def test_standby_tor_downstream_bgp_recovered(
rand_selected_dut, require_mocked_dualtor,
verify_crm_nexthop_counter_not_increased, get_testbed_params, tbinfo):
"""
Verify traffic is shifted to the active links and no traffic drop observed;
Verify traffic is distributed evenly after BGP session is recovered;
Verify CRM that no new nexthop created
"""
# require real dualtor, because for mocked testbed, the route to standby is mocked.
pt_require('dualtor' in tbinfo['topo']['name'],
"Only run on dualtor testbed")
PAUSE_TIME = 30
down_bgp = shutdown_random_one_bgp_session(rand_selected_dut)
time.sleep(PAUSE_TIME)
params = get_testbed_params()
try:
check_tunnel_balance(**params)
except Exception as e:
startup_bgp_session(rand_selected_dut, down_bgp)
raise e
startup_bgp_session(rand_selected_dut, down_bgp)
time.sleep(PAUSE_TIME)
params = get_testbed_params()
check_tunnel_balance(**params)
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 proxy_arp_enabled(rand_selected_dut, config_facts):
"""
Tries to enable proxy ARP for each VLAN on the ToR
Also checks CONFIG_DB to see if the attempt was successful
During teardown, restores the original proxy ARP setting
Yields:
(bool) True if proxy ARP was enabled for all VLANs,
False otherwise
"""
duthost = rand_selected_dut
pt_require(duthost.has_config_subcommand('config vlan proxy_arp'),
"Proxy ARP command does not exist on device")
proxy_arp_check_cmd = 'sonic-db-cli CONFIG_DB HGET "VLAN_INTERFACE|Vlan{}" proxy_arp'
proxy_arp_config_cmd = 'config vlan proxy_arp {} {}'
vlans = config_facts['VLAN']
vlan_ids = [vlans[vlan]['vlanid'] for vlan in vlans.keys()]
old_proxy_arp_vals = {}
new_proxy_arp_vals = []
# Enable proxy ARP/NDP for the VLANs on the DUT
for vid in vlan_ids:
old_proxy_arp_res = duthost.shell(proxy_arp_check_cmd.format(vid))
old_proxy_arp_vals[vid] = old_proxy_arp_res['stdout']
duthost.shell(proxy_arp_config_cmd.format(vid, 'enabled'))
logger.info("Enabled proxy ARP for Vlan{}".format(vid))
new_proxy_arp_res = duthost.shell(proxy_arp_check_cmd.format(vid))
new_proxy_arp_vals.append(new_proxy_arp_res['stdout'])
yield all('enabled' in val for val in new_proxy_arp_vals)
for vid, proxy_arp_val in old_proxy_arp_vals.items():
if 'enabled' not in proxy_arp_val:
duthost.shell(proxy_arp_config_cmd.format(vid, 'disabled'))
