On 23/08/2020 21:47, Adrian Farrel wrote:Hi Tom,
You're right (a condition that must be scarily familiar for you).
Probably...
OLD
o Collectively, the two ranges are known as Special Purpose Labels
(SPL).
o The special purpose labels from the lower range will be called
Base Special Purpose Labels (bSPL).
o The special purpose labels from the higher range will be called
Extended Special Purpose Labels (eSPL).
NEW
o Collectively, the two ranges (0-15, and 16-1048575) are known
as Special Purpose Labels (SPL).
o The special purpose labels from the lower range (0-15) will be
called Base Special Purpose Labels (bSPL).
o The special purpose labels from the higher range (16-1048575)
will be called Extended Special Purpose Labels (eSPL). The
reserved values 0-15 from the 'Extended Special-Purpose MPLS
Label Values' registry do not need a name as they can never be
used.
END
Yes, clearer.Perhaps" The reserved values 0-15 from the 'Extended Special-Purpose MPLS Label Values' registry do not need a name as they are not available for allocation. "to tie in with the wording of IANA. They SHOULD NOT or MUST NOT be used but I can see some independent-minded organisation deciding that because noone else will ever use them then they can and they will so I think 'can never be used' is not quite right. They can never be allocated so we do not need an identifier for them, which is what I am wanting to express.I note that this is Informational and so RFC2119 language is best avoided.Tom Petch
There is no history in the Internet of anyone ever treating a "never to be used" value as an opportunity :)
How about:
" The
reserved values 0-15 from the 'Extended Special-Purpose MPLS
Label Values' registry do not need a name as they MUST NOT be used “ Alternatively:
" The
reserved values 0-15 from the 'Extended Special-Purpose MPLS
Label Values’ registry are called the MUST NOT USE range range as they MUST NOT be used. "
- Stewart
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