回复:Re: 回复:ForCES meeting minutes (draft)

Dear Joel:






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----- 原邮件 -----
发件人: "Joel M. Halpern" <[email protected]>
日期: 星期四, 十一月 9日, 2006 上午9:22
主题: Re: 回复:ForCES meeting minutes (draft)

> There are two issues here:
> 
> 1) We have all agreed that it is desirable to be able to pass 
> meta-data between FEs.  This is the Fi interface.
> 2) We can build solutions with FEs from different vendors without 
> passing meta-data.  We do not get teh degree of scaling we would 
> like, but it does still work.  Assertions that it does not work 
> will 
> prevent folks from utilizing the protocol, and therefore prevent 
> us 
> from ever getting to work on Fi.  (I am very confident that doing 
> this without passing meta-data around is useful because I have 
> over 
> the years built several sets of solutions that were distributed 
> routers without meta data passing.)

For Example, in traditional router, many policies are based on source port in forwarding process.
for instance, to filter some unwanted traffic based on the source port, 
and source port information could be different for each packet, and destination address in the header of packets
has no relationship with the source port, given that the source port is carried in meta-data, I do not know how 
to reconstruct this info again when it is needed later.


Kind Regards,

Michael   


> 
> As a background, this issue of inter-FE communication within an NE 
> does not depend upon nor is it driven by the integration of legacy 
> routers.  It is desirable in and of itself.
> Once it is done, the legacy router integration techniques will be 
> able to make use of it, likely with no further change to the 
> protocol 
> mechanisms.
> 
> Yours,
> Joel M. Halpern
> 
> At 08:03 PM 11/8/2006, Ma.Huaiyuan 50376 wrote:
> >Anyway, we have to solve this problem sooner or later, without 
> >defining this meta-data properly,
> >FEs from different vendors cannot interoperate directly, only FEs 
> >from the same vendors can work together.
> >
> >Now I recognized that many people including Joel, Robert and Avri 
> >etc identified this question already,
> >Hopfully we can start working on this question soon.
>