gov.nist.antd.mpls.mgmt.mpls_interface
Class MPLSREDQueue

java.lang.Object
  |
  +--gov.nist.antd.diffserv.SimplePacketQueue
        |
        +--gov.nist.antd.mpls.mgmt.mpls_interface.MPLSQueue
              |
              +--gov.nist.antd.mpls.mgmt.mpls_interface.MPLSREDQueue

public class MPLSREDQueue

extends MPLSQueue

MPLS RED Queue.

 RED (Random Early Detection) with algorithmic drop
  Ref. 
	[1] RFC 2309 Recommendations on Queue Management and Congestion
	     avoidance in Internet, April 1998.
	[2] Sally Floyd and Van Jacobson, "Random Early Detection Gateways for
	     congestion Avoidance, IEEE/ACM Tansactions on Networking, 
	     Vol. 1, No. 4, August 1993.
 

 This class was developed at the National Institute of Standards and
 Technology by employees of the Federal Government in the course of
 their official duties. Pursuant to title 17 Section 105 of the United
 States Code this software is not subject to copyright protection and
 is in the public domain.
 NIST assumes no responsibility whatsoever for its use by other parties,
 and makes no guarantees, expressed or implied, about its quality,
 reliability, or any other characteristic.
 

 We would appreciate acknowledgement if the software is used.
 

 NIST ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND
 DISCLAIM ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING
 FROM THE USE OF THIS SOFTWARE.
 

Author:

EunHyuk Lim (ehlim@antd.nist.gov, othree28@hotmail.com)

, borchert , Chul Kim

Field Summary

double	avgQlength Field avgQlength - Average queue length
int	count Field count
int	mean_pkt_size Field mean_pkt_size - Mean Packet size
double	Pa Field Pa, Pb
double	Pb Field Pa, Pb
double	Pmax Field Pmax
double	q_time Field q_time - the time when the queue became empty
boolean	QueueEmpty Field QueueEmpty - Queue Emptyr flag
double	QueueWeight Field QueueWeight - weighting factor to calculate average queue size
double	THmax Field THmax - Maximum Threshold
double	THmin Field THmin - Mininum Threshold

Fields inherited from class gov.nist.antd.mpls.mgmt.mpls_interface.MPLSQueue

BitRate, BufferSize, debug, dequeueCount, dropBytes, dropCount, HostID, incomingBytes, incomingCount, isActive, isWFQ, localHost, mplsInterfaceInfo, nextEFt, outgoingBytes, outgoingCount, prevdropBytes, prevdropCount, prevEFt, previncomingBytes, previncomingCount, prevoutgoingBytes, prevoutgoingCount, Priority, Rx, Scheduler, SumOfWeight, totalQueueingDelay, Weight

Fields inherited from class gov.nist.antd.diffserv.SimplePacketQueue

Constructor Summary

MPLSREDQueue()
Constructor MPLSREDQueue

Method Summary

private void	calculateAvgQlength()
MessageWrapper	dequeue() Method dequeue
void	displayQueueInfo() Method displayQueueInfo
boolean	enqueue(ProtocolMessage message, ProtocolSession fromSession) Method enqueue Enqueue the packet
void	init(MPLSInterfaceInfo minfo) Initializes the Queue.
java.lang.String	toString() Method toString

Methods inherited from class gov.nist.antd.mpls.mgmt.mpls_interface.MPLSQueue

calculatEFtForWFQ, configWFQParms, configWFQParms, getAvgQueueingDelay, getDropPacketBytes, getDropPacketCount, getIncomingPacketBytes, getIncomingPacketCount, getOutgoingPacketBytes, getOutgoingPacketCount, setBitRate, setBufferSize, setPriorityWeight, setScheduler, setupWFQParms

Methods inherited from class gov.nist.antd.diffserv.SimplePacketQueue

getAvailableQLength, getFirstPacket, getMaxSize, getQLength, init, isEmpty, isFull, reset, setMaxSize

Methods inherited from class java.lang.Object

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

Field Detail

THmin

public double THmin

Field THmin - Mininum Threshold

THmax

public double THmax

Field THmax - Maximum Threshold

Pmax

public double Pmax

Field Pmax

mean_pkt_size

public int mean_pkt_size

Field mean_pkt_size - Mean Packet size

QueueWeight

public double QueueWeight

Field QueueWeight - weighting factor to calculate average queue size

avgQlength

public double avgQlength

Field avgQlength - Average queue length

q_time

public double q_time

Field q_time - the time when the queue became empty

Pa

public double Pa

Field Pa, Pb

Pb

public double Pb

Field Pa, Pb

count

public int count

Field count

QueueEmpty

public boolean QueueEmpty

Field QueueEmpty - Queue Emptyr flag

Constructor Detail

MPLSREDQueue

public MPLSREDQueue()

Constructor MPLSREDQueue

Method Detail

init

public void init(MPLSInterfaceInfo minfo)

Initializes the Queue.

Overrides:

init in class MPLSQueue

Parameters:

minfo - The MPLSInterfaceInfo

calculateAvgQlength

private void calculateAvgQlength()

enqueue

public boolean enqueue(ProtocolMessage message,
                       ProtocolSession fromSession)

Method enqueue Enqueue the packet

Overrides:

enqueue in class MPLSQueue

Parameters:

message -

fromSession -

Returns:

boolean

dequeue

public MessageWrapper dequeue()

Method dequeue

Overrides:

dequeue in class MPLSQueue

Returns:

The dequeued message wrapper.

displayQueueInfo

public void displayQueueInfo()

Method displayQueueInfo

Overrides:

displayQueueInfo in class MPLSQueue

toString

public java.lang.String toString()

Method toString

Overrides:

toString in class MPLSQueue

Returns:

String - XXX