Re: [vpp-dev] show ip6 neighbor gives empty result periodically
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) 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 On Behalf Of mark antony > > Sent: jeudi 7 octobre 2021 06:26 > > To: mark antony > > 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> > <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 > > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#20304): https://lists.fd.io/g/vpp-dev/message/20304 Mute This Topic: https://lists.fd.io/mt/86100013/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
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 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 > > > > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#20291): https://lists.fd.io/g/vpp-dev/message/20291 Mute This Topic: https://lists.fd.io/mt/86100013/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] getting ip6-glean:address overflow drops
Hi Neale, Thanks for the reply, I notice a problem today for ipv4, I set an IP on multiple interfaces, but during the test, the IP of one of them disappeared. GigabitEthernet3f/0/0 (up): L3 200.85.1.1/24 GigabitEthernet3f/0/1 (up): GigabitEthernet3f/0/2 (up): L3 201.85.1.1/24 I get some errors like this in "sh errors" 469GigabitEthernet18/0/1-txTx packet drops (dpdk tx failure) and like this in syslog: vnet[18135]: dpdk_pool_create:504: ioctl(VFIO_IOMMU_MAP_DMA) pool 'dpdk_mbuf_pool_socket0': Bad address (errno 14) Sep 25 07:35:35 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 40: scatter Sep 25 07:35:35 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 41: scatter Sep 25 07:35:35 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 42: scatter Sep 25 07:35:35 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 43: scatter Sep 25 07:35:36 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 52: scatter Sep 25 07:35:36 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 53: scatter Sep 25 07:35:36 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 54: scatter Sep 25 07:35:36 Rahyab22K-1 vnet[23814]: dpdk: unsupported rx offloads requested on port 55: scatter Sep 25 08:31:54 Rahyab22K-1 kernel: [261685.085366] DMAR: DRHD: handling fault status reg 302 Sep 25 08:31:54 Rahyab22K-1 kernel: [261685.091285] DMAR: [DMA Write] Request device [18:00.1] fault addr a9fb91000 [fault reason 05] PTE Write access is not set is this normal? I attached my startup.conf. I use vfio_pci driver and have iommu=pt intel_iommu=on config in my grub. On Thu, Sep 23, 2021, 15:07 Neale Ranns wrote: > Hi Mark, > > > > If you have a glean pointing out an interface, then you have an ipv6 > address on that interface. The presence of an address will ipv6 enable the > interface, so you don’t need that command as well. > > > > Your errors are not necessarily signs of a bad config, but an indication > that a host on that link is unreachable. > > > > /neale > > > > *From: *mark antony > *Date: *Thursday, 23 September 2021 at 12:12 > *To: *Neale Ranns > *Cc: *vpp-dev@lists.fd.io > *Subject: *Re: [vpp-dev] getting ip6-glean:address overflow drops > > Hi neale, > > > > Thanks for the info, is enabling ipv6 on interface with "enable ip6 > interface" command is necessary? I saw before without it i could ping in a > very simple ipv6 scenario but can enabling ipv6 on interfaces help this > address overflow errors? > > > > Best regards, > > Mark > > > > On Thu, Sep 23, 2021, 12:45 Neale Ranns wrote: > > Hi Mark, > > > > If traffic matches a ipv6-glean then it is destined to a host on an > attached subnet that does not yet have an ND entry. Matching the glean will > generate an ND solicitation to that host, but these are rate limited. An > address overflow can happen when: > > 1. when the rate limiting kicks in. > > 2. the egress link is down > > 3. some other reasons but I doubt that’s the case here: see > src/vnet/ip-neoghbor/ip6_neighbor.c:202 for details. > > > > /neale > > > > > > *From: *vpp-dev@lists.fd.io on behalf of mark > antony via lists.fd.io > *Date: *Wednesday, 22 September 2021 at 18:05 > *To: *vpp-dev@lists.fd.io > *Subject: *[vpp-dev] getting ip6-glean:address overflow drops > > Hi all, > > I get about 5 million packet drops due to ip6-glean: address overflow > drops. I attached my "vppctl sh error" command result. I am sure about my > configuration. What could be the possible reasons for this error? > > > > thanks, > > mark > > startup1.conf Description: Binary data -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#20202): https://lists.fd.io/g/vpp-dev/message/20202 Mute This Topic: https://lists.fd.io/mt/85793501/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] getting ip6-glean:address overflow drops
