Difference between revisions of "VPP/Pure L3 Container Networking"
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| − | This example shows how to configure VPP as an IPv4 router interconnecting containers across | + | This example shows how to configure VPP as an IPv4 router interconnecting containers across two hosts. |
VPP itself runs in the root namespace, with a separate namespace for each container. | VPP itself runs in the root namespace, with a separate namespace for each container. | ||
[[File:Vpp-container.pdf|thumb|test network diagram]] | [[File:Vpp-container.pdf|thumb|test network diagram]] | ||
| + | |||
| + | The basic setup is to use static ARPs and to unnumber the host interfaces from a loopback. From that perspective this is a hybrid of Methods 1 and 2 from [[Pure_L3_Between_Namespaces_with_/32s]] | ||
= Network Setup = | = Network Setup = | ||
| − | The | + | The two hosts are interconnected by a router. The router has /24 routes for the client subnets - pointed at the appropriate vSwitch interfaces. |
| − | [[File: | + | |
| + | [[File:vpp-container.pdf]] | ||
= Host Setup = | = Host Setup = | ||
| Line 14: | Line 17: | ||
On each host do: | On each host do: | ||
| − | <code>sudo docker create -e MICROSERVICE_LABEL=vpp -it --privileged -v "/tmp/vpp_socket:/tmp" -p 5001:5002 -p 9191:9191 --name vpp --network=host contivvpp/vswitch</code> | + | <code> |
| + | sudo docker create -e MICROSERVICE_LABEL=vpp -it --privileged -v "/tmp/vpp_socket:/tmp" -p 5001:5002 -p 9191:9191 --name vpp --network=host contivvpp/vswitch | ||
| + | </code> | ||
create file vpp.conf as follows: | create file vpp.conf as follows: | ||
<code> | <code> | ||
| − | unix { | + | unix { |
| − | + | nodaemon | |
| − | + | cli-listen 0.0.0.0:5002 | |
| − | + | cli-no-pager | |
| − | } | + | } |
| − | dpdk { | + | dpdk { |
| − | + | dev 0000:09:00.0 # replace this with an Ethernet interface on your host | |
| − | + | uio-driver igb_uio | |
| − | } | + | } |
</code> | </code> | ||
then: | then: | ||
<code> | <code> | ||
| − | + | sudo docker cp vpp.conf vpp:/etc/vpp/vpp.conf | |
| − | + | sudo docker create -it --name client ubuntu | |
</code> | </code> | ||
| Line 43: | Line 48: | ||
<code> | <code> | ||
| − | + | sudo docker start vpp client | |
| − | + | export pid="$(sudo docker inspect -f '{{.State.Pid}}' "client")" | |
| − | + | sudo ln -sf /proc/$pid/ns/net /var/run/netns/client | |
| − | + | sudo ip link add name veth_client type veth peer name client | |
| − | + | sudo ip link set dev client up | |
| − | + | sudo ip link set dev veth_client up netns client | |
| − | + | export mac="$(sudo docker exec client ifconfig veth_client | awk 'NR==1{print $5}')" | |
| − | + | echo $mac | |
| − | + | export vmac="$(printf ' | |
| − | + | set int ip address GigabitEthernet1/0/0 192.168.101.1/24\n | |
| − | + | set int state GigabitEthernet1/0/0 up\n | |
| − | + | create loopback interface\n | |
| − | + | set int ip address loop0 192.168.200.1/24\n | |
| − | + | set int state loop0 up\n | |
| − | + | create host-interface name client\n | |
| − | + | set int unnumbered host-client use loop0\n | |
| − | + | set ip arp host-client 192.168.200.2 MAC\n | |
| − | + | set int state host-client up\n | |
| − | + | ip route add 192.168.200.2/32 via 192.168.200.2 host-client\n | |
| − | + | ip route add 192.168.0.0/16 via 192.168.101.254 GigabitEthernet1/0/0\n | |
