Hello.
This is some different story..
After I changed routing protocol from DSDV to AODV, I experienced zero
handover time..
I hope this helps you..
2006/5/23, altaf hussain <[EMAIL PROTECTED]>:
>
> Hi Users. I hope al of u would be OK. I have been working on Mobile IP v4
> implemented in ns-2.28. There is a bug in the implementation of Mobile IP in
> ns2 and that have been reported by Michal in AUGUST 2005.
> The modifications indicated by Michal are infact confusing me.
> The function to get the current mobile node get_node_michu() is giving
> problems while compiling.
> I am posting the modificatins done by Michal. Can any one really give me a
> better and working modification in ns-2.28
> Thanks
>
> Michal
>
> PS. Below there is ll:recv() function with my modifications.
>
> _/*
> This shall be added in arp.cc
> MobileNode*
> ARPTable::get_node_michu()
> {
> return node_;
> }
> */
>
> void LL::recv(Packet* p, Handler* _/*h*/)
> {
> hdr_cmn *ch = HDR_CMN(p);
> hdr_arp *ah = HDR_ARP(p);
> hdr_mip *miph = hdr_mip::access(p);
> hdr_ip *ip_h = hdr_ip::access(p);
>
>
>
> //char *mh = (char*) HDR_MAC(p);
> //struct hdr_sr *hsr = HDR_SR(p);
>
> _/*
> * Sanity Check
> */
> assert(initialized());
>
> //if(p->incoming) {
> //p->incoming = 0;
> //}
> // XXXXX NOTE: use of incoming flag has been depracated; In order to track
> direction of pkt flow, direction_ in hdr_cmn is used instead. see packet.h
> for details.
>
> // If direction = UP, then pass it up the stack
> // Otherwise, set direction to DOWN and pass it down the stack
> if(ch->direction() == hdr_cmn::UP) {
> //if(mac_->hdr_type(mh) == ETHERTYPE_ARP)
> if(ch->ptype_ == PT_ARP){
>
>
> if(ah->arp_spa == 4194305) // I mean Mobile Node's IP here. Not very
> elegant way to do it
> {
> if(licznik < 10)
> {
> nsaddr_t src_arp = arptable_->get_node_michu()->address(); // this host's
> IP addr
> nsaddr_t dst_arp = miph->ha_; //Home Address of Mobile Node
> arptable_->arprequest(src_arp, dst_arp, this);
>
> licznik++;
> //printf(" src_arp %d\n", src_arp);
> //printf(" dst_arp %d\n", dst_arp);
> //printf("arprequest %d\n", licznik);
> }
> }
>
> if(ah->arp_spa == 4194304) // I mean Mobile Node's IP here. Not very
> elegant way to do it
> {
> if(licznik2 < 10)
> {
> nsaddr_t src_arp = arptable_->get_node_michu()->address(); // this host's
> IP addr
> nsaddr_t dst_arp = miph->ha_; //Home Address of Mobile Node
> arptable_->arprequest(src_arp, dst_arp, this);
>
> licznik2++;
> //printf(" src_arp %d\n", src_arp);
> //printf(" dst_arp %d\n", dst_arp);
> //printf("arprequest %d\n", licznik);
> }
> }
>
> if(ah->arp_spa == 8388608) // I mean Mobile Node's IP here. Not very
> elegant way to do it
> {
> if(licznik3 < 10)
> {
> nsaddr_t src_arp = arptable_->get_node_michu()->address(); // this host's
> IP addr
> nsaddr_t dst_arp = miph->ha_; //Home Address of Mobile Node
> arptable_->arprequest(src_arp, dst_arp, this);
>
> licznik3++;
> //printf(" src_arp %d\n", src_arp);
> //printf(" dst_arp %d\n", dst_arp);
> //printf("arprequest %d\n", licznik);
> }
> }
>
>
> arptable_->arpinput(p, this);
> //printf("arpinput %d\n", licznik);
> }
> else
> {
>
> if((miph->type_ == MIPT_REG_REQUEST) || (miph->type_ == MIPT_REG_REPLY) ||
> (miph->type_ == MIPT_SOL)) //in FA
> {
> nsaddr_t src = arptable_->get_node_michu()->address(); // this host's IP
> addr
> nsaddr_t dst = miph->ha_; //Home Address of Mobile Node
> arptable_->arprequest(src, dst, this);
>
> //uptarget_ ? sendUp(p) : drop(p);
> //printf(" src %d\n", src);
> //printf(" dst %d\n", dst);
> //printf("uptarget_ MIPT_REG_REQUEST\n");
>
> }
>
>
> uptarget_ ? sendUp(p) : drop(p);
> //printf("uptarget_\n");
>
> }
> return;
> }
>
>
> if((miph->type_) == MIPT_REG_REQUEST)
> {
> //double local_time = Scheduler::instance().clock();
> //printf(" local_time MIPT_REG_REQUEST %.9f\n", local_time);
>
> // printf("MIPT_REG_REQUEST %d \n",
> arptable_->get_node_michu()->address());
> nsaddr_t src_down = 4194305;
> //arptable_->get_node_michu()->address(); // this host's IP addr
> nsaddr_t dst_down = miph->coa_; //miph->coa_;
> arptable_->arprequest(src_down, dst_down, this);
> }
> else if((miph->type_) == MIPT_ADS)
> {
> //double local_time = Scheduler::instance().clock();
> //printf(" local_time MIPT_REG_REQUEST %.9f\n", local_time);
>
> nsaddr_t src_down = 4194305;
> //arptable_->get_node_michu()->address(); // this host's IP addr
> nsaddr_t dst_down = miph->coa_;
> arptable_->arprequest(src_down, dst_down, this);
> }
>
> _/*
> nsaddr_t src_down = 4194305;
> nsaddr_t dst_down = 8388608;
> arptable_->arprequest(src_down, dst_down, this);
>
> nsaddr_t src_down = 8388608;
> nsaddr_t dst_down = 4194305;
> arptable_->arprequest(src_down, dst_down, this);
>
> nsaddr_t src_down = 8388608;
> nsaddr_t dst_down = 4194304;
> arptable_->arprequest(src_down, dst_down, this);
> */
>
>
> double local_time = Scheduler::instance().clock();
> if(local_time < 13)
> {
> printf(" time %.9f node %d packet %s\n", local_time,
> arptable_->get_node_michu()->address(), packet_info.name(ch->ptype()));
> }
>
>
> ch->direction() = hdr_cmn::DOWN;
> sendDown(p);
> }
>
>
>
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