Difference between revisions of "VPP/How To Connect A PCI Interface To VPP"
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+ | [[Category:VPPTutorial]] | ||
== Introduction == | == Introduction == | ||
Line 8: | Line 9: | ||
=== Setting the number of NICs === | === Setting the number of NICs === | ||
− | Once you can get this Vagrant working, set the environment variable VPP_VAGRANT_NICS to the number of additional NICs you would like, in this tutorial, we will use the example of | + | Once you can get this Vagrant working, set the environment variable VPP_VAGRANT_NICS to the number of additional NICs you would like, in this tutorial, we will use the example of 1 additional NIC. |
'''Example:''' | '''Example:''' | ||
<pre> | <pre> | ||
− | VPP_VAGRANT_NICS= | + | VPP_VAGRANT_NICS=1 |
</pre> | </pre> | ||
Line 18: | Line 19: | ||
<pre> | <pre> | ||
− | export vagrant destroy -f;vagrant up | + | export vagrant destroy -f;vagrant up |
</pre> | </pre> | ||
Line 42: | Line 43: | ||
valid_lft forever preferred_lft forever | valid_lft forever preferred_lft forever | ||
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 | 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 | ||
− | link/ether 08:00:27: | + | link/ether 08:00:27:af:66:51 brd ff:ff:ff:ff:ff:ff |
− | inet 172.28.128. | + | inet 172.28.128.5/24 brd 172.28.128.255 scope global eth1 |
valid_lft forever preferred_lft forever | valid_lft forever preferred_lft forever | ||
− | inet6 fe80::a00:27ff: | + | inet6 fe80::a00:27ff:feaf:6651/64 scope link |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
valid_lft forever preferred_lft forever | valid_lft forever preferred_lft forever | ||
</pre> | </pre> | ||
Line 57: | Line 52: | ||
So in this example we can pick off the ip addresses: | So in this example we can pick off the ip addresses: | ||
− | # eth1 - 172.28.128. | + | # eth1 - 172.28.128.5/24 |
− | + | ||
We'll need to save those for assignment to the VPP interfaces later. | We'll need to save those for assignment to the VPP interfaces later. | ||
Line 75: | Line 69: | ||
pci@0000:00:03.0 eth0 network 82540EM Gigabit Ethernet Controller | pci@0000:00:03.0 eth0 network 82540EM Gigabit Ethernet Controller | ||
pci@0000:00:08.0 eth1 network 82540EM Gigabit Ethernet Controller | pci@0000:00:08.0 eth1 network 82540EM Gigabit Ethernet Controller | ||
− | |||
</pre> | </pre> | ||
Line 81: | Line 74: | ||
# eth1 - 0000:00:08.0 | # eth1 - 0000:00:08.0 | ||
− | |||
=== Edit startup.conf === | === Edit startup.conf === | ||
− | To configure VPP to use eth1 | + | To configure VPP to use eth1 using DPDK, edit |
<pre> | <pre> | ||
Line 97: | Line 89: | ||
socket-mem 1024 | socket-mem 1024 | ||
dev 0000:00:08.0 | dev 0000:00:08.0 | ||
− | |||
} | } | ||
</pre> | </pre> | ||
Line 106: | Line 97: | ||
<pre> | <pre> | ||
sudo restart vpp | sudo restart vpp | ||
+ | </pre> | ||
+ | |||
+ | === Troubleshooting === | ||
+ | |||
+ | 1. PCI interfaces are not detected, do not show up in "show interface" of vpp or you see messages like the following | ||
+ | when VPP is started: | ||
+ | |||
