A method and apparatus for increasing {HEAD ~ the capability} of a network topology model having a plurality of {TAIL ~ nodes} connected by existing links to maintain service continuity in the presence of faults 
A method and apparatus for increasing { HEAD ~ the capability } of a network topology model having a plurality of { TAIL ~ nodes } connected by existing links to maintain service continuity in the presence of faults
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH