def test_standby_tor_downstream_t1_link_recovered(
rand_selected_dut, require_mocked_dualtor,
verify_crm_nexthop_counter_not_increased, tbinfo, get_testbed_params):
"""
Verify traffic is distributed evenly after t1 link is recovered;
Verify CRM that no new nexthop created
"""
PAUSE_TIME = 30
down_link = shutdown_random_one_t1_link(rand_selected_dut)
time.sleep(PAUSE_TIME)
params = get_testbed_params()
try:
check_tunnel_balance(**params)
except Exception as e:
no_shutdown_t1_link(rand_selected_dut, down_link)
raise e
no_shutdown_t1_link(rand_selected_dut, down_link)
time.sleep(PAUSE_TIME)
params = get_testbed_params()
# For mocked dualtor, we should update static route manually after link recovered
if 't0' in tbinfo['topo']['name']:
remove_static_routes(rand_selected_dut, params['active_tor_ip'])
add_nexthop_routes(rand_selected_dut, params['active_tor_ip'])
check_tunnel_balance(**params)
def test_downstream_ecmp_nexthops(ptfadapter, rand_selected_dut, tbinfo,
require_mocked_dualtor,
toggle_all_simulator_ports, tor_mux_intfs):
dst_server_ipv4 = "1.1.1.2"
nexthops_count = 4
set_mux_state(rand_selected_dut, tbinfo, 'active', tor_mux_intfs,
toggle_all_simulator_ports)
iface_server_map = get_interface_server_map(rand_selected_dut,
nexthops_count)
interface_to_server = dict()
for interface, servers in iface_server_map.items():
interface_to_server[interface] = servers['server_ipv4'].split("/")[0]
nexthop_servers = list(interface_to_server.values())
nexthop_interfaces = list(interface_to_server.keys())
logging.info("Add route with four nexthops, where four muxes are active")
add_nexthop_routes(rand_selected_dut,
dst_server_ipv4,
nexthops=nexthop_servers[0:nexthops_count])
logging.info(
"Verify traffic to this route destination is distributed to four server ports"
)
check_nexthops_balance(rand_selected_dut, ptfadapter, dst_server_ipv4,
tbinfo, nexthop_interfaces, nexthops_count)
### Sequentially set four mux states to standby
for index, interface in enumerate(nexthop_interfaces):
uplink_ports_active = index + 1
logging.info("Simulate {} mux state change to Standby".format(
nexthop_servers[index]))
set_mux_state(rand_selected_dut, tbinfo, 'standby', [interface],
toggle_all_simulator_ports)
logging.info("Verify traffic to this route destination is distributed to"\
" {} server ports and {} tunnel nexthop".format(
nexthops_count-uplink_ports_active, uplink_ports_active))
check_nexthops_balance(
rand_selected_dut, ptfadapter, dst_server_ipv4, tbinfo,
nexthop_interfaces[uplink_ports_active:nexthops_count],
nexthops_count)
### Revert two mux states to active
for index, interface in reversed(list(enumerate(nexthop_interfaces))):
logging.info("Simulate {} mux state change back to Active".format(
nexthop_servers[index]))
set_mux_state(rand_selected_dut, tbinfo, 'active', [interface],
toggle_all_simulator_ports)
logging.info("Verify traffic to this route destination is distributed to"\
" {} server ports and {} tunnel nexthop".format(nexthops_count-index, index))
check_nexthops_balance(rand_selected_dut, ptfadapter, dst_server_ipv4,
tbinfo,
nexthop_interfaces[index:nexthops_count],
nexthops_count)
### Remove the nexthop route
remove_static_routes(rand_selected_dut, dst_server_ipv4)
def test_standby_tor_downstream_loopback_route_readded(ptfhost, rand_selected_dut, rand_unselected_dut, tbinfo):
"""
Verify traffic is equally distributed via loopback route
"""
pt_require('dualtor' in tbinfo['topo']['name'], "Only run on dualtor testbed")
params = dualtor_info(ptfhost, rand_selected_dut, rand_unselected_dut, tbinfo)
active_tor_loopback0 = params['active_tor_ip']
# Remove loopback routes and verify traffic is equally distributed
remove_static_routes(rand_selected_dut, active_tor_loopback0)
check_tunnel_balance(**params)
# Readd loopback routes and verify traffic is equally distributed
add_nexthop_routes(rand_selected_dut, active_tor_loopback0)
check_tunnel_balance(**params)
def test_downstream_standby_mux_toggle_active(
conn_graph_facts, ptfadapter, ptfhost,
rand_selected_dut, rand_unselected_dut, tbinfo,
require_mocked_dualtor, tunnel_traffic_monitor,
vmhost, toggle_all_simulator_ports, tor_mux_intfs
):
# set rand_selected_dut as standby and rand_unselected_dut to active tor
test_params = dualtor_info(ptfhost, rand_selected_dut, rand_unselected_dut, tbinfo)
server_ipv4 = test_params["target_server_ip"]
random_dst_ip = "1.1.1.2"
pkt, exp_pkt = build_packet_to_server(rand_selected_dut, ptfadapter, random_dst_ip)
ptf_t1_intf = random.choice(get_t1_ptf_ports(rand_selected_dut, tbinfo))