+ | 0: dpdk_lib_init:308: DPDK drivers found no ports... | ||
+ | |||
+ | 0: dpdk_lib_init:312: DPDK drivers found 0 ports... | ||
+ | |||
+ | 1.1. Check if the interface you are trying to use is up/configured for use by the Linux kernel. If it is then shut it down: | ||
+ | For e.g. If you want to use eth1 in vpp then: | ||
+ | <pre> | ||
+ | # ifconfig eth1 down | ||
+ | # ip addr flush dev eth1 | ||
+ | </pre> | ||
+ | |||
+ | Restart VPP. | ||
+ | |||
+ | 1.2. If the interface is down and unconfigured but does not show up in VPP, check the output of "show pci" in VPP: | ||
+ | <pre> | ||
+ | vpp# show pci | ||
+ | Address Socket VID:PID Link Speed Driver Product Name | ||
+ | 0000:08:00.0 0 1137:0043 5.0 GT/s x16 | ||
+ | </pre> | ||
+ | |||
+ | Load igb_uio driver manually or using DKMS and restart VPP: | ||
+ | |||
+ | <pre> | ||
+ | # modprobe igb_uio | ||
+ | |||
+ | ..Restart VPP.. | ||
+ | |||
+ | vpp# show pci | ||
+ | Address Socket VID:PID Link Speed Driver Product Name | ||
+ | 0000:08:00.0 0 1137:0043 5.0 GT/s x16 igb_uio | ||
+ | |||
+ | vpp# show int | ||
+ | Name Idx State Counter Count | ||
+ | TenGigabitEthernet8/0/0 1 down | ||
</pre> | </pre> | ||
Line 115: | Line 147: | ||
vagrant@localhost:~$ sudo vppctl show int | vagrant@localhost:~$ sudo vppctl show int | ||
Name Idx State Counter Count | Name Idx State Counter Count | ||
− | GigabitEthernet0/8/0 5 down | + | GigabitEthernet0/8/0 5 down |
− | + | ||
local0 0 down | local0 0 down | ||
pg/stream-0 1 down | pg/stream-0 1 down | ||
Line 127: | Line 158: | ||
# GigabitEthernet0/8/0 - corresponding to PCI address 0000:00:08.0 which corresponds to eth1 | # GigabitEthernet0/8/0 - corresponding to PCI address 0000:00:08.0 which corresponds to eth1 | ||
− | |||
=== Assigning IP address to VPP interfaces === | === Assigning IP address to VPP interfaces === | ||
<pre> | <pre> | ||
− | vagrant@localhost:~$ sudo vppctl set int ip address GigabitEthernet0/8/0 172.28.128. | + | vagrant@localhost:~$ sudo vppctl set int ip address GigabitEthernet0/8/0 172.28.128.5/24 |
− | vagrant@localhost:~$ sudo vppctl set int | + | </pre> |
+ | <pre> | ||
+ | vagrant@localhost:~$ sudo vppctl set interface state GigabitEthernet0/8/0 up | ||
+ | </pre> | ||
+ | |||
+ | |||
+ | To see that assignment | ||
+ | |||
+ | <pre> | ||
+ | vagrant@localhost:~$ sudo vppctl show int address | ||
+ | GigabitEthernet0/8/0 (up): | ||
+ | 172.28.128.5/24 | ||
+ | local0 (dn): | ||
+ | pg/stream-0 (dn): | ||
+ | pg/stream-1 (dn): | ||
+ | pg/stream-2 (dn): | ||
+ | pg/stream-3 (dn): | ||
+ | </pre> | ||
+ | |||
+ | === Setup trace (optional) === | ||
+ | |||
+ | To set up a trace: | ||
+ | |||
+ | <pre> | ||
+ | vagrant@localhost:~$ sudo vppctl trace add dpdk-input 10 | ||
+ | </pre> | ||
+ | |||
+ | === Ping from host === | ||
+ | From your host: | ||
+ | |||
+ | <pre> | ||
+ | ping -c 1 172.28.128.5 | ||
+ | PING 172.28.128.5 (172.28.128.5): 56 data bytes | ||
+ | 64 bytes from 172.28.128.5: icmp_seq=0 ttl=64 time=0.835 ms | ||
+ | |||
+ | --- 172.28.128.5 ping statistics --- | ||
+ | 1 packets transmitted, 1 packets received, 0.0% packet loss | ||
