drcl.inet.protocol.ospf
Class OSPF_Interface

java.lang.Object
  |
  +--drcl.inet.protocol.ospf.OSPF_Interface

public class OSPF_Interface

extends java.lang.Object

class OSPF_Interface An OSPF interface is the connection between a router and a network. One or more router adjacencies may develop over an interface. A router's LSAs reflect the state of its interfaces and their associated adjacencies. ref: sec 9

Author:

Wei-peng Chen

See Also:

OSPF, OSPF_Neighbor, OSPF_TimeOut_EVT

Field Summary

protected OSPF_TimeOut_EVT	Ack_Delay_Reach_EVT
protected OSPF_Area	area A router interface belongs to one and only one area
protected int	cost Cost for transmitting a packet over this interface, must be greater than zero
protected int	dead_interval the # of second before the neighbor is declared to be down
protected int	hello_interval the # of second between hello pkts are sent over this interface
protected OSPF_TimeOut_EVT	Hello_TimeOut_EVT
protected int	if_id
protected int	ifmtu I/F MTU
protected long	lladdr
protected java.util.Vector	lsa_delayed_ack LSAs to Delayed Acknowledge
protected java.util.Vector	neighbor_list list of ospf neighbor over this interface
protected int	ospf_stat_delayed_lsack
protected int	ospf_stat_dr_election
protected int	rxmt_interval The number of seconds between LSA retransmissions, for adjacencies belonging to this interface.
protected int	state
protected int	transdelay I/F transmission delay, the approximate delay over this link
protected int	type the type info from interface, default value: IF_PTOP

Constructor Summary

protected

OSPF_Interface() Constructor

Method Summary

protected void	add_new_neighbor(OSPF_Neighbor nbr) Add one new neighbor to this interface
protected void	clear() Disable all timer
protected int	if_is_pointopoint() Check whther this interface is the type of point-to-point
java.lang.String	info(java.lang.String prefix_)
protected int	Interface_Down()
protected int	Interface_Up() Never called in this implemented since we use CSL hello service Interface_UP event is trigger be NEIGHBOR_UP event
protected int	neighbor_change() Oe of the neighbors associated with this interface change its state
protected int	ospf_interface_count_full_nbr() count number of full neighbor adjacent to this interface
static OSPF_Interface	ospf_interface_create(int if_index, int type_, int mtu_, OSPF_Area area_) Constructor: Create new ospf6 interface structure In our implementation, this function is called when OSPF receives NEIGHBOR_UP event so that the state of interface is UP
protected OSPF_Neighbor	ospf_nbr_lookup_by_routerid(long id) Lookup the neighbor associated with this interface with router id
protected void	remove_neighbor(OSPF_Neighbor nbr) Remove one new neighbor to this interface
void	reset()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

if_id

protected int if_id

area

protected OSPF_Area area

A router interface belongs to one and only one area

type

protected int type

the type info from interface, default value: IF_PTOP

state

protected int state

lladdr

protected long lladdr

hello_interval

protected int hello_interval

the # of second between hello pkts are sent over this interface

dead_interval

protected int dead_interval

the # of second before the neighbor is declared to be down

transdelay

protected int transdelay

I/F transmission delay, the approximate delay over this link

Hello_TimeOut_EVT

protected OSPF_TimeOut_EVT Hello_TimeOut_EVT

Ack_Delay_Reach_EVT

protected OSPF_TimeOut_EVT Ack_Delay_Reach_EVT

neighbor_list

protected java.util.Vector neighbor_list

list of ospf neighbor over this interface

cost

protected int cost

Cost for transmitting a packet over this interface, must be greater than zero

rxmt_interval

protected int rxmt_interval

The number of seconds between LSA retransmissions, for adjacencies belonging to this interface. Also used when retransmitting Database Description and Link State Request Packets.

lsa_delayed_ack

protected java.util.Vector lsa_delayed_ack

LSAs to Delayed Acknowledge

ifmtu

protected int ifmtu

I/F MTU

ospf_stat_dr_election

protected int ospf_stat_dr_election

ospf_stat_delayed_lsack

protected int ospf_stat_delayed_lsack

Constructor Detail

OSPF_Interface

protected OSPF_Interface()

Constructor

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

info

public java.lang.String info(java.lang.String prefix_)

reset

public void reset()

clear

protected void clear()

Disable all timer

ospf_interface_create

public static OSPF_Interface ospf_interface_create(int if_index,
                                                   int type_,
                                                   int mtu_,
                                                   OSPF_Area area_)

Constructor: Create new ospf6 interface structure In our implementation, this function is called when OSPF receives NEIGHBOR_UP event so that the state of interface is UP

ospf_interface_count_full_nbr

protected int ospf_interface_count_full_nbr()

count number of full neighbor adjacent to this interface

Interface_Up

protected int Interface_Up()

Never called in this implemented since we use CSL hello service Interface_UP event is trigger be NEIGHBOR_UP event

Interface_Down

protected int Interface_Down()

neighbor_change

protected int neighbor_change()

Oe of the neighbors associated with this interface change its state

ospf_nbr_lookup_by_routerid

protected OSPF_Neighbor ospf_nbr_lookup_by_routerid(long id)

Lookup the neighbor associated with this interface with router id

if_is_pointopoint

protected int if_is_pointopoint()

Check whther this interface is the type of point-to-point

add_new_neighbor

protected void add_new_neighbor(OSPF_Neighbor nbr)

Add one new neighbor to this interface

remove_neighbor

protected void remove_neighbor(OSPF_Neighbor nbr)

Remove one new neighbor to this interface