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Re: [mpls] Concerns about ISD

Haoyu Song <haoyu.song@futurewei.com> Fri, 15 April 2022 17:42 UTC

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From: Haoyu Song <haoyu.song@futurewei.com>
To: Robert Raszuk <rraszuk@gmail.com>
CC: "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: [mpls] Concerns about ISD
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Subject: Re: [mpls] Concerns about ISD
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Hi Robert,


Ok - but I do not see that MPLS transport is specifically capable of carrying such opaque data as part of MPLS stack. Those should be carried outside of it if needed. And by outside I mean behind lable stack or in the front of the lable stack (in the front means by additional encap between SF nodes).

Totally agree. And this is exactly reflected in our extension header draft https://datatracker.ietf.org/doc/draft-song-mpls-extension-header/ in which the data are chained behind the stack.  I believe this is the least intrusive and the simplest method to support the extensions. Look forward to your suggestions and comments on it.

Best regards,
Haoyu

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