Hi Team,
I am trying to test GRE tunnel on VPP.
SETUP is
Host 1 --------------------Sever1 ------------------server2
-------------------host2
[20.0.0.x/24] [43.0.0.x/24]
[10.0.0.x/24]
GRE TUNNEL is configured between Server1 and Server2 .
Router 1:
=======
#create namespaces
ip netns add vpp1
# create and configure 1st veth pair
ip link add name veth_vpp1 type veth peer name vpp1
ip link set dev vpp1 up
ip link set dev veth_vpp1 up netns vpp1
ip netns exec vpp1 \
bash -c "
ip link set dev lo up
ip addr add 20.20.20.100/24 dev veth_vpp1
ip route add 0.0.0.0/0 via 20.20.20.1
"
VPP_SIDE CONFIGS
===============
vppctl -s /run/vpp/cli-vpp1.sock create host-interface name vpp1
vppctl -s /run/vpp/cli-vpp1.sock set int state host-vpp1 up
vppctl -s /run/vpp/cli-vpp1.sock set int ip address host-vpp1 20.20.20.1/24
vppctl -s /run/vpp/cli-vpp1.sock ping 20.20.20.100
vppctl -s /run/vpp/cli-vpp1.sock show ip neighbors
vppctl -s /run/vpp/cli-vpp1.sock set int state TenGigabitEthernet1/0/1 up
vppctl -s /run/vpp/cli-vpp1.sock set int ip address TenGigabitEthernet1/0/1
43.0.0.1/24
vppctl -s /run/vpp/cli-vpp1.sock show interface address
vppctl -s /run/vpp/cli-vpp1.sock loopback create mac 1a:ab:3c:4d:5e:7f
vppctl -s /run/vpp/cli-vpp1.sock set interface ip address loop0 10.100.0.7/31
vppctl -s /run/vpp/cli-vpp1.sock set int mtu 1360 loop0
vppctl -s /run/vpp/cli-vpp1.sock create gre tunnel src 10.100.0.7 dst
10.100.0.6
vppctl -s /run/vpp/cli-vpp1.sock set int state gre0 up
vppctl -s /run/vpp/cli-vpp1.sock ip route add 10.10.10.0/24 via 10.100.0.6
vppctl -s /run/vpp/cli-vpp1.sock ip route add 10.100.0.0/24 via 43.0.0.2
On server 2:
==========
ip netns del vpp1
#create namespaces
ip netns add vpp1
# create and configure 1st veth pair
ip link add name veth_vpp1 type veth peer name vpp1
ip link set dev vpp1 up
ip link set dev veth_vpp1 up netns vpp1
ip netns exec vpp1 \
bash -c "
ip link set dev lo up
ip addr add 10.10.10.100/24 dev veth_vpp1
ip route add 0.0.0.0/0 via 10.10.10.1
"
VPP_SIDE CONFIGS
===============
vppctl -s /run/vpp/cli-vpp1.sock create host-interface name vpp1
vppctl -s /run/vpp/cli-vpp1.sock set int state host-vpp1 up
vppctl -s /run/vpp/cli-vpp1.sock set int ip address host-vpp1 10.10.10.1/24
vppctl -s /run/vpp/cli-vpp1.sock ping 10.10.10.100
vppctl -s /run/vpp/cli-vpp1.sock show ip neighbors
vppctl -s /run/vpp/cli-vpp1.sock set int state TenGigabitEthernet1/0/1 up
vppctl -s /run/vpp/cli-vpp1.sock set int ip address TenGigabitEthernet1/0/1
43.0.0.2/24
vppctl -s /run/vpp/cli-vpp1.sock show interface address
vppctl -s /run/vpp/cli-vpp1.sock loopback create mac 1a:2b:3c:4d:5e:7f
vppctl -s /run/vpp/cli-vpp1.sock set interface ip address loop0 10.100.0.6/31
vppctl -s /run/vpp/cli-vpp1.sock set int mtu 1360 loop0
vppctl -s /run/vpp/cli-vpp1.sock create gre tunnel src 10.100.0.6 dst
10.100.0.7
vppctl -s /run/vpp/cli-vpp1.sock set int state gre0 up
vppctl -s /run/vpp/cli-vpp1.sock ip route add 20.20.20.0/24 via 10.100.0.7
vppctl -s /run/vpp/cli-vpp1.sock ip route add 10.100.0.0/24 via 43.0.0.1
Kindly let me know if I am doing it correctly.
>From FIB entries in server1 and server2, next hop is not Tunnel .
Regards,
Archana
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