Could I Config:SetDefault() again in the same Simulator::Run() ?

[Jian Liu]

For example,

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (28000000));

Could I reset it again to a different value later?

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (39000000));  

[Soulimane Mammar]

Hi,

If you do this before running the simulation, the last statement will override the first.

If at some point in your simulation, you schedule an event that changes the value of some attribute, the newly changed value will take effect at that moment

Regards 

[Tom Henderson]

Yes, you can call this multiple times.  However, the value only affects objects that are instantiated after that statement.

So, for instance:

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (28000000));

Ptr<MmWavePhyMacCommon> common1 = CreateObject<mmWavePhyMacCommon> ();

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (39000000)); 

Ptr<MmWavePhyMacCommon> common2 = CreateObject<mmWavePhyMacCommon> ();

common1 and common2 will have different center frequencies.

[Amir Nazeri]

Hi @Tom

What if :

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (28000000));

Ptr<MmWavePhyMacCommon> common1 = CreateObject<mmWavePhyMacCommon> ();

Config::SetDefault ("ns3::MmWavePhyMacCommon::CenterFreq", DoubleValue (39000000));  

Ptr<MmWavePhyMacCommon> common1= CreateObject<mmWavePhyMacCommon> ();

Does that set a new freq to common1. Or common1 freq will remain 28000000?  

Thanks