[ovs-discuss] Ping packets on GRE tunnel are flooded
Rashmi Rashmi
rashmi.ovs at gmail.com
Tue Dec 17 09:00:26 UTC 2013
Hello,
I am using a GRE tunnel with OVS. Here is the setup detail:
+--------------+ eth0 (11.0.0.2) eth1 +----------------+ eth0
eth0 +----------------+
| M1 (Linux) |-------------------------------------| M2 (Linux)
|-----------------------------------------------| M3 (Linux) |
+--------------+ +----------------+ p0
(11.0.0.1) p0 (11.0.0.3) +----------------+
gre0 <============> gre0
I am running OVS (1.9.3) on Machines M2 & M3.
For GRE tunnel between M2 & M3 –
On pinging 11.0.0.3 from M1, the pkts coming out of M2.eth0 interface are
GRE encapsulated. But on machine M3, I see that the single ping-request pkt
is being looped multiple times.
Can someone review the below cfg & help if I am missing something here?
M1:
----------------
root at apteam-Lenovo-B490-2:/home/apteam/OVS# ifconfig
eth0 Link encap:Ethernet HWaddr 3c:97:0e:a6:c5:89
inet addr:11.0.0.2 Bcast:11.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::3e97:eff:fea6:c589/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10771077 errors:0 dropped:0 overruns:0 frame:0
TX packets:7959 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2265409472 (2.2 GB) TX bytes:2061555 (2.0 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:20377 errors:0 dropped:0 overruns:0 frame:0
TX packets:20377 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1669344 (1.6 MB) TX bytes:1669344 (1.6 MB)
root at apteam-Lenovo-B490-2:/home/apteam/OVS#
M2:
----------------
[root at localhost openvswitch-1.9.3]# ifconfig
br0 Link encap:Ethernet HWaddr 00:27:13:B6:B1:5F
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:550319815 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3945022381 (3.6 GiB) TX bytes:0 (0.0 b)
eth0 Link encap:Ethernet HWaddr 00:27:13:B6:B1:5F
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:619055026 errors:0 dropped:191 overruns:0 frame:0
TX packets:607143222 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1520490297 (1.4 GiB) TX bytes:4201294864 (3.9 GiB)
Memory:fc200000-fc220000
eth1 Link encap:Ethernet HWaddr 00:60:6E:00:F1:7D
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7867 errors:0 dropped:0 overruns:0 frame:0
TX packets:11003243 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1941851 (1.8 MiB) TX bytes:2311928285 (2.1 GiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2959 errors:0 dropped:0 overruns:0 frame:0
TX packets:2959 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4473425 (4.2 MiB) TX bytes:4473425 (4.2 MiB)
p0 Link encap:Ethernet HWaddr F2:3B:D3:66:BE:96
inet addr:11.0.0.1 Bcast:11.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:753817857 errors:0 dropped:0 overruns:0 frame:0
TX packets:415536907 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1576897758 (1.4 GiB) TX bytes:2398826800 (2.2 GiB)
[root at localhost openvswitch-1.9.3]# ovs-vsctl show
f28a3611-5ee2-4d30-8412-7c6eae7e9423
Bridge "br0"
Port "eth1"
Interface "eth1"
Port "eth0"
Interface "eth0"
Port "gre0"
Interface "gre0"
type: gre
options: {local_ip="11.0.0.1", remote_ip="11.0.0.3"}
Port "br0"
Interface "br0"
type: internal
Port "p0"
Interface "p0"
type: internal
[root at localhost openvswitch-1.9.3]#
[root at localhost openvswitch-1.9.3]# ovs-dpctl show br0
system at br0:
lookups: hit:1236579158 missed:5278 lost:0
flows: 9
port 0: br0 (internal)
port 1: eth0
port 2: p0 (internal)
port 6: eth1
port 34: gre0 (gre: local_ip=11.0.0.1, remote_ip=11.0.0.3)
[root at localhost openvswitch-1.9.3]#
[root at localhost openvswitch-1.9.3]# ovs-ofctl dump-flows br0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=1868.212s, table=0, n_packets=333264817,
n_bytes=116075574466, idle_age=0, priority=0 actions=NORMAL
cookie=0x0, duration=1723.073s, table=0, n_packets=19, n_bytes=1634,
idle_age=727, in_port=6,dl_src=3c:97:0e:a6:c5:89,dl_dst=c2:1f:f1:90:f0:56
actions=output:34
[root at localhost openvswitch-1.9.3]#
M3:
---------------
[root at localhost openvswitch-1.9.3]# ifconfig
br0 Link encap:Ethernet HWaddr 00:27:13:B6:84:A7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:550320100 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3945091933 (3.6 GiB) TX bytes:0 (0.0 b)
eth0 Link encap:Ethernet HWaddr 00:27:13:B6:84:A7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:612920235 errors:0 dropped:797 overruns:0 frame:0
TX packets:625167972 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3162249238 (2.9 GiB) TX bytes:580379993 (553.4 MiB)
Memory:fc200000-fc220000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2983 errors:0 dropped:0 overruns:0 frame:0
TX packets:2983 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4511260 (4.3 MiB) TX bytes:4511260 (4.3 MiB)
p0 Link encap:Ethernet HWaddr C2:1F:F1:90:F0:56
inet addr:11.0.0.3 Bcast:11.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:946009628 errors:0 dropped:0 overruns:0 frame:0
TX packets:253304644 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4121585916 (3.8 GiB) TX bytes:82815363 (78.9 MiB)
[root at localhost openvswitch-1.9.3]#
[root at localhost openvswitch-1.9.3]# ovs-vsctl show
ec84f0c5-92f4-4893-a098-fa6536d29ae5
Bridge "br0"
Port "p0"
Interface "p0"
type: internal
Port "eth0"
Interface "eth0"
Port "gre0"
Interface "gre0"
type: gre
options: {local_ip="11.0.0.3", remote_ip="11.0.0.1"}
Port "br0"
Interface "br0"
type: internal
[root at localhost openvswitch-1.9.3]#
[root at localhost openvswitch-1.9.3]# ovs-dpctl show br0
system at br0:
lookups: hit:1264730402 missed:2380 lost:0
flows: 8
port 0: br0 (internal)
port 1: eth0
port 2: p0 (internal)
port 26: gre0 (gre: local_ip=11.0.0.3, remote_ip=11.0.0.1)
[root at localhost openvswitch-1.9.3]#
[root at localhost openvswitch-1.9.3]# ovs-ofctl dump-flows br0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=83381.812s, table=0, n_packets=1156214204,
n_bytes=281331348896, idle_age=0, hard_age=65534, priority=0 actions=NORMAL
[root at localhost openvswitch-1.9.3]#
Thanks
Rashmi
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