SSF.OS.OSPFv2
Class OwnLSASlot

java.lang.Object
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  +--SSF.OS.OSPFv2.LSASlot
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        +--SSF.OS.OSPFv2.OwnLSASlot

public class OwnLSASlot

extends LSASlot

This class extends LSASlot. It implements two additional timer to guarantee first periodic originations of new instances of the LSA, stored here at the moment, and second protection of too many recreations of the LSA. Only selforiginated LSAs can be stored here! It is further assumed, that every time a new instance is installed it is also originated.

Nested Class Summary

class	OwnLSASlot.LSRefreshTimer /* The LSRefreshTimer waits OSPF LS_REFRESH_TIME time before it declares the LSA stored here to be outdated.
class	OwnLSASlot.MinimumIntervalTimer /* The MinimumIntervalTimer waits minLSInterval seconds before it cancels the write-protection for the LSA stored in the Slot.

Field Summary

long	lsRefreshTime long value indicating duration of the LSRefreshTimer.
OwnLSASlot.LSRefreshTimer	lsRefreshTimer After expiration of this timer a new instance of the stored LSA should be originated.
OwnLSASlot.MinimumIntervalTimer	minLSInstTimer After expiration of this timer a new instance of the stored LSA can be installed.
long	minLSInterval long value indicating duration of the MinimumIntervalTimer.
AreaData	myArea A link to the Area this Slot belongs to.
int	nextSeqNum The sequence number for the next instance of the selforiginated LSA stored in this slot.

Fields inherited from class SSF.OS.OSPFv2.LSASlot

installTime, lsa, myOSPF, receivingAge

Constructor Summary

OwnLSASlot(LSA lsa, OSPF myOSPF, AreaData myArea)

Method Summary

void	install(LSA adv) installs a new instance of an existing LSA in this slot.
boolean	lsaIsProtected() Check whether installation of the LSA stored here was at least MIN_LS_ITVL seconds ago.

Methods inherited from class SSF.OS.OSPFv2.LSASlot

ageLSA, getLSA, getLSAHeader, lsaHasMaxAge

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

nextSeqNum

public int nextSeqNum

The sequence number for the next instance of the selforiginated LSA stored in this slot.

minLSInterval

public long minLSInterval

long value indicating duration of the MinimumIntervalTimer.

lsRefreshTime

public long lsRefreshTime

long value indicating duration of the LSRefreshTimer.

myArea

public AreaData myArea

A link to the Area this Slot belongs to.

minLSInstTimer

public OwnLSASlot.MinimumIntervalTimer minLSInstTimer

After expiration of this timer a new instance of the stored LSA can be installed.

lsRefreshTimer

public OwnLSASlot.LSRefreshTimer lsRefreshTimer

After expiration of this timer a new instance of the stored LSA should be originated.

Constructor Detail

OwnLSASlot

public OwnLSASlot(LSA lsa,
                  OSPF myOSPF,
                  AreaData myArea)

Method Detail

install

public void install(LSA adv)
             throws ProtocolException

installs a new instance of an existing LSA in this slot.

Overrides:

install in class LSASlot

ProtocolException

lsaIsProtected

public boolean lsaIsProtected()

Check whether installation of the LSA stored here was at least MIN_LS_ITVL seconds ago.

Returns:

the value of isProtected.