jist.swans.route
Class RouteZrpNdp

java.lang.Object
  jist.swans.route.RouteZrpNdp

All Implemented Interfaces:

Protocol, Timer, RouteInterface.Zrp.Ndp

public class RouteZrpNdp
extends java.lang.Object
implements RouteInterface.Zrp.Ndp, Timer

Zone Routing Protocol: Node Discovery (sub)Protocol: Default implementation.

Since:

SWANS1.0

Version:

$Id: RouteZrpNdp.java,v 1.14 2004/04/06 16:07:51 barr Exp $

Author:

Rimon Barr <barr+jist@cs.cornell.edu>

Nested Class Summary

private static class	RouteZrpNdp.MessageNdp NDP (Node Discovery Protocol) packet.
private static class	RouteZrpNdp.NeighbourState NDP neighbour entry.

Field Summary

static long	JITTER jitter.
static short	LIFETIME_BEATS heartbeats until link expiration.
static org.apache.log4j.Logger	logNDP logger for NDP events.
private java.util.HashMap	neighbours list of neighbours: NetAddress - NeighbourState.
static long	PERIOD heartbeat period.
private RouteZrp	zrp reference to zrp routing framework.

Constructor Summary

RouteZrpNdp(RouteZrp zrp)
Create new "default" NDP (ZRP sub-protocol) handler.

RouteZrpNdp(RouteZrp zrp, java.lang.String config)
Create new "default" NDP (ZRP sub-protocol) handler.

Method Summary

MacAddress	getMacAddress(NetAddress addr) Return mac address of neighbour.
byte	getMacId(NetAddress addr) Return mac entity for neighbour.
NetAddress[]	getNeighbours() Return neighbours.
int	getNumNeighbours() Return number of neighbours.
boolean	isNeighbour(NetAddress addr) Whether given address is a neighbour.
void	receive(RouteInterface.Zrp.MessageNdp msg, NetAddress src, MacAddress macAddr, byte macId) Process incoming NDP packet.
void	start() Start running protocol.
void	timeout() Timer expiration processing.

Methods inherited from class java.lang.Object

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

Field Detail

logNDP

public static final org.apache.log4j.Logger logNDP

logger for NDP events.

PERIOD

public static final long PERIOD

heartbeat period.

See Also:

Constant Field Values

JITTER

public static final long JITTER

jitter.

See Also:

Constant Field Values

LIFETIME_BEATS

public static final short LIFETIME_BEATS

heartbeats until link expiration.

See Also:

Constant Field Values

zrp

private RouteZrp zrp

reference to zrp routing framework.

neighbours

private java.util.HashMap neighbours

list of neighbours: NetAddress - NeighbourState.

Constructor Detail

RouteZrpNdp

public RouteZrpNdp(RouteZrp zrp)

Create new "default" NDP (ZRP sub-protocol) handler.

Parameters:

zrp - object reference to zrp routing framework

RouteZrpNdp

public RouteZrpNdp(RouteZrp zrp,
                   java.lang.String config)

Create new "default" NDP (ZRP sub-protocol) handler.

Parameters:

zrp - object reference to zrp routing framework

config - configuration string

Method Detail

start

public void start()

Start running protocol.

Specified by:

start in interface Protocol

receive

public void receive(RouteInterface.Zrp.MessageNdp msg,
                    NetAddress src,
                    MacAddress macAddr,
                    byte macId)

Process incoming NDP packet.

Specified by:

receive in interface RouteInterface.Zrp.Ndp

Parameters:

msg - ndp packet

src - network address of incoming packet

macAddr - link source address of incoming packet

macId - interface of incoming packet

getMacAddress

public MacAddress getMacAddress(NetAddress addr)

Return mac address of neighbour.

Specified by:

getMacAddress in interface RouteInterface.Zrp.Ndp

Parameters:

addr - ip address of neighbour

Returns:

mac address of neighbour, or null if unknown

getMacId

public byte getMacId(NetAddress addr)

Return mac entity for neighbour.

Specified by:

getMacId in interface RouteInterface.Zrp.Ndp

Parameters:

addr - ip address of neighbour

Returns:

mac interface id for neighbour, or null if unknown

getNeighbours

public NetAddress[] getNeighbours()

Return neighbours.

Specified by:

getNeighbours in interface RouteInterface.Zrp.Ndp

Returns:

array of neighbours

getNumNeighbours

public int getNumNeighbours()

Return number of neighbours.

Specified by:

getNumNeighbours in interface RouteInterface.Zrp.Ndp

Returns:

number of neighbours

isNeighbour

public boolean isNeighbour(NetAddress addr)

Whether given address is a neighbour.

Specified by:

isNeighbour in interface RouteInterface.Zrp.Ndp

Parameters:

addr - address to check

Returns:

whether given address is a neighbour

timeout

public void timeout()

Timer expiration processing.

Specified by:

timeout in interface Timer