Optical Busrt Switched networks

archerhao · 05-02-2016, 06:40 AM

Hi,
I have installed ns2.27 in ubuntu12.04 and added obs_optical-burst-switching_ns227.patch.

$ uname -m

Code:

i686

$ cat /etc/issue

Code:

Ubuntu 12.04.5 LTS \n \l

and I run sim20_7b.tcl.
according to sim20_7b.tcl,

Code:

.
.
.
for {set i 2} {$i < 12} {incr i} {
	set d [expr $i + 10]
.
.
.
	set temp [$n($i) set src_agent_]
	$temp install_connection $d	$i $d  $i 0 1 $d
	set temp [$n($d) set src_agent_]
	$temp install_connection $i	$d $i  $d 1 0 $i
	
	$ns at [expr $i] "$ftp($i) start"
}
.
.
.

$ns at 1 "plotWindow $winfile"
$ns at 10 "finish"
$ns run

it means that the tcp packet start be transmitted from node 2 to node 12 at 2,
the tcp packet start be transmitted from node 3 to node 13 at 3,
and so on the tcp packet start be transmitted from node 9 to node 19 at 9,
(finish at 10, so node 10 and node 11 are not working)

but I got this result:

Code:

fdlnumber_ 0
fdlnumber_ 0
record 1 DEBUG 3 at 2.008002064516129
corrupt error 0
corrupt error 0
record 1 DEBUG 3 at 2.025012704516129
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
corrupt error 0
record 2 DEBUG 3 at 9.039072895483869
corrupt error 0
corrupt error 0
record 4 DEBUG 3 at 9.070211659354836
corrupt error 0
corrupt error 0
record 8 DEBUG 3 at 9.101367063225803
corrupt error 0
corrupt error 0
record 16 DEBUG 3 at 9.132555747096770
corrupt error 0
corrupt error 0
record 20 DEBUG 3 at 9.157830861935494
corrupt error 0
.
.
.

except node 9 to node 19,
all of nodes didn't transmit the packet,
I checked out.tr and found
node 2~6, the tcp packet was transmitted to optical node 0,
the OP_BURST was transmitted from node 0 to node 1,
then optical node 1 didn't send tcp packet to node 12~16,
so node 12~16 can't send ack back.

Code:

+ 2 2 0 tcp 40 ------- 12 2.1 12.1 0 800
- 2 2 0 tcp 40 ------- 12 2.1 12.1 0 800
r 2.001002 2 0 tcp 40 ------- 12 2.1 12.1 0 800
+ 2.008002 0 1 OP_BURST 40 ------- 12 0.0 1.0 -1 11
- 2.008002 0 1 OP_BURST 40 ------- 12 0.0 1.0 -1 11
+ 2.008012 0 1 OP_BURST 80 ------- 12 0.0 1.0 -1 10
- 2.008012 0 1 OP_BURST 80 ------- 12 0.0 1.0 -1 10
r 2.018002 0 1 OP_BURST 40 ------- 12 0.0 1.0 -1 11
r 2.018013 0 1 OP_BURST 80 ------- 12 0.0 1.0 -1 10
+ 3 3 0 tcp 40 ------- 13 3.1 13.1 0 805
.
.
.

and node 7, node 8, the tcp packet was successfully transmitted to node 17 and node 18,
and node 17, node 18 send ack to optical node 1,
the OP_BURST was transmitted from node 1 to node 0,
but optical node 0 didn't send ack to node 7 and node 8.

Code:

.
.
.
+ 7 7 0 tcp 40 ------- 17 7.1 17.1 0 825
- 7 7 0 tcp 40 ------- 17 7.1 17.1 0 825
r 7.001002 7 0 tcp 40 ------- 17 7.1 17.1 0 825
+ 7.008002 0 1 OP_BURST 40 ------- 17 0.1 1.-1 -1 802
- 7.008002 0 1 OP_BURST 40 ------- 17 0.1 1.-1 -1 802
+ 7.008012 0 1 OP_BURST 80 ------- 17 0.1 1.-1 -1 801
- 7.008012 0 1 OP_BURST 80 ------- 17 0.1 1.-1 -1 801
r 7.018002 0 1 OP_BURST 40 ------- 17 0.1 1.-1 -1 802
r 7.018013 0 1 OP_BURST 80 ------- 17 0.1 1.-1 -1 801
+ 7.018013 1 17 tcp 40 ------- 17 7.1 17.1 0 825
- 7.018013 1 17 tcp 40 ------- 17 7.1 17.1 0 825
r 7.019015 1 17 tcp 40 ------- 17 7.1 17.1 0 825
+ 7.019015 17 1 ack 40 ------- 7 17.1 7.1 0 828
- 7.019015 17 1 ack 40 ------- 7 17.1 7.1 0 828
r 7.020017 17 1 ack 40 ------- 7 17.1 7.1 0 828
+ 7.020017 1 0 OP_BURST 40 ------- 7 1.0 0.0 -1 400
- 7.020017 1 0 OP_BURST 40 ------- 7 1.0 0.0 -1 400
r 7.030017 1 0 OP_BURST 40 ------- 7 1.0 0.0 -1 400
+ 8 8 0 tcp 40 ------- 18 8.1 18.1 0 833
- 8 8 0 tcp 40 ------- 18 8.1 18.1 0 833
+ 8 2 0 tcp 40 ---A--- 12 2.1 12.1 0 834
- 8 2 0 tcp 40 ---A--- 12 2.1 12.1 0 834
.
.
.

only node 9 successfully transmit the tcp packet.