def monitor_tunnel_and_server_traffic(torhost, expect_tunnel_traffic=True, expect_server_traffic=True):
tunnel_monitor = tunnel_traffic_monitor(rand_selected_dut, existing=True)
server_traffic_monitor = ServerTrafficMonitor(
torhost, ptfhost, vmhost, tbinfo, test_params["selected_port"],
conn_graph_facts, exp_pkt, existing=False, is_mocked=is_mocked_dualtor(tbinfo)
)
tunnel_monitor.existing = expect_tunnel_traffic
server_traffic_monitor.existing = expect_server_traffic
with tunnel_monitor, server_traffic_monitor:
testutils.send(ptfadapter, int(ptf_t1_intf.strip("eth")), pkt, count=10)
logger.info("Stage 1: Verify Standby Forwarding")
logger.info("Step 1.1: Add route to a nexthop which is a standby Neighbor")
set_mux_state(rand_selected_dut, tbinfo, 'standby', tor_mux_intfs, toggle_all_simulator_ports)
add_nexthop_routes(rand_selected_dut, random_dst_ip, nexthops=[server_ipv4])
logger.info("Step 1.2: Verify traffic to this route dst is forwarded to Active ToR and equally distributed")
check_tunnel_balance(**test_params)
monitor_tunnel_and_server_traffic(rand_selected_dut, expect_server_traffic=False, expect_tunnel_traffic=True)
logger.info("Stage 2: Verify Active Forwarding")
logger.info("Step 2.1: Simulate Mux state change to active")
set_mux_state(rand_selected_dut, tbinfo, 'active', tor_mux_intfs, toggle_all_simulator_ports)
logger.info("Step 2.2: Verify traffic to this route dst is forwarded directly to server")
monitor_tunnel_and_server_traffic(rand_selected_dut, expect_server_traffic=True, expect_tunnel_traffic=False)
logger.info("Stage 3: Verify Standby Forwarding Again")
logger.info("Step 3.1: Simulate Mux state change to standby")
set_mux_state(rand_selected_dut, tbinfo, 'standby', tor_mux_intfs, toggle_all_simulator_ports)
logger.info("Step 3.2: Verify traffic to this route dst is now redirected back to Active ToR and equally distributed")
monitor_tunnel_and_server_traffic(rand_selected_dut, expect_server_traffic=False, expect_tunnel_traffic=True)
check_tunnel_balance(**test_params)
remove_static_routes(rand_selected_dut, random_dst_ip)
def test_downstream_ecmp_nexthops(ptfadapter, rand_selected_dut, tbinfo,
require_mocked_dualtor,
toggle_all_simulator_ports, tor_mux_intfs,
ip_version):
nexthops_count = 4
set_mux_state(rand_selected_dut, tbinfo, 'active', tor_mux_intfs,
toggle_all_simulator_ports)
iface_server_map = get_interface_server_map(rand_selected_dut,
nexthops_count)
if ip_version == "ipv4":
dst_server_addr = "1.1.1.2"
interface_to_server = {
intf: servers["server_ipv4"].split("/")[0]
for intf, servers in iface_server_map.items()
}
elif ip_version == "ipv6":
dst_server_addr = "fc10:2020::f"
interface_to_server = {
intf: servers["server_ipv6"].split("/")[0]
for intf, servers in iface_server_map.items()
}
else:
raise ValueError("Unknown IP version '%s'" % ip_version)
nexthop_servers = list(interface_to_server.values())
nexthop_interfaces = list(interface_to_server.keys())
logging.info("Add route with four nexthops, where four muxes are active")
add_nexthop_routes(rand_selected_dut,
dst_server_addr,
nexthops=nexthop_servers)
try:
logging.info(
"Verify traffic to this route destination is distributed to four server ports"
)
check_nexthops_balance(rand_selected_dut, ptfadapter, dst_server_addr,
tbinfo, nexthop_interfaces, nexthops_count)
### Sequentially set four mux states to standby
for index, interface in enumerate(nexthop_interfaces):
uplink_ports_active = index + 1
logging.info("Simulate {} mux state change to Standby".format(
nexthop_servers[index]))
set_mux_state(rand_selected_dut, tbinfo, 'standby', [interface],
toggle_all_simulator_ports)
logging.info("Verify traffic to this route destination is distributed to"\
" {} server ports and {} tunnel nexthop".format(
nexthops_count-uplink_ports_active, uplink_ports_active))
check_nexthops_balance(
rand_selected_dut, ptfadapter, dst_server_addr, tbinfo,
nexthop_interfaces[uplink_ports_active:nexthops_count],
nexthops_count)
### Revert two mux states to active
for index, interface in reversed(list(enumerate(nexthop_interfaces))):
logging.info("Simulate {} mux state change back to Active".format(
nexthop_servers[index]))
set_mux_state(rand_selected_dut, tbinfo, 'active', [interface],
toggle_all_simulator_ports)
logging.info("Verify traffic to this route destination is distributed to"\
" {} server ports and {} tunnel nexthop".format(nexthops_count-index, index))
check_nexthops_balance(rand_selected_dut, ptfadapter,
dst_server_addr, tbinfo,
nexthop_interfaces[index:nexthops_count],
nexthops_count)
finally:
### Remove the nexthop route
remove_static_routes(rand_selected_dut, dst_server_addr)