Hi Dongjie, please see inline:
On 19/04/18 09:10 , Dongjie (Jimmy) wrote:
Hi, Here are some comments on the Flex Algo drafts. SR algorithm as defined in draft-ietf-isis-segment-routing-extensions is about the algorithm used for path calculation, such as SPF, strict SPF, etc. In the Flex Algo drafts, the definition of algorithm is extended to include topological constraints and the metric type used in calculation, which makes its functionality analogous to multi-topology routing (MTR).
not really. MTR is defined on a per link basis and each MTR participation needs to be advertised on a per link basis. There is no such concept in flex-algo draft. Flex-algo works on top of existing IGP topologies.
Section 4.1 of the Flex Algo drafts says "Flex-Algorithm definition is topology independent", while in some places Flex Algo is described as a "light weight alternative" to MTR.
there is no mention of MTR in the document.
It would be necessary if the relationship between Flex-Algo and MTR can be further clarified. Whether the two mechanisms are complementary to each other, or Flex-Algo will be used to replace MTR?
they are orthogonal. thanks, Peter
And if it is claimed that Flex-Algo is light weight than MTR, it would be helpful to give a thorough comparison of the two mechanisms somewhere. Best regards, Jie *From:*Lsr [mailto:lsr-boun...@ietf.org] *On Behalf Of *Acee Lindem (acee) *Sent:* Tuesday, April 17, 2018 10:44 PM *To:* lsr@ietf.org *Subject:* [Lsr] LSR Working Group Adoption Poll for Flex Algorithm Drafts This begins a two-week adoption poll for the following Flex Algorithm drafts: https://datatracker.ietf.org/doc/draft-hegdeppsenak-isis-sr-flex-algo/ https://datatracker.ietf.org/doc/draft-ppsenak-ospf-sr-flex-algo/ The adoption poll will end at 12:00 AM EST on May 2^nd , 2018. Please indicate your support of opposition of the drafts. Additionally, the authors are amenable to combining the drafts into a single draft. If you have an opinion, please state that as well. Thanks, Acee _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
_______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr
