Hi, To confirm it is a IPv6 ND issue you can try to add a static neighbor entry with eg. 'ip neighbor loop0 10::2 1.2.3'. If that fixes the issue, you can then try to capture traffic when it happens and analyzes what is going with IPv6 ND, to understand whether it is a VPP issue or an issue with the other system.
Best ben > -----Original Message----- > From: [email protected] <[email protected]> On Behalf Of mark antony > Sent: jeudi 7 octobre 2021 06:26 > To: mark antony <[email protected]> > Cc: [email protected] > Subject: Re: [vpp-dev] show ip6 neighbor gives empty result periodically > > I appreciate if anyone give a suggestion. From every 500 icmp6 packet, we > have 2 or 3 packet drop. In large throughput, the problem get worse and we > couldn't pass the throughput test for 1G interface. > > > Best regards > Mark Antony > > On Tue, Oct 5, 2021, 21:05 mark antony via lists.fd.io > <http://lists.fd.io> <[email protected] > <mailto:[email protected]> > wrote: > > > Hi, > > I have a problem with the packet drop in the ipv6 static route > scenario. when we generated icmp6 packets, every time some packet dropped. > we searched for the cause of this and we found that " show ip6 > neighbor "gives an empty result periodically. what is the problem? > > > also, we tried to use "ip scan-neighbor ip6" to set longer update > intervals but it does not have any effect. > > Best Regards, > Mark Antony > > > >
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