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dlinknctu / OpenNet

A Simulator for Software-Defined Wireless Local Area Network
GNU General Public License v2.0
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error OpenNet to prepare SDN controller #67

Open PhDstudent26 opened 8 years ago

PhDstudent26 commented 8 years ago

Good afternoon, I tried to install OpenNet according to the instructions that I found in https://github.com/dlinknctu/OpenNet
When I tried the command # python wifiroaming.py, I had the following error:

* Adding controller Unable to contact the remote controller at 127.0.0.1:6633 Traceback (most recent call last): File "wifiroaming.py", line 208, in WifiNet() File "wifiroaming.py", line 168, in WifiNet net.addLink( clnode1, clnode2 ) File "build/bdist.linux-i686/egg/mininet/net.py", line 393, in addLink File "build/bdist.linux-i686/egg/mininet/link.py", line 424, in init** File "build/bdist.linux-i686/egg/mininet/link.py", line 468, in makeIntfPair File "build/bdist.linux-i686/egg/mininet/util.py", line 194, in makeIntfPair Exception: Error creating interface pair (s1-eth2,s2-eth2): RTNETLINK answers: File exists

can you please help me to correct the problem (the ns-3 version is 3.22 and mininet version is 2.2.1 as mentioned in the file install.sh)

pichuang commented 8 years ago

hi,

please use "mn -c" and start your controller

thanks

PhDstudent26 commented 8 years ago

Hi, Thank you for the response. I used mn -c then python wifiroaming.py I had the following message: Unable to contact the remote controller at 127.0.0.1:6633 Wifi pcap path: /tmp/pcap/wifi CSMA pcap path:/tmp/pcap/csma Netanim path: /tmp/xml/wifi-wired-bridged4.xml * Starting network * Configuring hosts h1 h2 * Starting controller c0 * Starting 7 switches s1 s2 s3 s4 s5 s6 s7 ... Testing network connectivity *\ h1 : ('ping 10.10.10.2 -c 3',) PING 10.10.10.2 (10.10.10.2) 56(84) bytes of data. From 10.10.10.1 icmp_seq=1 Destination Host Unreachable From 10.10.10.1 icmp_seq=2 Destination Host Unreachable From 10.10.10.1 icmp_seq=3 Destination Host Unreachable

--- 10.10.10.2 ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2008ms pipe 3 *\ Starting CLI: opennet> Max Packets per trace file exceeded

pichuang commented 8 years ago

hi,

Unable to contact the remote controller at 127.0.0.1:6633

You need to start your own controller. OpenNet didn't handle sdn controller.

PhDstudent26 commented 8 years ago

hi, Can you please tell me how can I start my own controller?

pichuang commented 8 years ago

Suggest you to see sdnds-tw/ryuInstallHelper It's easy to use.