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