Hi John,

Thanks again for your quick response.

Regarding the OSPFv3 Extended LSA registries, it is a bit challenging to do
what (I think) you are asking for. We have a bunch (8 today and a remote
possibility of more being added) of E-LSAs and all of them share the same
E-LSA TLV space (where more TLVs can be expected to be defined). And then,
for all of these E-LSA TLVs, we have a single shared E-LSA sub-TLV (at any
level of hierarchy). So potentially, we can have a rather complicated set
of columns depending on how we want to go about it.

That is why, here, we are limiting to the current need - to indicate the
applicability of a sub-TLV to L2 Bundle Member TLV.

I am open to your and WG's suggestions on this.

Thanks,
Ketan


On Fri, Sep 2, 2022 at 10:23 PM John Scudder <[email protected]> wrote:

> Hi Ketan,
>
> Thanks for the update.
>
> > On Sep 2, 2022, at 9:16 AM, Ketan Talaulikar <[email protected]>
> wrote:
> >
> > Since the OSPFv3 registry is shared for all OSPFv3 Extended LSA TLVs'
> sub-TLVs, we need another flag X for those sub-TLVs that are not associated
> with the Router Link TLV.
>
> Good point. But, doesn’t that suggest that if we’re going to annotate the
> registry anyway, it should be annotated to indicate applicability for each
> sub-TLV type? That would clean up the presentation from Y/N/X to just Y/N
> per column. It would add a lot more columns but we don’t pay by the column.
> :-)
>
> If there’s some reason this wouldn’t be valuable that’s OK but I’d like to
> understand what makes Router Link and L2 Bundle Member need special
> treatment that the other sub-TLVs don’t need.
>
> Thanks,
>
> —John
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