The present invention assists network administrators in evaluating the “cost of {HEAD ~ survivability}” for {TAIL ~ network topologies} belonging to both commercial and educational Internet Service Providers  
for
The present invention assists network administrators in evaluating the “ cost of { HEAD ~ survivability } ” for { TAIL ~ network topologies } belonging to both commercial and educational Internet Service Providers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH