Most of the routes will be deleted anyway.
Only the locally originated routes will remain.

I would suggest to keep the implicit withdraw behavior and not
to explicitly withdraw any loc-rib routes when they go away.
That means, the BGP speaker will send BMP loc-rib peer-down,
not withdraw any routes to BMP and resend the locally originated
routes again.

I don't believe GR activates in this case, because when the ASN or
BGP-ID changes, a NOTIFICATION will be sent. Can someone confirm?

Regards,
Jakob.

-----Original Message-----
From: Jeffrey Haas <[email protected]> 
Sent: Thursday, December 13, 2018 11:26 AM
To: Jakob Heitz (jheitz) <[email protected]>
Cc: Paolo Lucente <[email protected]>; [email protected]; 
[email protected]
Subject: Re: [GROW] BMP loc-rib Peer-Type behavior

Jakob,

On Thu, Dec 13, 2018 at 07:12:08PM +0000, Jakob Heitz (jheitz) wrote:
> Wait, a BMP server is not a BGP peer. It does not replicate a routing table.
> It is a logger/processor of information. It doesn't "delete" older 
> information,
> just because some newer information arrived.
> Its purpose it to tell you what happened at some time in the past,
> because you are trying to debug a problem or do some capacity planning
> or whatever. Just because a BGP router changed its BGP-ID does not mean
> that all the routes it had 2 days ago magically did not happen.


RFC 7854:
:    A Peer Down message implicitly withdraws all routes that were
:    associated with the peer in question.  A BMP implementation MAY omit
:    sending explicit withdraws for such routes.

-- Jeff

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