An interface aggregated to a node to provide global routing info. More...

#include <global-router-interface.h>

Inheritance diagram for ns3::GlobalRouter:

Collaboration diagram for ns3::GlobalRouter:

Public Member Functions
	GlobalRouter ()
	Create a Global Router class.
uint32_t	DiscoverLSAs (void)
	Walk the connected channels, discover the adjacent routers and build the associated number of Global Routing Link State Advertisements that this router can export.
Ipv4RoutingTableEntry *	GetInjectedRoute (uint32_t i)
	Return the injected route indexed by i.
bool	GetLSA (uint32_t n, GlobalRoutingLSA &lsa) const
	Get a Global Routing Link State Advertisements that this router has said that it can export.
uint32_t	GetNInjectedRoutes (void)
	Get the number of injected routes that have been added to the routing table.
uint32_t	GetNumLSAs (void) const
	Get the Number of Global Routing Link State Advertisements that this router can export.
Ipv4Address	GetRouterId (void) const
	Get the Router ID associated with this Global Router.
Ptr< Ipv4GlobalRouting >	GetRoutingProtocol (void)
void	InjectRoute (Ipv4Address network, Ipv4Mask networkMask)
	Inject a route to be circulated to other routers as an external route.
void	RemoveInjectedRoute (uint32_t i)
	Withdraw a route from the global unicast routing table.
void	SetRoutingProtocol (Ptr< Ipv4GlobalRouting > routing)
bool	WithdrawRoute (Ipv4Address network, Ipv4Mask networkMask)
	Withdraw a route from the global unicast routing table.
Public Member Functions inherited from ns3::Object
	Object ()
virtual	~Object ()
void	AggregateObject (Ptr< Object > other)
void	Dispose (void)
AggregateIterator	GetAggregateIterator (void) const
virtual TypeId	GetInstanceTypeId (void) const
template<typename T >
Ptr< T >	GetObject (void) const
template<typename T >
Ptr< T >	GetObject (TypeId tid) const
void	Start (void)
Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	SimpleRefCount (const SimpleRefCount &o)
uint32_t	GetReferenceCount (void) const
SimpleRefCount &	operator= (const SimpleRefCount &o)
void	Ref (void) const
void	Unref (void) const
Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
void	GetAttribute (std::string name, AttributeValue &value) const
bool	GetAttributeFailSafe (std::string name, AttributeValue &attribute) const
void	SetAttribute (std::string name, const AttributeValue &value)
bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)

Static Public Member Functions
static TypeId	GetTypeId (void)
	The Interface ID of the Global Router interface.

Private Types
typedef std::list < Ipv4RoutingTableEntry * >	InjectedRoutes
typedef std::list < Ipv4RoutingTableEntry * > ::const_iterator	InjectedRoutesCI
typedef std::list < Ipv4RoutingTableEntry * > ::iterator	InjectedRoutesI
typedef std::list < GlobalRoutingLSA * >	ListOfLSAs_t

Private Member Functions
	GlobalRouter (GlobalRouter &sr)
	Global Router copy construction is disallowed.
virtual	~GlobalRouter ()
bool	AnotherRouterOnLink (Ptr< NetDevice > nd, bool allowRecursion) const
void	BuildNetworkLSAs (NetDeviceContainer c)
void	ClearLSAs (void)
virtual void	DoDispose (void)
Ipv4Address	FindDesignatedRouterForLink (Ptr< NetDevice > ndLocal, bool allowRecursion) const
bool	FindInterfaceForDevice (Ptr< Node > node, Ptr< NetDevice > nd, uint32_t &index) const
Ptr< NetDevice >	GetAdjacent (Ptr< NetDevice > nd, Ptr< Channel > ch) const
Ptr< BridgeNetDevice >	NetDeviceIsBridged (Ptr< NetDevice > nd) const
GlobalRouter &	operator= (GlobalRouter &sr)
	Global Router assignment operator is disallowed.
void	ProcessBridgedBroadcastLink (Ptr< NetDevice > nd, GlobalRoutingLSA *pLSA, NetDeviceContainer &c)
void	ProcessBroadcastLink (Ptr< NetDevice > nd, GlobalRoutingLSA *pLSA, NetDeviceContainer &c)
void	ProcessPointToPointLink (Ptr< NetDevice > ndLocal, GlobalRoutingLSA *pLSA)
void	ProcessSingleBroadcastLink (Ptr< NetDevice > nd, GlobalRoutingLSA *pLSA, NetDeviceContainer &c)

