[04:10:07] ~dhruv~dhody~ has set the subject to: IETF-109
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[04:54:33] <~dhruv~dhody~> If anyone would like to check audio, please do so now!
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[04:56:30] <Meetecho> Hi all, please notice that the jabber room seems disconnected for Meetecho users, investigating
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[04:59:08] <Meetecho> Fixed, reloading the page will fix the chat for Meetecho users
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[05:00:35] <Andrew Stone> test
[05:00:40] <Andrew Stone> seems to be working now
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[05:01:35] <Jeff Tantsura> We wish...
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[05:02:00] <~dhruv~dhody~> https://codimd.ietf.org/notes-ietf-109-pce?both
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[05:02:32] <~dhruv~dhody~> hari can you confirm?
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[05:21:25] <jme> https://datatracker.ietf.org/doc/draft-ietf-pce-local-protection-enforcement/ Dully noted Andrew. :-)
[05:21:40] <Andrew Stone> yep just double checked too, thx! and thx wg for adoption
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[05:23:03] <Dhruv Dhody (Jabber)> Sorry about that
[05:23:44] <Andrew Stone> no worries :) i find the data tracker shows something funny when it went from 'path' to 'local' in local-00 so understandable
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[05:28:40] <Jeff Tantsura> o  BT = 0: The binding value is an MPLS label carried in the format
      specified in [RFC5462] where only the label value is valid, and
      other fields fields MUST be considered invalid.  The Length MUST
      be set to 7.
   o  BT = 1: Similar to the case where BT is 0 except that all the
      fields on the MPLS label entry are set on transmission.  However,
      the receiver MAY choose to override TC, S, and TTL values
      according its local policy.  The Length MUST be set to 8.
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[05:30:52] <Jeff Tantsura> 20 vs 32 @huaimo - does this clarify?
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[05:45:21] <Jeff Tantsura> +1 jie
[05:45:31] <Ketan Talaulikar> @Jie - you are correct it might cause issues in some designs to mix algos but may be ok in other cases. E.g. can use FA in one domain but base algo in another
[05:46:17] <Ketan Talaulikar> Perhaps the authors can add some information, but it would not be right to normatively prohibit it IMHO
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[05:48:24] <Jeff Tantsura> This will open a way to create catastrophic scenarios when new algo’s  are added
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[05:54:22] <Ketan Talaulikar> @Jeff - practically I won't recommend anyone combine SIDs of different algos in a domain. However, we do get use-cases where different Algos are used in different domains and I believe that is safe to do. Would you agree?
[05:55:05] <Jeff Tantsura> Different is the key
[05:55:30] <Tarek Saad> @Ketan, I would not think it is issue to use different algo (per domain) for e2e path - e.g. for IGP isolated domains
[05:55:39] <Andrew Stone> intermixing different flex algos within the same ERO gives another tool in the toolbox for label stack reduction
[05:55:53] <Andrew Stone> **same ERO path
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[05:56:29] <Tarek Saad> @ketan: within the same domain, I'd be concerned about loops if you mix algos - but PCE can make sure path is loopless
[05:56:31] <Ketan Talaulikar> So I believe we are all on the same page :-) - perhaps the authors should add text to clarify?
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[06:05:32] <Jie Dong> @Ketan agree that some text to clarify the usage and limitations of different flex-algos would be helpful
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[06:14:30] <Jeff Tantsura> and so we go from removing state to adding state and back :)
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[06:16:07] <jme> Human beings love looping. ;-)
[06:16:30] <Vishnu Beeram> state never went away.. it just got moved around..
[06:16:42] <Jeff Tantsura> Rfc1925 :)
[06:16:44] <Andrew Stone> could consider it a middle ground. Depending on the topology, state would only exist on those transit nodes that actually branch in the multicast tree
[06:16:49] <Ketan Talaulikar> Isn't is quite normal/wide-spread that the C node (replicating node) is also acting as headend for some other services behind it?
[06:17:30] <Jeff Tantsura> Or we redistribute PCEP into IGP and flood, how’s that? :)
[06:18:07] <Ketan Talaulikar> So the C-node is also a PCC already and this draft is just re-using that existing channel ?
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[06:19:07] <Jeff Tantsura> Since you don’t know in advance who’s going to replicate, you end up with full mesh
[06:19:38] <Jeff Tantsura> PCE-&gt;PCC
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[06:23:29] <Andrew Stone> for dynamic/automic BSID usage to aid in label stack reduction you end up in a similar issue
[06:24:06] <Jeff Tantsura> Yes, exactly
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[06:24:19] <Andrew Stone> replication segment ->> fancy BSID with multi egress :)
[06:24:28] <Jeff Tantsura> RR :)
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[06:28:53] <Mike Koldychev> Point taken about Flex-Algo combination within one domain. If anyone has a counterexample of where this can lead to problems, please share it on the mailing list.
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[06:29:14] <Dhruv Dhody (Jabber)> Just me?
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[06:29:45] <Ketan Talaulikar> stopped sharing Dhruv ?
[06:29:45] <Boris Khasanov> No screen sharing
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[06:30:16] <Dhruv Dhody (Jabber)> Crashed for me
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[06:30:32] <Meetecho> Dhruv Dhody: checking
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[06:31:05] <jme> S... happens. We're back on track now.
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