1. NS-3를 이용한 Proxy Mobile IPv6 시뮬레이션 구현 및 예제
한국기술교육대학교 컴퓨터공학부 - 한연희 교수
고려대학교 융합소프트웨어 전문대학원 - 최현영 연구교수
2011년도 한국통신학회 단기강좌

2. PMIPv6 Introduction

3. Goal of PMIPv6
Goal
This protocol is for providing mobility support to any IPv6 host within a restricted and topologically localized portion of the network and without requiring the host to participate in any mobility related signaling.
registration
(being extended)
PMIPv6 Scenario
PMIPv6 in NS-3

4. PMIPv6 Overview [IETF RFC 5213, August 2008]
LMA: Localized Mobility Agent MAG: Mobile Access Gateway
IP Tunnel
IP-in-IP tunnel between LMA and MAG
LMA
Home Network
MN’s Home Network
(Topological Anchor Point)
MAG
LMA Address (LMAA)
That will be the tunnel entry-point
LMM (Localized Mobility Management) Domain
MAG
movement
Proxy Binding Update/Ack. (PBU/PBA)
Control messages exchanged by MAG to LMA to establish a binding between MN-HoA and Proxy-CoA
MN’s Home Network Prefix (MN-HNP)
CAFE:2:/64
MN’ Home Address (MN-HoA)
MN continues to use it as long as it roams within a same domain
Proxy Care of Address (Proxy-CoA)
The address of MAG That will be the tunnel end-point
PMIPv6 in NS-3

5. PMIPv6 Overview New entities LMA (Local Mobility Anchor)
Home Agent for the mobile node in the PMIPv6 domain
Assigns MN's home prefix and manages the MN's reachability state
MAG (Mobile Access Gateway)
Manages the mobility related signaling for a mobile node
Tracking the MN’s attachment to the link and for signaling the MN's LMA
LMA
<MN ID# - Home Network Prefix - Tunnel ID#>
PBU
PBU
6-to-6 Tunnel
4-to-6 Tunnel
6-to-4 Tunnel
4-to-4 Tunnel
PBAck
PBAck
<MN ID# - Home Network Prefix - Tunnel ID#>
MAG
MAG
<Home Network Prefix – Link-specific (MAC) Address>
PMIPv6 in NS-3

6. RA (Router Advertisement)
PMIPv6 Operation Flow
PBU: Proxy Binding Update PBA: Proxy Binding Ack. MN
MAG
AAA&Policy Store
LMA CN
MN Attachment
AAA Query with MN-ID
AAA Reply with Profile
PBU with MN-ID, Home Network Prefix option(null), Timestamp option
RA (Router Advertisement)
PBA with MN-ID, Home Network Prefix option(HNP)
Tunnel Setup
Optional
DHCP Server
DHCP Request
DHCP Request
DHCP Response
DHCP Response
[MN-HoA:CN](data)
[Proxy-CoA:LMAA][MN-HoA:CN](data)
[MN-HoA:CN](data)
PMIPv6 in NS-3

7. PMIPv6 Features Proxy Registration
LMA needs to understand the Proxy Registration
RFC 3775 MIPv6 BU/BAck. Reuse
PBU (Proxy Binding Update)
PBAck. (Proxy Binding Ack.)
PMIPv6 in NS-3

8. PMIPv6 Features Home in Any Place RA Unicast M:1 Tunnel
MAG sends the RA (Router Advertisement) messages advertising MN’s home network prefix and other parameters
MAG will emulate the home link on its access link.
MN always obtain its “home network prefix”, any where in the network.
It will ensure that MN believes it is at its home.
RA Unicast
RA should be UNICASTed to an MN
It will contain MN’s Home Network Prefix
Per-MN Prefix
M:1 Tunnel
LMA-MAG tunnel is a shared tunnel among many MNs.
One tunnel is associated to multiple MNs’ Binding Caches.
PMIPv6 in NS-3

9. PMIPv6 Features LMA’s Prefix-based Routing
LMA will add prefix routes to MN’s home network prefix over the tunnel.
MAG establishes IPv6 in IPv6 tunnel with LMA
Routing State for a MN stored in LMA
Routing State for a MN stored in MAG
Source-based Routing
PMIPv6 in NS-3

