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Re: [Idr] WG Adoption call draft-ymbk-idr-bgp-open-policy - (6/6 to 6/20/2016)

"Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov> Tue, 07 June 2016 23:17 UTC

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From: "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
To: "Osborne, Eric" <eric.osborne@level3.com>, Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] WG Adoption call draft-ymbk-idr-bgp-open-policy - (6/6 to 6/20/2016)
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Cc: "draft-ietf-idr-route-leak-detection-mitigation@ietf.org" <draft-ietf-idr-route-leak-detection-mitigation@ietf.org>, "'John G. Scudder'" <jgs@bgp.nu>
Subject: Re: [Idr] WG Adoption call draft-ymbk-idr-bgp-open-policy - (6/6 to 6/20/2016)
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Eric,



>4) I just briefly skimmed detection-mitigation, and that seems like a

>much more heavyweight way to implement the same sort of end behavior.



On what basis?

The OTC flag (one for the whole update) in the bgp-open-policy draft

has in essence the same semantics as the RLP flag (one per AS-hop).

In both cases, by setting the flag the sender is indicating that

the route is being sent to a customer or a lateral peer, and hence

SHOULD NOT be sent by the receiving AS or another AS down the path

to its provider or lateral peer.

So hard to say that one proposal is more heavy weight

than the other in principle.



Also, please see the point made in my other post about the inefficacy

of a single OTC flag for the whole update (as proposed in bgp-open-policy):

http://www.ietf.org/mail-archive/web/idr/current/msg15745.html

You may also see a detailed discussion in Section 5.5 of

https://tools.ietf.org/html/draft-ietf-idr-route-leak-detection-mitigation-03



Sriram

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