The new vpp cli to show ip4-arp and ip6-neighbor entries is “show ip neighbors”:
DBGvpp# sho ip neighbor
Time IP Flags Ethernet
Interface
8.4364 10.0.3.3 D 00:50:56:88:00:ac
GigabitEthernet1b/0/0
17.0595 7.0.0.2 D 00:50:56:88:ca:7e
GigabitEthernetb/0/0
114.1346 fc00:0:a00:6500::30 D 00:50:56:88:ca:7e
GigabitEthernetb/0/0
Regards,
John
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Laurent Dumont
Sent: Thursday, May 14, 2020 10:25 PM
To: vpp-dev@lists.fd.io
Subject: [vpp-dev] VPP - DPDK - No ARP learning on VPP and no ARP reply sent.
Hi!
I was doing some initial experimentation with VPP/SRIOV/DPDK and I just wanted
to see if some of the things I was experiencing we're expected. I was looking
at understanding the baseline behavior for something like VPP + DPDK.
I have a small test POC with the following topology.
VM Ubuntu 18.04( with the "linux-image-extra-virtual" package) ---> (VPP +
DPDK + IP address on the VPP interface) ---> VF ---> PF (compute with SRIOV on
X710 cards) ---> TOR interface - untagged.
What I am seeing :
1. VPP is telling me I have both RX and TX packets.
2. That said, no ARP entry for the TOR is seen on VPP
3. The interface on the TOR is also not seeing any ARP entry for the VPP
interface. The TOR is also indicating that RX and TX packets are present.
Are there any inherent limitations to the ARP with VPP/DPDK?
One weird thing is that trying to show the ARP from VPP doesn't seem to be a
valid command :
vpp# sh ip arp
show ip: unknown input `arp'
Here are some more debugging output.
vpp# show version
vpp v20.01-release built by root on 980ae64453f3 at 2020-01-29T22:13:47
vpp# show int address
VirtualFunctionEthernet0/5/0 (up):
L3 1.2.3.4/31<http://1.2.3.4/31>
vpp# show hardware-interfaces
Name Idx Link Hardware
VirtualFunctionEthernet0/5/0 1 up VirtualFunctionEthernet0/5/0
Link speed: 10 Gbps
Ethernet address fa:16:3e:92:30:f1
Intel X710/XL710 Family VF
carrier up full duplex mtu 9206
flags: admin-up pmd maybe-multiseg tx-offload intel-phdr-cksum rx-ip4-cksum
Devargs:
rx: queues 1 (max 16), desc 1024 (min 64 max 4096 align 32)
tx: queues 1 (max 16), desc 1024 (min 64 max 4096 align 32)
pci: device 8086:154c subsystem 103c:0000 address 0000:00:05.00 numa 0
max rx packet len: 9728
promiscuous: unicast off all-multicast on
vlan offload: strip off filter off qinq off
rx offload avail: vlan-strip ipv4-cksum udp-cksum tcp-cksum qinq-strip
outer-ipv4-cksum vlan-filter jumbo-frame scatter
rx offload active: ipv4-cksum jumbo-frame scatter
tx offload avail: vlan-insert ipv4-cksum udp-cksum tcp-cksum sctp-cksum
tcp-tso outer-ipv4-cksum qinq-insert vxlan-tnl-tso
gre-tnl-tso ipip-tnl-tso geneve-tnl-tso multi-segs
tx offload active: udp-cksum tcp-cksum multi-segs
rss avail: ipv4-frag ipv4-tcp ipv4-udp ipv4-sctp ipv4-other
ipv6-frag
ipv6-tcp ipv6-udp ipv6-sctp ipv6-other l2-payload
rss active: none
tx burst function: i40e_xmit_pkts
rx burst function: i40e_recv_scattered_pkts_vec_avx2
tx frames ok 36
tx bytes ok 1512
rx frames ok 26
rx bytes ok 3014
extended stats:
rx good packets 26
tx good packets 36
rx good bytes 3014
tx good bytes 1512
rx bytes 3014
rx broadcast packets 26
tx bytes 1512
tx broadcast packets 36
local0 0 down local0
Link speed: unknown
local
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
VirtualFunctionEthernet0/5/0 1 up 9000/0/0/0 rx packets
26
rx bytes
2910
tx packets
36
tx bytes
1512
drops
14
ip4
25
local0 0 down 0/0/0/0 drops
25
vpp#
RP/0/RP0/CPU0:tor-4.qa-site1#show run int tenGigE 0/0/0/37
Fri May 15 02:22:57.640 UTC
interface TenGigE0/0/0/37
mtu 9216
ipv4 address 1.2.3.5 255.255.255.252
load-interval 30
!
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