[ns] movement pattern of mobile nodes
hi I want to make a scenario where the network at first is partitioned and then the network becomes fully connected, where all the partitions become one partition. any one have any idea about a generator with this capability?
[ns] god information
hi my traffic file generated by scengen doesn't contain the god information ( $god_ set-dist). Does that matter?
[ns] changing communication range many times in the simulation
Hi everyone, anyone have an idea about how to change the communication range for a specific node many times in the same simulation? Thanks
[ns] exponential distribution
Hi, In a Network with a 40 mobile node, the used model is RWP. How to set the pause time for the mobile node to be exponentially distributed with a mean of 50 s.
Re: [ns] Error in Tcl script
Yes, that solved the problem , thank you very much.
From: Leo Sánchez sanc...@ugr.es
To: ns-users@ISI.EDU
Sent: Wednesday, June 22, 2011 8:57 PM
Subject: Re: [ns] Error in Tcl script
Try defining the process this way:
proc discover_ferry { src dst now index } {
global ns_ node_
...
...
...
}
Hope it helps!
Leo Sánchez
El 22/06/2011 16:48, Mohamed Ibrahim Salman escribió:
Hi,
This error appear when I try to invoke discover_ferry{} function
ns: discover_ferry 1 13 0.00 3 : can't read node_(1): no such
variable
while executing
$ns_ attach-agent $node_($src) $udp_($index)
(procedure discover_ferry line 6)
invoked from within
discover_ferry 1 13 0.00 3
proc discover_ferry { src dst now index } {
global ns_ node_($src) node_($dst)
set udp_($index) [new Agent/UDP]
$ns_ attach-agent $node_($src) $udp_($index)
set null_($index) [new Agent/Null]
$ns_ attach-agent $node_($dst) $null_($index)
set cbr_($index) [new Application/Traffic/CBR]
$cbr_($index) set packetSize_ 256
$cbr_($index) set maxpkts_ 1
$cbr_($index) attach-agent $udp_($index)
$ns_ connect $udp_($index) $null_($index)
$ns_ at $now $cbr_($index) start
}
[ns] Error in Tcl script
Hi,
This error appear when I try to invoke discover_ferry{} function
ns: discover_ferry 1 13 0.00 3 : can't read node_(1): no such
variable
while executing
$ns_ attach-agent $node_($src) $udp_($index)
(procedure discover_ferry line 6)
invoked from within
discover_ferry 1 13 0.00 3
proc discover_ferry { src dst now index } {
global ns_ node_($src) node_($dst)
set udp_($index) [new Agent/UDP]
$ns_ attach-agent $node_($src) $udp_($index)
set null_($index) [new Agent/Null]
$ns_ attach-agent $node_($dst) $null_($index)
set cbr_($index) [new Application/Traffic/CBR]
$cbr_($index) set packetSize_ 256
$cbr_($index) set maxpkts_ 1
$cbr_($index) attach-agent $udp_($index)
$ns_ connect $udp_($index) $null_($index)
$ns_ at $now $cbr_($index) start
}
Re: [ns] cbrgen.tcl nothing is generated
choice another rate ex rate 1, also you can take a look at cbrgen.tcl and see how that code generate a traffic file, it's simple and not that hard. From: umair shah meetuas...@yahoo.com To: nsusers ns-users@ISI.EDU Sent: Monday, June 20, 2011 6:02 PM Subject: [ns] cbrgen.tcl nothing is generated umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 40 -seed 0 -mc 30 -rate 4 /home/umair/cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 40 -seed 0 -mc 30 -rate 4 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 20 -seed 0 -mc 16 -rate 4 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 20 -seed 0 -mc 16 -rate 4 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 20 -seed 0 -mc 16 -rate 4 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 20 -seed 1 -mc 16 -rate 4 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 20 -seed 1 -mc 16 -rate 16 cbrtest.tcl umair@umair-VirtualBox:~/ns-allinone-2.34/ns-2.34/indep-utils/cmu-scen-gen$ ns cbrgen.tcl -type cbr -nn 50 -seed 1 -mc 24 -rate 20 tst.tcl in all the case nothing is genearated inside the files ,only says invalid sending rate or blank any help?
[ns] packets drop IFQ END, please it's urgent
Why packets are dropped because IFQ END, I extend the simulation time but the problem still exist, Why do packets still in IFQ and not forwarded to destination? I also increase the size if IFQ in TCL simulation script. How to forward the packets from IFQ?
[ns] Sending RREQ periodically, any suggestion?
Hi, I want to send out a RREQ periodically from only one specific node, any suggestion? I made a Timer, but How to loop through all the nodes in the network to send a RREQ for them if they are available.
[ns] A Modification on AODV
Hi, As you know, AODV request the route only On DemandI want only one special node in AODV to know the route to all available nodes? any suggestion?
[ns] Error in classifier when enforcing the destination of the packets
Hi everyone,
I'm trying to redirect packets from source to (another destination) in routing
layer, but this error appear, any one have any idea?
current number of current packet inside (rt_resolve) is (1)---
Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl) --- _o80: no target
for slot 0 _o80 type: Classifier/Portcontent dump:classifier _o80 0
offset0 shift 2147483647 mask 1 slots slot 255: _o82
(CMUTrace/Recv)-- Finished standard no-slot{} default handler --
[ns] implementing ferry node
Hi, every one I want to implement a special mobile node called ferry node this node is capable of solving the problem for intermittent connection by taking packets from source node and delivering these packets to destination node when it meet the destination node. this mean the ferry- has a buffer that is greater than regular buffer in regular mobile node.- ferry can interact with other mobile nodes and deliver packets when no end-to-end path exists. from that point, I want any idea about how to implement that ferry in ns-2 additional description and questions may help to understand my issue are attached with this letter. thank you in advance.
