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tests: increase ping attempts in EVPN MH to fix failures on ARM

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There are two fixes to handle slow convergence on ARM -
1. Ping on every re-try attempt to account for initial packet loss
2. Handle incomplete show outputs gracefully

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
This commit is contained in:
Anuradha Karuppiah 2021-02-16 11:17:04 -08:00 committed by Anuradha Karuppiah
parent 74be8313d4
commit 6bf6282da9
1 changed files with 17 additions and 9 deletions
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26
tests/topotests/bgp-evpn-mh/test_evpn_mh.py
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@ -482,7 +482,7 @@ def check_es(dut):
curr_es_set.append(esi)
types = es["type"]
vtep_ips = []
for vtep in es["vteps"]:
for vtep in es.get("vteps", []):
vtep_ips.append(vtep["vtep_ip"])
if "local" in types:
@ -513,7 +513,7 @@ def check_one_es(dut, esi, down_vteps):
esi = es["esi"]
types = es["type"]
vtep_ips = []
for vtep in es["vteps"]:
for vtep in es.get("vteps", []):
vtep_ips.append(vtep["vtep_ip"])
if "local" in types:
@ -593,11 +593,24 @@ def test_evpn_ead_update():
# tgen.mininet_cli()
def check_mac(dut, vni, mac, m_type, esi, intf):
def ping_anycast_gw(tgen):
local_host = tgen.gears["hostd11"]
remote_host = tgen.gears["hostd21"]
# ping the anycast gw from the local and remote hosts to populate
# the mac address on the PEs
cmd_str = "arping -I torbond -c 1 45.0.0.1"
local_host.run(cmd_str)
remote_host.run(cmd_str)
def check_mac(dut, vni, mac, m_type, esi, intf, ping_gw=False, tgen=None):
"""
checks if mac is present and if desination matches the one provided
"""
if ping_gw:
ping_anycast_gw(tgen)
out = dut.vtysh_cmd("show evpn mac vni %d mac %s json" % (vni, mac))
mac_js = json.loads(out)
@ -627,11 +640,6 @@ def test_evpn_mac():
tors.append(tgen.gears["torm11"])
tors.append(tgen.gears["torm12"])
# ping the anycast gw from the local and remote hosts to populate
# the mac address on the PEs
local_host.run("arping -I torbond -c 1 45.0.0.1")
remote_host.run("arping -I torbond -c 1 45.0.0.1")
vni = 1000
# check if the rack-1 host MAC is present on all rack-1 PEs
@ -642,7 +650,7 @@ def test_evpn_mac():
intf = "hostbond1"
for tor in tors:
test_fn = partial(check_mac, tor, vni, mac, m_type, esi, intf)
test_fn = partial(check_mac, tor, vni, mac, m_type, esi, intf, True, tgen)
_, result = topotest.run_and_expect(test_fn, None, count=20, wait=3)
assertmsg = '"{}" local MAC content incorrect'.format(tor.name)
assert result is None, assertmsg