self.assertEqual(arp.psrc, sip)
self.assertEqual(arp.pdst, dip)
+ def verify_arp_vrrp_resp(self, rx, smac, dmac, sip, dip):
+ ether = rx[Ether]
+ self.assertEqual(ether.dst, dmac)
+ self.assertEqual(ether.src, smac)
+
+ arp = rx[ARP]
+ self.assertEqual(arp.hwtype, 1)
+ self.assertEqual(arp.ptype, 0x800)
+ self.assertEqual(arp.hwlen, 6)
+ self.assertEqual(arp.plen, 4)
+ self.assertEqual(arp.op, arp_opts["is-at"])
+ self.assertNotEqual(arp.hwsrc, smac)
+ self.assertTrue("00:00:5e:00:01" in arp.hwsrc or
+ "00:00:5E:00:01" in arp.hwsrc)
+ self.assertEqual(arp.hwdst, dmac)
+ self.assertEqual(arp.psrc, sip)
+ self.assertEqual(arp.pdst, dip)
+
def verify_ip(self, rx, smac, dmac, sip, dip):
ether = rx[Ether]
self.assertEqual(ether.dst, dmac)
intf.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
+ timeout = 1
for i in self.pg_interfaces:
+ i.get_capture(0, timeout=timeout)
i.assert_nothing_captured(remark=remark)
+ timeout = 0.1
def test_arp(self):
""" ARP """
# ERROR Cases
# 1 - don't respond to ARP request for address not within the
# interface's sub-net
- # 1a - nor within the unnumbered subnet
+ # 1b - nor within the unnumbered subnet
+ # 1c - nor within the subnet of a different interface
+ #
p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
ARP(op="who-has",
hwsrc=self.pg0.remote_mac,
psrc=self.pg0.remote_ip4))
self.send_and_assert_no_replies(self.pg0, p,
"ARP req for non-local destination")
+ self.assertFalse(find_nbr(self,
+ self.pg0.sw_if_index,
+ "10.10.10.3"))
+
p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) /
ARP(op="who-has",
hwsrc=self.pg2.remote_mac,
self.pg0, p,
"ARP req for non-local destination - unnum")
+ p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
+ ARP(op="who-has",
+ hwsrc=self.pg0.remote_mac,
+ pdst=self.pg1.local_ip4,
+ psrc=self.pg1.remote_ip4))
+ self.send_and_assert_no_replies(self.pg0, p,
+ "ARP req diff sub-net")
+ self.assertFalse(find_nbr(self,
+ self.pg0.sw_if_index,
+ self.pg1.remote_ip4))
+
#
# 2 - don't respond to ARP request from an address not within the
# interface's sub-net
def test_proxy_arp(self):
""" Proxy ARP """
+ self.pg1.generate_remote_hosts(2)
+
#
# Proxy ARP rewquest packets for each interface
#
- arp_req_pg2 = (Ether(src=self.pg2.remote_mac,
- dst="ff:ff:ff:ff:ff:ff") /
- ARP(op="who-has",
- hwsrc=self.pg2.remote_mac,
- pdst="10.10.10.3",
- psrc=self.pg1.remote_ip4))
arp_req_pg0 = (Ether(src=self.pg0.remote_mac,
dst="ff:ff:ff:ff:ff:ff") /
ARP(op="who-has",
hwsrc=self.pg1.remote_mac,
pdst="10.10.10.3",
psrc=self.pg1.remote_ip4))
+ arp_req_pg2 = (Ether(src=self.pg2.remote_mac,
+ dst="ff:ff:ff:ff:ff:ff") /
+ ARP(op="who-has",
+ hwsrc=self.pg2.remote_mac,
+ pdst="10.10.10.3",
+ psrc=self.pg1.remote_hosts[1].ip4))
arp_req_pg3 = (Ether(src=self.pg3.remote_mac,
dst="ff:ff:ff:ff:ff:ff") /
ARP(op="who-has",
self.pg2.local_mac,
self.pg2.remote_mac,
"10.10.10.3",
- self.pg1.remote_ip4)
+ self.pg1.remote_hosts[1].ip4)
#
# A request for an address out of the configured range
"10.0.0.1")
self.pg2.unconfig_ip4()
+ def test_arp_vrrp(self):
+ """ ARP reply with VRRP virtual src hw addr """
+
+ #
+ # IP packet destined for pg1 remote host arrives on pg0 resulting
+ # in an ARP request for the address of the remote host on pg1
+ #
+ p0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw())
+
+ self.pg0.add_stream(p0)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx1 = self.pg1.get_capture(1)
+
+ self.verify_arp_req(rx1[0],
+ self.pg1.local_mac,
+ self.pg1.local_ip4,
+ self.pg1.remote_ip4)
+
+ #
+ # ARP reply for address of pg1 remote host arrives on pg1 with
+ # the hw src addr set to a value in the VRRP IPv4 range of
+ # MAC addresses
+ #
+ p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ ARP(op="is-at", hwdst=self.pg1.local_mac,
+ hwsrc="00:00:5e:00:01:09", pdst=self.pg1.local_ip4,
+ psrc=self.pg1.remote_ip4))
+
+ self.pg1.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # IP packet destined for pg1 remote host arrives on pg0 again.
+ # VPP should have an ARP entry for that address now and the packet
+ # should be sent out pg1.
+ #
+ self.pg0.add_stream(p0)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx1 = self.pg1.get_capture(1)
+
+ self.verify_ip(rx1[0],
+ self.pg1.local_mac,
+ "00:00:5e:00:01:09",
+ self.pg0.remote_ip4,
+ self.pg1.remote_ip4)
+
+ self.pg1.admin_down()
+ self.pg1.admin_up()
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)