Hi Paulo, Read carefully the documents I had pointed before! They would explain you how to proceed.
Regards, Alysson 2012/5/2, Paulo Robson S. F. <robson.paulo...@gmail.com>: > Hi guys again :) > > Sorry for too much questions :) > > When I tried to add the scenario above ( broadcasting + cbr traffic flow) > the dst_addr_ -1 didn't work anymore, the simulation finishes but the trace > file ends incomplete. > For my luck, i tried, i don't know why, to set dst_addr_ -2 and works! > In the trace shown n1 sends a broadcast, n2 sends its cbr traffic and n3 > receive both flows. > > But when i tried to add a forthy node to receive the broadcasting, it > didn't appears in the trace file. > i'm trying to solve this problem. > > So, why dst_addr_ -2 work? > > 2012/5/2 Paulo Robson S. F. <robson.paulo...@gmail.com> > >> Hi, >> >> I forgot to show this page: >> http://www.math.unipd.it/~cpalazzi/fastbroadcast.html >> what do you think of this broadcast agent? >> >> Att >> >> >> 2012/5/2 Paulo Robson S. F. <robson.paulo...@gmail.com> >> >> Hi guys, thanks for the feedback. >>> >>> Alysson, >>> >>> >>> The Agent PBC is a broadcast but is only ping, I tested it before and is >>> no good for me. >>> >>> I dont understand this agent Flooding at all, I need to use it? >>> >>> Are you saying the only way to broadcast is to use one of those agents? >>> My way is wrong? >>> >>> Another question, >>> Is possible the follow scenario? : one node(n1) broadcasting and two >>> another(n2 and n3) nodes as a cbr traffic flow like n2 ---> n3 and n3 >>> receiving the broadcasting packets of n1 and the traffic of n2? >>> >>> Thank you! >>> >>> >>> >>> 2012/5/2 Alysson Oliveira <lssn.olive...@gmail.com> >>> >>>> Hi, >>>> >>>> You can see it on ns-2.34/tcl/ex/wireless-flooding.tcl and >>>> ns-2.34/tcl/ex/802.11/broadcast_validation.tcl witch uses a specific >>>> broadcast agent. >>>> >>>> Further details in ns-2.34/common/packet.h on lines 676 and 677: >>>> init(p); // Initialize bits_[] >>>> (HDR_CMN(p))->next_hop_ = -2; // -1 reserved for IP_BROADCAST >>>> (HDR_CMN(p))->last_hop_ = -2; // -1 reserved for IP_BROADCAST >>>> >>>> Regards, >>>> Alysson Oliveira >>>> >>>> >>>> 2012/5/2, Frank Wetzels <frank.wetz...@cwi.nl>: >>>> > >>>> > Hi, >>>> > >>>> > I have no solution for you in NS2. However, I have a remark on your >>>> > address/port choice. >>>> > I guess that by choosing -1, you fill the address field with >>>> 255.255.255.255 >>>> > as IP address >>>> > in dotted decimal notation? The port number choice of 0 is a bit >>>> strange. >>>> > Although you are using IP broadcast >>>> > you - strictly speaking - still need a legitimate port number. Indeed, >>>> you >>>> > choose a particular protocol by choosing >>>> > the port address. As an example, DHCP uses IP broadcast initially >>>> based on >>>> > UDP67 / UDP68. >>>> > >>>> > Regards, >>>> > Frank >>>> > >>>> > On May 1, 2012, at 5:36 AM, Paulo Robson S. F. wrote: >>>> > >>>> >> >>>> >> Hi, >>>> >> >>>> >> I want to broadcast a packet using an udp agent. I found some >>>> solutions >>>> >> at >>>> >> this maillist but >>>> >> neither satisfactory. >>>> >> >>>> >> I just want to send broadcast packet from 1 node to another 2 nodes >>>> >> in >>>> >> his >>>> >> range. My idea was >>>> >> change the dst ip to -1 and dst port to 0 because i saw