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tests: Add bgp_communities_topo1 test suite

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1. Adding test to verify well known communities: no-export, local-AS, internet
2. Exection time is 90 sec

Signed-off-by: Kuldeep Kashyap <kashyapk@vmware.com>
This commit is contained in:
Kuldeep Kashyap 2020-09-25 09:55:08 +00:00
parent cefa7492f5
commit 1cba703357
2 changed files with 613 additions and 0 deletions
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191
tests/topotests/bgp_communities_topo1/bgp_communities_topo2.json Normal file
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{
"address_types": [
"ipv4",
"ipv6"
],
"ipv4base": "10.0.0.0",
"ipv4mask": 24,
"ipv6base": "fd00::",
"ipv6mask": 64,
"link_ip_start": {
"ipv4": "10.0.0.0",
"v4mask": 24,
"ipv6": "fd00::",
"v6mask": 64
},
"lo_prefix": {
"ipv4": "1.0.",
"v4mask": 32,
"ipv6": "2001:db8:f::",
"v6mask": 128
},
"routers": {
"r1": {
"links": {
"lo": {
"ipv4": "auto",
"ipv6": "auto",
"type": "loopback"
},
"r2": {
"ipv4": "auto",
"ipv6": "auto"
},
"r3": {
"ipv4": "auto",
"ipv6": "auto"
}
},
"bgp": {
"local_as": "100",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1": {}
}
},
"r3": {
"dest_link": {
"r1": {
}
}
}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r2": {
"dest_link": {
"r1": {
}
}
},
"r3": {
"dest_link": {
"r1": {
}
}
}
}
}
}
}
}
},
"r2": {
"links": {
"lo": {
"ipv4": "auto",
"ipv6": "auto",
"type": "loopback"
},
"r1": {
"ipv4": "auto",
"ipv6": "auto"
}
},
"bgp": {
"local_as": "100",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2": {}
}
}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r2": {
"route_maps": [{
"name": "rmap_global",
"direction": "in"
}]
}
}
}
}
}
}
}
},
"route_maps": {
"rmap_global": [{
"action": "permit",
"set": {
"ipv6": {
"nexthop": "prefer-global"
}
}
}]
}
},
"r3": {
"links": {
"lo": {
"ipv4": "auto",
"ipv6": "auto",
"type": "loopback"
},
"r1": {
"ipv4": "auto",
"ipv6": "auto"
}
},
"bgp": {
"local_as": "300",
"address_family": {
"ipv4": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r3": {}
}
}
}
}
},
"ipv6": {
"unicast": {
"neighbor": {
"r1": {
"dest_link": {
"r3": {
"route_maps": [{
"name": "rmap_global",
"direction": "in"
}]
}
}
}
}
}
}
}
},
"route_maps": {
"rmap_global": [{
"action": "permit",
"set": {
"ipv6": {
"nexthop": "prefer-global"
}
}
}]
}
}
}
}

422
tests/topotests/bgp_communities_topo1/test_bgp_communities_topo2.py Normal file
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#!/usr/bin/python
#
# Copyright (c) 2020 by VMware, Inc. ("VMware")
# Used Copyright (c) 2018 by Network Device Education Foundation,
# Inc. ("NetDEF") in this file.
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
Following tests are covered to test bgp community functionality:
1. Verify that BGP well known communities work fine for
eBGP and iBGP peers.
Well known communities tested: no-export, local-AS, internet
"""
