Linkset Object Structure
Name: one per linkset object
type: choose from updown, across
nodesetbegin: name of initial nodeset joined by this linkset
nodesetend: name of final nodeset joined buy this linkset
topology: used for across networks to specify linkage between members of a single nodeset
duplex: choose from full or half
number: number of members of this linkset in the architecture
latency: time to send zero length message across any member of linkset
bandwidth: maximum bandwidth allowed in any link of this linkset
send(): method that calculates cost of sending a message across the linkset
distribution: name of geometric distribution controlling this linkset
linkset_member_list: list of linkset members in this linkset ( for linkset member identification )