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4256a209 | 1 | #!/usr/bin/python |
2 | ||
3 | # | |
4 | # Copyright (c) 2020 by VMware, Inc. ("VMware") | |
5 | # Used Copyright (c) 2018 by Network Device Education Foundation, Inc. | |
6 | # ("NetDEF") in this file. | |
7 | # | |
8 | # Permission to use, copy, modify, and/or distribute this software | |
9 | # for any purpose with or without fee is hereby granted, provided | |
10 | # that the above copyright notice and this permission notice appear | |
11 | # in all copies. | |
12 | # | |
13 | # THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES | |
14 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
15 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR | |
16 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY | |
17 | # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
18 | # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
19 | # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | # OF THIS SOFTWARE. | |
21 | # | |
22 | ||
23 | ||
24 | """OSPF Basic Functionality Automation.""" | |
25 | import os | |
26 | import sys | |
27 | import time | |
28 | import pytest | |
4256a209 | 29 | |
30 | # Save the Current Working Directory to find configuration files. | |
31 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
32 | sys.path.append(os.path.join(CWD, "../")) | |
33 | sys.path.append(os.path.join(CWD, "../lib/")) | |
34 | ||
35 | # pylint: disable=C0413 | |
36 | # Import topogen and topotest helpers | |
4256a209 | 37 | from lib.topogen import Topogen, get_topogen |
38 | ||
39 | # Import topoJson from lib, to create topology and initial configuration | |
40 | from lib.common_config import ( | |
41 | start_topology, | |
42 | write_test_header, | |
4256a209 | 43 | write_test_footer, |
44 | reset_config_on_routers, | |
45 | verify_rib, | |
46 | create_static_routes, | |
4256a209 | 47 | step, |
4256a209 | 48 | ) |
4256a209 | 49 | from lib.topolog import logger |
4953ca97 | 50 | from lib.topojson import build_config_from_json |
4256a209 | 51 | |
52 | from lib.ospf import ( | |
53 | verify_ospf_neighbor, | |
4256a209 | 54 | clear_ospf, |
55 | verify_ospf_rib, | |
88b7d3e7 | 56 | redistribute_ospf, |
4256a209 | 57 | ) |
4256a209 | 58 | |
6ff492b1 DS |
59 | pytestmark = [pytest.mark.ospfd, pytest.mark.staticd] |
60 | ||
61 | ||
4256a209 | 62 | # Global variables |
63 | topo = None | |
64 | # Reading the data from JSON File for topology creation | |
4256a209 | 65 | NETWORK = { |
66 | "ipv4": [ | |
67 | "11.0.20.1/32", | |
68 | "11.0.20.2/32", | |
69 | "11.0.20.3/32", | |
70 | "11.0.20.4/32", | |
71 | "11.0.20.5/32", | |
72 | ], | |
73 | "ipv6": ["1::1/128", "1::2/128", "1::3/128", "1::4/128", "1::5/128"], | |
74 | } | |
75 | MASK = {"ipv4": "32", "ipv6": "128"} | |
76 | NEXT_HOP = { | |
77 | "ipv4": ["10.0.0.1", "10.0.1.1", "10.0.2.1", "10.0.3.1", "10.0.4.1"], | |
78 | "ipv6": ["Null0", "Null0", "Null0", "Null0", "Null0"], | |
79 | } | |
80 | """ | |
81 | TOPOOLOGY = | |
82 | Please view in a fixed-width font such as Courier. | |
83 | Topo : Broadcast Networks | |
84 | +---+ +---+ +---+ +---+ | |
85 | |R0 + +R1 + +R2 + +R3 | | |
86 | +-+-+ +-+-+ +-+-+ +-+-+ | |
87 | | | | | | |
88 | | | | | | |
89 | --+-----------+--------------+---------------+----- | |
90 | Ethernet Segment | |
91 | ||
92 | TESTCASES = | |
93 | 1. Verify OSPF ECMP with max path configured as 8 | |
94 | (Edge having 1 uplink port as broadcast network, | |
95 | connect to 8 TORs - LAN case) | |
96 | ||
97 | """ | |
98 | ||
99 | ||
