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[Marcos Felipe Schwarz <>]

Thanks for the answer,

Just to confirm, these tunnel options you listed can be implemented in-line 
by RARE FreeRtr, so a PolKA Core FreeRtr P4 device can at the same time, 
receive a encapsulated PolKA packet (over vlan, vxlan, nvgre, l2tp), 
decapsulate the tunnel, make routing decisions on the PolKA header, and 
re-encapsulate before transmiting to the next hop?

A similar approch that is used to transport SR-MPLS packets over legacy 
networks is encapsulating MPLS traffic is over UDP (RFC 7510).

Regards,

Marcos Schwarz

-----Mensagem original-----
De: mc36 <> 
Enviada em: quinta-feira, 12 de maio de 2022 16:54
Para: Marcos Felipe Schwarz <>; 
; Cristina Klippel Dominicini 
<>; Frédéric LOUI <>; 
Simon Leinen <>
Cc: Everson Scherrer Borges <>; Magnos Martinello 
<>; Rafael Silva Guimarães <>
Assunto: Re: RES: [RARE-users] Experiments PolKA vs. Segment Routing

hi,
so it highly depends on the underlay chosen... those that propagate 
explicitly the upper layer's ethertype, will work..
examples include vlan, gre and l2tp, all with or without macsec... those that 
dont, like ipip and wireguard, can only carry
ipv4 or ipv6 because on the receiving side, one can only have the first 4 
bits to _guess_ the upper layer protocol...
br,
cs


On 5/12/22 19:25, Marcos Felipe Schwarz wrote:
> One question I have.
> Considering current PolKA Implementation on freeRtr, it can only be run 
> over a L2 circuit (i.e. a VLAN or direct connection). Or can we run a PolKA 
> tunnel over a L3 network, similar to VXLAN?
> I'm asking this, because there are some sites that are able to reach only 
> 10G over a L2 circuit but have 100G on a shared internet Link. So if 
> freeRtr is more flexible we can consume more bandwidth for the experiments.
> 
> Regards,
> 
> Marcos Schwarz
> 
> -----Mensagem original-----
> De: mc36 <>
> Enviada em: quarta-feira, 11 de maio de 2022 02:13
> Para: ; Cristina Klippel Dominicini 
> <>; Fr  d  ric LOUI 
> <>; Simon Leinen <>
> Cc: Marcos Felipe Schwarz <>; Everson Scherrer 
> Borges <>; Magnos Martinello <>; 
> Rafael Silva Guimar  es <>
> Assunto: Re: [RARE-users] Experiments PolKA vs. Segment Routing
> 
> hi,
> 
> On 5/11/22 01:05, Cristina Klippel Dominicini wrote:
>> Regarding the WCMP feature, if possible, it would be really good for the 
>> data intensive science use case. In this way, we could load balance 
>> between a set of tunnels.
> 
> wcmp was added to the todo.txt and after the the test runs, it's in the 
> todo too:
> https://github.com/rare-freertr/freeRtr/commit/dfcaeb0e5cb085434fa35fc
> 84aa2540b2197f397 until that, you can use multiple tunnels and ecmp... 
> so if you want 1/3-2/3 over 2 paths, then you'll set up 3 tunnels, 1 over 
> 1/3 path, and 2 over 2/3 path...
> 
> br,
> cs