10. PMIPv6 Features Any MN is just a IPv6 host
Any MN is just a IPv6 host with its protocol operation consistent with the base IPv6 specification.
All aspects of Neighbor Discovery Protocol will not change.
LLA: Link Local Address (e.g., MAC Address)
PMIPv6 in NS-3

11. PMIPv6 in 3GPP LTE/EPC Proxy Mobile IPv6 over LTE
Vertical handover scenario
LMA
LMA
PMIPv6 in NS-3

12. PMIPv6 Implementation in NS-3
H. Y. Choi, S.-G. Min, Y.-H. Han, J. Park and H. Kim "Implementation and Evaluation of Proxy Mobile IPv6 in NS-3 Network Simulator," The 5th International Conference on Ubiquitous Information Technologies & Applications (CUTE 2010), pp. 1-5, Dec. 2010
H.-Y. Choi, S.-G. Min and Y.-H. Han, "PMIPv6-based Flow Mobility Simulation in NS-3," The 5th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, pp , June 2011.
T. M. Trung, Y.-H. Han, H.-Y. Choi, Y.-G. Hong, "A Design of Network-based Flow Mobility based on Proxy Mobile IPv6," IEEE INFOCOM Workshop on Mobility Management in the Networks of the Future World, pp. 1-5, April 2011.

13. PMIPv6 Implementation Overview Based on NS-3 3.8
Implements common part of Mobile IPv6
Mobility header, BU(Binding Update)/BA(Binding Ack.) handler
Link layer support: Wifi, WiMax
MIPv6 functionality
PMIPv6
IPv6
PMIPv6 in NS-3

14. Class Diagram
PMIPv6 in NS-3

15. Major Classes PMIPv6 Agent Mobility header process Tunneling Routing
Pmipv6Mag, Pmipv6Lma – PBU/PBA processing
BindingUpdateList, BindingCache – Manage binding information
Mobility header process
Ipv6MobilityL4Protocol – Mobility header handler
Ipv6MobilityDemux
Ipv6MobilityBindingUpdate – BU handler
Ipv6MobilityBindingAck – BA handler
Tunneling
TunnelNetDevice – IPv6-in-IPv6 creator (Encapsulator)
Ipv6TunnelL4Protocol – IPv6-in-IPv6 handler (Decapsulator)
Routing
Ipv6StaticSourceRouting – Source address based routing
Helper
MagHelper/ LmaHelper – Create and aggregate objects
Application
UnicastRadvd – MAC Unicast of RA in Wifi network
PMIPv6 in NS-3

16. Header Classes
PMIPv6 in NS-3

17. Header Classes (cont’d)
Major classes
Ipv6MobilityHeader – Common parts of mobility header
Ipv6MobilityBindingUpdateHeader – BU header
Ipv6MobilityBindingAckHeader – BA header
MobilityOptionField – Manage mobility header options and calculate 8-octets-based padding
Ipv6MobilityOptionHeader – Common parts of mobility option header
Ipv6MobilityOptionMobileNodeIdentifierHeader, … – Mobility option header
PMIPv6 in NS-3

18. Header Classes (cont’d)
Header implementation example
class Ipv6MobilityHeader : public Header {
private:
uint8_t m_payload_proto;
uint8_t m_header_len;
uint8_t m_mh_type;
uint8_t m_reserved;
uint16_t m_checksum; };
void Ipv6MobilityHeader::Print (std::ostream& os) const {
os << "( payload_proto = " << (uint32_t)GetPayloadProto()
<< " header_len = " << (uint32_t)GetHeaderLen()
<< " mh_type = " << (uint32_t)GetMhType()
<< " checksum = " << (uint32_t)GetChecksum() <<")"; }
uint32_t Ipv6MobilityHeader::GetSerializedSize () const {
return 6; }
uint32_t
Ipv6MobilityHeader::Deserialize (Buffer::Iterator start) {
Buffer::Iterator i = start;
m_payload_proto = i.ReadU8();
m_header_len = i.ReadU8();
m_mh_type = i.ReadU8();
m_reserved = i.ReadU8();
m_checksum = i.ReadNtohU16();
return GetSerializedSize (); }
void
Ipv6MobilityHeader::Serialize (Buffer::Iterator start) const {
Buffer::Iterator i = start;
i.WriteU8 (m_payload_proto);
i.WriteU8 (m_header_len);
i.WriteU8 (m_mh_type);
i.WriteU8 (m_reserved);
i.WriteU16 (0); }
PMIPv6 in NS-3

