NOTE: Sorry for the delay... end of year commitments are pressing... Addressing these comments in descending order.
See inline marked [tievens] On 12/13/18, 12:26 PM, "Jakob Heitz (jheitz)" <[email protected]> wrote: 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. [tievens] As in the previous response, we have no choice but to clear the list/RIB and start over upon PEER DOWN/UP in order to maintain a consist Loc-RIB (e.g we are not just a log of history events, we are maintaining the RIB that should mirror the router's RIB state). Local-RIB peer should not result in a DOWN just because one or more peers have gone down. The expected behavior is that Loc-RIB peer will send withdraws or updates based on changes, as it would for Adj-RIB-Out. 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? [tievens] A change in BGP-ID is a change in BMP peer header. This MUST require a peer DOWN and PEER UP. 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 _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