Code:

.
.
.
+ 9 9 0 tcp 40 ------- 19 9.1 19.1 0 844
- 9 9 0 tcp 40 ------- 19 9.1 19.1 0 844
+ 9 3 0 tcp 40 ---A--- 13 3.1 13.1 0 845
- 9 3 0 tcp 40 ---A--- 13 3.1 13.1 0 845
r 9.001002 9 0 tcp 40 ------- 19 9.1 19.1 0 844
r 9.001002 3 0 tcp 40 ---A--- 13 3.1 13.1 0 845
+ 9.008002 0 1 OP_BURST 40 ------- 19 0.1 1.-1 -1 812
- 9.008002 0 1 OP_BURST 40 ------- 19 0.1 1.-1 -1 812
+ 9.008012 0 1 OP_BURST 80 ------- 19 0.1 1.-1 -1 811
- 9.008012 0 1 OP_BURST 80 ------- 19 0.1 1.-1 -1 811
r 9.018002 0 1 OP_BURST 40 ------- 19 0.1 1.-1 -1 812
r 9.018013 0 1 OP_BURST 80 ------- 19 0.1 1.-1 -1 811
+ 9.018013 1 19 tcp 40 ------- 19 9.1 19.1 0 844
- 9.018013 1 19 tcp 40 ------- 19 9.1 19.1 0 844
r 9.019015 1 19 tcp 40 ------- 19 9.1 19.1 0 844
+ 9.019015 19 1 ack 40 ------- 9 19.1 9.1 0 850
- 9.019015 19 1 ack 40 ------- 9 19.1 9.1 0 850
r 9.020017 19 1 ack 40 ------- 9 19.1 9.1 0 850
+ 9.020017 1 0 OP_BURST 40 ------- 9 1.0 0.0 -1 404
- 9.020017 1 0 OP_BURST 40 ------- 9 1.0 0.0 -1 404
r 9.030017 1 0 OP_BURST 40 ------- 9 1.0 0.0 -1 404
+ 9.030017 0 9 ack 40 ------- 9 19.1 9.1 0 850
- 9.030017 0 9 ack 40 ------- 9 19.1 9.1 0 850
r 9.031019 0 9 ack 40 ------- 9 19.1 9.1 0 850
+ 9.031019 9 0 tcp 1040 ------- 19 9.1 19.1 1 853
.
.
.

How can I resolve it?

archerhao · 05-08-2016, 04:28 AM

Hi,everyone
I solve this question!

I have installed ns2.27 with obs_optical-burst-switching_ns227.patch in ubuntu12.04 with gcc-4.6/g++-4.6 before.

and I have installed ns2.27 with obs_optical-burst-switching_ns227.patch again with gcc-3.3/g++-3.3 just now.

then this question has been resolved !

Thanks, everyone

onur · 09-13-2016, 10:05 AM

nOBS is updated for ns version 2.35, so installing ns2.27 is no longer necessary. Also the bugs are fixed. You can find it at https://github.com/onuralparslan/nOBS

mrhai · 04-12-2017, 09:15 AM

hi
please help me!!
install obs for ns2.35

queue/errmodel.o: In function `hdr_burst::access(Packet const*)':
errmodel.cc

.text._ZN9hdr_burst6accessEPK6Packet[hdr_burst::access(Packet const*)]+0x7): undefined reference to `hdr_burst:

ffset_'
collect2: ld returned 1 exit status
make: *** [ns] Error 1

onur · 04-12-2017, 03:35 PM

Did you install nOBS v2.0 at https://github.com/onuralparslan/nOBS ?
Did you add the following code to OBJ_CC in Makefile and then recompile?

optical/op-delay.o
optical/op-queue.o
optical/op-burst_agent.o
optical/op-classifier.o
optical/op-classifier-hash.o
optical/op-classifier-sr.o
optical/op-sragent.o
optical/op-queue2.o
optical/op-schedule.o
optical/op-converterschedule.o
optical/op-fdlschedule.o\

Is there a file called "op-burst_agent.o" under the folder "optical"?

knudfl · 04-12-2017, 06:04 PM

Post #34, @mrhai : Welcome to LQ.

OBS for ns-2.35 : obs-nOBS_ns235.patch
https://drive.google.com/file/d/0B7S...ew?usp=sharing

Building ns-2.35 with nOBS :

Code:

tar xvf ns-allinone-2.35_gcc482.tar.gz (Oct2014 update for gcc versions 4.6 - 5.3)
https://drive.google.com/file/d/0B7S...ew?usp=sharing
cd ns-allinone-2.35/
patch -p0 < obs-nOBS_ns235.patch
./install
cd ns-2.35/
cp ns ns-nOBS
sudo cp ns-nOBS /usr/local/bin/

Simulation : ns-nOBS sim20_7bmulti-cont.tcl
.. The files {cont.txt, goodput.txt, not-arr-cont.txt, out.nam, out.tr, stat.txt, windows.txt} are created.

Using some of the files for Xgraph : xgraph goodput.txt stat.txt windows.txt &

P.S. :
The patch was made from @onur´s files https://github.com/onuralparslan/nOBS

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