Private Attributes
InjectedRoutes	m_injectedRoutes
ListOfLSAs_t	m_LSAs
Ipv4Address	m_routerId
Ptr< Ipv4GlobalRouting >	m_routingProtocol

Additional Inherited Members
Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
virtual void	DoDispose (void)
virtual void	DoStart (void)
virtual void	NotifyNewAggregate (void)

Detailed Description

An interface aggregated to a node to provide global routing info.

An interface aggregated to a node that provides global routing information to a global route manager. The presence of the interface indicates that the node is a router. The interface is the mechanism by which the router advertises its connections to neighboring routers. We're basically allowing the route manager to query for link state advertisements.

Definition at line 576 of file global-router-interface.h.

Member Typedef Documentation

typedef std::list<Ipv4RoutingTableEntry *> ns3::GlobalRouter::InjectedRoutes

private

Definition at line 733 of file global-router-interface.h.

typedef std::list<Ipv4RoutingTableEntry *>::const_iterator ns3::GlobalRouter::InjectedRoutesCI

private

Definition at line 734 of file global-router-interface.h.

typedef std::list<Ipv4RoutingTableEntry *>::iterator ns3::GlobalRouter::InjectedRoutesI

private

Definition at line 735 of file global-router-interface.h.

typedef std::list<GlobalRoutingLSA*> ns3::GlobalRouter::ListOfLSAs_t

private

Definition at line 727 of file global-router-interface.h.

Constructor & Destructor Documentation

ns3::GlobalRouter::GlobalRouter ( )

Create a Global Router class.

Definition at line 516 of file global-router-interface.cc.

References ns3::GlobalRouteManager::AllocateRouterId(), m_routerId, NS_LOG_FUNCTION_NOARGS, and ns3::Ipv4Address::Set().

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ns3::GlobalRouter::~GlobalRouter ( )

privatevirtual

Definition at line 523 of file global-router-interface.cc.

References ClearLSAs(), and NS_LOG_FUNCTION_NOARGS.

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ns3::GlobalRouter::GlobalRouter ( GlobalRouter & sr )

private

Global Router copy construction is disallowed.

Member Function Documentation

bool ns3::GlobalRouter::AnotherRouterOnLink	(	Ptr< NetDevice >	nd,
		bool	allowRecursion
	)		const

private

Definition at line 1379 of file global-router-interface.cc.

References ns3::NetDevice::GetChannel(), ns3::Channel::GetDevice(), ns3::Node::GetId(), ns3::Channel::GetNDevices(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), NetDeviceIsBridged(), NS_ASSERT, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by ProcessBridgedBroadcastLink(), and ProcessSingleBroadcastLink().

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void ns3::GlobalRouter::BuildNetworkLSAs ( NetDeviceContainer c )

private

Definition at line 1142 of file global-router-interface.cc.

Referenced by DiscoverLSAs().

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void ns3::GlobalRouter::ClearLSAs ( void )

private

Definition at line 555 of file global-router-interface.cc.

References m_LSAs, NS_LOG_FUNCTION_NOARGS, and NS_LOG_LOGIC.

Referenced by DiscoverLSAs(), and ~GlobalRouter().

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uint32_t ns3::GlobalRouter::DiscoverLSAs ( void )

Walk the connected channels, discover the adjacent routers and build the associated number of Global Routing Link State Advertisements that this router can export.

This is a fairly expensive operation in that every time it is called the current list of LSAs is built by walking connected point-to-point channels and peeking into adjacent IPV4 stacks to get address information. This is done to allow for limited dynamics of the Global Routing environment. By that we mean that you can discover new link state advertisements after a network topology change by calling DiscoverLSAs and then by reading those advertisements.

