Jan Hugo,

> But this basically means that, for now, it won't be possible to create a BGP 
> router with a combination of FRR and VPP doing both IPv4 and IPv6 with OSPF 
> and BGP.
> Or do you see possibilities to make OSPFv3 work?

Sorry, for derailing your thread and making it into an architectural 
discussion. ;-)
If you ask my opinion, I would probably prefer it not to go into the main 
repository.

That said, if it works for OSPFv2, one shouldn't think it would be that hard to 
make it work for OSPFv3 either.
Probably some ARP/ND issues? Ray, would you know?

Best regards,
Ole



> 
> Jan Hugo Prins
> 
> 
> On 04/11/2018 03:20 PM, Ray Kinsella wrote:
>> Hi Ole,
>> 
>> I agree - but completely reinventing the wheel is not a the best course 
>> either. These are tried and tested implementations and are worth reusing, I 
>> do agree that integrating through the Linux Kernel is not ideal.
>> 
>> We developed the router plugin to show that integration was possible we 
>> never claimed that it was the 'best' way to integrate either.
>> 
>> Plugging a Quagga/FRR/Bird etc into VPP/HC is definitely the better path. 
>> Historically it has been hard with Quagga due to GPL licensing, I understand 
>> that FRR is the easiest path.
>> 
>> Ray K
>> 
>> On 11/04/2018 09:33, Ole Troan wrote:
>>> Hi Jan,
>>> 
>>>> Is someone actively maintaining the router plugin?
>>> 
>>> I'm not a big fan of the router plugin.
>>> The starting point of the router plugin is "how can you take an unmodified 
>>> routing protocol implementation and make it work with VPP".
>>> That leads to all kinds of complexities as the two methods they tried shows.
>>> 
>>> If we change the premise does the solution space look better?
>>> 
>>> I think we could change the routing protocol implementation to talk 
>>> directly with VPP's API for interfaces / interface events, it programs the 
>>> VPP FIB directly.
>>> Then it could send and receive packets somewhat similar to what we have for 
>>> the punt Unix domain socket.
>>> We might need a better punt path mechanism, where a Linux application can 
>>> register for a particular IP protocol (like 89 for OSPF) on a particular 
>>> interface. But that should be easy to do.
>>> 
>>> I did have a brief chat with David Lamparter of Quagga fame and he had 
>>> thought about doing it in a similar way.
>>> 
>>> What is your particular use case? Is it just a routing protocol you need?
>>> 
>>> Best regards,
>>> Ole
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
>> 
>> 
> 
> --
> Kind regards
> 
> Jan Hugo Prins
> DevOps Engineer
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