Hi neale, Thanks for the info, is enabling ipv6 on interface with "enable ip6 interface" command is necessary? I saw before without it i could ping in a very simple ipv6 scenario but can enabling ipv6 on interfaces help this address overflow errors? Best regards, Mark On Thu, Sep 23, 2021, 12:45 Neale Ranns wrote: > Hi Mark, > > > > If traffic matches a ipv6-glean then it is destined to a host on an > attached subnet that does not yet have an ND entry. Matching the glean will > generate an ND solicitation to that host, but these are rate limited. An > address overflow can happen when: > >1. when the rate limiting kicks in. >2. the egress link is down >3. some other reasons but I doubt that’s the case here: see >src/vnet/ip-neoghbor/ip6_neighbor.c:202 for details. > > > > /neale > > > > > > *From: *vpp-dev@lists.fd.io on behalf of mark > antony via lists.fd.io > *Date: *Wednesday, 22 September 2021 at 18:05 > *To: *vpp-dev@lists.fd.io > *Subject: *[vpp-dev] getting ip6-glean:address overflow drops > > Hi all, > > I get about 5 million packet drops due to ip6-glean: address overflow > drops. I attached my "vppctl sh error" command result. I am sure about my > configuration. What could be the possible reasons for this error? > > > > thanks, > > mark > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#20191): https://lists.fd.io/g/vpp-dev/message/20191 Mute This Topic: https://lists.fd.io/mt/85793501/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] getting ip6-glean:address overflow drops
Hi all, I get about 5 million packet drops due to ip6-glean: address overflow drops. I attached my "vppctl sh error" command result. I am sure about my configuration. What could be the possible reasons for this error? thanks, mark vpp# sh errors CountNode Reason 336 ip6-icmp-input router advertisements sent 1 GigabitEthernet88/0/3-output interface is down 7 GigabitEthernetaf/0/0-output interface is down 7 GigabitEthernetaf/0/1-output interface is down 7 GigabitEthernetaf/0/2-output interface is down 7 GigabitEthernetaf/0/3-output interface is down 7 GigabitEthernetb1/0/0-output interface is down 7 GigabitEthernetb1/0/1-output interface is down 7 GigabitEthernetb1/0/2-output interface is down 7 GigabitEthernetb1/0/3-output interface is down 50arp-input ARP request IP4 source address learned 5059470ip6-glean address overflow drops 39813ip6-glean neighbor solicitations sent 57237ip4-glean address overflow drops 79ip4-glean ARP requests sent 25837 ip6-icmp-input neighbor solicitations for unknown targets 50arp-input ARP request IP4 source address learned 5059412ip6-glean address overflow drops 39801ip6-glean neighbor solicitations sent 61581ip4-glean address overflow drops 84ip4-glean ARP requests sent 26474 ip6-icmp-input neighbor solicitations for unknown targets 35arp-input ARP request IP4 source address learned 2529688ip6-glean address overflow drops 19893ip6-glean neighbor solicitations sent 98141ip4-glean address overflow drops 58ip4-glean ARP requests sent 13540 ip6-icmp-input neighbor solicitations for unknown targets 434GigabitEthernet18/0/0-txTx packet drops (dpdk tx failure) 25arp-input ARP request IP4 source address learned 2529722ip6-glean address overflow drops 19893ip6-glean neighbor solicitations sent 190983ip4-glean address overflow drops 95ip4-glean ARP requests sent 13206 ip6-icmp-input neighbor solicitations for unknown targets 469GigabitEthernet18/0/1-txTx packet drops (dpdk tx failure) 38arp-input ARP request IP4 source address learned 2529801ip6-glean address overflow drops -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#20181): https://lists.fd.io/g/vpp-dev/message/20181 Mute This Topic: https://lists.fd.io/mt/85793501/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] ping to loopback
Hi friends, how can I ping a loopback in vpp? I can ping the normal interface from cisco but for loopback no. thanks -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#19935): https://lists.fd.io/g/vpp-dev/message/19935 Mute This Topic: https://lists.fd.io/mt/84778476/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
