aodv.tcl

一个无线自组网aodv路由的扩展版---AOMDV（多径路由协议）。

#
## The AODV code developed by the CMU/MONARCH group was optimized
## and tuned by Samir Das and Mahesh Marina, University of Cincinnati. The 
## work was partially done in Sun Microsystems.

#	The original CMU copyright is below. 
#Copyright (c) 1997, 1998 Carnegie Mellon University.  All Rights
#Reserved. 

#Permission to use, copy, modify, and distribute this
#software and its documentation is hereby granted (including for
#commercial or for-profit use), provided that both the copyright notice
#and this permission notice appear in all copies of the software,
#derivative works, or modified versions, and any portions thereof, and
#that both notices appear in supporting documentation, and that credit
#is given to Carnegie Mellon University in all publications reporting
#on direct or indirect use of this code or its derivatives.
#
#ALL CODE, SOFTWARE, PROTOCOLS, AND ARCHITECTURES DEVELOPED BY THE CMU
#MONARCH PROJECT ARE EXPERIMENTAL AND ARE KNOWN TO HAVE BUGS, SOME OF
#WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON PROVIDES THIS
#SOFTWARE OR OTHER INTELLECTUAL PROPERTY IN ITS ``AS IS'' CONDITION,
#AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
#THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
#PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
#BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
#CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
#SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
#BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
#OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE OR
#INTELLECTUAL PROPERTY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
#DAMAGE.

#Carnegie Mellon encourages (but does not require) users of this
#software or intellectual property to return any improvements or
#extensions that they make, and to grant Carnegie Mellon the rights to
#redistribute these changes without encumbrance.

# ======================================================================
# Default Script Options
# ======================================================================

set opt(ragent)		Agent/rtProto/AODV
set opt(pos)		NONE

if { $opt(pos) != "NONE" } {
	puts "*** WARNING: AODV using $opt(pos) position configuration..."
}

# ======================================================================
Agent instproc init args {
        $self next $args
}       
Agent/rtProto instproc init args {
        $self next $args
}       
Agent/rtProto/AODV instproc init args {
        $self next $args
}       

Agent/rtProto/AODV set sport_	0
Agent/rtProto/AODV set dport_	0
Agent/rtProto/AODV set send_buffer_size_	0
Agent/rtProto/AODV set send_buffer_timeout_	0
Agent/rtProto/AODV set aomdv_max_paths_	0
Agent/rtProto/AODV set aomdv_prim_alt_path_len_diff_	0

# ======================================================================

proc create-routing-agent { node id } {
	global ns_ ragent_ tracefd opt

	#
	#  Create the Routing Agent and attach it to port 255.
	#
	set ragent_($id) [new $opt(ragent) $id]
	set ragent $ragent_($id)
	$node attach $ragent 255

	$ragent if-queue [$node set ifq_(0)]	;# ifq between LL and MAC
	$ns_ at 0.$id "$ragent_($id) start"	;# start BEACON/HELLO Messages

	#
	# Drop Target (always on regardless of other tracing)
	#
	set drpT [cmu-trace Drop "RTR" $node]
	$ragent drop-target $drpT
	
	#
	# Log Target
	#
	set T [new Trace/Generic]
	$T target [$ns_ set nullAgent_]
	$T attach $tracefd
	$T set src_ $id
	$ragent log-target $T
}


proc create-mobile-node { id } {
	global ns_ chan prop topo tracefd opt node_
	global chan prop tracefd topo opt

	set node_($id) [new MobileNode]

	set node $node_($id)
	$node random-motion 0		;# disable random motion
	$node topography $topo

	#
	# This Trace Target is used to log changes in direction
	# and velocity for the mobile node.
	#
	set T [new Trace/Generic]
	$T target [$ns_ set nullAgent_]
	$T attach $tracefd
	$T set src_ $id
	$node log-target $T

	$node add-interface $chan $prop $opt(ll) $opt(mac)	\
		$opt(ifq) $opt(ifqlen) $opt(netif) $opt(ant)

	#
	# Create a Routing Agent for the Node
	#
	create-routing-agent $node $id

	# ============================================================

	if { $opt(pos) == "Box" } {

            set spacing 200
            set maxrow 3
            set col [expr ($id - 1) % $maxrow]
            set row [expr ($id - 1) / $maxrow]
            $node set X_ [expr $col * $spacing]
            $node set Y_ [expr $row * $spacing]
            $node set Z_ 0.0
            $node set speed_ 0.0

            $ns_ at 0.0 "$node_($id) start"

	} elseif { $opt(pos) == "Random" } {

            $node random-motion 1

            $ns_ at 0.0 "$node_($id) start"
        }
        
}