def setup_module(mod):
"Sets up the pytest environment"
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
router_list = tgen.routers()
for rname, router in router_list.items():
router.load_config(TopoRouter.RD_ZEBRA,
os.path.join(CWD, "{}/zebra.conf".format(rname)))
router.load_config(TopoRouter.RD_OSPF,
os.path.join(CWD, "{}/ospfd.conf".format(rname)))
# What is this? OSPF Unnumbered depends on the rp_filter
# being set appropriately( HA! )
# Effectively we are putting different /32's on the interface
# the multicast packet delivery is somewhat controlled by
# the rp_filter. Setting it to '0' allows the OS to pass
# up the mcast packet not destined for the local routers
# network.
topotest.sysctl_assure(tgen.net["r1"],
"net.ipv4.conf.r1-eth1.rp_filter", 0)
topotest.sysctl_assure(tgen.net["r1"], "net.ipv4.conf.all.rp_filter",
0)
topotest.sysctl_assure(tgen.net["r2"],
"net.ipv4.conf.r2-eth1.rp_filter", 0)
topotest.sysctl_assure(tgen.net["r2"], "net.ipv4.conf.all.rp_filter",
0)
# Initialize all routers.
tgen.start_router()
def start(self):
"""
Start router:
* Load modules
* Clean up files
* Configure interfaces
* Start daemons (e.g. FRR)
* Configure daemon logging files
"""
nrouter = self.net
result = nrouter.startRouter(self.tgen)
# Enable command logging
# Enable all daemon command logging, logging files
# and set them to the start dir.
for daemon, enabled in nrouter.daemons.items():
if enabled and daemon != "snmpd":
self.vtysh_cmd(
"\n".join([
"clear log cmdline-targets",
"conf t",
"log file {}.log debug".format(daemon),
"log commands",
"log timestamp precision 3",
]),
daemon=daemon,
)
if result != "":
self.tgen.set_error(result)
elif nrouter.daemons["ldpd"] == 1 or nrouter.daemons["pathd"] == 1:
# Enable MPLS processing on all interfaces.
for interface in self.links:
topotest.sysctl_assure(
nrouter, "net.mpls.conf.{}.input".format(interface), 1)
return result
def setup_module(mod):
"Sets up the pytest environment"
# This function initiates the topology build with Topogen...
tgen = Topogen(build_topo, mod.__name__)
# Skip if no mpls support
if not tgen.hasmpls:
logger.info("MPLS is not available, skipping test")
pytest.skip("MPLS is not available, skipping")
return
# ... and here it calls Mininet initialization functions.
tgen.start_topology()
# This is a sample of configuration loading.
router_list = tgen.routers()
# Enable mpls input for routers, so we can ping
sval = "net.mpls.conf.{}.input"
topotest.sysctl_assure(router_list["R2"], sval.format("R2-eth0"), 1)
topotest.sysctl_assure(router_list["R1"], sval.format("R1-eth0"), 1)
topotest.sysctl_assure(router_list["R1"], sval.format("R1-eth1"), 1)
topotest.sysctl_assure(router_list["R4"], sval.format("R4-eth0"), 1)
# For all registered routers, load the zebra configuration file
for rname, router in router_list.items():
router.load_config(TopoRouter.RD_ZEBRA,
os.path.join(CWD, "{}/zebra.conf".format(rname)))
router.load_config(TopoRouter.RD_BGP,
os.path.join(CWD, "{}/bgpd.conf".format(rname)))
# Have static config for R3 too
if router == router_list["R3"]:
router.load_config(
TopoRouter.RD_STATIC,
os.path.join(CWD, "{}/staticd.conf".format(rname)))
# After loading the configurations, this function loads configured daemons.
tgen.start_router()