+ | round-trip min/avg/max/stddev = 0.835/0.835/0.835/0.000 ms | ||
+ | </pre> | ||
+ | |||
+ | === Show trace === | ||
+ | |||
+ | <pre> | ||
+ | vagrant@localhost:~$ sudo vppctl show trace | ||
+ | ------------------- Start of thread 0 vpp_main ------------------- | ||
+ | Packet 1 | ||
+ | |||
+ | 00:02:15:410299: dpdk-input | ||
+ | GigabitEthernet0/8/0 rx queue 0 | ||
+ | buffer 0xae87: current data 0, length 60, free-list 0, totlen-nifb 0, trace 0x0 | ||
+ | PKT MBUF: port 0, nb_segs 1, pkt_len 60 | ||
+ | buf_len 2304, data_len 60, ol_flags 0x0, | ||
+ | packet_type 0x0 | ||
+ | ARP: 0a:00:27:00:00:05 -> ff:ff:ff:ff:ff:ff | ||
+ | request, type ethernet/IP4, address size 6/4 | ||
+ | 0a:00:27:00:00:05/172.28.128.1 -> 00:00:00:00:00:00/172.28.128.5 | ||
+ | 00:02:15:410461: ethernet-input | ||
+ | ARP: 0a:00:27:00:00:05 -> ff:ff:ff:ff:ff:ff | ||
+ | 00:02:15:410489: arp-input | ||
+ | request, type ethernet/IP4, address size 6/4 | ||
+ | 0a:00:27:00:00:05/172.28.128.1 -> 00:00:00:00:00:00/172.28.128.5 | ||
+ | 00:02:15:410569: GigabitEthernet0/8/0-output | ||
+ | GigabitEthernet0/8/0 | ||
+ | ARP: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 | ||
+ | reply, type ethernet/IP4, address size 6/4 | ||
+ | 08:00:27:af:66:51/172.28.128.5 -> 0a:00:27:00:00:05/172.28.128.1 | ||
+ | 00:02:15:410576: GigabitEthernet0/8/0-tx | ||
+ | GigabitEthernet0/8/0 tx queue 0 | ||
+ | buffer 0xae87: current data 0, length 60, free-list 0, totlen-nifb 0, trace 0x0 | ||
+ | ARP: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 | ||
+ | reply, type ethernet/IP4, address size 6/4 | ||
+ | 08:00:27:af:66:51/172.28.128.5 -> 0a:00:27:00:00:05/172.28.128.1 | ||
+ | |||
+ | Packet 2 | ||
+ | |||
+ | 00:02:15:410719: dpdk-input | ||
+ | GigabitEthernet0/8/0 rx queue 0 | ||
+ | buffer 0xae60: current data 0, length 98, free-list 0, totlen-nifb 0, trace 0x1 | ||
+ | PKT MBUF: port 0, nb_segs 1, pkt_len 98 | ||
+ | buf_len 2304, data_len 98, ol_flags 0x0, | ||
+ | packet_type 0x0 | ||
+ | IP4: 0a:00:27:00:00:05 -> 08:00:27:af:66:51 | ||
+ | ICMP: 172.28.128.1 -> 172.28.128.5 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0xc442 | ||
+ | fragment id 0x5e27 | ||
+ | ICMP echo_request checksum 0xabfe | ||
+ | 00:02:15:410774: ethernet-input | ||
+ | IP4: 0a:00:27:00:00:05 -> 08:00:27:af:66:51 | ||
+ | 00:02:15:410782: ip4-input | ||
+ | ICMP: 172.28.128.1 -> 172.28.128.5 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0xc442 | ||
+ | fragment id 0x5e27 | ||
+ | ICMP echo_request checksum 0xabfe | ||
+ | 00:02:15:410799: ip4-local | ||
+ | fib: 0 adjacency: local 172.28.128.5/24 flow hash: 0x00000000 | ||
+ | 00:02:15:410805: ip4-icmp-input | ||
+ | ICMP: 172.28.128.1 -> 172.28.128.5 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0xc442 | ||
+ | fragment id 0x5e27 | ||
+ | ICMP echo_request checksum 0xabfe | ||
+ | 00:02:15:410811: ip4-icmp-echo-request | ||
+ | ICMP: 172.28.128.1 -> 172.28.128.5 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0xc442 | ||
+ | fragment id 0x5e27 | ||
+ | ICMP echo_request checksum 0xabfe | ||
