Hi ns_user:
I encounter some troubles when I simulate rsvp/ns module under micromobility
environment in NS2. Because micromobility(CIMS) module uses hierarchical
address to identify nodes, but rsvp uses flat format address. Every time I run
the tcl script, NS2 gives me an error message "no target for slot 1".
I checked inside NS2's C++ code, and found this error is raised in function:
Classifier::find(...).
NsObject* Classifier::find(Packet* p)
{
NsObject* node = NULL;
int cl = classify(p);
if (cl < 0 || cl >= nslot_ || (node = slot_[cl]) == 0) {
if (default_target_) return default_target_;
/*
* Sigh. Can't pass the pkt out to tcl because it's
* not an object.
*/
Tcl::instance().evalf("%s no-slot %ld", name(), cl);
if (cl == TWICE) {
/*
* Try again. Maybe callback patched up the table.
*/
cl = classify(p);
if (cl < 0 || cl >= nslot_ || (node = slot_[cl]) == 0)
return (NULL);
}
}
return (node);
}
In the conditional statement of "if (cl < 0 || cl >= nslot_ || (node =
slot_[cl]) == 0)", node was assigned a NULL value, so the next segment
"Tcl::instance().evalf("%s no-slot %ld", name(), cl);" was executed because the
member variable "default_target_" was initialized to NULL.
What should I do in order to make rsvp/ns module compatible with hierarchical
format address? Make some modification about NS2's C++ code such as the
classifier, route, etc??
Please help me!
Best regards!
Andy
