130 Simulation Technologies in Networking and Communications
• logle—The specied le will be used for storing log information, which can also be used
for debugging purposes.
• extracode—Species a le that contains code that should be added to the base code specied
in the “prog” directive.
• ipaddr1—Virtual IP address of the network interface of end system devices or of interface 1
of router devices.
• ipaddr2—Virtual IP address of interface 2 of router devices.
• gateway—Address of the router that should be used for routing packet whose destination is
not in the routing table of the virtual device.
• routing—Routing table of the virtual device; the format of each table entry is the fol-
lowing: <network address>::<next hop>. For insta