+ | 00:02:15:410824: ip4-rewrite-local | ||
+ | fib: 0 adjacency: GigabitEthernet0/8/0 | ||
+ | IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 flow hash: 0x00000000 | ||
+ | IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 | ||
+ | ICMP: 172.28.128.5 -> 172.28.128.1 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0x98d9 | ||
+ | fragment id 0x8990 | ||
+ | ICMP echo_reply checksum 0xb3fe | ||
+ | 00:02:15:410827: GigabitEthernet0/8/0-output | ||
+ | GigabitEthernet0/8/0 | ||
+ | IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 | ||
+ | ICMP: 172.28.128.5 -> 172.28.128.1 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0x98d9 | ||
+ | fragment id 0x8990 | ||
+ | ICMP echo_reply checksum 0xb3fe | ||
+ | 00:02:15:410830: GigabitEthernet0/8/0-tx | ||
+ | GigabitEthernet0/8/0 tx queue 0 | ||
+ | buffer 0xae60: current data 0, length 98, free-list 0, totlen-nifb 0, trace 0x1 | ||
+ | IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 | ||
+ | ICMP: 172.28.128.5 -> 172.28.128.1 | ||
+ | tos 0x00, ttl 64, length 84, checksum 0x98d9 | ||
+ | fragment id 0x8990 | ||
+ | ICMP echo_reply checksum 0xb3fe | ||
+ | |||
+ | </pre> | ||
+ | |||
+ | === Clear trace === | ||
+ | <pre> | ||
+ | vagrant@localhost:~$ sudo vppctl clear trace | ||
</pre> | </pre> |
Latest revision as of 04:56, 28 October 2016
Contents
[hide]Introduction
In this tutorial you will learn how to connect a PCI interface to VPP.
Starting from Setting Up Your Dev Environment
You can try this exercise using the Vagrant file provided in vpp/build-root/vagrant . To get started there, go to Setting Up Your Dev Environment (if you have not already).
Setting the number of NICs
Once you can get this Vagrant working, set the environment variable VPP_VAGRANT_NICS to the number of additional NICs you would like, in this tutorial, we will use the example of 1 additional NIC.
Example:
VPP_VAGRANT_NICS=1
If you have already created a VM for this Vagrant, you will need to destroy and recreate it for the changes to take effect:
export vagrant destroy -f;vagrant up
Capturing the IP information
The Vagrant sets up additional NICs as 'DHCP'. This means they get an IP assigned by DHCP. You are going to want to capture the information about them so you can interact with the network they are connected to correctly.
Example:
vagrant@localhost:~$ ip address 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:b1:94:b1 brd ff:ff:ff:ff:ff:ff inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:feb1:94b1/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:af:66:51 brd ff:ff:ff:ff:ff:ff inet 172.28.128.5/24 brd 172.28.128.255 scope global eth1 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:feaf:6651/64 scope link valid_lft forever preferred_lft forever
So in this example we can pick off the ip addresses:
- eth1 - 172.28.128.5/24
We'll need to save those for assignment to the VPP interfaces later.
Configuring VPP to use the additional NICs
Getting PCI information for additional NICs
To 'whitelist' an interface with VPP (ie, tell it to grab that NIC) we need to first find the interfaces PCI address.