19. BindingUpdateList & BindingCache
PMIPv6 in NS-3

20. Binding Update Process
PMIPv6 in NS-3

21. Binding Update Process (cont’d)
(1) – MN attachment event trigger
Create binding update list
(2) – Sending PBU
(3)~(5) – IPv6 packet transmission between nodes
PBU packet will be arrived at the LMA
(6) – Received by mobility header handler
(7)~(9) – Demultiplexing mobility header based on MhType field in the packet
(10) – Received by PBU handler
Create/Update binding cache
Setup tunneling & routing
PMIPv6 in NS-3

22. Binding Update Process (cont’d)
(11) – Sending PBA
(12)~(14) – IPv6 packet transmission between nodes
PBA packet will be arrived at the MAG
(15) – Received by mobility header handler
(16)~(18) – Demultiplexing
(19) – Received by PBA handler
Update binding update list
Setup tunneling & routing
PMIPv6 in NS-3

23. Binding Update Process Codes
(1) – MN attachment event trigger
Ptr<WifiMac> mac = wDev->GetMac();
mac->SetNewNodeCallback (MakeCallback(&Pmipv6Mag::HandleNewNode, this));
<src/internet-stack/pmipv6-agent.cc>
void
NqapWifiMac::TxOk (const WifiMacHeader &hdr) {
NS_LOG_FUNCTION (this);
if (hdr.IsAssocResp () &&
m_stationManager->IsWaitAssocTxOk (hdr.GetAddr1 ()))
NS_LOG_DEBUG ("associated with sta="<<hdr.GetAddr1 ());
m_stationManager->RecordGotAssocTxOk (hdr.GetAddr1 ());
//Proxy Mobile IPv6 (RFC5213) Implementation in NS3
// CHY {
if(!m_newNodeCallback.IsNull())
m_newNodeCallback(hdr.GetAddr1(), Mac48Address::ConvertFrom(GetAddress()), 4 /* WIFI */); }
//}
<src/devices/wifi/nqap-wifi-mac.cc>
PMIPv6 in NS-3

24. Binding Update Process Codes (cont’d)
(2) – Sending PBU
void Pmipv6Mag::HandleNewNode(Mac48Address from, Mac48Address to, uint8_t att) {
BindingUpdateList::Entry *bule = m_buList.Lookup(pf->GetMnIdentifier());
if ( bule == 0 )
bule = m_buList.Add(pf->GetMnIdentifier()); }
bule->SetAccessTechnologyType(att);
bule->SetMnLinkIdentifier(pf->GetMnLinkIdentifier());
bule->SetLmaAddress(pf->GetLmaAddress());
bule->SetIfIndex (ifindex);
//preset header information
bule->SetLastBindingUpdateSequence(GetSequence());
bule->SetLastBindingUpdateTime(MicroSeconds(Simulator::Now().GetMicroSeconds()));
Ptr<Packet> p = BuildPBU(bule);
//save packet
bule->SetPBUPacket(p);
//reset (for the first registration)
bule->ResetRetryCount();
//send PBU
SendMessage(p->Copy(), bule->GetLmaAddress(), 64);
PMIPv6 in NS-3
<src/internet-stack/pmipv6-agent.cc>

25. Binding Update Process Codes (cont’d)
(6) – Received by mobility header handler
enum Ipv6L4Protocol::RxStatus_e Ipv6MobilityL4Protocol::Receive (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface) {
NS_LOG_FUNCTION (this << packet << src << dst << interface);
Ptr<Packet> p = packet->Copy ();
Ptr<Ipv6MobilityDemux> ipv6MobilityDemux = GetObject<Ipv6MobilityDemux>();
Ptr<Ipv6Mobility> ipv6Mobility = 0;
Ipv6MobilityHeader mh;
p->PeekHeader (mh);
ipv6Mobility = ipv6MobilityDemux -> GetMobility ( mh.GetMhType() );
if(ipv6Mobility)
ipv6Mobility -> Process (p, src, dst, interface); }
return Ipv6L4Protocol::RX_OK;
<src/internet-stack/ipv6-mobility-l4-protocol.cc>
PMIPv6 in NS-3

