def run_dhclient(self, tmpdir, interface=None, timeout=10):
"""Run DHCLIENT to obtain ip address via DHCP"""
if interface is None:
interface = self.defaultIntf()
cmd = 'dhclient'
opts = ''
opts += ' -1'
opts += ' -d'
opts += ' -pf %s/dhclient-%s.pid' % (tmpdir, self.name)
opts += ' -lf %s/dhclient-%s.leases' % (tmpdir, self.name)
opts += ' %s' % interface
dhclient_cmd = cmd + opts
return self.cmd(mininet_test_util.timeout_cmd(dhclient_cmd, timeout), verbose=True)
def verify_stack_hosts(self, verify_bridge_local_rule=True, retries=3):
"""Verify hosts with stack LLDP messages"""
lldp_cap_files = []
for host in self.hosts_name_ordered():
lldp_cap_file = os.path.join(self.tmpdir, '%s-lldp.cap' % host)
lldp_cap_files.append(lldp_cap_file)
host.cmd(timeout_cmd(
'tcpdump -U -n -c 1 -i %s -w %s ether proto 0x88CC and not ether src %s &' % (
host.defaultIntf(), host.MAC(), lldp_cap_file), 60))
# should not flood LLDP from hosts
self.verify_lldp_blocked(self.hosts_name_ordered())
# hosts should see no LLDP probes
self.verify_empty_caps(lldp_cap_files)
if verify_bridge_local_rule:
# Verify 802.1x flood block triggered.
for dpid in self.dpids:
self.wait_nonzero_packet_count_flow(
{'dl_dst': '01:80:c2:00:00:00/ff:ff:ff:ff:ff:f0'},
dpid=dpid, table_id=self._FLOOD_TABLE, ofa_match=False)
self.retry_net_ping(retries=retries)
