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metadata:
name: IP forwarding
format: "Manual Test Definition 1.0"
description: "Test if Kernel IP forwarding works."
maintainer:
- chase.qi@linaro.org
os:
- debian
- centos
scope:
- functional
devices:
- d02
- overdrive
environment:
- manual-test
run:
steps:
- SUT(system under test) should has at least two Ethernet ports. Assume you use SUT_eth0 and SUT_eth1 here.
- Make sure iptables package installed on SUT.
- Boot SUT and test client to OS.
- Run "sudo su -" to switch to root user.
- Run "ip addr show" to check if the ports used for testing are detected.
- Do the following steps on SUT to set test environment and enable ip_forward.
- Connect SUT_eth1 to router0 that connected to internet. Assume the gateway IP is 10.0.0.1.
- Connect SUT_eth0 to router1 that used for private network.
- Execute "dhclient eth1" to get a IP address or set IP for it manually.
- Execute "ping -I eth1 10.0.0.1" and "ping -I eth1 8.8.8.8" to check if eth1 is set properly.
- "ip link set eth0 down"
- "ip addr add 192.168.1.1/24 dev eth0"
- "ip link set eth0 up"
# Enable ip_forward from Linux Kernel.
- "echo 1 > /proc/sys/net/ipv4/conf/all/forwarding"
# Enable NAT(network address translation)
- "iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE"
- "iptables -A FORWARD -i eth0 -j ACCEPT"
- Do the following steps on test client to test if Kernel IP forwarding works.
- Connect test client eth0 port to the private route1.
- "ip link set eth0 down"
- "ip addr add 192.168.1.2/24 dev eth0"
- "ip link set eth0 up"
- "ip route add default via 192.168.1.1"
- "ping 10.0.0.1"
- "ping 8.8.8.8"
expected:
- ip_forward and NAT can be enabled successfully.
- ping tests from test client to router0 and Google DNS server are successful.
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