def test_arp_incomplete(self):
""" ARP Incomplete"""
- self.pg1.generate_remote_hosts(3)
+ self.pg1.generate_remote_hosts(4)
p0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4,
dst=self.pg1.remote_hosts[2].ip4) /
UDP(sport=1234, dport=1234) /
Raw())
+ p2 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst="1.1.1.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw())
#
# a packet to an unresolved destination generates an ARP request
is_static=1)
static_arp.add_vpp_config()
+ #
+ # add a route through remote host 3 hence we get an incomplete
+ #
+ VppIpRoute(self, "1.1.1.1", 32,
+ [VppRoutePath(self.pg1.remote_hosts[3].ip4,
+ self.pg1.sw_if_index)]).add_vpp_config()
+ rx = self.send_and_expect(self.pg0, [p2], self.pg1)
+ self.verify_arp_req(rx[0],
+ self.pg1.local_mac,
+ self.pg1.local_ip4,
+ self.pg1._remote_hosts[3].ip4)
+
#
# change the interface's MAC
#
"00:00:00:33:33:33",
self.pg1.local_ip4,
self.pg1._remote_hosts[2].ip4)
+ rx = self.send_and_expect(self.pg0, [p2], self.pg1)
+ self.verify_arp_req(rx[0],
+ "00:00:00:33:33:33",
+ self.pg1.local_ip4,
+ self.pg1._remote_hosts[3].ip4)
#
# packets to the resolved host also have the new source mac
"10.0.1.2",
"10.0.1.128")
+ # apply a connected prefix to an interface in a different table
+ VppIpRoute(self, "10.0.1.0", 24,
+ [VppRoutePath("0.0.0.0",
+ self.pg1.sw_if_index)],
+ table_id=1).add_vpp_config()
+
+ rxs = self.send_and_expect(self.pg3, [p2], self.pg1)
+ for rx in rxs:
+ self.verify_arp_req(rx,
+ self.pg1.local_mac,
+ "10.0.1.2",
+ "10.0.1.128")
+
# cleanup
conn3.remove_vpp_config()
conn2.remove_vpp_config()
i.unconfig_ip6()
i.admin_down()
- def wait_for_no_nbr(self, intf, address,
- n_tries=50, s_time=1):
- while (n_tries):
- if not find_nbr(self, intf, address):
- return True
- n_tries = n_tries - 1
- self.sleep(s_time)
-
- return False
-
def verify_arp_req(self, rx, smac, sip, dip):
ether = rx[Ether]
self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
self.vapi.cli("sh ip4 neighbor-sorted")
+ # age out neighbors
+ self.virtual_sleep(3)
+
#
# expect probes from all these ARP entries as they age
# 3 probes for each neighbor 3*200 = 600
- rxs = self.pg0.get_capture(600, timeout=8)
+ rxs = self.pg0.get_capture(600, timeout=2)
for ii in range(3):
for jj in range(200):
# 3 probes sent then 1 more second to see if a reply comes, before
# they age out
#
- for jj in range(1, 201):
- self.wait_for_no_nbr(self.pg0.sw_if_index,
- self.pg0.remote_hosts[jj].ip4)
+ self.virtual_sleep(1)
self.assertFalse(self.vapi.ip_neighbor_dump(sw_if_index=0xffffffff,
af=vaf.ADDRESS_IP4))
self.assertEqual(e.neighbor.mac_address,
self.pg0.remote_hosts[ii].mac)
- self.sleep(10)
+ self.virtual_sleep(10)
self.assertFalse(self.vapi.ip_neighbor_dump(sw_if_index=0xffffffff,
af=vaf.ADDRESS_IP4))
max_age=0,
recycle=False)
- self.sleep(10)
+ self.virtual_sleep(10)
self.assertTrue(find_nbr(self,
self.pg0.sw_if_index,
self.pg0.remote_hosts[0].ip4))