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 <rob...@raszuk.net
<mailto:rob...@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 <wang...@chinatelecom.cn
<mailto:wang...@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 <rob...@raszuk.net
<mailto:rob...@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.
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*Gyan Mishra*
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