import os
import sys
import time
import json
import pytest
# Save the Current Working Directory to find configuration files.
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from mininet.topo import Topo
from lib.topogen import Topogen, get_topogen
# Import topoJson from lib, to create topology and initial configuration
from lib.common_config import (
start_topology,
write_test_header,
write_test_footer,
reset_config_on_routers,
verify_rib,
create_static_routes,
check_address_types,
step,
create_route_maps,
create_prefix_lists,
create_route_maps,
required_linux_kernel_version,
)
from lib.topolog import logger
from lib.bgp import (
verify_bgp_convergence,
create_router_bgp,
clear_bgp_and_verify,
verify_bgp_rib,
verify_bgp_community,
)
from lib.topojson import build_topo_from_json, build_config_from_json
from copy import deepcopy
# Reading the data from JSON File for topology creation
jsonFile = "{}/bgp_communities_topo2.json".format(CWD)
try:
with open(jsonFile, "r") as topoJson:
topo = json.load(topoJson)
except IOError:
assert False, "Could not read file {}".format(jsonFile)
# Global variables
BGP_CONVERGENCE = False
ADDR_TYPES = check_address_types()
NETWORK = {
"ipv4": ["192.0.2.1/32", "192.0.2.2/32"],
"ipv6": ["2001:DB8::1:1/128", "2001:DB8::1:2/128"],
}
class BGPCOMMUNITIES(Topo):
"""
Test BGPCOMMUNITIES - topology 1
* `Topo`: Topology object
"""
def build(self, *_args, **_opts):
"""Build function"""
tgen = get_topogen(self)
# Building topology from json file
build_topo_from_json(tgen, topo)
def setup_module(mod):
"""
Sets up the pytest environment
* `mod`: module name
"""
# Required linux kernel version for this suite to run.
result = required_linux_kernel_version("4.14")
if result is not True:
pytest.skip("Kernel requirements are not met")
testsuite_run_time = time.asctime(time.localtime(time.time()))
logger.info("Testsuite start time: {}".format(testsuite_run_time))
logger.info("=" * 40)
logger.info("Running setup_module to create topology")
# This function initiates the topology build with Topogen...
tgen = Topogen(BGPCOMMUNITIES, mod.__name__)
# ... and here it calls Mininet initialization functions.
# Starting topology, create tmp files which are loaded to routers
# to start deamons and then start routers
start_topology(tgen)
# Creating configuration from JSON
build_config_from_json(tgen, topo)
# Checking BGP convergence
global BGP_CONVERGENCE
global ADDR_TYPES
# Don't run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
# Api call verify whether BGP is converged
BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo)
assert BGP_CONVERGENCE is True, "setup_module :Failed \n Error:" " {}".format(
BGP_CONVERGENCE
)
logger.info("Running setup_module() done")
def teardown_module(mod):
"""
Teardown the pytest environment
* `mod`: module name
"""
logger.info("Running teardown_module to delete topology")
tgen = get_topogen()
# Stop toplogy and Remove tmp files
tgen.stop_topology()
logger.info(
"Testsuite end time: {}".format(time.asctime(time.localtime(time.time())))
)
logger.info("=" * 40)
#####################################################
#
# Tests starting
#
#####################################################
def test_bgp_no_export_local_as_and_internet_communities_p0(request):
"""
Verify that BGP well known communities work fine for
eBGP and iBGP peers.
Well known communities tested: no-export, local-AS, internet
"""
tc_name = request.node.name
write_test_header(tc_name)
tgen = get_topogen()
# Don"t run this test if we have any failure.
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
step("Initial config: Configure BGP neighborship between R1 and R3.")
