Joel:

Before implementation, we must assure it is feasible. Obviously, the current 
proposal is impractical.

As Robert has pointed also out, the length limit for the every potential MP-TLV 
is sky(unlimited length) and forever(the receiver doesn’t know when to stop 
parsing to form the original big-TLV)

Aijun Wang
China Telecom

> On Mar 29, 2025, at 09:19, Joel Halpern <j...@joelhalpern.com> wrote:
> 
> That sounds like it rather depends upon your implementation approach?
> 
> Yours,
> 
> Joel
> 
>> On 3/28/2025 9:07 PM, Aijun Wang wrote:
>> There is no necessary to concatenate the difference type IS-IS TLVs 
>> together, but it must be done for the MP-TLV pieces.
>> 
>> I have never seen any example that there is no any length signaling  for 
>> segmentation one big-TLV and can concatenate it correctly without the right 
>> length indication.
>> 
>> It’s pity the LSR WG will endorse such proposal.
>> 
>> 
>> 
>> Aijun Wang
>> China Telecom
>> 
>>>> On Mar 29, 2025, at 08:16, Tony Li <tony...@tony.li> wrote:
>>> 
>>> 
>>> Hi Robert,
>>> 
>>>> Sorry if I was not very clear but my point was that MP-TLV may be coming 
>>>> in multiple LSPs - something which to the best of my understanding is not 
>>>> the case today with any TLV type. On that basis as LSP length natural 
>>>> boundary is gone it seems sky is the limit now.
>>> 
>>> This is incorrect.  A TLV may appear in many different framgments.  For 
>>> example, a router may have multiple adjacencies.  These may be spread out 
>>> across fragments.
>>> 
>>> T
>>> 
>>> 
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