Dear GROW WG, Following the feedback previously on my looking glass draft proposal, I've updated the looking glass draft ( https://datatracker.ietf.org/doc/draft-jaufeerally-bgp-lg-cap/), to move away from a capability mechanism to a new AFI which uses the MP_REACH and MP_UNREACH messages in the BGP multiprotocol specification ( https://datatracker.ietf.org/doc/html/rfc4760) to carry an administrative message. This administrative message is then defined to have a payload type that carries a URL for the looking glass (LG), as well as the ASN that is operating the LG.
The advantage of this approach is that it allows for propagating the LGs of upstream peers so leaf ASes can check prefix reachability in peers not directly connected. Looking at the development of the idea, I think it could make sense to split the document into one for the administrative message and AFI, and another for the looking glass message type within that. I will present an overview of the draft and the expected use cases during the upcoming GROW meeting at IETF111, so feel free to either comment here or ask a question in the session if you have any feedback. Thanks, Rayhaan On Tue, Apr 27, 2021 at 1:29 PM Job Snijders <j...@fastly.com> wrote: > On Mon, Apr 26, 2021 at 01:16:55AM +0200, Rayhaan Jaufeerally (IETF) wrote: > > > Consistent API that serves RIB data > > > > Initially I tried to avoid defining the exact API of the looking glass by > > pointing to https://tools.ietf.org/html/rfc8522, but unfortunately it > does > > not strictly define the response format instead leaving it up to the > > implementation what to return to queries, which IMO is not very useful > for > > automation. > > > > As y'all have pointed out there is a wealth of implementations out there > > that have tried to address this (and adding some others I've found): > > > > - Paolo's pmacct looking glass document: > > > https://github.com/pmacct/pmacct/blob/master/docs/LOOKING_GLASS_FORMAT, > > - Birdseye https://github.com/inex/birdseye > > - CAIDA looking glass API > > https://www.caida.org/tools/utilities/looking-glass-api/ > > - DE-CIX: https://www.de-cix.net/en/resources/looking-glass (which is > > using https://github.com/alice-lg/alice-lg) > > - RIPEStat's API, e.g. > > > https://stat.ripe.net/data/looking-glass/data.json?preferred_version=2.1&resource=2a0d:d740::/48 > > Just to add to the list: there is yet another API-based Looking Glass > targetting OpenBGPD: https://github.com/cjeker/bgplgd > > A demo is here: > http://165.22.27.105/bgplgd/summary > http://165.22.27.105/bgplgd/rib?as=22512 > > Kind regards, > > Job >
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