Re: [Lsr] New Version Notification for draft-wang-lsr-isis-mfi-00.txt
wangyali <wangyali11@huawei.com> Mon, 01 March 2021 09:50 UTC
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From: wangyali <wangyali11@huawei.com>
To: Peter Psenak <ppsenak@cisco.com>, Gyan Mishra <hayabusagsm@gmail.com>, Robert Raszuk <robert@raszuk.net>
CC: Huzhibo <huzhibo@huawei.com>, Aijun Wang <wangaj3@chinatelecom.cn>, Tony Li <tony.li@tony.li>, lsr <lsr@ietf.org>, Tianran Zhou <zhoutianran@huawei.com>
Thread-Topic: [Lsr] New Version Notification for draft-wang-lsr-isis-mfi-00.txt
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Date: Mon, 01 Mar 2021 09:49:40 +0000
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Subject: Re: [Lsr] New Version Notification for draft-wang-lsr-isis-mfi-00.txt
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Hi Peter, Many thanks for your feedback. First of all, I'm sorry for the confusion I had caused you from my previous misunderstanding. And I want to clarify that a single and common LSDB is shared by all MFIs. Best, Yali -----Original Message----- From: Peter Psenak [mailto:ppsenak@cisco.com] Sent: Sunday, February 28, 2021 8:23 PM To: Gyan Mishra <hayabusagsm@gmail.com>; Robert Raszuk <robert@raszuk.net> Cc: Huzhibo <huzhibo@huawei.com>; Aijun Wang <wangaj3@chinatelecom.cn>; Tony Li <tony.li@tony.li>; lsr <lsr@ietf.org>; Tianran Zhou <zhoutianran@huawei.com>; wangyali <wangyali11@huawei.com> Subject: Re: [Lsr] New Version Notification for draft-wang-lsr-isis-mfi-00.txt Gyan, On 26/02/2021 17:19, Gyan Mishra wrote: > > MFI seems more like flex algo with multiple sub topologies sharing a > common links in a topology where RFC 8202 MI is separated at the > process level separate LSDB. So completely different and of course > different goals and use cases for MI versus MFI. I would not use the fle-algo analogy - all flex-algos operate on top of a single LSDB, contrary to what is being proposed in MFI draft. > > MFI also seems to be a flood reduction mechanism by creating > multiple sub topology instances within a common LSDB. There are a > number of flood reduction drafts and this seems to be another method > of achieving the same. MFI draft proposes to keep the separate LSDB per MFI, so the above analogy is not correct either. thanks, Peter > > Gyan > > On Fri, Feb 26, 2021 at 7:10 AM Robert Raszuk <robert@raszuk.net > <mailto:robert@raszuk.net>> wrote: > > Aijun, > > How multi instance is implemented is at the discretion of a vendor. > It can be one process N threads or N processes. It can be both and > operator may choose. > > MFI is just one process - by the spec - so it is inferior. > > Cheers, > R. > > > On Fri, Feb 26, 2021 at 12:44 PM Aijun Wang <wangaj3@chinatelecom.cn > <mailto:wangaj3@chinatelecom.cn>> wrote: > > Hi, Robert: > > Separate into different protocol instances can accomplish the > similar task, but it has some deployment overhead. > MFIs within one instance can avoid such cumbersome work, and > doesn’t affect the basic routing calculation process. > > Aijun Wang > China Telecom > >> On Feb 26, 2021, at 19:00, Robert Raszuk <robert@raszuk.net >> <mailto:robert@raszuk.net>> wrote: >> >> Hi Yali, >> >> If this was precise, then the existing multi-instance >> mechanism would be sufficient. >> [Yali]: MFI is a different solution we recommend to solve >> this same and valuable issue. >> >> >> Well the way I understand this proposal MFI is much weaker >> solution in terms of required separation. >> >> In contrast RFC8202 allows to separate ISIS instances at the >> process level, but here MFIs as defined must be handled by the >> same ISIS process >> >> This document defines an extension to >> IS-IS to allow*one standard instance* of >> the protocol to support multiple update >> process operations. >> >> Thx, >> R. >> >> _______________________________________________ >> Lsr mailing list >> Lsr@ietf.org <mailto:Lsr@ietf.org> >> https://www.ietf.org/mailman/listinfo/lsr > > _______________________________________________ > Lsr mailing list > Lsr@ietf.org <mailto:Lsr@ietf.org> > https://www.ietf.org/mailman/listinfo/lsr > > -- > > <http://www.verizon.com/> > > *Gyan Mishra* > > /Network Solutions A//rchitect / > > /M 301 502-1347 > 13101 Columbia Pike > /Silver Spring, MD > >
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Tony Li
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Tony Li
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Robert Raszuk
- Re: [Lsr] New Version Notification for draft-wang… Aijun Wang
- Re: [Lsr] New Version Notification for draft-wang… Robert Raszuk
- Re: [Lsr] New Version Notification for draft-wang… Acee Lindem (acee)
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Tony Li
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Aijun Wang
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Peter Psenak
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… Tony Przygienda
- Re: [Lsr] New Version Notification for draft-wang… Tony Przygienda
- Re: [Lsr] New Version Notification for draft-wang… wangyali
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Tony Przygienda
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… Aijun Wang
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… Tony Przygienda
- Re: [Lsr] New Version Notification for draft-wang… Acee Lindem (acee)
- Re: [Lsr] New Version Notification for draft-wang… Gyan Mishra
- Re: [Lsr] New Version Notification for draft-wang… Les Ginsberg (ginsberg)
- Re: [Lsr] New Version Notification for draft-wang… Robert Raszuk
- Re: [Lsr] New Version Notification for draft-wang… Lizhenbin
- Re: [Lsr] New Version Notification for draft-wang… Lizhenbin
- Re: [Lsr] New Version Notification for draft-wang… Aijun Wang