somewhere >>>> that is >>>> >> the way to broadcast. >>>> >> >>>> >> I'm using the 802.11Ext model of MAC, the new module of the NS 2.34 >>>> >> >>>> >> Well, I made this way: >>>> >> >>>> >> set udp0 [new Agent/UDP] >>>> >> $ns attach-agent $node $udp0 >>>> >> set cbr2 [new Application/Traffic/CBR] >>>> >> >>>> >> $cbr2 set packetSize_ 128 >>>> >> $cbr2 set interval_ 0.015 >>>> >> $cbr2 set random_ 1 >>>> >> $cbr2 set maxpkts_ 1000 >>>> >> >>>> >> $cbr2 attach-agent $udp0 >>>> >> >>>> >> #to broadcast i used this: >>>> >> $udp0 set dst_addr_ -1 >>>> >> $udp0 set dst_port_ 0 >>>> >> >>>> >> In the trace file seems to be right, but i dont know if only this >>>> change >>>> >> of >>>> >> address and port of destination >>>> >> is indeed a broadcast to all neighbors. >>>> >> >>>> >> First lines of trace file: >>>> >> s 0.500000000 _2_ AGT --- 0 cbr 128 [0 0 0 0] ------- [2:0 -1:0 32 >>>> >> 0] >>>> >> [0] >>>> >> 0 0 >>>> >> r 0.500000000 _2_ RTR --- 0 cbr 128 [0 0 0 0] ------- [2:0 -1:0 32 >>>> 0] >>>> >> [0] >>>> >> 0 0 >>>> >> s 0.500000000 _2_ RTR --- 0 cbr 148 [0 0 0 0] ------- [2:0 -1:0 32 >>>> >> 0] >>>> >> [0] >>>> >> 0 0 >>>> >> s 0.500025000 _2_ MAC --- 0 cbr 176 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [0] 0 0 >>>> >> r 0.500546664 _1_ MAC --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [0] 1 0 >>>> >> r 0.500546841 _0_ MAC --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [0] 1 0 >>>> >> r 0.500571664 _1_ RTR --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [0] 1 0 >>>> >> r 0.500571664 _1_ AGT --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 31 >>>> >> 0] [0] 1 0 >>>> >> r 0.500571841 _0_ RTR --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [0] 1 0 >>>> >> r 0.500571841 _0_ AGT --- 0 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 31 >>>> >> 0] [0] 1 0 >>>> >> s 0.507505094 _2_ AGT --- 1 cbr 128 [0 0 0 0] ------- [2:0 -1:0 32 >>>> >> 0] >>>> >> [1] >>>> >> 0 0 >>>> >> r 0.507505094 _2_ RTR --- 1 cbr 128 [0 0 0 0] ------- [2:0 -1:0 32 >>>> 0] >>>> >> [1] >>>> >> 0 0 >>>> >> s 0.507505094 _2_ RTR --- 1 cbr 148 [0 0 0 0] ------- [2:0 -1:0 32 >>>> >> 0] >>>> >> [1] >>>> >> 0 0 >>>> >> s 0.507530094 _2_ MAC --- 1 cbr 176 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [1] 0 0 >>>> >> r 0.508051758 _1_ MAC --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [1] 1 0 >>>> >> r 0.508051934 _0_ MAC --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [1] 1 0 >>>> >> r 0.508076758 _1_ RTR --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [1] 1 0 >>>> >> r 0.508076758 _1_ AGT --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 31 >>>> >> 0] [1] 1 0 >>>> >> r 0.508076934 _0_ RTR --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 32 >>>> >> 0] [1] 1 0 >>>> >> r 0.508076934 _0_ AGT --- 1 cbr 148 [0 ffffffff 2 0] ------- [2:0 >>>> -1:0 >>>> >> 31 >>>> >> 0] [1] 1 0 >>>> >> >>>> >> >>>> >> Thanks guys >>>> >> >>>> >> >>>> >> Att, >>>> >> >>>> >> -- >>>> >> Paulo Robson SF >>>> >> Computação UFC >>>> >> Semestre VII >>>> > >>>> > >>>> > >>>> >>>> >>>> -- >>>> Alysson Oliveira >>>> >>> >>> >>> >>> -- >>> Paulo Robson SF >>> Computação UFC >>> Semestre VII >>> >> >> >> >> -- >> Paulo Robson SF >> Computação UFC >> Semestre VII >> > > > > -- > Paulo Robson SF > Computação UFC > Semestre VII > -- Alysson Oliveira
