Set DSCP in NS3 packet

[Sunshine]

Hi, looking forward to your help.

I'm using NS3+ofswitch13+floodlight. In order to implement dscp_meter at OpenFlow Switch, I have to set the DSCP at low class(eg. AF11). So here is my question:

Is that possible to set DSCP a different value (different from 0x00) at NS3?

I have tried the following methods and both failed:

1) Modify the default value(0x00) of DSCP in NS3: CheckSum Error occurred and still CS0

2) Writing my own application and tag the packet as following:

       SocketIpTosTag my_tag;

       my_tag.SetTos(0x28);

       Ptr<Packet> packet = Create<Packet> (m_packetSize);

       packet -> AddPacketTag(my_tag);

       m_socket->Send (packet);

   

    Or

 

       Ptr<Packet> packet = Create<Packet> (m_packetSize);

       m_socket->SetIpTos(0x30);

       m_socket->Send (packet);

    Both were failed, again.

I also thought about generating my own packet. But I'm using ECN, OpenFlow at the same time. I'm afraid that OpenFlow will be discordant with my own packet.

I will be really appreciate for your time and kindness.

Best,

Yang

[Sunshine]

Hi, anybody who may see this, still waiting for your help!

在 2017年3月17日星期五 UTC+8下午6:03:21，Sunshine写道：