Isis Status PagesIS-IS for IP Internets (Active WG)
Rtg Area: Alia Atlas, Alvaro Retana, Deborah Brungard | 1989-Oct-15 —Chairs:
IETF-99 isis minutes
Session 2017-07-17 1330-1530: Karlin III - Audio stream - isis chatroom
IS-IS Etherpad Scribe: Acee Lindem (email@example.com) IS-IS WG Agenda IETF-99 Time Slot (120m): Monday, July 17, 2017 13:30-15:30 CEST * Intro, Adminastriva, Document Status Presenter: Chairs (Christian Hopps, Hannes Gredler) - OpenFabric will not be presented. * Combined IGP-LS GROUP Proposal - Chris Hopps - Lots of overlapp - However, audiences are not exactly the same. - May be harder to reach consensus. - Proposal: Combine OSPF an IS-IS * Run join session in Singapore. * Combne mailing list Loa Andersson: Doesn't see it as necessarily less work. Chris Hopps: Could potentially have one draft with OSPF and IS-IS. Loa: Would be very confusing with one draft. Les Ginsberg: Could start with back-to-back sessions in one meeting. David Lamparter: Believe protocol user space is not that diverse. Chris: Believes smaller operagtors don't attend IETF. Chris Bowers: Thinks that common use case documents would be useful. Mikal Abrahamsson: Do we need effort to align features between protocols? Acee Lindem: Believes we have the features available to do anything we want in support of features. There will be different protocol mechanism enhancements. Hannes Gredler: Room poll supporting merger - about 50/50 for/against. * IS-IS TE Attributes per application Presenter: Les Ginsberg Document: https://datatracker.ietf.org/doc/draft-ginsberg-isis-te-app/ Chris Hopps: Why do you need legacy bit? Les Ginsberg: How do say not to use the new attributes? Peter Psenak: This gives you explicit advertisement for all applications. Les Ginsberg: Gives you a set of attributes for an application. Hannes Gredler: Deviation from how we have migrated IS-IS in the past? How do support old and new? Les: This is how to use attributes for new applications - not using different attributes. Bruno Decraene: How does this work with attributes used for remote-LFA? Les: You can use legacy advertisements with partial deployment or use the new attributes for full deployment. * Advertising TE protocols in IS-IS Presenter: Chris Bowers Document: https://datatracker.ietf.org/doc/draft-hegde-isis-advertising-te-protocols Raveendra Toriv: Is this multi-topology? Chris Bowers: SR and TE topologies are congruent. This is not multi-topology. Les: Hope we agree we are not modifying base SPF. Chris Bowers: Yes Harish Sitaraman: Why aren't admin groups a good long term solution? Chris Bowers: Requires configuration and prone to errors. For example, a new link where you want to advertise bandwidth. Hannes: Your draft assumes congruent topologies? Chris Bowers: Next draft addresses different attributes per application with different topologies. * Ext. to IS-IS to Assoc. TE Attr. with TE Attr. Sets and SRLGs with SRLG Sets Presenter: Chris Bowers Document: https://datatracker.ietf.org/doc/draft-bowers-isis-te-attribute-set/ * Resolve The Conflict Chris Hopps: Seems like encodings are different but the problems solved are the same. Can IS-IS TE apps draft be used as a base for consensus? Chris Bowers: Difference in requirements. Les: No way to say not to use legacy attributes. Do not have any standard bit assignments. It is local configuration so how does the controller know the mapping? Chris Bowers: Do you believe the first TE enablement draft can be adapted? Les: Not needed. Tony Przygienda: Need to agree on the set of requirements. Hannes Gredler: Can it be done using existing protocols? This could be done using multi-topology? Les: Are you suggesting we use topologies for applications? Hannes: Yes Les: We are both scoping attributes in different ways. Hannes: But why not existing multi-topology? Acee: OSPF will not use multi-topology due to lack of deployment. Tony Przygienda: Have used multi-topology for other problems. Ron Bonica: Maybe we should have an interim on use cases and requirements. Julien Meuric: Could allocate multi-topology code points for various TE flavors. * IS-IS Routing with Reverse Metric Presenter: Mikael Abrahamsson Document: https://datatracker.ietf.org/doc/draft-ietf-isis-reverse-metric Chris Hopps: If you have crappy signal on your fiber, you can advertise a high reverse metric. This will greatly discourage usage but it can be still used in the other direction. Chris: Can we go to WG last call with this document? No objections Think it is good idea? Support but not enthusiastic. * IS-IS Routing for Spine-Leaf Topology Presenter: Les Ginsberg Document: https://datatracker.ietf.org/doc/draft-shen-isis-spine-leaf-ext/ Chris Hopps: Cherry picked Russ' ideas from OpenFabric? Les: Yes, but with his permission. * ISIS Extensions for Flexible Ethernet Presenter: Mach Chen Document: https://datatracker.ietf.org/doc/draft-zcdc-isis-flexe-extention/ Julien Meuric: Discuss GMPLS extensions should be in TEAS and CCAMP. Need to clearly define usecases for Flex Etherent and GMPLS. Ended exactly on time.