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1 | #!/usr/bin/env python3 |
2 | # | |
3 | # Copyright (c) 2022 by VMware, Inc. ("VMware") | |
4 | # Used Copyright (c) 2018 by Network Device Education Foundation, | |
5 | # Inc. ("NetDEF") in this file. | |
6 | # | |
7 | # Permission to use, copy, modify, and/or distribute this software | |
8 | # for any purpose with or without fee is hereby granted, provided | |
9 | # that the above copyright notice and this permission notice appear | |
10 | # in all copies. | |
11 | # | |
12 | # THE SOFTWARE IS PROVIDED "AS IS" AND VMWARE DISCLAIMS ALL WARRANTIES | |
13 | # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
14 | # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VMWARE BE LIABLE FOR | |
15 | # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY | |
16 | # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
17 | # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
18 | # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
19 | # OF THIS SOFTWARE. | |
20 | # | |
21 | # | |
22 | ########################################################################################################################################## | |
23 | # | |
24 | # Testcases | |
25 | # | |
26 | ########################################################################################################################################### | |
27 | ########################################################################################################################################### | |
28 | # | |
29 | # 1.10.1.7. Verify the BGP Local AS functionality with ECMP on 8 links by adding no-prepend and replace-as command in between eBGP Peers. | |
30 | # | |
31 | ################################################################################################################################################# | |
32 | ||
33 | import os | |
34 | import sys | |
35 | import time | |
36 | import pytest | |
37 | import platform | |
38 | ||
39 | # Save the Current Working Directory to find configuration files. | |
40 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
41 | sys.path.append(os.path.join(CWD, "../")) | |
42 | sys.path.append(os.path.join(CWD, "../lib/")) | |
43 | ||
44 | # pylint: disable=C0413 | |
45 | # Import topogen and topotest helpers | |
46 | from lib.topogen import Topogen, get_topogen | |
47 | from lib.topotest import version_cmp | |
48 | ||
49 | from lib.common_config import ( | |
50 | start_topology, | |
51 | write_test_header, | |
52 | create_static_routes, | |
53 | write_test_footer, | |
54 | reset_config_on_routers, | |
55 | verify_rib, | |
56 | step, | |
57 | check_address_types, | |
58 | check_router_status, | |
59 | create_static_routes, | |
60 | verify_fib_routes, | |
61 | ) | |
62 | ||
63 | from lib.topolog import logger | |
64 | from lib.bgp import ( | |
65 | verify_bgp_convergence, | |
66 | verify_bgp_rib, | |
67 | create_router_bgp, | |
68 | ) | |
69 | from lib.topojson import build_config_from_json | |
70 | ||
71 | pytestmark = [pytest.mark.bgpd, pytest.mark.staticd] | |
72 | ||
73 | # Global variables | |
74 | BGP_CONVERGENCE = False | |
75 | NETWORK = {"ipv4": "10.1.1.0/32", "ipv6": "10:1::1:0/128"} | |
76 | NEXT_HOP_IP = {"ipv4": "Null0", "ipv6": "Null0"} | |
77 | ||
78 | ||
79 | def setup_module(mod): | |
80 | """ | |
81 | Sets up the pytest environment | |
82 | ||
83 | * `mod`: module name | |
84 | """ | |
85 | ||
86 | testsuite_run_time = time.asctime(time.localtime(time.time())) | |
87 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
88 | logger.info("=" * 40) | |
89 | ||
90 | logger.info("Running setup_module to create topology") | |
91 | ||
92 | # This function initiates the topology build with Topogen... | |
93 | json_file = "{}/bgp_local_asn_ecmp.json".format(CWD) | |
94 | tgen = Topogen(json_file, mod.__name__) | |
95 | global topo | |
96 | topo = tgen.json_topo | |
97 | # ... and here it calls Mininet initialization functions. | |
98 | ||
99 | # Starting topology, create tmp files which are loaded to routers | |
100 | # to start daemons and then start routers | |
101 | start_topology(tgen) | |
102 | ||
103 | # Creating configuration from JSON | |
104 | build_config_from_json(tgen, topo) | |
105 | ||
106 | global BGP_CONVERGENCE | |
107 | global ADDR_TYPES | |
108 | ADDR_TYPES = check_address_types() | |
109 | ||
110 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
111 | assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error: {}".format( | |
112 | BGP_CONVERGENCE | |
113 | ) | |
114 | ||
115 | logger.info("Running setup_module() done") | |
116 | ||
117 | ||
118 | def teardown_module(): | |
119 | """Teardown the pytest environment""" | |
120 | ||