4256a209 | 100 | def setup_module(mod): |
101 | """ | |
102 | Sets up the pytest environment | |
103 | ||
104 | * `mod`: module name | |
105 | """ | |
4256a209 | 106 | testsuite_run_time = time.asctime(time.localtime(time.time())) |
107 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
108 | logger.info("=" * 40) | |
109 | ||
110 | logger.info("Running setup_module to create topology") | |
111 | ||
112 | # This function initiates the topology build with Topogen... | |
e82b531d CH |
113 | json_file = "{}/ospf_ecmp_lan.json".format(CWD) |
114 | tgen = Topogen(json_file, mod.__name__) | |
115 | global topo | |
116 | topo = tgen.json_topo | |
4256a209 | 117 | # ... and here it calls Mininet initialization functions. |
118 | ||
119 | # Starting topology, create tmp files which are loaded to routers | |
d60a3f0e | 120 | # to start daemons and then start routers |
991a971f | 121 | start_topology(tgen) |
035267a3 | 122 | |
4256a209 | 123 | # Creating configuration from JSON |
124 | build_config_from_json(tgen, topo) | |
125 | ||
126 | # Don't run this test if we have any failure. | |
127 | if tgen.routers_have_failure(): | |
128 | pytest.skip(tgen.errors) | |
129 | # Api call verify whether OSPF is converged | |
130 | ospf_covergence = verify_ospf_neighbor(tgen, topo, lan=True) | |
131 | assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( | |
132 | ospf_covergence | |
133 | ) | |
134 | ||
135 | logger.info("Running setup_module() done") | |
136 | ||
137 | ||
138 | def teardown_module(): | |
139 | """Teardown the pytest environment""" | |
140 | ||
141 | logger.info("Running teardown_module to delete topology") | |
142 | ||
143 | tgen = get_topogen() | |
144 | ||
145 | try: | |
146 | # Stop toplogy and Remove tmp files | |
147 | tgen.stop_topology() | |
148 | ||
149 | except OSError: | |
150 | # OSError exception is raised when mininet tries to stop switch | |
151 | # though switch is stopped once but mininet tries to stop same | |
152 | # switch again, where it ended up with exception | |
153 | pass | |
154 | ||
155 | ||
4256a209 | 156 | # ################################## |
157 | # Test cases start here. | |
158 | # ################################## | |
159 | ||
160 | ||
161 | def test_ospf_lan_ecmp_tc18_p0(request): | |
162 | """ | |
163 | OSPF ECMP. | |
164 | ||
165 | Verify OSPF ECMP with max path configured as 8 | |
166 | (Edge having 1 uplink port as broadcast network, | |
167 | connect to 8 TORs - LAN case) | |
168 | ||
169 | """ | |
170 | tc_name = request.node.name | |
171 | write_test_header(tc_name) | |
172 | tgen = get_topogen() | |
173 | ||
174 | # Don't run this test if we have any failure. | |
175 | if tgen.routers_have_failure(): | |
176 | pytest.skip(tgen.errors) | |
177 | ||
178 | global topo | |
179 | step("Bring up the base config as per the topology") | |
180 | step(". Configure ospf in all the routers on LAN interface.") | |
181 | reset_config_on_routers(tgen) | |
182 | step("Verify that OSPF is up with 8 neighborship sessions.") | |
183 | ||
184 | ospf_covergence = verify_ospf_neighbor(tgen, topo, lan=True) | |
185 | assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( | |
186 | ospf_covergence | |
187 | ) | |
188 | ||
189 | step( | |
190 | "Configure a static route in all the routes and " | |
191 | "redistribute static/connected in OSPF." | |
192 | ) | |
193 | ||
194 | for rtr in topo["routers"]: | |
195 | input_dict = { | |
196 | rtr: { | |
197 | "static_routes": [ | |
198 | {"network": NETWORK["ipv4"][0], "no_of_ip": 5, "next_hop": "Null0"} | |
