Speaking as WG member:

> On Feb 12, 2025, at 19:43, Tony Li <[email protected]> wrote:
> 
> 
> Hi Robert,
> 
>> With that I recommend to look a bit broader and count how many robust, 
>> scalable and production grade open source implementations have we seen of 
>> ISIS when comparing with the very same of BGP. 
>> 
>> I will let the reader guess why it looks as it looks  .... why it is so much 
>> easier to take few BGP RFCs and implement at least some essential parts of 
>> protocol with required address families in a deployable way.
> 
> 
> Let’s not let the reader guess.  
> 
> IS-IS is less popular than BGP.  This should not be news.  IS-IS has 
> competition in the IGP space. BGP has no competition.
> 
> Show me the complaints from the open-source IS-IS implementors who cannot 
> figure out the spec.  Based on that empty set, I don’t think that there’s an 
> issue.

For example, FRR https://github.com/FRRouting/frr/tree/master/isisd supports 
IS-IS.  

Thanks,
Acee



> 
> Regards,
> T
> 
> 

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