Example:
vagrant@localhost:~$ sudo lshw -class network -businfo Bus info Device Class Description =================================================== pci@0000:00:03.0 eth0 network 82540EM Gigabit Ethernet Controller pci@0000:00:08.0 eth1 network 82540EM Gigabit Ethernet Controller
In this case we can see:
- eth1 - 0000:00:08.0
Edit startup.conf
To configure VPP to use eth1 using DPDK, edit
/etc/vpp/startup.conf
And change its dpdk section to contain 'dev' entries for the PCI bus information you captured in the previous step.
Example:
dpdk { socket-mem 1024 dev 0000:00:08.0 }
Restart VPP
Restart VPP
sudo restart vpp
Troubleshooting
1. PCI interfaces are not detected, do not show up in "show interface" of vpp or you see messages like the following when VPP is started:
0: dpdk_lib_init:308: DPDK drivers found no ports...
0: dpdk_lib_init:312: DPDK drivers found 0 ports...
1.1. Check if the interface you are trying to use is up/configured for use by the Linux kernel. If it is then shut it down: For e.g. If you want to use eth1 in vpp then:
# ifconfig eth1 down # ip addr flush dev eth1
Restart VPP.
1.2. If the interface is down and unconfigured but does not show up in VPP, check the output of "show pci" in VPP:
vpp# show pci Address Socket VID:PID Link Speed Driver Product Name 0000:08:00.0 0 1137:0043 5.0 GT/s x16
Load igb_uio driver manually or using DKMS and restart VPP:
# modprobe igb_uio ..Restart VPP.. vpp# show pci Address Socket VID:PID Link Speed Driver Product Name 0000:08:00.0 0 1137:0043 5.0 GT/s x16 igb_uio vpp# show int Name Idx State Counter Count TenGigabitEthernet8/0/0 1 down
Taking your new NICs for a spin
Seeing new VPP NICs
vagrant@localhost:~$ sudo vppctl show int Name Idx State Counter Count GigabitEthernet0/8/0 5 down local0 0 down pg/stream-0 1 down pg/stream-1 2 down pg/stream-2 3 down pg/stream-3 4 down
You can see the new interfaces:
- GigabitEthernet0/8/0 - corresponding to PCI address 0000:00:08.0 which corresponds to eth1
Assigning IP address to VPP interfaces
vagrant@localhost:~$ sudo vppctl set int ip address GigabitEthernet0/8/0 172.28.128.5/24
vagrant@localhost:~$ sudo vppctl set interface state GigabitEthernet0/8/0 up
To see that assignment
vagrant@localhost:~$ sudo vppctl show int address GigabitEthernet0/8/0 (up): 172.28.128.5/24 local0 (dn): pg/stream-0 (dn): pg/stream-1 (dn): pg/stream-2 (dn): pg/stream-3 (dn):
Setup trace (optional)
To set up a trace:
vagrant@localhost:~$ sudo vppctl trace add dpdk-input 10
Ping from host
From your host:
ping -c 1 172.28.128.5 PING 172.28.128.5 (172.28.128.5): 56 data bytes 64 bytes from 172.28.128.5: icmp_seq=0 ttl=64 time=0.835 ms --- 172.28.128.5 ping statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 0.835/0.835/0.835/0.000 ms
Show trace
