Hi Marcos, If you are building VPP 20.05 from source then the easiest way is to simply change the value at "#define NAT_FQ_NELTS 64" in src/plugins/nat/nat.h from 64 to something larger, we have been using 512 which seems to work fine in our case.
Note that this can help with one specific kind of packet drops in VPP NAT called "congestion drops", if you have packet loss for other reasons then a NAT_FQ_NELTS change will probably not help. Best regards, Elias On Wed, 2021-02-24 at 13:45 -0300, Marcos - Mgiga wrote: > Hi Elias, > > I have been following this discussion and finally I gave VPP a try > implementing it as a CGN gateway. Unfortunattely some issues came up, > like packets loss and I believe your patch can be helpful, > > Would mind give me guidance to deploy it? I'm using VPP 20.05 as you > did > > Best Regards > > -----Mensagem original----- > De: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> Em nome de Elias > Rudberg > Enviada em: terça-feira, 26 de janeiro de 2021 11:10 > Para: ksek...@cisco.com > Cc: vpp-dev@lists.fd.io > Assunto: Re: [vpp-dev] Increasing NAT worker handoff frame queue size > NAT_FQ_NELTS to avoid congestion drops? > > Hi Klement, > > > > I see no reason why this shouldn’t be configurable. > > > [...] > > > Would you like to submit a patch? > > I had a patch in December that was lying around too long so there > were merge conflicts, so now I made a new one again. Third time's the > charm, I hope. Here it is: > > https://gerrit.fd.io/r/c/vpp/+/30933 > > It makes the frame queue size configurable and also adds API support > and a test verifying the API support. Please have a look! > > / Elias
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