[GRE] How to create gre environment - method 2

[GRE] How to create gre environment - method 2

===== VM1 =====

ip link add gretap0 type gretap local 111.2.1.31 remote 111.2.1.130

ip link set dev gretap0 up

ip link set dev eth2 up

brctl addbr br0

brctl addif br0 gretap0

brctl addif br0 eth2

ip addr add 10.10.10.2/24 dev br0

ip link set br0 up



===== VM2 =====

ip link add gretap0 type gretap local 111.2.1.130 remote 111.2.1.31

ip link set dev gretap0 up

ip link set dev eth3 up

brctl addbr br0

brctl addif br0 gretap0

brctl addif br0 eth3

ip addr add 10.10.10.1/24 dev br0

ip link set br0 up



===== Experiment =====

==== Test 1 ====

ping 10.10.10.1 to 10.10.10.2 (OK)



==== Test 2 ====

Assign eth2 of VM1 = 192.168.1.10

Assign eth3 of VM2 = 192.168.1.1



Type follow command at VM1

route add -net 192.168.1.0 netmask 255.255.255.0 dev br0



ping 192.168.1.1 to 192.168.1.10 (OK)

File :

Wireshark file download



Reference:

• 
  Layer 2 over Layer 3 using Linux built-in features