199 | ] | |
200 | } | |
201 | } | |
202 | result = create_static_routes(tgen, input_dict) | |
203 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
204 | tc_name, result | |
205 | ) | |
206 | ||
207 | dut = rtr | |
88b7d3e7 | 208 | redistribute_ospf(tgen, topo, dut, "static") |
4256a209 | 209 | |
210 | step( | |
211 | "Verify that route in R0 in stalled with 8 hops. " | |
212 | "Verify ospf route table and ip route table." | |
213 | ) | |
214 | ||
215 | nh = [] | |
216 | for rtr in topo["routers"]: | |
217 | nh.append(topo["routers"][rtr]["links"]["s1"]["ipv4"].split("/")[0]) | |
218 | nh.remove(topo["routers"]["r1"]["links"]["s1"]["ipv4"].split("/")[0]) | |
219 | dut = "r1" | |
220 | result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh) | |
221 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
222 | ||
223 | protocol = "ospf" | |
224 | result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh) | |
225 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
226 | ||
227 | step(" clear ip ospf interface on DUT(r0)") | |
228 | clear_ospf(tgen, "r0") | |
229 | ||
230 | step( | |
231 | "Verify that after clearing the ospf interface all the " | |
232 | "neighbours are up and routes are installed with 8 next hop " | |
233 | "in ospf and ip route tables on R0" | |
234 | ) | |
235 | ||
236 | dut = "r0" | |
237 | ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut, lan=True) | |
238 | assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( | |
239 | ospf_covergence | |
240 | ) | |
241 | ||
242 | step(" clear ip ospf interface on R2") | |
243 | clear_ospf(tgen, "r2") | |
244 | ||
245 | dut = "r2" | |
246 | ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut, lan=True) | |
247 | assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format( | |
248 | ospf_covergence | |
249 | ) | |
250 | ||
251 | step("Delete static/connected cmd in ospf in all the routes one by one.") | |
252 | for rtr in topo["routers"]: | |
253 | input_dict = { | |
254 | rtr: { | |
255 | "static_routes": [ | |
256 | { | |
257 | "network": NETWORK["ipv4"][0], | |
258 | "no_of_ip": 5, | |
259 | "next_hop": "Null0", | |
260 | "delete": True, | |
261 | } | |
262 | ] | |
263 | } | |
264 | } | |
265 | result = create_static_routes(tgen, input_dict) | |
266 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
267 | tc_name, result | |
268 | ) | |
269 | ||
270 | step("Verify that all the routes are withdrawn from R0") | |
271 | dut = "r1" | |
a81774ec | 272 | result = verify_ospf_rib( |
ed776e38 | 273 | tgen, dut, input_dict, next_hop=nh, retry_timeout=10, expected=False |
a81774ec | 274 | ) |
0b25370e DS |
275 | assert ( |
276 | result is not True | |
277 | ), "Testcase {} : Failed \n " "r1: OSPF routes are present \n Error: {}".format( | |
4256a209 | 278 | tc_name, result |
0b25370e | 279 | ) |
4256a209 | 280 | |
281 | protocol = "ospf" | |
a81774ec | 282 | result = verify_rib( |
283 | tgen, | |
284 | "ipv4", | |
285 | dut, | |
286 | input_dict, | |
287 | protocol=protocol, | |
288 | next_hop=nh, | |
ed776e38 | 289 | retry_timeout=10, |
a81774ec | 290 | expected=False, |
291 | ) | |
0b25370e DS |
292 | assert ( |
293 | result is not True | |
294 | ), "Testcase {} : Failed \n " "r1: routes are still present \n Error: {}".format( | |
4256a209 | 295 | tc_name, result |
0b25370e | 296 | ) |
4256a209 | 297 | |
298 | write_test_footer(tc_name) | |
299 | ||
300 | ||
301 | if __name__ == "__main__": | |
302 | args = ["-s"] + sys.argv[1:] | |
303 | sys.exit(pytest.main(args)) |