Re: [CCAMP] [Teas] Decision point on scope of draft-ietf-teas-ietf-network-slices

[Aihua Guo <[e-mail]>]

Hi Igor,

For OTN/OCh tunnels, both top-down and bottom-up creation are supported and
solutions have been deployed in the field AFAIK. The TE tunnel model also
supports the top-down approach by using the "dependent-tunnel"
configuration.

For example, a request for a 100GE client signal can drive the creation of
an OTU-4 OTN tunnel, which can drive the creation of an underlying OCh if
it is not present and policy permits it.

Thanks,
Aihua

On Mon, Mar 14, 2022 at 5:28 PM Igor Bryskin <i_bryskin=
[e-mail]> wrote:

> Tarek,
>
> I think you are missing the point. You are basically saying that top-down
> multi-layer TE is possible, and it is up to a smart NSC to realize it. I am
> saying that we have tried that many times from different angles and have
> failed to achieve that so far, even on two-layer OTN/Och networks - most
> natural low growing fruit for this kind of thing. What makes you think that
> NS effort shows a better promise for the success?
>
> Cheers,
> Igor
>
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> On Mon, Mar 14, 2022 at 4:52 PM, Tarek Saad
> <[e-mail]> wrote:
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