On Tue, Dec 2, 2025 at 8:46 PM Robert Raszuk <[email protected]> wrote:

>
>
> When I constructed 10 full racks of hardware using ISIS folks were shocked
> - and pointed out that I am not using an IETF standard approach :). Then
> when I demonstrated that connectivity restoration upon any node or link
> failure is repaired in less then 50 ms the masks went off.
>

;-)


>
> Maybe what is actually needed is an  informational RFC - just like RFC7938
> - simply illustrating that one can construct DC using ISIS. It is obvious
> to me, but I admit there is no RFC I am aware of to show operators that
> "Large-Scale Data Centers" can be robustly build with IGPs.
>

I think it's open secret by now that one very, very large hyperscaler ran
OSPF in all fabrics ...

--- tony
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