| − | + | show hardware-interfaces host-client\n | |
| − | + | quit' | sed s/MAC/$mac/ | nc 0 5002 | awk 'NR==29{print $3}')" | |
| − | + | echo $vmac | |
| − | + | sudo ip netns exec client ip link set dev lo up | |
| − | + | sudo ip netns exec client ip addr add 192.168.200.2/32 dev veth_client | |
| − | + | sudo ip netns exec client ip neigh add 192.168.200.1 lladdr $vmac dev veth_client | |
| − | + | sudo ip netns exec client ip route add 192.168.200.1 dev veth_client scope link | |
| − | + | sudo ip netns exec client ip route add 192.168.0.0/16 via 192.168.200.1 dev veth_client | |
| − | + | sudo ip netns exec client ip route add 1.2.3.4/32 via 192.168.200.1 dev veth_client | |
| − | + | sudo docker exec client ping -c 1 192.168.200.1 | |
</code> | </code> | ||
| Line 82: | Line 87: | ||
<code> | <code> | ||
| − | + | sudo docker start vpp server | |
| − | + | export pid="$(sudo docker inspect -f '{{.State.Pid}}' "server")" | |
| − | + | sudo ln -sf /proc/$pid/ns/net /var/run/netns/server | |
| − | + | sudo ip link add name veth_server type veth peer name server | |
| − | + | sudo ip link set dev server up | |
| − | + | sudo ip link set dev veth_server up netns server | |
| − | + | export mac="$(sudo docker exec server ifconfig veth_server | awk 'NR==1{print $5}')" | |
| − | + | echo $mac | |
| − | + | export vmac="$(printf ' | |
| − | + | set int ip address GigabitEthernet1/0/0 192.168.103.1/24\n | |
| − | + | set int state GigabitEthernet1/0/0 up\n | |
| − | + | create loopback interface\n | |
| − | + | set int ip address loop0 192.168.204.1/24\n | |
| − | + | set int state loop0 up\n | |
| − | + | create host-interface name server\n | |
| − | + | set int unnumbered host-server use loop0\n | |
| − | + | set ip arp host-server 192.168.204.2 MAC\n | |
| − | + | set int state host-server up\n | |
| − | + | ip route add 192.168.204.2/32 via 192.168.204.2 host-server\n | |
| − | + | ip route add 192.168.0.0/16 via 192.168.103.254 GigabitEthernet1/0/0\n | |
| − | + | show hardware-interfaces host-server\n | |
| − | + | quit' | sed s/MAC/$mac/ | nc 0 5002 | awk 'NR==29{print $3}')" | |
| − | + | echo $vmac | |
| − | + | sudo ip netns exec server ip link set dev lo up | |
| − | + | sudo ip netns exec server ip addr add 192.168.204.2/32 dev veth_server | |
| − | + | sudo ip netns exec server ip neigh add 192.168.204.1 lladdr $vmac dev veth_server | |
| − | + | sudo ip netns exec server ip route add 192.168.204.1 dev veth_server scope link | |
| − | + | sudo ip netns exec server ip route add 192.168.0.0/16 via 192.168.204.1 dev veth_server | |
| − | + | sudo docker exec server ping -c 1 192.168.204.1 | |
</code> | </code> | ||
again the ping should succeed | again the ping should succeed | ||
Latest revision as of 15:51, 25 October 2017
This example shows how to configure VPP as an IPv4 router interconnecting containers across two hosts.
VPP itself runs in the root namespace, with a separate namespace for each container.
The basic setup is to use static ARPs and to unnumber the host interfaces from a loopback. From that perspective this is a hybrid of Methods 1 and 2 from Pure_L3_Between_Namespaces_with_/32s
Network Setup
The two hosts are interconnected by a router. The router has /24 routes for the client subnets - pointed at the appropriate vSwitch interfaces.