vagrant@localhost:~$ sudo vppctl show trace ------------------- Start of thread 0 vpp_main ------------------- Packet 1 00:02:15:410299: dpdk-input GigabitEthernet0/8/0 rx queue 0 buffer 0xae87: current data 0, length 60, free-list 0, totlen-nifb 0, trace 0x0 PKT MBUF: port 0, nb_segs 1, pkt_len 60 buf_len 2304, data_len 60, ol_flags 0x0, packet_type 0x0 ARP: 0a:00:27:00:00:05 -> ff:ff:ff:ff:ff:ff request, type ethernet/IP4, address size 6/4 0a:00:27:00:00:05/172.28.128.1 -> 00:00:00:00:00:00/172.28.128.5 00:02:15:410461: ethernet-input ARP: 0a:00:27:00:00:05 -> ff:ff:ff:ff:ff:ff 00:02:15:410489: arp-input request, type ethernet/IP4, address size 6/4 0a:00:27:00:00:05/172.28.128.1 -> 00:00:00:00:00:00/172.28.128.5 00:02:15:410569: GigabitEthernet0/8/0-output GigabitEthernet0/8/0 ARP: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 reply, type ethernet/IP4, address size 6/4 08:00:27:af:66:51/172.28.128.5 -> 0a:00:27:00:00:05/172.28.128.1 00:02:15:410576: GigabitEthernet0/8/0-tx GigabitEthernet0/8/0 tx queue 0 buffer 0xae87: current data 0, length 60, free-list 0, totlen-nifb 0, trace 0x0 ARP: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 reply, type ethernet/IP4, address size 6/4 08:00:27:af:66:51/172.28.128.5 -> 0a:00:27:00:00:05/172.28.128.1 Packet 2 00:02:15:410719: dpdk-input GigabitEthernet0/8/0 rx queue 0 buffer 0xae60: current data 0, length 98, free-list 0, totlen-nifb 0, trace 0x1 PKT MBUF: port 0, nb_segs 1, pkt_len 98 buf_len 2304, data_len 98, ol_flags 0x0, packet_type 0x0 IP4: 0a:00:27:00:00:05 -> 08:00:27:af:66:51 ICMP: 172.28.128.1 -> 172.28.128.5 tos 0x00, ttl 64, length 84, checksum 0xc442 fragment id 0x5e27 ICMP echo_request checksum 0xabfe 00:02:15:410774: ethernet-input IP4: 0a:00:27:00:00:05 -> 08:00:27:af:66:51 00:02:15:410782: ip4-input ICMP: 172.28.128.1 -> 172.28.128.5 tos 0x00, ttl 64, length 84, checksum 0xc442 fragment id 0x5e27 ICMP echo_request checksum 0xabfe 00:02:15:410799: ip4-local fib: 0 adjacency: local 172.28.128.5/24 flow hash: 0x00000000 00:02:15:410805: ip4-icmp-input ICMP: 172.28.128.1 -> 172.28.128.5 tos 0x00, ttl 64, length 84, checksum 0xc442 fragment id 0x5e27 ICMP echo_request checksum 0xabfe 00:02:15:410811: ip4-icmp-echo-request ICMP: 172.28.128.1 -> 172.28.128.5 tos 0x00, ttl 64, length 84, checksum 0xc442 fragment id 0x5e27 ICMP echo_request checksum 0xabfe 00:02:15:410824: ip4-rewrite-local fib: 0 adjacency: GigabitEthernet0/8/0 IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 flow hash: 0x00000000 IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 ICMP: 172.28.128.5 -> 172.28.128.1 tos 0x00, ttl 64, length 84, checksum 0x98d9 fragment id 0x8990 ICMP echo_reply checksum 0xb3fe 00:02:15:410827: GigabitEthernet0/8/0-output GigabitEthernet0/8/0 IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 ICMP: 172.28.128.5 -> 172.28.128.1 tos 0x00, ttl 64, length 84, checksum 0x98d9 fragment id 0x8990 ICMP echo_reply checksum 0xb3fe 00:02:15:410830: GigabitEthernet0/8/0-tx GigabitEthernet0/8/0 tx queue 0 buffer 0xae60: current data 0, length 98, free-list 0, totlen-nifb 0, trace 0x1 IP4: 08:00:27:af:66:51 -> 0a:00:27:00:00:05 ICMP: 172.28.128.5 -> 172.28.128.1 tos 0x00, ttl 64, length 84, checksum 0x98d9 fragment id 0x8990 ICMP echo_reply checksum 0xb3fe
Clear trace
vagrant@localhost:~$ sudo vppctl clear trace