section to start from is '6.3.14 Detaching
a link from an Aggregator'

If actual implementation does it gracefully or not, I cannot answer,
but protocol does not prohibit it.

-- 
  ++ytti