Amar,
Correction on Line #6,
6. In case you like to know if a destination node received a packet,
you can do so by comparing a packet's destination ip address with
the node_id of a node receiving the packet ***at MAC layer***
rgds
Saravanan K
On Thu, Feb 7, 2013 at 2:19 PM, Saravanan Kandasamy <svana...@gmail.com> wrote:
> Dear Amar,
>
> I think you have confused with between mac::recv() and aodv::recv()
>
> 1. mac::recv() able to listen every packet in a channel as long as it
> is above CSThresh and decode a packet if it is above RXThresh.
>
> 2.This is not the same for aodv::recv(), you would need to understand, how
> a)AODV protocol works and the components of AODV Table built at nodes
> b)wireless mobile node schematic in the NS2 manual.
>
> 3.Not every packet received by mac::recv() is sent upstack to
> aodv::recv(), only those need to be forwarded will be sent to
> aodv::recv(). Thus the final destination node would not go through
> aodv:recv but the data packet received by mac:recv will be directly
> sent to AGT via LL using uptarget_
>
> 4.If you yet to understand this, let me illustrate this in a small
> scenario. We have 3 nodes (N3, N4 and N5) arranged in series. N5 sends
> one packet to N3.
>
> You will see something as below,
>
> Node: _5 _ recvd data packet at time: 11.500000000, PacketType: 61, UID: 4
> Node: _4 _ recvd data packet at time: 11.501782848, PacketType: 61, UID: 4
>
> if you invoke the below at aodv::recv(),
>
> if(DATA_PACKET(ch->ptype())) {fprintf(stdout,"\nNode: _%i _ recvd data
> packet at time: %.9lf, PacketType: %i, UID: %i", index, CURRENT_TIME,
> ch->ptype(), ch->uid());}
>
> You will see the destination node, i.e N3 is missing.
>
> 5. Do compare this with your trace file results,
>
> Line#01 - s 11.500000000 _5_ AGT --- 4 Poisson 1500 [0 0 0 0 Y Y]
> ------- [5:1 3:1 32 0 0]
> Line#02 - r 11.500000000 _5_ RTR --- 4 Poisson 1500 [0 0 0 0 Y Y]
> ------- [5:1 3:1 32 0 0]
> Line#03 - s 11.500000000 _5_ RTR --- 4 Poisson 1520 [0 0 0 0 Y Y]
> ------- [5:1 3:1 30 2 4]
> Line#04 - s 11.500435000 _5_ MAC --- 4 Poisson 1578 [13a 4 5 800 Y Y]
> ------- [5:1 3:1 30 2 4]
> Line#05 - r 11.501757848 _4_ MAC --- 4 Poisson 1520 [13a 4 5 800 Y Y]
> ------- [5:1 3:1 30 2 4]
> Line#06 - s 11.501767848 _4_ MAC --- 0 ACK 38 [0 5 4 0 Y Y]
> Line#07 - r 11.501782848 _4_ RTR --- 4 Poisson 1520 [13a 4 5 800 Y Y]
> ------- [5:1 3:1 30 2 4]
> Line#08 - f 11.501782848 _4_ RTR --- 4 Poisson 1520 [13a 4 5 800 Y Y]
> ------- [5:1 3:1 29 1 3]
> Line#09 - r 11.502072515 _5_ MAC --- 0 ACK 38 [0 5 4 0 Y Y]
> Line#10 - s 11.502481848 _4_ MAC --- 4 Poisson 1578 [13a 3 4 800 Y Y]
> ------- [5:1 3:1 29 1 3]
> Line#11 - r 11.503804697 _3_ MAC --- 4 Poisson 1520 [13a 3 4 800 Y Y]
> ------- [5:1 3:1 29 1 3]
> Line#12 - s 11.503814697 _3_ MAC --- 0 ACK 38 [0 4 3 0 Y Y]
> Line#13 - r 11.503829697 _3_ AGT --- 4 Poisson 1520 [13a 3 4 800 Y Y]
> ------- [5:1 3:1 29 1 3]
> Line#14 - r 11.504119364 _4_ MAC --- 0 ACK 38 [0 4 3 0 Y Y]
>
> You will see RTR (i.e AODV) is received only by the source node and
> the intermediary nodes (where forward event need to be executed)
> except the destination node.
>
> 6. In case you like to know if a destination node received a packet,
> you can do so by comparing a packet's destination ip address with
> the node_id of a node receiving the packet
>
> Good Luck.
>
> rgds
> Saravanan K
>
> On Wed, Feb 6, 2013 at 3:51 PM, AmarNath Patra <amarnath.pa...@gmail.com>
> wrote:
>>
>> Hello Everyone,
>>
>> If I add the following statement in the beginning of the code in the
>> function, AODV::recv(Packet *p, Handler*), in aodv.cc :
>>
>> if(DATA_PACKET(ch->ptype())) { printf("\nNode: _%i _ recvd data packet at
>> time: %.4lf", index, CURRENT_TIME); }
>>
>> Then it prints for all active nodes except for the destination. Why is it
>> happening?
>> If not in this function/file, then where can I check whether the
>> destination received a data packet?
>>
>> I just tried to implement the NULL agent's recv function in c++ source
>> code, and added the above statement in it.
>> Here the print function gets executed for the case of destination node. Is
>> this correct?
>>
>> Can't I recognize the/a destination node in the aodv,cc file itself?
>>
>> -amar
