Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt
Robert Raszuk <robert@raszuk.net> Tue, 14 March 2017 20:45 UTC
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From: Robert Raszuk <robert@raszuk.net>
Date: Tue, 14 Mar 2017 21:45:28 +0100
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To: Jeffrey Haas <jhaas@pfrc.org>
Cc: Nick Hilliard <nick@foobar.org>, idr wg <idr@ietf.org>
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt
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Hi Jeff, > I said RS does not need to bothered with that information. > > The relevant bit of procedure within this document to run BFD toward an > eBGP > nexthop and use it in the local decision process is of potential value even > without the RS SAFI part of the protocol. So, in this respect, I agree. > Completely agree ! In fact to me this is basic 4271 as you should not use a path (even single path) if you can not validate if the next hop to it is reachable. I think we all in BGP did not pay that much attention to reachability on multiaccess LANs as most peering happens on p2p links where the same problem does not happen. > The authors had previously discussed extracting this procedure from the > document and are fine with doing so if it makes sense. > Makes sense. It should be done by default one way or another. /* Not sure if BFD considering those "weak customer peering routers" is the best idea. */ The one "common" use case where this may be of benefit outside of a > route-server environment is BGP "VPNs" that are constructed using IPSEC > tunnels with the network effectively an NBMA subnet. > See all SD-WANs today need more then one path such that they make forwarding decision by probing all alternative overlay links and based on the applied logic switch over to better or lower cost or less delay path. If you give them just single path this is all no longer possible. That is what worries me in this the most if you would like to utlize this new NH NOTIFCATION SAFI for WAN VPNs. Thx, R.
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt i3D.net - Martijn Schmidt
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Mikael Abrahamsson
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt internet-drafts
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Randy Bush
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Randy Bush
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Randy Bush
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Randy Bush
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Niels Bakker
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Job Snijders
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Job Snijders
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Job Snijders
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Job Snijders
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Nick Hilliard
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Robert Raszuk
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Jeffrey Haas
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Gert Doering
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt John G. Scudder
- Re: [Idr] I-D Action: draft-ietf-idr-rs-bfd-02.txt Rajiv Asati (rajiva)