Host Setup
On each host do:
sudo docker create -e MICROSERVICE_LABEL=vpp -it --privileged -v "/tmp/vpp_socket:/tmp" -p 5001:5002 -p 9191:9191 --name vpp --network=host contivvpp/vswitch
create file vpp.conf as follows:
unix {
nodaemon
cli-listen 0.0.0.0:5002
cli-no-pager
}
dpdk {
dev 0000:09:00.0 # replace this with an Ethernet interface on your host
uio-driver igb_uio
}
then:
sudo docker cp vpp.conf vpp:/etc/vpp/vpp.conf
sudo docker create -it --name client ubuntu
(for the server host change the name to "server")
Client-Side Setup
from the Linux command line:
sudo docker start vpp client
export pid="$(sudo docker inspect -f 'Template:.State.Pid' "client")"
sudo ln -sf /proc/$pid/ns/net /var/run/netns/client
sudo ip link add name veth_client type veth peer name client
sudo ip link set dev client up
sudo ip link set dev veth_client up netns client
export mac="$(sudo docker exec client ifconfig veth_client | awk 'NR==1{print $5}')"
echo $mac
export vmac="$(printf '
set int ip address GigabitEthernet1/0/0 192.168.101.1/24\n
set int state GigabitEthernet1/0/0 up\n
create loopback interface\n
set int ip address loop0 192.168.200.1/24\n
set int state loop0 up\n
create host-interface name client\n
set int unnumbered host-client use loop0\n
set ip arp host-client 192.168.200.2 MAC\n
set int state host-client up\n
ip route add 192.168.200.2/32 via 192.168.200.2 host-client\n
ip route add 192.168.0.0/16 via 192.168.101.254 GigabitEthernet1/0/0\n
show hardware-interfaces host-client\n
quit' | sed s/MAC/$mac/ | nc 0 5002 | awk 'NR==29{print $3}')"
echo $vmac
sudo ip netns exec client ip link set dev lo up
sudo ip netns exec client ip addr add 192.168.200.2/32 dev veth_client
sudo ip netns exec client ip neigh add 192.168.200.1 lladdr $vmac dev veth_client
sudo ip netns exec client ip route add 192.168.200.1 dev veth_client scope link
sudo ip netns exec client ip route add 192.168.0.0/16 via 192.168.200.1 dev veth_client
sudo ip netns exec client ip route add 1.2.3.4/32 via 192.168.200.1 dev veth_client
sudo docker exec client ping -c 1 192.168.200.1
the ping should succeed
Server-Side Setup
Again from the Linux command line:
sudo docker start vpp server
export pid="$(sudo docker inspect -f 'Template:.State.Pid' "server")"
sudo ln -sf /proc/$pid/ns/net /var/run/netns/server
sudo ip link add name veth_server type veth peer name server
sudo ip link set dev server up
sudo ip link set dev veth_server up netns server
export mac="$(sudo docker exec server ifconfig veth_server | awk 'NR==1{print $5}')"
echo $mac
export vmac="$(printf '
set int ip address GigabitEthernet1/0/0 192.168.103.1/24\n
set int state GigabitEthernet1/0/0 up\n
create loopback interface\n
set int ip address loop0 192.168.204.1/24\n
set int state loop0 up\n
create host-interface name server\n
set int unnumbered host-server use loop0\n
set ip arp host-server 192.168.204.2 MAC\n
set int state host-server up\n
ip route add 192.168.204.2/32 via 192.168.204.2 host-server\n
ip route add 192.168.0.0/16 via 192.168.103.254 GigabitEthernet1/0/0\n
show hardware-interfaces host-server\n
quit' | sed s/MAC/$mac/ | nc 0 5002 | awk 'NR==29{print $3}')"
echo $vmac
sudo ip netns exec server ip link set dev lo up
sudo ip netns exec server ip addr add 192.168.204.2/32 dev veth_server
sudo ip netns exec server ip neigh add 192.168.204.1 lladdr $vmac dev veth_server
sudo ip netns exec server ip route add 192.168.204.1 dev veth_server scope link
sudo ip netns exec server ip route add 192.168.0.0/16 via 192.168.204.1 dev veth_server
sudo docker exec server ping -c 1 192.168.204.1
again the ping should succeed
