understood. So you compute ALL algorithms in all topologies then? Or just the ones which have prefix-sid with algorithm attached or something ? Is there a draft for that yet ? I only see https://tools.ietf.org/html/draft-hegdeppsenak-isis-sr-flex-algo-01
--- tony On Mon, Nov 20, 2017 at 1:40 PM, Les Ginsberg (ginsberg) <[email protected] > wrote: > Tony – > > > > My understanding is that algorithm definitions are topology independent. > This is consistent with the two algorithms defined today (standard SPF and > strict-spf). > > Using an algorithm in a particular topology would require > topology/algorithm specific SIDs and the advertisement of topology specific > link attributes (i.e., in an MT specific IS Neighbor). > > > > Les > > > > > > *From:* Isis-wg [mailto:[email protected]] *On Behalf Of *Tony > Przygienda > *Sent:* Monday, November 20, 2017 1:11 PM > *To:* Acee Lindem (acee) <[email protected]> > *Cc:* [email protected]; [email protected] > *Subject:* Re: [Isis-wg] ISIS SR Flexible Algorithm (Resending with alias > correction) > > > > So, it seems that there will be a new draft with 242 covering all > algorithms (i.e. no MT specific algo advertisement anymore). > > > > Then I thought each MT advertises which Flex it supports. Is the > assumption that you can run multiple algorithms per MT? How would you > otherwise have a two-algorithms-to-same-prefix problem? > > > > Is there some kind of conceptual model of FlexAlgo, i.e. how many of what > associated with how many of the other (MT to algo, algo to protocol > instance etc) ... > > > > -- tony > > > > On Mon, Nov 20, 2017 at 10:19 AM, Acee Lindem (acee) <[email protected]> > wrote: > > Hi Shraddha, Peter, et al, > > > > The comment on the draft I had was that the conflict case where two ISIS > routers advertise the same multi-homed prefix with a different algorithm > needs to be covered. I wouldn’t try and optimize for this and would just do > whatever is simplest but avoids loops (e.g., log the situation and prefer > the path computed with the lowest numbered algorithm). > > > > Thanks, > > Acee > > > _______________________________________________ > Isis-wg mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/isis-wg > > >
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