26. Binding Update Process Codes (cont’d)
(7)~(9) – Demultiplexing mobility header based on MhType field in the packet
class Ipv6MobilityBindingUpdate : public Ipv6Mobility {
public:
static const uint8_t MOB_NUMBER = 5;
uint8_t Ipv6MobilityBindingUpdate::GetMobilityNumber () const {
return MOB_NUMBER; }
<src/internet-stack/ipv6-mobility.h,cc>
Ptr<Ipv6Mobility> Ipv6MobilityDemux::GetMobility (int mobilityNumber) {
for (Ipv6MobilityList_t::iterator i = m_mobilities.begin (); i != m_mobilities.end (); ++i)
if ((*i)->GetMobilityNumber () == mobilityNumber)
return *i; }
return 0;
<src/internet-stack/ipv6-mobility-demux.cc>
PMIPv6 in NS-3

27. Binding Update Process Codes (cont’d)
(7)~(9) – Demultiplexing mobility header based on MhType field in the packet
uint8_t Ipv6MobilityBindingUpdate::Process (Ptr<Packet> p, Ipv6Address src, Ipv6Address dst, Ptr<Ipv6Interface> interface) {
NS_LOG_FUNCTION_NOARGS();
Ptr<Packet> packet = p->Copy();
Ipv6MobilityBindingUpdateHeader buh;
Ipv6MobilityOptionBundle bundle;
/* Proxy Mobile Ipv6 process routine */
packet->RemoveHeader(buh);
if(buh.GetFlagP())
Ptr<Pmipv6Agent> pmip6 = GetNode()->GetObject<Pmipv6Agent>();
if( pmip6 )
Simulator::ScheduleNow( &Pmipv6Agent::HandlePBU, pmip6, p, src, dst, interface);
return 0; }
<src/internet-stack/ipv6-mobility.cc>
PMIPv6 in NS-3

28. Binding Update Process Codes (cont’d)
(10) – Received by PBU handler/ (11) – Sending PBA
uint8_t Pmipv6Lma::HandlePBU(Ptr<Packet> packet, Ipv6Address src, Ipv6Address dst, Ptr<Ipv6Interface> interface) {
Ptr<Ipv6Mobility> ipv6Mobility = ipv6MobilityDemux->GetMobility(pbu.GetMhType());
NS_ASSERT( ipv6Mobility );
uint8_t length = ((pbu.GetHeaderLen() + 1 )<<3) - pbu.GetOptionsOffset();
ipv6Mobility->ProcessOptions ( packet, pbu.GetOptionsOffset(), length, bundle);
if( pbu.GetLifetime() > 0) {
bce = m_bCache.Add(mnId);
bce->SetProxyCoa(src);
bce->SetMnLinkIdentifier(mnLinkId);
bce->SetAccessTechnologyType(bundle.GetAccessTechnologyType());
bce->SetHandoffIndicator(bundle.GetHandoffIndicator());
bce->SetMagLinkAddress(bundle.GetMagLinkAddress());
bce->SetLastBindingUpdateTime(bundle.GetTimestamp());
bce->SetReachableTime(Seconds(pbu.GetLifetime()));
bce->SetLastBindingUpdateSequence(pbu.GetSequence());
<src/internet-stack/pmipv6-agent.cc>
PMIPv6 in NS-3

29. Binding Update Codes (cont’d)
(10) – Received by PBU handler/ (11) – Sending PBA
//create tunnel
SetupTunnelAndRouting (bce);
bce->MarkReachable();
//start lifetime timer
bce->StartReachableTimer(); }
errStatus = Ipv6MobilityHeader::BA_STATUS_BINDING_UPDATE_ACCEPTED;
//send PBA
Ptr<Packet> pktPba;
if ( bce != 0 ) {
pktPba = BuildPBA(bce, errStatus);
else
pktPba = BuildPBA(pbu, bundle, errStatus);
SendMessage ( pktPba, src, 64);
<src/internet-stack/pmipv6-agent.cc>
PMIPv6 in NS-3