121 | logger.info("Running teardown_module to delete topology") | |
122 | ||
123 | tgen = get_topogen() | |
124 | ||
125 | # Stop toplogy and Remove tmp files | |
126 | tgen.stop_topology() | |
127 | ||
128 | logger.info( | |
129 | "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) | |
130 | ) | |
131 | logger.info("=" * 40) | |
132 | ||
133 | ||
134 | ########################################################################################################################################## | |
135 | # | |
136 | # Testcases | |
137 | # | |
138 | ########################################################################################################################################### | |
139 | ||
140 | ||
141 | def test_verify_bgp_local_as_in_ecmp_EBGP_p0(request): | |
142 | """ | |
143 | Verify the BGP Local AS functionality with ECMP on 8 links by | |
144 | adding no-prepend and replace-as command in between eBGP Peers. | |
145 | """ | |
146 | ||
147 | tgen = get_topogen() | |
148 | global BGP_CONVERGENCE | |
149 | if BGP_CONVERGENCE != True: | |
150 | pytest.skip("skipped because of BGP Convergence failure") | |
151 | # test case name | |
152 | tc_name = request.node.name | |
153 | write_test_header(tc_name) | |
154 | if tgen.routers_have_failure(): | |
155 | check_router_status(tgen) | |
156 | reset_config_on_routers(tgen) | |
157 | ||
158 | step("Base config is done as part of JSON") | |
159 | dut = "r1" | |
160 | for addr_type in ADDR_TYPES: | |
161 | # Enable static routes | |
162 | input_dict_static_route = { | |
163 | "r1": { | |
164 | "static_routes": [ | |
165 | {"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]} | |
166 | ] | |
167 | } | |
168 | } | |
169 | ||
170 | logger.info("Configure static routes") | |
171 | result = create_static_routes(tgen, input_dict_static_route) | |
172 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
173 | tc_name, result | |
174 | ) | |
175 | ||
176 | step("configure redistribute static in Router BGP in R1") | |
177 | input_dict_static_route_redist = { | |
178 | "r1": { | |
179 | "bgp": [ | |
180 | { | |
181 | "address_family": { | |
182 | addr_type: { | |
183 | "unicast": {"redistribute": [{"redist_type": "static"}]} | |
184 | } | |
185 | } | |
186 | } | |
187 | ] | |
188 | } | |
189 | } | |
190 | result = create_router_bgp(tgen, topo, input_dict_static_route_redist) | |
191 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
192 | tc_name, result | |
193 | ) | |
194 | ||
195 | step("Verify IPv4 and IPv6 static routes received on R1") | |
196 | result = verify_rib(tgen, addr_type, "r1", input_dict_static_route) | |
197 | assert result is True, "Testcase {}: Failed \n Error: {}".format( | |
198 | tc_name, result | |
199 | ) | |
200 | result = verify_bgp_rib(tgen, addr_type, "r1", input_dict_static_route) | |
201 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
202 | tc_name, result | |
203 | ) | |
204 | result = verify_fib_routes(tgen, addr_type, "r1", input_dict_static_route) | |
205 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
206 | tc_name, result | |
207 | ) | |
208 | ||
209 | step("Configure local-as at R3 towards R2.") | |
210 | for addr_type in ADDR_TYPES: | |
211 | input_dict_r3_to_r2 = { | |
212 | "r3": { | |
213 | "bgp": [ | |
214 | { | |
215 | "local_as": "300", | |
216 | "address_family": { | |
217 | addr_type: { | |
218 | "unicast": { | |
219 | "neighbor": { | |
220 | "r2": { | |
221 | "dest_link": { | |
222 | "r3-link1": { | |
223 | "local_asn": {"local_as": "110"} | |
224 | } | |
225 | } | |
226 | } | |
227 | } | |
228 | } | |
229 | } | |
230 | }, | |
231 | } | |
232 | ] | |
233 | } | |
234 | } | |
235 | result = create_router_bgp(tgen, topo, input_dict_r3_to_r2) | |
236 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
237 | tc_name, result | |
238 | ) | |
239 | ||
240 | step("Configure local-as at R3 towards R4.") | |
241 | dest_link = {} | |
242 | for link_no in range(1, 9): | |
243 | link = "r3-link" + str(link_no) | |
244 | dest_link[link] = {"local_asn": {"local_as": "110"}} | |
245 | for addr_type in ADDR_TYPES: | |
246 | input_dict_r3_to_r4 = { | |
247 | "r3": { | |
248 | "bgp": [ | |
249 | { | |
250 | "local_as": "300", | |
251 | "address_family": { | |
252 | addr_type: { | |
253 | "unicast": { | |
254 | "neighbor": {"r4": {"dest_link": dest_link}} | |
255 | } | |
256 | } | |
257 | }, | |
258 | } | |
259 | ] | |
260 | } | |
261 | } | |
262 | result = create_router_bgp(tgen, topo, input_dict_r3_to_r4) | |
263 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
264 | tc_name, result | |
265 | ) | |
266 | ||
267 | step("Configure remote-as at R2 towards R3.") | |
268 | for addr_type in ADDR_TYPES: | |
269 | input_dict_r2_to_r3 = { | |
270 | "r2": { | |
