This class implements the Path MTU cache, as defined by RFC 1981. More...

#include <ipv6-pmtu-cache.h>

Inheritance diagram for ns3::Ipv6PmtuCache:

Collaboration diagram for ns3::Ipv6PmtuCache:

Public Member Functions
	Ipv6PmtuCache ()
	Constructor.
	~Ipv6PmtuCache ()
	Destructor.
virtual void	DoDispose ()
	Dispose object.
uint32_t	GetPmtu (Ipv6Address dst)
	Gets the known Path MTU for the specific destination.
Time	GetPmtuValidityTime () const
	Gets the Path MTU validity time.
void	SetPmtu (Ipv6Address dst, uint32_t pmtu)
	Sets the Path MTU for the specific destination.
bool	SetPmtuValidityTime (Time validity)
	Sets the Path MTU validity time (minimum is 5 minutes)
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	Initialize (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 ()
	Get the type ID.

Private Types
typedef std::map< Ipv6Address, EventId >::iterator	pathMtuTimerIter

Private Member Functions
void	ClearPmtu (Ipv6Address dst)
	Clears the Path MTU for the specific destination.

Private Attributes
std::map< Ipv6Address, uint32_t >	m_pathMtu
	Path MTU table.
std::map< Ipv6Address, EventId >	m_pathMtuTimer
	Path MTU Expiration table.
Time	m_validityTime
	Path MTU entry validity time.

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

Detailed Description

This class implements the Path MTU cache, as defined by RFC 1981.

The Path MTU is stored according to the destination address, and it is cleared upon expiration (default validity time is 10 minutes).

The "infinite lifetime" PMTU entry type is not implemented, since it is useful only in an very limited number of cases. See the RFC for further details.

Doxygen introspection did not find any typical Config paths.

Attributes

CacheExpiryTime: Validity time for a Path MTU entry. Default is 10 minutes, minimum is 5 minutes.
- Set with class: ns3::TimeValue
- Underlying type: Time +300000000000.0ns:+9223372036854775807.0ns
- Initial value: +600000000000.0ns
- Flags: construct write read