30. Binding Update Process Codes (cont’d)
(19) – Received by PBA handler
uint8_t Pmipv6Mag::HandlePBA(Ptr<Packet> packet, Ipv6Address src, Ipv6Address dst, Ptr<Ipv6Interface> interface)
BindingUpdateList::Entry *bule = m_buList.Lookup(bundle.GetMnIdentifier());
switch (pba.GetStatus()) {
case Ipv6MobilityHeader::BA_STATUS_BINDING_UPDATE_ACCEPTED:
bule->StopRetransTimer();
bule->SetPBUPacket(0);
//update information
bule->SetHomeNetworkPrefixes(bundle.GetHomeNetworkPrefixes());
bule->SetReachableTime(Seconds(pba.GetLifetime()));
if( pba.GetLifetime() > 0 )
//register radvd interface
SetupRadvdInterface(bule);
//create tunnel & setup routing
SetupTunnelAndRouting(bule); }
bule->MarkReachable();
//Setup lifetime
bule->StartRefreshTimer();
bule->StartReachableTimer();
<src/internet-stack/pmipv6-agent.cc>
PMIPv6 in NS-3

31. Data Process
PMIPv6 in NS-3

32. Data Process (cont’d) (1)~(2) – IPv6 packet arrival
Data packet from source node, either CN or MN
(3)~(4) – Incoming packet process in IPv6
Query to routing module
(3)’~(4)’ – Subsequent routing query (default)
(3)”~(4)” – Source based routing query only in MAG
Source based routing is higher priority than static routing
(5) – Forwarding the packet to the MAG via tunnel device
IPv6-in-IPv6 Encapsulation performed
(6) – Sending encapsulated packet
PMIPv6 in NS-3

33. Data Process (cont’d) (7)~(9) – IPv6 packet transmission between nodes
(10)~(11) – Incoming packet process in IPv6
Query to routing module
(12) – Received by IPv6-in-IPv6 packet handler
Decapsulation performed
(13) – Sending decapsulated packet
(14) – Sending Data Packet to the destination node, either CN or MN
PMIPv6 in NS-3

34. Data Process Codes (0) – Tunnel Device and Routing Setup
bool Pmipv6Mag::SetupTunnelAndRouting(BindingUpdateList::Entry *bule)
//create tunnel
Ptr<Ipv6TunnelL4Protocol> th = GetNode()->GetObject<Ipv6TunnelL4Protocol>();
NS_ASSERT(th);
uint16_t tunnelIf = th->AddTunnel(bule->GetLmaAddress());
bule->SetTunnelIfIndex (tunnelIf);
<src/internet-stack/pmipv6-agent.cc>
PMIPv6 in NS-3

35. Data Process Codes (cont’d)
(0) – Tunnel Device and Routing Setup
//routing setup by static routing protocol
Ipv6StaticRoutingHelper staticRoutingHelper;
Ipv6StaticSourceRoutingHelper sourceRoutingHelper;
Ptr<Ipv6> ipv6 = GetNode()->GetObject<Ipv6>();
Ptr<Ipv6StaticRouting> staticRouting = staticRoutingHelper.GetStaticRouting(ipv6);
Ptr<Ipv6StaticSourceRouting> sourceRouting = sourceRoutingHelper.GetStaticSourceRouting(ipv6);
NS_ASSERT(staticRouting && sourceRouting);
std::list<Ipv6Address> hnpList = bule->GetHomeNetworkPrefixes();
for ( std::list<Ipv6Address>::iterator i = hnpList.begin(); i != hnpList.end(); i++ ) {
NS_LOG_LOGIC ("Add Route to " << (*i) << "/64 via " << (uint32_t)bule->GetIfIndex());
staticRouting->AddNetworkRouteTo((*i), Ipv6Prefix(64), bule->GetIfIndex());
NS_LOG_LOGIC ("Add Source Route from " << (*i) << "/64 via " << (uint32_t)bule->GetTunnelIfIndex());
sourceRouting->AddNetworkRouteFrom((*i), Ipv6Prefix(64), bule->GetTunnelIfIndex()); }
<src/internet-stack/pmipv6-agent.cc>
PMIPv6 in NS-3

36. Data Process Codes (cont’d)
(5) – Forwarding the packet to the MAG via tunnel device/ (6) – Sending encapsulated packet
boolTunnelNetDevice::Send (Ptr<Packet> packet, const Address& dest, uint16_t protocolNumber)
Ptr<Ipv6L3Protocol> ipv6 = GetNode()->GetObject<Ipv6L3Protocol>();
NS_ASSERT (ipv6 != 0 && ipv6->GetRoutingProtocol () != 0);
NS_ASSERT ( !m_remoteAddress.IsAny() );
Ipv6Address src = m_localAddress;
Ipv6Address dst = m_remoteAddress;
SocketIpTtlTag tag;
uint8_t ttl = 64;
tag.SetTtl (ttl);
packet->AddPacketTag (tag);
ipv6->Send (packet, src, dst, 41 /* IPv6-in-IPv6 */, 0);
<src/devices/tunnel-net-device.cc>
PMIPv6 in NS-3

