Hi, Thanks, we set ipv6 neighbor staticly, but the ipv6 neighbor table gets an update every several minutes and the ping problem still exist. how we can get rid of these updates? We checked the ping between these updates and we had a drop at exactly these times.
Best Regards Mark On Thu, Oct 7, 2021 at 12:36 PM Benoit Ganne (bganne) <bga...@cisco.com> wrote: > 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: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of mark antony > > Sent: jeudi 7 octobre 2021 06:26 > > To: mark antony <mark.antonnyy.1...@gmail.com> > > Cc: vpp-dev@lists.fd.io > > 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> <mark.antonnyy.1984=gmail....@lists.fd.io > > <mailto:gmail....@lists.fd.io> > 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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