[ns] result of change in channel bandwidth
hi i change the channel band width. and calculating the delay.by changing one source channel bandwidth the drop of packet is increase of other souce.but BW 1.4 to 1.8 mbit/sec the drop is same and also for 2to 2.6mbits/sec the drop is same can any one tell me what is the reason behind that. please it is urgent. thanks Send instant messages to your online friends http://in.messenger.yahoo.com Stay connected with your friends even when away from PC. Link: http://in.mobile.yahoo.com/new/messenger/
[ns] help regarding cross referencing in MANETs
hi to everybody, i m trying to modify aodv protocal to reduce the route discovery latency and number of RREQ broadcasts. I am using a flag called ctsflag in my AODV routing agent. i have to set this flag when a node receives a CTS packet in MAC. Nodes waits for CTS in Promiscuous mode. plz suggest me how to do this cross referencing, setting a flag of AODV agent in MAC when a node receives CTS packet in MAC 802.11. In 802-11.cc file, therr is function called recv()>recv-timer()->recvCTS() i mean, recv-timer classifying the various in coming packets , in my case ( bcaz, i m interested in CTS packet) it calls recvCTS(). in this function i have to set the flag. Plz tell me , how to do this? and also suggest me how to do promiscuous mode for AODV. thanx in advance... waiting for reply. bye tirumal
Re: [ns] Help needed on RSVP !
Hi I have seen earlier this error message. It seems that you have an old OTcl version, try to install a more recent one. If it does not work, contact me. Sincerely, Alexander Sayenko (PhD) Assistant Telecommunication laboratory, MIT department University of Jyvaskyla, Finland > > Hi ;; > > I try to RSVP implementation from Mr. Alexander Sayenko, but in the make step I get this error: > g_test -I. -I/home/asma/ns-allinone-2.28/tclcl-1.16 -I/home/asma/ns-allinone -2.2 > 8/otcl-1.9 -I/home/asma/ns-allinone-2.28/include -I/home/asma/ns-allinone-2. 28/i > nclude -I/usr/include/pcap -I./tcp -I./sctp -I./common -I./link -I./queue -I ./ad > c -I./apps -I./mac -I./mobile -I./trace -I./routing -I./tools -I./classifier -I. > /mcast -I./diffusion3/lib/main -I./diffusion3/lib -I./diffusion3/lib/nr -I./ diff > usion3/ns -I./diffusion3/filter_core -I./asim/ -I./qs -I./diffserv -I./mac/8 02_1 > 1e -I./wpan -o rsvp/rsvp-link.o rsvp/rsvp-link.cc > rsvp/rsvp-link.cc: In constructor `RSVPChecker::RSVPChecker()': > rsvp/rsvp-link.cc:47: error: call of overloaded `bind(const char[5], nsaddr_t* > )' is ambiguous > /home/asma/ns-allinone-2.28/tclcl-1.16/tclcl.h:182: error: candidates are: void > > TclObject::bind(const char*, unsigned int*) > /home/asma/ns-allinone-2.28/tclcl-1.16/tclcl.h:183: error: void > > TclObject::bind(const char*, int*) > make: *** [rsvp/rsvp-link.o] Error 1 > > > > I am using ns-allinone-2.28 on the Cygwin environment. > any advice??!! > > Sincerely, > Asma > > > > > >Hi > >I support the following implementation: >http://www.cc.jyu.fi/~sayenko/src/ns-2.28-rsvp2.diff.gz. The patch also >installs the test scripts in tcl/ex/rsvp > >Sincerely, >Alexander Sayenko (PhD) >Assistant >Telecommunication laboratory, MIT department >University of Jyvaskyla, Finland > > >> >> >> >> Hi all! >> >> IS any of u ppl working on RSVP using NS-2??? >> If so, then do send me some example codes or some links where I can get some direction about where shd I start 4m?? >> >> Thanks in advance, >> Deepti. >> >> >> - >> Jiyo cricket on Yahoo! India cricket >> Yahoo! Messenger Mobile Stay in touch with your buddies all the time. > > Send instant messages to your online friends http://uk.messenger.yahoo.com > > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.5.2/329 - Release Date: 02.05.2006 > >
[ns] IFQ ARP DROP
Hi When I send a Request packet, and after some forwarding the packet is dropped and the trace file records the message (D IFQ ARP 0). Please any help how to solve this problem? Alchaita
[ns] Error with Setdest
I tried running ./setdest from its directory, but it gave an rerror abt random. do anybody know why setdest aint workin on ns-2.29
[ns] Directed Diffusion - First Version
Hello, The first version of Directed Diffusion, developed by Chalermerk Intanagonwiwat, has any know bugs? Does anybody knows the difference between the Chalermerk Intanagonwiwat´s version and Fabio Silva´s version? Thanks in advance. Etienne Oliveira.
[ns] [NS]TRACEGRAPH FORMAT
-- HI EVERYBODY! I´M WORKING WITH NS-2 SIMULATOR AND I WANT TO ANALIZE SIMULATIONS RESULTS WITH TRACEGRAPH. cAN SOMEBODY TELL ME HOW? IF I WRITEN ./TRACEGRAPH SIM.TR I GET AN ERROR. CANNOT OPEN FILE THANKS IN ADVANCE
[ns] Pocket implementation
Hi everybody! Does anybody knows if there is a OLSR implementation version that is RFC compliant and works OK in Pocket PC with Windows CE? Thanks for help! Regards Luciana
[ns] no. of nodes in ns-2.29
Hi everyone, What is the limit of number of nodes that ns-2.29 can support? Can anybody tell me please? Thanx Shafiq
Re: [ns] no. of nodes in ns-2.29
Shafiq Hashmi schrieb: > What is the limit of number of nodes that ns-2.29 can support? Can anybody > tell me please I don't know if there is any limit - we run simulations with 50.000 nodes without problems. Only the required memory could be the limit. For 50.000 nodes you should have at least 4GB of memory. Daniel.
