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Re: [mpls] Concerns about ISD

Tony Li <tony.li@tony.li> Tue, 12 April 2022 14:13 UTC

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From: Tony Li <tony.li@tony.li>
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Date: Tue, 12 Apr 2022 07:13:33 -0700
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Cc: Tianran Zhou <zhoutianran@huawei.com>, "mpls@ietf.org" <mpls@ietf.org>
To: "Dongjie (Jimmy)" <jie.dong@huawei.com>
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Subject: Re: [mpls] Concerns about ISD
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Hi Jie,

> We have had two presentations of hardware analysis. 
>  
> One on 3/10/2022 and another on 1/27/2022.  What more are you expecting?
>  
> [Jie] The analysis we had on 1/27/2022 and 3/3/2022 in the DT showed the overhead and complexity of ISD, and questioned whether ISD is needed or not. The analysis slides are attached in the DT meeting notes. 
>  
> We are still missing equivalent hardware analysis from the proponents of draft-kompella-mpls-mspl4fa. Without that, it is hard to tell whether the proposal is implementable with existing or new hardware, and what would be the cost. 


That was the presentation on 3/10.

As I recall, the result was that it was easily implementable, but the recommendation was to replace continuation bits with length fields.

T

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