Hi all:
I establish a GRE tunnel between two openvswitch on two PC, and the
configuration is as follow:
PC-A(163.22.21.120)
# ovs-vsctl show
Bridge "ovs0"
Controller "tcp:163.22.21.123:6633"
Port "vnet0"
Interface "vnet0"
Port "gre0"
Interface "gre0"
type: gre
options: {key="999", remote_ip="163.22.21.121"}
Port "eth0"
Interface "eth0"
Port "ovs0"
Interface "ovs0"
type: internal
ovs_version: "1.11.0"
PC-B(163.22.21.121)
# ovs-vsctl show
Bridge "ovs0"
Controller "tcp:163.22.21.123:6633"
Port "gre0"
Interface "gre0"
type: gre
options: {key="999", remote_ip="163.22.20.120"}
Port "ovs0"
Interface "ovs0"
type: internal
Port "tap0"
Interface "tap0"
Port "eth0"
Interface "eth0"
ovs_version: "1.11.0"
Both PC-A and PC-B use the same OS(CentOS 6.4) and same Linux kernel
(2.6.32-431.11.2.el6.x86_64).
I write some app to make ovs0 on PC-A send the data from vnet0 to ovs0
on PC-B via GRE tunnel. I am sure that PC-B get the GRE tunnel packet by
using "tcpdump -i eth0 proto gre" in PC-B. However, I don't know how to
match the decapsulated packet then output to port tap0. ( I try to match if
the in_port is gre0's port number or not. But the rule is always not be
hit.)
The following rule is the flow entry in PC-B
# ovs-ofctl dump-flows ovs0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=22.05s, table=0, n_packets=0, n_bytes=0,
idle_age=22, priority=999,in_port=2 actions=output:3
cookie=0x0, duration=22.05s, table=0, n_packets=1773, n_bytes=214020,
idle_age=0, priority=999 actions=NORMAL
Can anyone please tell me how to deal with the decapsulated packet?
Best regards,
Hsiang-Ting,Fang
National Chi Nan University.
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