[c-nsp] spanning-tree for local switching on ASR920

[adamv0025 at netconsultings.com]

Hi,

> From: Gert Doering [mailto:gert at greenie.muc.de]
> Sent: Thursday, October 19, 2017 10:15 AM
> 
> Hi,
> On Thu, Oct 19, 2017 at 09:45:08AM +0100, adamv0025 at netconsultings.com
> wrote:
> > Hmm and if you enable debug can you actually see the stp packets being
> > issued (or even received) on either of the ports?
> > The config looks good for catching and processing such PDUs.
> It's not sending PDUs, so the receiving end has nothing to work with.
> If I connect both links to a switch that has STP active, and change the
l2proto
> to "l2proto forward stp", the *switch* will stp-disable one link, but the
> ASR920 never does anything with it (except eat the STP packets if "l2proto
> peer stp" is set).
I guess that answers your question regarding STP support on this thing.
Anyways running STP on a PE, as others have already indicated, is a big faux
pas in the Carrier-Ethernet/MEF world. 
So I'd suggest the CE/MEF-friendly split-horizons :) 

adam