org.onosproject.provider.lldpcommon

Class LinkDiscovery

java.lang.Object

org.onosproject.provider.lldpcommon.LinkDiscovery

All Implemented Interfaces:

org.jboss.netty.util.TimerTask

public class LinkDiscovery
extends Object
implements org.jboss.netty.util.TimerTask

Run discovery process from a physical switch. Ports are initially labeled as slow ports. When an LLDP is successfully received, label the remote port as fast. Every probeRate milliseconds, loop over all fast ports and send an LLDP, send an LLDP for a single slow port. Based on FlowVisor topology discovery implementation.

Constructor Summary

Constructors

Constructor and Description
LinkDiscovery(org.onosproject.net.Device device, LinkDiscoveryContext context) Instantiates discovery manager for the given physical switch.

Method Summary

Modifier and Type	Method and Description
void	addPort(org.onosproject.net.Port port) Add physical port to discovery process.
boolean	containsPort(long portNumber)
boolean	handleLldp(org.onosproject.net.packet.PacketContext packetContext) Handles an incoming LLDP packet.
boolean	isStopped()
void	removePort(org.onosproject.net.PortNumber port) removed physical port from discovery process.
void	run(org.jboss.netty.util.Timeout t) Execute this method every t milliseconds.
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

LinkDiscovery

public LinkDiscovery(org.onosproject.net.Device device,
                     LinkDiscoveryContext context)

Instantiates discovery manager for the given physical switch. Creates a generic LLDP packet that will be customized for the port it is sent out on. Starts the the timer for the discovery process.

Parameters:

device - the physical switch

context - discovery context

Method Detail

stop

public void stop()

start

public void start()

isStopped

public boolean isStopped()

addPort

public void addPort(org.onosproject.net.Port port)

Add physical port to discovery process. Send out initial LLDP and label it as slow port.

Parameters:

port - the port

removePort

public void removePort(org.onosproject.net.PortNumber port)

removed physical port from discovery process.

Parameters:

port - the port number

handleLldp

public boolean handleLldp(org.onosproject.net.packet.PacketContext packetContext)

Handles an incoming LLDP packet. Creates link in topology and adds the link for staleness tracking.

Parameters:

packetContext - packet context

Returns:

true if handled

run

public void run(org.jboss.netty.util.Timeout t)

Execute this method every t milliseconds. Loops over all ports labeled as fast and sends out an LLDP. Send out an LLDP on a single slow port.

Specified by:

run in interface org.jboss.netty.util.TimerTask

Parameters:

t - timeout

containsPort

public boolean containsPort(long portNumber)