Re: [Idr] WG Adoption call for draft-wang-idr-rd-orf-05.txt (2/4/2021 to 2/18/2021)

Robert Raszuk <> Thu, 11 February 2021 15:40 UTC

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From: Robert Raszuk <>
Date: Thu, 11 Feb 2021 16:40:28 +0100
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To: Aijun Wang <>
Cc: "Jakob Heitz (jheitz)" <>, Susan Hares <>, "idr@ietf. org" <>, "Acee Lindem (acee)" <>
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Subject: Re: [Idr] WG Adoption call for draft-wang-idr-rd-orf-05.txt (2/4/2021 to 2/18/2021)
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> Now if all of the above is not done or done with mistakes and you indeed
> experience to many routes to be handled by data plane you stop locally
> importing those routes to local VRFs by VRF shutdown. The good thing here
> is that this will be noticed by all attached customers as their dynamic
> routing will propagate withdraws.
> [WAJ] The BGP session is shared by several VPNs and cannot be shutdown in
> such situations. Procedures that you expect would not happen.

Where did I say to shutdown BGP session ?

I said VRF shutdown ... nothing to do with BGP sessions shutdown.

- - -

Let me provide the analogy here ...

You are presenting a solution on what to do when we fly low and start
hitting the top of the trees.

WG tells you that flying low is bad practice and should not take place
providing what to do to mitigate it well - in the analogy train your ground
crew not to overload the plane.

You say - Oh well we have different idea instead - when we throw away
during the flight some passengers we can keep flying (on the edge of

That's here we are with this.

- - -

Quite honestly when we started to deploy 2547 back in nearly 2000s we were
preparing much more user friendly solution (a flavor of CSC - not CSC as
defined in the RFC) where SP network would only deal with next hops and
never with customer routes ... yet customer would have the same type of
service. Quite honestly we have had even OSPF reflector ready for it.
Problem was that at that time SPs said oh we want to take millions of
customer routes - no problem. We just buy bigger RRs and bigger routers. So
you can guess what happened with such idea - got shelved as if deployed
would result in revenue loss :).