Hi,
I am simulating 50 nodes wireless communication using DSR. When a route
request is sent, the destination generates route reply with the same
sequence number as that of route request and sends it to originator. But the
thing is in some f the route replies, I am getting sequence number 0. Any
body knows what is the reason behind? I am pasting some part of RTR traces
where node 1 tries to find route to node 2(with comments). Sequence numbers
are in Bold.

Please guide..

Thanking You,
Manish.

#Ring 0 search Identified by -Pe 0->0
s -t 152.560052013 -Hs 1 -Hd -1 -Ni 1 -Nx 288.49 -Ny 51.88 -Nz 0.00 -Ne
1000.000000 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 1.255 -Id 2.255  -It
DSR -Il 32 -If 0 -Ii 1 -Iv 32 -P dsr -Ph 1 -Pq 1 -Ps 1 -Pp 0 -Pn 1 -Pl 0 -Pe
0->0 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

#Propagating Route request identified by -Pe 0->16
s -t 152.612531581 -Hs 1 -Hd -1 -Ni 1 -Nx 289.00 -Ny 52.11 -Nz 0.00 -Ne
871.390423 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 1.255 -Id 2.255  -It
DSR -Il 32 -If 0 -Ii 4 -Iv 32 -P dsr -Ph 1 -Pq 1 *-Ps 2* -Pp 0 *-Pn 2* -Pl 0
-Pe 0->16 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

#Entries where route reply, has -Pn= seq num= same as that in route request
s -t 152.626917355 -Hs 2 -Hd 40 -Ni 2 -Nx 562.16 -Ny 191.47 -Nz 0.00 -Ne
871.330571 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255  -It
DSR -Il 52 -If 0 -Ii 5 -Iv 254 -P dsr -Ph 3 -Pq 0 -Ps 2 -Pp 1 *-Pn 2* -Pl 3
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

s -t 152.626943266 -Hs 2 -Hd 24 -Ni 2 -Nx 562.16 -Ny 191.47 -Nz 0.00 -Ne
871.330571 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255 -It
DSR -Il 60 -If 0 -Ii 6 -Iv 254 -P dsr -Ph 4 -Pq 0 -Ps 2 -Pp 1 *-Pn 2* -Pl 4
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

s -t 152.630379742 -Hs 2 -Hd 28 -Ni 2 -Nx 562.17 -Ny 191.48 -Nz 0.00 -Ne
871.325233 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255 -It
DSR -Il 60 -If 0 -Ii 10 -Iv 254 -P dsr -Ph 4 -Pq 0 -Ps 2 -Pp 1 *-Pn 2* -Pl 4
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0
s -t 152.631407825 -Hs 2 -Hd 25 -Ni 2 -Nx 562.17 -Ny 191.48 -Nz 0.00 -Ne
871.325233 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255  -It
DSR -Il 52 -If 0 -Ii 9 -Iv 254 -P dsr -Ph 3 -Pq 0 -Ps 2 -Pp 1* -Pn 2* -Pl 3
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0
s -t 152.640418300 -Hs 2 -Hd 43 -Ni 2 -Nx 562.19 -Ny 191.48 -Nz 0.00 -Ne
871.314626 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255  -It
DSR -Il 60 -If 0 -Ii 11 -Iv 254 -P dsr -Ph 4 -Pq 0 -Ps 2 -Pp 1 *-Pn 2* -Pl 4
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0
s -t 152.667064145 -Hs 2 -Hd 37 -Ni 2 -Nx 562.27 -Ny 191.50 -Nz 0.00 -Ne
871.275637 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255  -It
DSR -Il 68 -If 0 -Ii 12 -Iv 254 -P dsr -Ph 5 -Pq 0 -Ps 2 -Pp 1 *-Pn 2* -Pl 5
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0
s -t 152.668766609 -Hs 2 -Hd 34 -Ni 2 -Nx 562.27 -Ny 191.50 -Nz 0.00 -Ne
871.274148 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255  -It
DSR -Il 60 -If 0 -Ii 13 -Iv 254 -P dsr -Ph 4 -Pq 0 -Ps 2 -Pp 1* -Pn 2* -Pl 4
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

# and here are the traces where -Pn=0
s -t 152.757056298 -Hs 2 -Hd 40 -Ni 2 -Nx 562.52 -Ny 191.57 -Nz 0.00 -Ne
871.154088 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255 -It
DSR -Il 52 -If 0 -Ii 17 -Iv 255 -P dsr -Ph 3 -Pq 0 -Ps 0 -Pp 1 *-Pn 0* -Pl 3
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0
s -t 152.771144465 -Hs 2 -Hd 40 -Ni 2 -Nx 562.56 -Ny 191.58 -Nz 0.00 -Ne
871.134186 -Nl RTR -Nw --- -Ma 0 -Md 0 -Ms 0 -Mt 0 -Is 2.255 -Id 1.255 -It
DSR -Il 52 -If 0 -Ii 19 -Iv 255 -P dsr -Ph 3 -Pq 0 -Ps 0 -Pp 1 *-Pn 0* -Pl 3
-Pe 1->2 -Pw 0 -Pm 0 -Pc 0 -Pb 0->0

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