how to pre-populate ARP cache ?

[gglggl]

Does anyone have some code snippet that shows how to pre-populate the
ARP cache ?

[Pavel Boyko]

On Thu, Feb 11, 2010 at 1:20 AM, gglggl <ggl...@gmail.com> wrote:
> Does anyone have some code snippet that shows how to pre-populate the
> ARP cache ?

void
PopulateArpCache ()
{
Ptr<ArpCache> arp = CreateObject<ArpCache> ();
arp->SetAliveTimeout (Seconds(3600 * 24 * 365));
for (NodeList::Iterator i = NodeList::Begin(); i != NodeList::End(); ++i)
{
Ptr<Ipv4L3Protocol> ip = (*i)->GetObject<Ipv4L3Protocol> ();
NS_ASSERT(ip !=0);
ObjectVectorValue interfaces;
ip->GetAttribute("InterfaceList", interfaces);
for(ObjectVectorValue::Iterator j = interfaces.Begin(); j !=
interfaces.End (); j ++)
{
Ptr<Ipv4Interface> ipIface = (*j)->GetObject<Ipv4Interface> ();
NS_ASSERT(ipIface != 0);
Ptr<NetDevice> device = ipIface->GetDevice();
NS_ASSERT(device != 0);
Mac48Address addr = Mac48Address::ConvertFrom(device->GetAddress ());
for(uint32_t k = 0; k < ipIface->GetNAddresses (); k ++)
{
Ipv4Address ipAddr = ipIface->GetAddress (k).GetLocal();
if(ipAddr == Ipv4Address::GetLoopback())
continue;
ArpCache::Entry * entry = arp->Add(ipAddr);
entry->MarkWaitReply(0);
entry->MarkAlive(addr);
}
}
}
for (NodeList::Iterator i = NodeList::Begin(); i != NodeList::End(); ++i)
{
Ptr<Ipv4L3Protocol> ip = (*i)->GetObject<Ipv4L3Protocol> ();
NS_ASSERT(ip !=0);
ObjectVectorValue interfaces;
ip->GetAttribute("InterfaceList", interfaces);
for(ObjectVectorValue::Iterator j = interfaces.Begin(); j !=
interfaces.End (); j ++)
{
Ptr<Ipv4Interface> ipIface = (*j)->GetObject<Ipv4Interface> ();
ipIface->SetAttribute("ArpCache", PointerValue(arp));
}
}
}

Pavel

[Grilo]

Hello,

I get an error in line:

Ptr<Ipv4Interface> ipIface = (*j)->GetObject<Ipv4Interface> ();

The compiler reports:

../examples/udp-alarm-app/udp-fault-detection-app.cc:501:40: error: base operand of ‘->’ has non-pointer type ‘const std::pair<const unsigned int, ns3::Ptr<ns3::Object> >’

../examples/udp-alarm-app/udp-fault-detection-app.cc:501:65: error: expected primary-expression before ‘>’ token

../examples/udp-alarm-app/udp-fault-detection-app.cc:501:68: error: expected primary-expression before ‘)’ token

I'm using ns-3.21. Any ideas?

Regards,

António

[Tommaso Pecorella]

Hi,

may I suggest to read the error message ?

It's extremely clear, and I can't explain further without insulting your intelligence.

Cheers,

T.

[Grilo]

Well, thanks for not insulting my intelligence. It's indeed obvious. 

[Grilo]

Solved. Thanks.

[Joon 호]

Hi Pavel,

then where do I call PopulateArpCache() function ?

Regards,

Joon

2014년 10월 17일 금요일 오후 7시 41분 37초 UTC+9, Grilo 님의 말:

Solved. Thanks.

[Konrad Pustelnik]

Hello I have one problem,

assert failed. cond="ip !=0", file=../scratch/wifiac-testing.cc, line=509

terminate called without an active exception

Could You help me ?