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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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Some problems with TBIntf #114

Closed yuxineverforever closed 7 years ago

yuxineverforever commented 7 years ago

Actually, when I run the TBIntf-example, some confusing problems occur: ns-3 network demo Creating Network Configuring hosts Error: moveIntf: tap0 not successfully moved to h0: RTNETLINK answers: File exists Error: moveIntf: tap0 not successfully moved to h0: RTNETLINK answers: File exists Error: moveIntf: tap0 not successfully moved to h0: RTNETLINK answers: File exists Error: moveIntf: tap0 not successfully moved to h0: RTNETLINK answers: File exists gave up after 3 retries

It seems there error are related to the cmd "ip link set" defined in util.py in mininet/mininet

My Mininet is 2.3.0d1 and NS3 version 3.26 (not the same with OpenNet) Could anyone give me some suggestions?>? Many thanks~!

kansokusha commented 7 years ago

The error message shows that the network interface tap0 is already existing in namespace h0.

Before you try to execute the example script, did you build the OpenNet in your environment? OpenNet has applyed many patches on Mininet and NS-3 to let them work together, one of the patch on Mininet is the procedure to remove network interfaces created by OpenNet script.

Since the integration relies on these patches, OpenNet only works on corresponding version of NS-3 and Mininet. Sorry for that we do not have resource to keep updating the version of Mininet and NS-3.

yuxineverforever commented 7 years ago

Thank you for your help~