Hello everyone,
I am a newbie to NOX and OpenFlow. I have some problems in setting the
NOX(0.9.2 core-beta) controller using Open VSwitch (OVS) 1.9.90. Hope some one
could give me some help or suggestions.
Generally, my problem is in controller setting part on switch. When I set the
NOX controller to OVS, OVS seems not working under OpenFlow model: Two PCs
connect to the switch can still ping each other, but wireshark on controller PC
doesn't receive the ping message between the PCs.
Here is the procedure and results:
Controller PC: 192.168.1.11
Switch Eth1(eth0): 192.168.1.10
PC1 linked ge-1/1/1 (192.168.1.200)
PC2 linked ge-1/1/4 (192.168.1.5)
1. Set Controller IP/Port to OVS
I use ovs-vsctl --db=tcp:192.168.1.10:6633 set-controller br0
tcp:192.168.1.11:6633
then it is set:
root@XorPlus#ovs-vsctl --db=tcp:192.168.1.10:6633 show
d7c577c8-ba63-4b21-b987-1f0f14be2eed
Bridge "br0"
Controller "tcp:192.168.1.11:6633"
Port "br0"
Interface "br0"
type: internal
Port "ge-1/1/1"
Interface "ge-1/1/1"
type: pronto
Port "ge-1/1/4"
Interface "ge-1/1/4"
type: pronto
2.snoop seems not work:
root@XorPlus#ovs-ofctl snoop br0
ovs-ofctl: br0: failed to connect to socket (Connection reset by peer)
3. On controller PC, I start the NOX with no application, it keeps telling me
the connection is set:
root@Comp:~/nox/build/src# ./nox_core -i ptcp:6633
NOX 0.9.2~core~beta (nox_core), compiled Apr 17 2013 14:08:55
00001|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44103
00002|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44104
00003|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44105
00004|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44107
00005|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44108
00006|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44109
00007|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44110
00008|connection_manager|WARN:connected: 192.168.1.11:6633<->192.168.1.10:44111
....
The wireshark can catch packets between them( packets between
192.168.1.10 and 192.168.1.11)
But on switch, use root@XorPlus#ovs-vsctl --db=tcp:192.168.1.10:6633 show,
there's no "is connected: true" under "Controller "tcp:192.168.1.11:6633" "
And the port number(if it is) of switch(192.168.1.10) seems not fix to 6633
4. I think for OVS once controller is connected, switch will change from layer2
switch to OVS switch(disable flooding, begin OpenFlow function)
However, when I use PC1 (192.168.1.5) to ping PC2(192.168.1.200 ), they can
still ping each other, and the Wireshark on controller PC doesn't catch packets
from them.
So I wonder if the controller is really connected with the switch? Besides the
"set-controller" command on OVS do I need to some other setting?
Hope anyone with knowledge about this could give me some suggestions.
Thanks,
Alan_______________________________________________
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