On Sun, Oct 30, 2016 at 05:10:01PM +0100, Job Snijders wrote:
> Brian, Sriram, others,
> 
> I'd like to propose a different strategy and describe some background.
> Both of you mention per-peer flags or new per-route state flags, which
> in essence are updates to rfc4271, this feels like too heavy of a
> hammer.
> 
> I'd prefer to make the document compatible with existing deployments of
> software which is already compliant with the spirit of this document.
> 
> OLD:
>     Software MUST mark any routes from an EBGP peer as 'invalid' in the
>     Adj-RIB-In, if no import policy was configured.
> 
> NEW:
>     Software MUST consider any routes from an EBGP peer as invalid, if
>     no import policy was configured.
> 
> NEW2:
>     "Software MUST discard any routes from an EBGP peer, if no import
>     policy was configured."

I rather object to NEW2 and, if included, withdraw any support of this
draft.

A fundamental issue with this behavior is that it dumps routes that would
have to be recovered via expensive refresh.

If any implementation wants to do this, I don't object, but it shouldn't be
mandatory.

FWIW, I still haven't evaluated our own software under the prior version of
the draft, but think it's a generally good idea.

-- Jeff

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