Re: [ns] segmentation fault with dsr
hi,
Solution:
In yr tcl script, include the following:
if { $val(rp) == “DSR” } {
set val(ifq)CMUPriQueue
} else {
set val(ifq)Queue/DropTail/PriQueue
}
http://cromagnonlife.wordpress.com/2010/08/08/solution-ns2-segmentation-fault-core-dumped-when-using-dsr/
sriram balakrishnan wrote:
i tried to simulate the wireless1.tcl file given in marcs tutorial and ran
it for 50 nodes and 20 connections but when the protocol is set to dsr it
gives segmentation fault any idea why
--
B Sriram
Wing Commander
mob : 09733706981
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Re: [ns] Problem using DSR in ns 2.34 and few general queries
hi,
Solution:
Hi,
In yr tcl script, include the following:
if { $val(rp) == “DSR” } {
set val(ifq)CMUPriQueue
} else {
set val(ifq)Queue/DropTail/PriQueue
}
http://cromagnonlife.wordpress.com/2010/08/08/solution-ns2-segmentation-fault-core-dumped-when-using-dsr/
visq wrote:
Sir,
I have the following problem testing a scenario using DSR protocol in ns
2.34.
1) It gives segmentation error .
How to solve this problem? It worked fine with AODV and DSDV.
2)simulation time . when i specified that
$ns at 2.0 $cbr0 start
$ns at 6.0 $cbr0 stop
In simulation the start time and stop time are different. and in not in
accordance with tcl script.
3)Regarding the throughput calculation, Suppose I am sending a tcp packet
of 1500 bytes at 1.00 and the packet is received at 1.35 what is
throughput in this case ? Is throughput calculated at sender side or
receiver side?
And what is throughput in case of multiple flows or multiple senders? is
throughput defined for each sender? or a network on a whole?
4) Regarding the trace format :- what does this trace indicate?
Sconfig 0.0 tap: on snoop: rts? on errs? on
Sconfig 0.0 salvage: on !bd replies? on
Sconfig 0.0 grat error: on grat reply: on
Sconfig 0.0 $reply for props: on ring 0 search: on
Sconfig 0.0 using MOBICACHE
s 2.0 _11_ AGT --- 0 tcp 1500 [0 0 0 0] --- [11:0 36:0 32 0]
[0 0] 0 0
r 2.0 _11_ RTR --- 0 tcp 1500 [0 0 0 0] --- [11:0 36:0 32 0]
[0 0] 0 0
s 2.007477689 _11_ RTR --- 1 DSR 32 [0 0 0 0] --- [11:255 36:255 32
0] 1 [1 1] [0 1 0 0-0] [0 0 0 0-0]
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[ns] Solution to ns2 dsr segmentation fault
will like to share the solution with everyone =)
Solution:
In yr tcl script, include the following:
if { $val(rp) == “DSR” } {
set val(ifq)CMUPriQueue
} else {
set val(ifq)Queue/DropTail/PriQueue
}
http://cromagnonlife.wordpress.com/2010/08/08/solution-ns2-segmentation-fault-core-dumped-when-using-dsr/
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[ns] difference in cbr rate
Hi All, I have few queries, 1) when we define cbr rate as $cbr_(0) set rate_ 0.1Mb and packet size as $cbr_(0) set packetSize_ 512 this means that node should send app. 195 (0.1*1000*1000/512 = 195.32 Packets) packets in a second (Please correct me if i am wrong). but when i run my simulation for 1 sec, I observe the number of packets sent are only 25 packets. Why is this so? 2) Instead of defining cbr rate in Mb if i define the rate in Kb or i just define it 0.1, than the umber of packets sent in 1 sec is only 1. Why is this so? 3) while calculating the average delay of the network, should we take into account the dropped packet as well? and if yes than what end time should we take for dropped packets. 4) how can we put the varying data rate and average delay of the network together in 1 file (either through awk script or through tcl file) so that i can plot the curve between network load and average network delay? Please help me in the above queries. Thanks, Ankur
[ns] code to add the hops(path) to source routing in the packet
Hello everybody, I need code to add the hops of path to source routing in the packet. If you have it please send me soon. Thank you in advance. Wei
[ns] Basic requirement for implementing a new protocol
Hi all We read and heard a lot about How to Implement a new routing algorithm, but as a necessary requirement for implementing a new protocol, it's necessary to access the distance between nodes, their location or their residual energy. I know the way of access to such information through tcl but how about it through c++ code? A probably answer is getloc, but how to use it? Regards sajad m