[ns] NS-2 HCCA simulation problem
When I run one of the sample scripts of NS-2 HCF implementation from SOP INRIA, I got stuck with this "segmentation fault". I installed the components separately with OTCL 1.11 and TCLCL 1.17. ## set scenario uplink_node Running scenario uplink_node Creating 7 nodes num_nodes is set 7 Audio flow 1 from Node 1 to AP Audio flow 2 from Node 2 to AP Audio flow 3 from Node 3 to AP Audio flow 4 from Node 4 to AP Audio flow 5 from Node 5 to AP Audio flow 6 from Node 6 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 11 from Node 7 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 12 from Node 8 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 13 from Node 9 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 14 from Node 10 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 15 from Node 11 to AP warning: no class variable Tracefile::debug_ see tcl-object.tcl in tclcl for info about this warning. VBR H.261 video flow 16 from Node 12 to AP CBR MPEG 4 video flow 21 from Node 13 to AP CBR MPEG 4 video flow 22 from Node 14 to AP CBR MPEG 4 video flow 23 from Node 15 to AP CBR MPEG 4 video flow 24 from Node 16 to AP CBR MPEG 4 video flow 25 from Node 17 to AP CBR MPEG 4 video flow 26 from Node 18 to AP Starting Simulation... bad file size in video2.dat Segmentation fault # Regards Mishar
[ns] Autorate in 802.11G
Hello.
I´m working on 802.11g in ns-2.28. I need to make automatic
change in dataRate depending in distance between tow nodes.
I tried to make some changes on the on the mac-802_11.h and
in the mac-802_11.cc but they did not worked for me.
I make some other changes in ns-default.tcl and ns-mac.tcl
for make that the 802.11g standard work in ns-2.28, this
changes were succesful.
In order to make the automatic change in dataRate I tried to
make some changes in mac-802_11.cc:
Packet *p = Packet::alloc();
struct hdr_cmn *ch = HDR_CMN(p);
struct hdr_mac802_11 *dh = HDR_MAC802_11(p);
struct hdr_arp *ah = HDR_ARP(p);
double tX_,tY_,tZ_,rX_,rY_,rZ_;
nsaddr_t txid=index_;
nsaddr_t rxid;
MobileNode *tx_node= (MobileNode*)(Node::get_node_by_address(txid));
tx_node->getLoc(&tX_,&tY_,&tZ_);
ch->tX()=tX_;
ch->tY()=tY_; ch->tZ()=tZ_;
if (strcmp(packet_info.name(ch->ptype()), "ARP") == 0)
rxid=ah->arp_tpa;
else
rxid=ETHER_ADDR(dh->dh_ra);
MobileNode *rx_node= (MobileNode*)(Node::get_node_by_address(rxid));
rx_node->getLoc(&rX_,&rY_,&rZ_);
dist = sqrt((rX_ - tX_) * (rX_ - tX_) + (rY_ - tY_) * (rY_ - tY_) +
(rZ_ - tZ_) * (rZ_ - tZ_));
// End of modification
Tcl& tcl = Tcl::instance();
tcl.evalf("Mac/802_11 set basicRate_");
if (strcmp(tcl.result(), "0") != 0)
bind_bw("basicRate_", &basicRate_);
else
basicRate_ = bandwidth_;
tcl.evalf("Mac/802_11 set dataRate_");
if (strcmp(tcl.result(), "0") != 0)
bind_bw("dataRate_", &dataRate_);
//Modification to obtain dataRate VS distance by Jonathan Lopez
else if (dist<=100 & dist>77)
dataRate_ = 1*1e6;
else if (dist<=77 & dist>65)
dataRate_ = 2*1e6;
else if (dist<=65 & dist>57)
dataRate_ = 6*1e6;
else if (dist<=57 & dist>54)
dataRate_ = 9*1e6;
else if (dist<=54 & dist>50)
dataRate_ = 12*1e6;
else if (dist<=50 & dist>42)
dataRate_ = 18*1e6;
else if (dist<=42 & dist>35)
dataRate_ = 24*1e6;
else if (dist<=35 & dist>23)
dataRate_ = 36*1e6;
else if (dist<=23 & dist>19)
dataRate_ = 48*1e6;
else
dataRate_ = bandwidth_;
// End of modification
EOTtarget_ = 0;
bss_id_ = IBSS_ID;
//printf("bssid in constructor %d\n",bss_id_);
}
Here I just tried to change dataRate depending the distance
between the nodes, for make the change for every packet that
is send.
However this modification is not working, I see that every
time the
dataRate is at 54Mbps, including if I comment
every line that define the dataRate, including the lines
tcl.evalf("Mac/802_11 set dataRate_");
if (strcmp(tcl.result(), "0") != 0)
bind_bw("dataRate_", &dataRate_);
I can modify the dataRate with Mac/802_11 set dataRate_ xMb
in my tcl script. But I need that the dataRate been modified
for every packet that is send denpending in the distance.
Can anyone tell me what is happend or how can I do the
modifications that I need?.
Thanks.
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[ns] Bug in channel.cc
Dear All,
I think I found a bug in channel.cc file when I try to implement frequency
hopping scheme. So I need to add and remove nodes from wireless channel
dynamically.
In WirelessChannel::removeNodeFromList(MobileNode *mn)
for (tmp = xListHead_; tmp->nextX_ != NULL; tmp=tmp->nextX_) {
I think it should be.
for (tmp = xListHead_; tmp != NULL; tmp=tmp->nextX_) {
I fixed it and I remove core dump.
Best Regards,
Weetit