See Also: GlobalRoutingLSA; GlobalRouter::GetLSA ()

Returns: The number of Global Routing Link State Advertisements.

Definition at line 588 of file global-router-interface.cc.

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void ns3::GlobalRouter::DoDispose ( void )

privatevirtual

Definition at line 541 of file global-router-interface.cc.

References m_injectedRoutes, m_routingProtocol, and NS_LOG_FUNCTION_NOARGS.

Ipv4Address ns3::GlobalRouter::FindDesignatedRouterForLink	(	Ptr< NetDevice >	ndLocal,
		bool	allowRecursion
	)		const

private

Definition at line 1242 of file global-router-interface.cc.

References FindInterfaceForDevice(), ns3::NetDevice::GetChannel(), ns3::Channel::GetDevice(), ns3::Node::GetId(), ns3::Channel::GetNDevices(), ns3::Ipv4::GetNInterfaces(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), NetDeviceIsBridged(), NS_ASSERT, NS_LOG_FUNCTION, NS_LOG_LOGIC, and NS_LOG_WARN.

Referenced by ProcessBridgedBroadcastLink(), and ProcessSingleBroadcastLink().

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bool ns3::GlobalRouter::FindInterfaceForDevice	(	Ptr< Node >	node,
		Ptr< NetDevice >	nd,
		uint32_t &	index
	)		const

private

Definition at line 1628 of file global-router-interface.cc.

References ns3::Node::GetId(), ns3::Object::GetObject(), NS_LOG_FUNCTION_NOARGS, and NS_LOG_LOGIC.

Referenced by BuildNetworkLSAs(), DiscoverLSAs(), FindDesignatedRouterForLink(), ProcessBridgedBroadcastLink(), ProcessPointToPointLink(), and ProcessSingleBroadcastLink().

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Ptr< NetDevice > ns3::GlobalRouter::GetAdjacent	(	Ptr< NetDevice >	nd,
		Ptr< Channel >	ch
	)		const

private

Definition at line 1590 of file global-router-interface.cc.

References ns3::Channel::GetDevice(), ns3::Channel::GetNDevices(), NS_ASSERT_MSG, and NS_LOG_FUNCTION_NOARGS.

Referenced by ProcessPointToPointLink().

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Ipv4RoutingTableEntry * ns3::GlobalRouter::GetInjectedRoute ( uint32_t i )

Return the injected route indexed by i.

Parameters

i	the index of the route

Returns: a pointer to that Ipv4RoutingTableEntry is returned

Definition at line 1520 of file global-router-interface.cc.

References m_injectedRoutes, NS_ASSERT, and NS_LOG_FUNCTION.

bool ns3::GlobalRouter::GetLSA	(	uint32_t	n,
		GlobalRoutingLSA &	lsa
	)		const

Get a Global Routing Link State Advertisements that this router has said that it can export.

This is a fairly inexpensive expensive operation in that the hard work was done in GetNumLSAs. We just copy the indicated Global Routing Link State Advertisement into the requested GlobalRoutingLSA object.

You must call GlobalRouter::GetNumLSAs before calling this method in order to discover the adjacent routers and build the advertisements. GetNumLSAs will return the number of LSAs this router advertises. The parameter n (requested LSA number) must be in the range 0 to GetNumLSAs() - 1.

See Also: GlobalRoutingLSA; GlobalRouting::GetNumLSAs ()

Parameters

n	The index number of the LSA you want to read.
lsa	The GlobalRoutingLSA class to receive the LSA information.

Returns: The number of Global Router Link State Advertisements.

Definition at line 1480 of file global-router-interface.cc.

References ns3::GlobalRoutingLSA::IsEmpty(), m_LSAs, NS_ASSERT_MSG, and NS_LOG_FUNCTION_NOARGS.

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uint32_t ns3::GlobalRouter::GetNInjectedRoutes ( void )

Get the number of injected routes that have been added to the routing table.

Returns: number of injected routes

Definition at line 1543 of file global-router-interface.cc.

