Hi all,
I have some question in simulation of mobile ip multicast, MIP-BT need HA
join-group the multicast tree.
First, in multicast tcl script, HA join the multicast by the way as belows:
for {set i 1} {$i < 2} {incr i} {
set rcvr($i) [new Agent/Null]
$ns_ attach-agent $HA $rcvr($i)
$ns_ at $i "$HA join-group $rcvr($i) $g_"
}
Question1: if HA is considered as receiver, then how to configure the MH ?
Question2: run the tcl script produce some error
[EMAIL PROTECTED] /home/cxh
$ ns test_mip_multicast1.tcl
num_nodes is set 3
warning: Please use -channel as shown in tcl/ex/wireless-mitf.tcl
INITIALIZE THE LIST xListHead
ns: _o221 drop 4194305 -1 -1: can't read "protocols_(-1)": no such variable
while executing
"$protocols_($iface) drop $replicator $src $dst $iface"
(procedure "_o114" line 3)
(mrtObject drop line 3)
invoked from within
"[$node_ getArbiter] drop $self $src $dst $iface"
(procedure "_o221" line 3)
(Classifier/Replicator/Demuxer drop line 3)
invoked from within
"_o221 drop 4194305 -1 -1"
i don't know how to solove it.
the whole tcl script is as belows:
# simulation of a wired-cum-wireless topology running with mobileIP
# ======================================================================
# Define options
# ======================================================================
set opt(chan) Channel/WirelessChannel ;# channel type
set opt(prop) Propagation/TwoRayGround ;# radio-propagation model
set opt(netif) Phy/WirelessPhy ;# network interface type
set opt(mac) Mac/802_11 ;# MAC type
set opt(ifq) Queue/DropTail/PriQueue ;# interface queue type
set opt(ll) LL ;# link layer type
set opt(ant) Antenna/OmniAntenna ;# antenna model
set opt(ifqlen) 50 ;# max packet in ifq
set opt(nn) 1 ;# number of mobilenodes
set opt(adhocRouting) DSDV ;# routing protocol
set opt(cp) "" ;# cp file not used
set opt(sc) "" ;# node movement file.
set opt(x) 670 ;# x coordinate of topology
set opt(y) 670 ;# y coordinate of topology
set opt(seed) 0.0 ;# random seed
set opt(stop) 250 ;# time to stop simulation
set opt(ftp1-start) 100.0
set num_wired_nodes 2
#set num_bs_nodes 2 ; this is not really used here.
# ======================================================================
# check for boundary parameters and random seed
if { $opt(x) == 0 || $opt(y) == 0 } {
puts "No X-Y boundary values given for wireless topology\n"
}
if {$opt(seed) > 0} {
puts "Seeding Random number generator with $opt(seed)\n"
ns-random $opt(seed)
}
set ns_ [new Simulator]
set tracefd [open wireless3-out.tr w]
set namtrace [open wireless3-out.nam w]
$ns_ trace-all $tracefd
$ns_ namtrace-all-wireless $namtrace $opt(x) $opt(y)
$ns_ node-config -addressType hierarchical
$ns_ multicast on
set g_ [Node allocaddr]
AddrParams set domain_num_ 3 ;# number of domains
lappend cluster_num 2 1 1 ;# number of clusters in each domain
AddrParams set cluster_num_ $cluster_num
lappend eilastlevel 1 1 2 1 ;# number of nodes in each cluster
AddrParams set nodes_num_ $eilastlevel ;# of each domain
# Create topography object
set topo [new Topography]
# define topology
$topo load_flatgrid $opt(x) $opt(y)
# create God
# 2 for HA and FA
create-god [expr $opt(nn) + 2]
#create wired nodes
set temp {0.0.0 0.1.0} ;# hierarchical addresses
for {set i 0} {$i < $num_wired_nodes} {incr i} {
set W($i) [$ns_ node [lindex $temp $i]]
}
# Configure for ForeignAgent and HomeAgent nodes
$ns_ node-config -mobileIP ON \
-adhocRouting $opt(adhocRouting) \
-llType $opt(ll) \
-macType $opt(mac) \
-ifqType $opt(ifq) \
-ifqLen $opt(ifqlen) \
-antType $opt(ant) \
-propType $opt(prop) \
-phyType $opt(netif) \
-channelType $opt(chan) \
-topoInstance $topo \
-wiredRouting ON \
-agentTrace OFF\
-routerTrace OFF \
-macTrace OFF
# Create HA and FA
set HA [$ns_ node 1.0.0]
set FA [$ns_ node 2.0.0]
$HA random-motion 0
$FA random-motion 0
# Position (fixed) for base-station nodes (HA & FA).
$HA set X_ 1.000000000000
$HA set Y_ 2.000000000000
$HA set Z_ 0.000000000000
$FA set X_ 650.000000000000
$FA set Y_ 600.000000000000
$FA set Z_ 0.000000000000
# create a mobilenode that would be moving between HA and FA.
# note address of MH indicates its in the same domain as HA.
$ns_ node-config -wiredRouting OFF
set MH [$ns_ node 1.0.1]
set node_(0) $MH
set HAaddress [AddrParams addr2id [$HA node-addr]]
[$MH set regagent_] set home_agent_ $HAaddress
# movement of the MH
$MH set Z_ 0.000000000000
$MH set Y_ 2.000000000000
$MH set X_ 2.000000000000
# MH starts to move towards FA
$ns_ at 100.000000000000 "$MH setdest 640.000000000000 610.000000000000
20.000000000000"
# goes back to HA
$ns_ at 200.000000000000 "$MH setdest 2.000000000000 2.000000000000
20.000000000000"
# create links between wired and BaseStation nodes
$ns_ duplex-link $W(0) $W(1) 5Mb 2ms DropTail
$ns_ duplex-link $W(1) $HA 5Mb 2ms DropTail
$ns_ duplex-link $W(1) $FA 5Mb 2ms DropTail
$ns_ duplex-link-op $W(0) $W(1) orient down
$ns_ duplex-link-op $W(1) $HA orient left-down
$ns_ duplex-link-op $W(1) $FA orient right-down
set mproto DM
set mrthandle [$ns_ mrtproto $mproto {}]
# $ns_ at 0.0 "$mrthandle switch-treetype $g_"
for {set i 1} {$i < 2} {incr i} {
set rcvr($i) [new Agent/Null]
$ns_ attach-agent $HA $rcvr($i)
$ns_ at $i "$HA join-group $rcvr($i) $g_"
}
set udp0 [new Agent/UDP]
$ns_ attach-agent $W(0) $udp0
$udp0 set dst_addr_ $g_
$udp0 set dst_port_ 0
$udp0 set class_ 2
set sender [new Application/Traffic/CBR]
$sender attach-agent $udp0
$ns_ at 0.0 "$sender start"
$ns_ at 10.0 " finish"
proc finish {} {
global ns_ tracefd namtrace
close $tracefd
close $namtrace
puts "running nam..."
exec nam wireless3-out.nam &
#puts "finishing.."
exit 0
}
$ns_ run
thank you in advance
