def _create_extensions(self):
# Determine number of border routers on path in single direction
routers_no = (self.path.get_as_hops() - 1) * 2
# Number of router for round-trip (return path is symmetric)
routers_no *= 2
# Extensions
exts = []
# Create empty Traceroute extensions with allocated space
exts.append(TracerouteExt.from_values(routers_no))
# Create PathTransportExtension
# One with data-plane path.
of_path = PathTransOFPath.from_values(self.addr, self.dst, self.path)
exts.append(
PathTransportExt.from_values(PathTransType.OF_PATH, of_path))
return exts
def _create_extensions(self):
return [TracerouteExt.from_values(5)]
def _create_extensions(self):
exts = []
exts.append(TracerouteExt.from_values(5))
exts.append(SCMPExt.from_values(error=False))
return exts
def _create_extensions(self):
exts = []
for i in range(MAX_HOPBYHOP_EXT + 1):
exts.append(TracerouteExt.from_values(5))
return exts