We aren't talking generically about TLV space here. When I raised the question 
I certainly intended it to be limited to times, as is the case here, where we 
are literally duplicating registries b/c they both refer to the same thing. I 
didn't realize that we'd already done this with SR IGP Algorithm registry.

I did also include talking about what (if anything) to do with the duplicated 
containing TLV, but it seems no one wants to go there, which is fine, and I 
happen to agree probably is going too far.

Thanks,
Chris.

> On May 21, 2018, at 11:11 AM, Acee Lindem (acee) <[email protected]> wrote:
> 
> Hi Peter, Chris,
> 
> In this particular case, it may be ok as long as we just limit the code point 
> space to the 1 octet type (i.e., 0-255 with reserved values). However, for 
> all the reasons Peter and Les have already articulated, there will be cases 
> where the TLV or Sub-TLV registries cannot be common. So, I have to ask 
> myself just what are we gaining by here? The encodings are not going to be 
> identical (for all the previously mentioned reasons) and this leaves the door 
> open for time wasted on revisiting this issue...
> 
> Thanks,
> Acee
> 
> On 5/20/18, 9:21 AM, "Peter Psenak (ppsenak)" <[email protected]> wrote:
> 
>    Chris,
> 
>    On 20/05/18 01:47 , Christian Hopps wrote:
>> How about an option 2c
>> 
>>   2c: Leave the encodings the way they are, and use a common registry to 
>> define the type/value semantics.
> 
>    having a combined registry that defines FAD Sub-TLVs types is fine with me.
> 
>    thanks,
>    Peter
> 
> 
> 

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