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Re: [mpls] MPLS extension header

Stewart Bryant <stewart.bryant@gmail.com> Thu, 09 August 2018 07:35 UTC

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From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Thu, 09 Aug 2018 10:35:20 +0300
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References: <78A2745BE9B57D4F9D27F86655EB87F93750CBB5@sjceml521-mbx.china.huawei.com> <ed42ce65-7281-4c4b-b67f-0d50b86a6759.xiaohu.xxh@alibaba-inc.com>
To: "\"徐小虎(义先)\"" <xiaohu.xxh@alibaba-inc.com>
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Subject: Re: [mpls] MPLS extension header
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Xiahou

A better approach for metadata would be s/PIL/GAL as described in:

https://www.ietf.org/archive/id/draft-guichard-sfc-mpls-metadata-00.txt

I cannot see why we need another reserved label when the one we have would work fine in this application, and many more.

Stewart



Sent from my iPad

> On 9 Aug 2018, at 05:56, 徐小虎(义先) <xiaohu.xxh@alibaba-inc.com> wrote:
> 
> Hi Haoyu,
> 
> I believe it's worthwhile to introduce an MPLS payload indicator into MPLS so as to support various MPLS payload types in a long run. However, I wonder whether the mechanism as described in (https://tools.ietf.org/html/draft-xu-mpls-payload-protocol-identifier) has met this demand.
> 
> Best regards,
> Xiaohu
> ------------------------------------------------------------------
> From:Haoyu song <haoyu.song@huawei.com>
> Send Time:2018年8月9日(星期四) 06:24
> To:mpls@ietf.org <mpls@ietf.org>
> Subject:[mpls] MPLS extension header
> 
> Dear all,
>  
> In IETF102 we presented the idea of MPLS extension header and received a lot of discussion. We have updated the draft to reflect the feedbacks we received.  
> It seems most people agree that we need extension headers (EH) to support multiple emerging in-network services, but there could be debate on how to indicate the existence of the EHs.
> In the document we provide our investigations and suggestions but we do want to see your opinion. Hopefully we can achieve a consensus before IETF103.   
> Thank you in advance for your help!
>  
> https://www.ietf.org/id/draft-song-mpls-extension-header-01.txt
>  
> Best regards,
> Haoyu
> 
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