37. Data Process Codes (cont’d)
(12) – Received by IPv6-in-IPv6 packet handler/ (13) – Sending decapsulated packet
const uint8_t Ipv6TunnelL4Protocol::PROT_NUMBER = 41; /* IPV6-in-IPv6 */
enum Ipv6L4Protocol::RxStatus_e Ipv6TunnelL4Protocol::Receive (Ptr<Packet> packet, Ipv6Address const &src, Ipv6Address const &dst, Ptr<Ipv6Interface> interface)
Ptr<Packet> p = packet->Copy();
Ipv6Header innerHeader;
p->RemoveHeader(innerHeader);
Ipv6Address source = innerHeader.GetSourceAddress();
Ipv6Address destination = innerHeader.GetDestinationAddress();
SocketIpTtlTag tag;
tag.SetTtl (innerHeader.GetHopLimit() - 1);
p->AddPacketTag (tag);
ipv6->Send(p, source, destination, innerHeader.GetNextHeader(), 0);
<src/internet-stack/ipv6-tunnel-l4-protocol.cc>
PMIPv6 in NS-3

38. Helpers MagHelper LmaHelper Install(node)
Create PMIPv6 related objects and aggregate into Node
Register callback for MN attachment trigger to WifiMac in node
Install(node, addr, Ptr<Node> ap_node)
Register callback for MN attachment trigger to WifiMac in ap_node
SetProfileHelper(Pmip6ProfileHelper)
Set profile helper
LmaHelper
SetPrefixPoolBase(prefix, prefix_len)
Set Prefix Pool information
PMIPv6 in NS-3

39. PMIPv6 Simulation Scenario
PMIPv6 in NS-3

40. Simulation Script Create nodes Install IPv4/IPv6 networking stack
backbone.Create(3);
aps.Create(2);
cn.Create(1);
sta.Create(1);
lma.Add(backbone.Get(0));
mags.Add(backbone.Get(1));
mags.Add(backbone.Get(2));
outerNet.Add(lma);
outerNet.Add(cn);
mag1Net.Add(mags.Get(0));
mag1Net.Add(aps.Get(0));
mag2Net.Add(mags.Get(1));
mag2Net.Add(aps.Get(1));
InternetStackHelper internet;
internet.Install (backbone);
internet.Install (aps);
internet.Install (cn);
internet.Install (sta);
PMIPv6 in NS-3

41. Simulation Script (cont’d)
Attach devices & Assign IPv6 Addresses
//Link between CN and LMA is 50Mbps and 10ms delay
csma1.SetChannelAttribute ("DataRate", DataRateValue (DataRate( )));
csma1.SetChannelAttribute ("Delay", TimeValue (MilliSeconds(10)));
csma1.SetDeviceAttribute ("Mtu", UintegerValue (1400));
outerDevs = csma1.Install(outerNet);
iifc = AssignIpv6Address(outerDevs.Get(0), Ipv6Address("3ffe:2::1"), 64);
outerIfs.Add(iifc);
iifc = AssignIpv6Address(outerDevs.Get(1), Ipv6Address("3ffe:2::2"), 64);
outerIfs.SetRouter(0, true);
//All Link is 50Mbps and 2ms delay
csma.SetChannelAttribute ("DataRate", DataRateValue (DataRate( )));
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds(2)));
csma.SetDeviceAttribute ("Mtu", UintegerValue (1400));
backboneDevs = csma.Install(backbone);
iifc = AssignIpv6Address(backboneDevs.Get(0), Ipv6Address("3ffe:1::1"), 64);
backboneIfs.Add(iifc);
iifc = AssignIpv6Address(backboneDevs.Get(1), Ipv6Address("3ffe:1::2"), 64);
iifc = AssignIpv6Address(backboneDevs.Get(2), Ipv6Address("3ffe:1::3"), 64);
backboneIfs.SetRouter(0, true);
PMIPv6 in NS-3