References m_injectedRoutes.

uint32_t ns3::GlobalRouter::GetNumLSAs ( void ) const

Get the Number of Global Routing Link State Advertisements that this router can export.

To get meaningful information you must have previously called DiscoverLSAs. After you know how many LSAs are present in the router, you may call GetLSA () to retrieve the actual advertisement.

See Also: GlobalRouterLSA; GlobalRouting::DiscoverLSAs (); GlobalRouting::GetLSA ()

Returns: The number of Global Routing Link State Advertisements.

Definition at line 1470 of file global-router-interface.cc.

References m_LSAs, and NS_LOG_FUNCTION_NOARGS.

Ipv4Address ns3::GlobalRouter::GetRouterId ( void ) const

Get the Router ID associated with this Global Router.

The Router IDs are allocated in the RoutingEnvironment – one per Router, starting at 0.0.0.1 and incrementing with each instantiation of a router.

See Also: RoutingEnvironment::AllocateRouterId ()

Returns: The Router ID associated with the Global Router.

Definition at line 575 of file global-router-interface.cc.

References m_routerId, and NS_LOG_FUNCTION_NOARGS.

Ptr< Ipv4GlobalRouting > ns3::GlobalRouter::GetRoutingProtocol ( void )

Definition at line 535 of file global-router-interface.cc.

References m_routingProtocol.

TypeId ns3::GlobalRouter::GetTypeId ( void )

static

The Interface ID of the Global Router interface.

This method returns the TypeId associated to ns3::GlobalRouter.

See Also: Object::GetObject ()

No Attributes defined for this type.
No TraceSources defined for this type.

Reimplemented from ns3::Object.

Definition at line 509 of file global-router-interface.cc.

References ns3::TypeId::SetParent().

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void ns3::GlobalRouter::InjectRoute	(	Ipv4Address	network,
		Ipv4Mask	networkMask
	)

Inject a route to be circulated to other routers as an external route.

Parameters

network	The Network to inject
networkMask	The Network Mask to inject

Definition at line 1506 of file global-router-interface.cc.

References ns3::Ipv4RoutingTableEntry::CreateNetworkRouteTo(), m_injectedRoutes, and NS_LOG_FUNCTION.

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Ptr< BridgeNetDevice > ns3::GlobalRouter::NetDeviceIsBridged ( Ptr< NetDevice > nd ) const

private

Definition at line 1658 of file global-router-interface.cc.

References ns3::Node::GetDevice(), ns3::Node::GetNDevices(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), ns3::NetDevice::IsBridge(), NS_ABORT_MSG_UNLESS, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by AnotherRouterOnLink(), DiscoverLSAs(), and FindDesignatedRouterForLink().

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GlobalRouter& ns3::GlobalRouter::operator= ( GlobalRouter & sr )

private

Global Router assignment operator is disallowed.

void ns3::GlobalRouter::ProcessBridgedBroadcastLink	(	Ptr< NetDevice >	nd,
		GlobalRoutingLSA *	pLSA,
		NetDeviceContainer &	c
	)

private

Definition at line 860 of file global-router-interface.cc.

References ns3::NetDeviceContainer::Add(), ns3::GlobalRoutingLSA::AddLinkRecord(), AnotherRouterOnLink(), ns3::Ipv4Address::CombineMask(), FindDesignatedRouterForLink(), FindInterfaceForDevice(), ns3::Ipv4Mask::Get(), ns3::Ipv4::GetAddress(), ns3::Node::GetId(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4InterfaceAddress::GetMask(), ns3::Ipv4::GetMetric(), ns3::Ipv4::GetNAddresses(), ns3::Ipv4::GetNInterfaces(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), ns3::NetDevice::IsBridge(), NS_ABORT_MSG_IF, NS_ABORT_MSG_UNLESS, NS_ASSERT_MSG, NS_LOG_FUNCTION, NS_LOG_LOGIC, NS_LOG_WARN, ns3::Ipv4Address::Set(), ns3::GlobalRoutingLinkRecord::SetLinkData(), ns3::GlobalRoutingLinkRecord::SetLinkId(), ns3::GlobalRoutingLinkRecord::SetLinkType(), ns3::GlobalRoutingLinkRecord::SetMetric(), ns3::GlobalRoutingLinkRecord::StubNetwork, and ns3::GlobalRoutingLinkRecord::TransitNetwork.

