Class Layer2Endpoint

java.lang.Object

Layer2Handler

Layer2Endpoint

All Implemented Interfaces:

BitListener

public class Layer2Endpoint
extends Layer2Handler
implements BitListener

A Layer2Endpoint represents a Layer 2 entity that has a MAC address hard-wired for it. Thus, it represents a host or device on the network that can generate and receive layer 2 frames. It is not used for a switch, e.g., where the interfaces do not have MAC addresses. The class is a subclass of Layer2Handler, overriding only the dropReceivedFrame(), to drop frames with destination that isn't bcast or this endpoint's mac address.

Constructor Summary

Constructors

Constructor and Description
Layer2Endpoint(int macAddr) Constructor: store the macAddr that identifies this endpoint, and use the super class to create a layer 2 object that we use to send/receive frames.
Layer2Endpoint(java.lang.String host, int port, int macAddr) Constructor: store the macAddr that identifies this endpoint, and use the super class to create a layer 2 object that we use to send/receive frames.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	dropReceivedFrame(Layer2Frame fr, java.lang.String bits) drop received frames that do not have either a bcast destination mac address or this endpoint's destination mac address.
int	getMacAddr() return the mac address of this endpoint.
int	getVlanId() return the vlanId of this endpoint.
java.lang.String	toString() A string representation of this object -- the mac address.

Methods inherited from class Layer2Handler

bitsReceived, send, setListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface BitListener

bitsReceived

Constructor Detail

Layer2Endpoint

public Layer2Endpoint(int macAddr)

Constructor: store the macAddr that identifies this endpoint, and use the super class to create a layer 2 object that we use to send/receive frames. Use the default "localhost" and DEFAULT_PORT to identify the LightSystem to connect to.

Layer2Endpoint

public Layer2Endpoint(java.lang.String host,
              int port,
              int macAddr)

Constructor: store the macAddr that identifies this endpoint, and use the super class to create a layer 2 object that we use to send/receive frames. Takes a host and TCP port to identify the LightSystem to connect to.

Method Detail

toString

public java.lang.String toString()

A string representation of this object -- the mac address.

Overrides:

toString in class java.lang.Object

getMacAddr

public int getMacAddr()

return the mac address of this endpoint.

getVlanId

public int getVlanId()

return the vlanId of this endpoint.

dropReceivedFrame

public boolean dropReceivedFrame(Layer2Frame fr,
                        java.lang.String bits)

drop received frames that do not have either a bcast destination mac address or this endpoint's destination mac address.

Overrides:

dropReceivedFrame in class Layer2Handler