reset_config_on_routers(tgen)
step("Configure static routes on R1 with next-hop as null0")
for addr_type in ADDR_TYPES:
input_dict_4 = {
"r1": {
"static_routes": [{"network": NETWORK[addr_type], "next_hop": "null0"}]
}
}
result = create_static_routes(tgen, input_dict_4)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
for comm_type in ["no-export", "local-AS", "internet"]:
step("Create a route-map on R1 to set community as {}".format(comm_type))
seq_id = 10
input_rmap = {
"r1": {
"route_maps": {
"rmap_wkc": [
{
"action": "permit",
"seq_id": seq_id,
"set": {"community": {"num": "{}".format(comm_type)}},
}
]
}
}
}
result = create_route_maps(tgen, input_rmap)
assert result is True, "Testcase {} : Failed \n Error: {}".format(
tc_name, result
)
step("Apply route-map while redistributing static routes into BGP")
input_dict_2 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [
{
"redist_type": "static",
"attribute": {"route-map": "rmap_wkc"},
}
]
}
},
"ipv6": {
"unicast": {
"redistribute": [
{
"redist_type": "static",
"attribute": {"route-map": "rmap_wkc"},
}
]
}
},
}
}
}
}
result = create_router_bgp(tgen, topo, input_dict_2)
step("Verify that BGP prefixes on R1 have community: {}".format(comm_type))
input_dict_4 = {"community": "{}".format(comm_type)}
for addr_type in ADDR_TYPES:
result = verify_bgp_community(
tgen, addr_type, "r1", NETWORK[addr_type], input_dict_4
)
assert result is True, "Test case {} : Should fail \n Error: {}".format(
tc_name, result
)
for addr_type in ADDR_TYPES:
input_dict_4 = {
"r1": {
"static_routes": [
{
"network": NETWORK[addr_type],
"next_hop": topo["routers"]["r2"]["links"]["r1"][
addr_type
].split("/")[0],
}
]
}
}
result = verify_bgp_rib(
tgen,
addr_type,
"r2",
input_dict_4,
next_hop=topo["routers"]["r1"]["links"]["r2"][addr_type].split("/")[0],
)
assert result is True, "Testcase : Failed \n Error: {}".format(
tc_name, result
)
if comm_type == "internet":
step(
"Verify that these prefixes, originated on R1, are"
"received on both R2 and R3"
)
result = verify_rib(
tgen,
addr_type,
"r3",
input_dict_4,
next_hop=topo["routers"]["r1"]["links"]["r3"][addr_type].split("/")[
0
],
)
assert result is True, "Testcase : Failed \n Error: {}".format(
tc_name, result
)
else:
step(
"Verify that these prefixes, originated on R1, are not"
"received on R3 but received on R2"
)
result = verify_rib(
tgen,
addr_type,
"r3",
input_dict_4,
next_hop=topo["routers"]["r1"]["links"]["r3"][addr_type].split("/")[
0
],
expected=False,
)
assert result is not True, "Testcase : Failed \n Error: {}".format(
tc_name, result
)
step("Remove route-map from redistribute static on R1")
input_dict_2 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {
"redistribute": [
{"redist_type": "static", "delete": True}
]
}
},
"ipv6": {
"unicast": {
"redistribute": [
{"redist_type": "static", "delete": True}
]
}
},
}
}
}
}
result = create_router_bgp(tgen, topo, input_dict_2)
assert result is True, "Testcase : Failed \n Error: {}".format(tc_name, result)
step("Configure redistribute static")
input_dict_2 = {
"r1": {
"bgp": {
"address_family": {
"ipv4": {
"unicast": {"redistribute": [{"redist_type": "static"}]}
},
"ipv6": {
"unicast": {"redistribute": [{"redist_type": "static"}]}
},
}
}
}
}
result = create_router_bgp(tgen, topo, input_dict_2)
assert result is True, "Testcase : Failed \n Error: {}".format(tc_name, result)
step(
"Verify that these prefixes, originated on R1, are now"
"received on both routers R2 and R3"
)
for addr_type in ADDR_TYPES:
input_dict_4 = {
"r1": {
"static_routes": [
{
"network": NETWORK[addr_type],
"next_hop": topo["routers"]["r2"]["links"]["r1"][
addr_type
].split("/")[0],
}
]
}
}
result = verify_bgp_rib(
tgen,
addr_type,
"r2",
input_dict_4,
next_hop=topo["routers"]["r1"]["links"]["r2"][addr_type].split("/")[0],
)
assert result is True, "Testcase : Failed \n Error: {}".format(
tc_name, result
)
result = verify_bgp_rib(
tgen,
addr_type,
"r3",
input_dict_4,
next_hop=topo["routers"]["r1"]["links"]["r3"][addr_type].split("/")[0],
)
assert result is True, "Testcase : Failed \n Error: {}".format(
tc_name, result
)
write_test_footer(tc_name)
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))