42. Simulation Script (cont’d)
Setup mobility
MobilityHelper mobility;
Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator> ();
positionAlloc->Add (Vector (-100.0, 0.0, 0.0)); //MAG1AP
positionAlloc->Add (Vector (100.0, 0.0, 0.0)); //MAG2AP
mobility.SetPositionAllocator (positionAlloc);
mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
mobility.Install (aps);
Ptr<ListPositionAllocator> staPositionAlloc = CreateObject<ListPositionAllocator> ();
staPositionAlloc->Add (Vector (-100.0, 100.0, 0.0)); //STA
mobility.SetPositionAllocator (staPositionAlloc);
mobility.SetMobilityModel ("ns3::ConstantVelocityMobilityModel");
mobility.Install(sta);
Ptr<ConstantVelocityMobilityModel> cvm = sta.Get(0)->GetObject<ConstantVelocityMobilityModel>();
cvm->SetVelocity(Vector (20.0, 0, 0)); //move to left to right 20.0m/s
PMIPv6 in NS-3

43. Simulation Script (cont’d)
Setup Wifi
Ssid ssid = Ssid("MAG");
YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();
wifiPhy.SetPcapDataLinkType (YansWifiPhyHelper::DLT_IEEE802_11_RADIO);
WifiHelper wifi = WifiHelper::Default ();
NqosWifiMacHelper wifiMac = NqosWifiMacHelper::Default ();
YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default ();
wifiPhy.SetChannel (wifiChannel.Create ());
wifiMac.SetType ("ns3::NqapWifiMac",
"Ssid", SsidValue (ssid),
"BeaconGeneration", BooleanValue (true),
"BeaconInterval", TimeValue (MilliSeconds(100)));
mag1ApDev = wifi.Install (wifiPhy, wifiMac, mag1Net.Get(1));
//WLAN interface
wifiMac.SetType ("ns3::NqstaWifiMac",
"Ssid", SsidValue (ssid),
"ActiveProbing", BooleanValue (false));
staDevs.Add( wifi.Install (wifiPhy, wifiMac, sta));
PMIPv6 in NS-3

44. Simulation Script (cont’d)
Setup PMIPv6
//attach PMIPv6 agents
Pmip6ProfileHelper *profile = new Pmip6ProfileHelper();
//adding profile for each station
Identifier(Mac48Address::ConvertFrom(staDevs.Get(0)->GetAddress())),
backboneIfs.GetAddress(0, 1),
std::list<Ipv6Address>());
Pmip6LmaHelper lmahelper;
lmahelper.SetPrefixPoolBase(Ipv6Address("3ffe:1:4::"), 48);
lmahelper.SetProfileHelper(profile);
lmahelper.Install(lma.Get(0));
Pmip6MagHelper maghelper;
maghelper.SetProfileHelper(profile);
maghelper.Install (mags.Get(0), mag1Ifs.GetAddress(0, 0), aps.Get(0));
maghelper.Install (mags.Get(1), mag2Ifs.GetAddress(0, 0), aps.Get(1));
PMIPv6 in NS-3

45. Simulation Script (cont’d)
Setup Traffic
Udp6ServerHelper udpServer(6000);
ApplicationContainer apps = udpServer.Install (sta.Get (0));
apps.Start (Seconds (1.0));
apps.Stop (Seconds (10.0));
uint32_t packetSize = 1024;
uint32_t maxPacketCount = 0xffffffff;
Time interPacketInterval = MilliSeconds(10);
Udp6ClientHelper udpClient(Ipv6Address("3ffe:1:4:1:200:ff:fe00:c"), 6000);
udpClient.SetAttribute ("Interval", TimeValue (interPacketInterval));
udpClient.SetAttribute ("PacketSize", UintegerValue (packetSize));
udpClient.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount));
apps = udpClient.Install (cn.Get (0));
apps.Start (Seconds (1.5));
PMIPv6 in NS-3

46. Simulation Results PCAP Trace of Binding Update in the LMA
PMIPv6 in NS-3

47. Simulation Results (cont’d)
PCAP Trace of Handover in the MN
PMIPv6 in NS-3

48. Simulation Results (cont’d)
PCAP Trace of Tunneling in the LMA
PMIPv6 in NS-3

49. Simulation Results (cont’d)
PCAP Trace of Tunneling after handover in the LMA
PMIPv6 in NS-3

50. Simulation Results (cont’d)
Handover Latency
PMIPv6 in NS-3

51. Thank you
- Q&A -