Jeff, I see what you said, thank you for sharing information;
Cheers! Wang Weibin From: Jeff Tantsura <[email protected]> Sent: 2020年5月10日 3:24 To: Wang, Weibin (NSB - CN/Shanghai) <[email protected]> Cc: Ketan Talaulikar (ketant) <[email protected]>; [email protected] Subject: Re: [Lsr] draft-ietf-lsr-flex-algo Weibin, One could have an algo with MSD/ERLD as optimizations constrains, would be quite similar to colored links. Note - ERLD has implemented node capabilities only, so all links on a node will have to be pruned. The tradeoffs are - having centralized controller with global view computing a path that meets the constraints(classical BGP-LS + PCEP scenario) vs building a dynamic topology of connected nodes that meet a set of constrains, in first case, change in topology/capabilities would cause path recalculation/reoptimization on the PCE while in the second - IGP would recompute the topology locally. Regards, Jeff On May 9, 2020, at 01:27, Wang, Weibin (NSB - CN/Shanghai) <[email protected]<mailto:[email protected]>> wrote: Ketan, thank you for clarification. Cheers! Wang Weibin From: Ketan Talaulikar (ketant) <[email protected]<mailto:[email protected]>> Sent: 2020年5月9日 14:52 To: Wang, Weibin (NSB - CN/Shanghai) <[email protected]<mailto:[email protected]>>; [email protected]<mailto:[email protected]> Subject: RE: draft-ietf-lsr-flex-algo Hi Wang, You are correct. Though I wouldn’t call it a goal but rather a benefit/advantage – same applies to SR-MPLS where the label stack can be reduced. Thanks, Ketan From: Lsr <[email protected]<mailto:[email protected]>> On Behalf Of Wang, Weibin (NSB - CN/Shanghai) Sent: 08 May 2020 19:07 To: [email protected]<mailto:[email protected]> Subject: [Lsr] draft-ietf-lsr-flex-algo Hi authors: After reading through this draft lsr-flex-algo, I want to know whether there is a potential goal of this draft to reduce the SRH size with enabling flex-algo with admin group in SRv6 deployment, because without flex-algo we have to have a big SRH size when the SRH include more SRv6 SIDs, if we enable flex-algo under special topology and link constraint condition, in theory we can even construct a end to end SR path/tunnel without SRH, but it still meet TE requirement. So my question is whether the flex-algo can be used as tool to reduce SRH size? Cheers ! WANG Weibin _______________________________________________ Lsr mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/lsr
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