Hi Peng shaofu, As per the draft, if automatic metric calculation with reference bandwidth method is used to calculate the metric Then as per your example s->D path will be chosen since metric is 10. Lets say operator wants to choose S->X1->X2--->X10->D path then operator can manually assign higher bandwidth Metric on S->D link which will ensure S->D path is not the least cost path.
Rgds Shraddha Juniper Business Use Only From: [email protected] <[email protected]> Sent: Thursday, May 13, 2021 1:05 PM To: [email protected] Cc: [email protected]; [email protected]; [email protected] Subject: Re:[Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02 [External Email. Be cautious of content] Sorry for spelling mistakens in the previous email. updated text: Hi WG, I have a little doubt about the scheme described in this document. See the following example: S ---- X1 ----- X2 ---- ... ... ----- X10 ----- D \----------------------------------------------/ Suppose the links in S---X1---X2...---D have the same bandwidth 10G, and the link S-D has bandwidth 1G. Suppose that we select "reference bandwidth = 100G", then, each link in S---X1---X2...---D will have the same bandwidth-metric 10 (i.e., 100/10) link S-D will have a bandwidth-metric 100 (i.e., 100/1) So flex-algo path from S to D based on bandwidth-metric will be S-D, not S---X1---X2...---D, because the later has a large cumulative bandwitdh-metric (i.e., 11*10). But our expect path should not be S-D, but S---X1---X2...---D, as it has large bandwidth. Do I misunderstand anything ? Regards, PSF 发件人：AceeLindem(acee) 收件人：[email protected]<mailto:[email protected]>; 抄送人：[email protected]<mailto:[email protected]>; 日 期 ：2021年05月13日 05:49 主 题 ：[Lsr] LSR WG Adoption Poll for "Flexible Algorithms: Bandwidth, Delay, Metrics and Constraints" - draft-hegde-lsr-flex-algo-bw-con-02 _______________________________________________ Lsr mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/lsr Esteemed Members of the LSR WG, This begins a 2 week WG adoption call for the following draft: https://datatracker.ietf.org/doc/draft-hegde-lsr-flex-algo-bw-con/ Please indicate your support or objection by May 27th, 2021. Authors, please respond to the list indicating whether you are aware of any IPR that applies to this draft. Thanks, Chris and Acee
_______________________________________________ Lsr mailing list [email protected] https://www.ietf.org/mailman/listinfo/lsr