Referenced by ProcessBroadcastLink().

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void ns3::GlobalRouter::ProcessBroadcastLink	(	Ptr< NetDevice >	nd,
		GlobalRoutingLSA *	pLSA,
		NetDeviceContainer &	c
	)

private

Definition at line 736 of file global-router-interface.cc.

References ns3::NetDevice::IsBridge(), NS_LOG_FUNCTION, ProcessBridgedBroadcastLink(), and ProcessSingleBroadcastLink().

Referenced by DiscoverLSAs().

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void ns3::GlobalRouter::ProcessPointToPointLink	(	Ptr< NetDevice >	ndLocal,
		GlobalRoutingLSA *	pLSA
	)

private

Definition at line 1021 of file global-router-interface.cc.

References ns3::GlobalRoutingLSA::AddLinkRecord(), FindInterfaceForDevice(), ns3::Ipv4Mask::Get(), ns3::Ipv4::GetAddress(), GetAdjacent(), ns3::NetDevice::GetChannel(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4InterfaceAddress::GetMask(), ns3::Ipv4::GetMetric(), ns3::Ipv4::GetNAddresses(), ns3::Ipv4::GetNInterfaces(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), ns3::Ipv4::IsUp(), NS_ABORT_MSG_IF, NS_ABORT_MSG_UNLESS, NS_LOG_FUNCTION, NS_LOG_LOGIC, NS_LOG_WARN, ns3::GlobalRoutingLinkRecord::PointToPoint, ns3::GlobalRoutingLinkRecord::SetLinkData(), ns3::GlobalRoutingLinkRecord::SetLinkId(), ns3::GlobalRoutingLinkRecord::SetLinkType(), ns3::GlobalRoutingLinkRecord::SetMetric(), and ns3::GlobalRoutingLinkRecord::StubNetwork.

Referenced by DiscoverLSAs().

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void ns3::GlobalRouter::ProcessSingleBroadcastLink	(	Ptr< NetDevice >	nd,
		GlobalRoutingLSA *	pLSA,
		NetDeviceContainer &	c
	)

private

Definition at line 751 of file global-router-interface.cc.

References ns3::NetDeviceContainer::Add(), ns3::GlobalRoutingLSA::AddLinkRecord(), AnotherRouterOnLink(), ns3::Ipv4Address::CombineMask(), FindDesignatedRouterForLink(), FindInterfaceForDevice(), ns3::Ipv4Mask::Get(), ns3::Ipv4::GetAddress(), ns3::Node::GetId(), ns3::Ipv4InterfaceAddress::GetLocal(), ns3::Ipv4InterfaceAddress::GetMask(), ns3::Ipv4::GetMetric(), ns3::Ipv4::GetNAddresses(), ns3::Ipv4::GetNInterfaces(), ns3::NetDevice::GetNode(), ns3::Object::GetObject(), NS_ABORT_MSG_IF, NS_ABORT_MSG_UNLESS, NS_LOG_FUNCTION, NS_LOG_LOGIC, NS_LOG_WARN, ns3::Ipv4Address::Set(), ns3::GlobalRoutingLinkRecord::SetLinkData(), ns3::GlobalRoutingLinkRecord::SetLinkId(), ns3::GlobalRoutingLinkRecord::SetLinkType(), ns3::GlobalRoutingLinkRecord::SetMetric(), ns3::GlobalRoutingLinkRecord::StubNetwork, and ns3::GlobalRoutingLinkRecord::TransitNetwork.

Referenced by ProcessBroadcastLink().

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void ns3::GlobalRouter::RemoveInjectedRoute ( uint32_t i )

Withdraw a route from the global unicast routing table.

Calling this function will cause all indexed routes numbered above index i to have their index decremented. For instance, it is possible to remove N injected routes by calling RemoveInjectedRoute (0) N times.

Parameters