271 | "bgp": [ | |
272 | { | |
273 | "local_as": "200", | |
274 | "address_family": { | |
275 | addr_type: { | |
276 | "unicast": { | |
277 | "neighbor": { | |
278 | "r3": { | |
279 | "dest_link": { | |
280 | "r2-link1": { | |
281 | "local_asn": {"remote_as": "110"} | |
282 | } | |
283 | } | |
284 | } | |
285 | } | |
286 | } | |
287 | } | |
288 | }, | |
289 | } | |
290 | ] | |
291 | } | |
292 | } | |
293 | result = create_router_bgp(tgen, topo, input_dict_r2_to_r3) | |
294 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
295 | tc_name, result | |
296 | ) | |
297 | ||
298 | step("Configure remote-as at R4 towards R3.") | |
299 | dest_link = {} | |
300 | for link_no in range(1, 9): | |
301 | link = "r4-link" + str(link_no) | |
302 | dest_link[link] = {"local_asn": {"remote_as": "110"}} | |
303 | for addr_type in ADDR_TYPES: | |
304 | input_dict_r4_to_r3 = { | |
305 | "r4": { | |
306 | "bgp": [ | |
307 | { | |
308 | "local_as": "400", | |
309 | "address_family": { | |
310 | addr_type: { | |
311 | "unicast": { | |
312 | "neighbor": {"r3": {"dest_link": dest_link}} | |
313 | } | |
314 | } | |
315 | }, | |
316 | } | |
317 | ] | |
318 | } | |
319 | } | |
320 | result = create_router_bgp(tgen, topo, input_dict_r4_to_r3) | |
321 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
322 | tc_name, result | |
323 | ) | |
324 | ||
325 | step("BGP neighborship is verified by following commands in R3 routers") | |
326 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
327 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
328 | BGP_CONVERGENCE | |
329 | ) | |
330 | ||
331 | step("Verify IPv4 and IPv6 static routes received on R3 & R4") | |
332 | for addr_type in ADDR_TYPES: | |
333 | static_routes_input = { | |
334 | "r1": { | |
335 | "static_routes": [ | |
336 | {"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]} | |
337 | ] | |
338 | } | |
339 | } | |
340 | for dut in ["r3", "r4"]: | |
341 | result = verify_fib_routes(tgen, addr_type, dut, static_routes_input) | |
342 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
343 | tc_name, result | |
344 | ) | |
345 | ||
346 | result = verify_bgp_rib(tgen, addr_type, dut, static_routes_input) | |
347 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
348 | tc_name, result | |
349 | ) | |
350 | ||
351 | step( | |
352 | "Verify that AS-110 is got added in the AS list 110 200 100 by following " | |
353 | " commands at R3 router." | |
354 | ) | |
355 | dut = "r3" | |
356 | aspath = "110 200 100" | |
357 | for addr_type in ADDR_TYPES: | |
358 | input_static_r1 = {"r1": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
359 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
360 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
361 | tc_name, result | |
362 | ) | |
363 | ||
364 | step("Configure local-as with no-prepend at R3 towards R2.") | |
365 | for addr_type in ADDR_TYPES: | |
366 | input_dict_no_prep_r3_to_r2 = { | |
367 | "r3": { | |
368 | "bgp": [ | |
369 | { | |
370 | "local_as": "300", | |
371 | "address_family": { | |
372 | addr_type: { | |
373 | "unicast": { | |
374 | "neighbor": { | |
375 | "r2": { | |
376 | "dest_link": { | |
377 | "r3-link1": { | |
378 | "local_asn": { | |
379 | "local_as": "110", | |
380 | "no_prepend": True, | |
381 | } | |
382 | } | |
383 | } | |
384 | } | |
385 | } | |
386 | } | |
387 | } | |
388 | }, | |
389 | } | |
390 | ] | |
391 | } | |
392 | } | |
393 | result = create_router_bgp(tgen, topo, input_dict_no_prep_r3_to_r2) | |
394 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
395 | tc_name, result | |
396 | ) | |
397 | ||
398 | step("Configure local-as with no-prepend at R3 towards R4.") | |
399 | dest_link = {} | |
400 | for link_no in range(1, 9): | |
401 | link = "r3-link" + str(link_no) | |
402 | dest_link[link] = {"local_asn": {"local_as": "110"}} | |
403 | for addr_type in ADDR_TYPES: | |
404 | input_dict_no_prep_r3_to_r4 = { | |
405 | "r3": { | |
406 | "bgp": [ | |
407 | { | |
408 | "local_as": "300", | |
409 | "address_family": { | |
410 | addr_type: { | |
411 | "unicast": { | |
412 | "neighbor": {"r4": {"dest_link": dest_link}} | |
413 | } | |
414 | } | |
415 | }, | |
416 | } | |
417 | ] | |
418 | } | |
419 | } | |
420 | result = create_router_bgp(tgen, topo, input_dict_no_prep_r3_to_r4) | |
421 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
422 | tc_name, result | |
423 | ) | |
424 | ||
425 | step("BGP neighborship is verified by following commands in R3 routers") | |
426 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
427 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
428 | BGP_CONVERGENCE | |
429 | ) | |
430 | ||
431 | dut = "r3" | |
432 | aspath = "200 100" | |
433 | for addr_type in ADDR_TYPES: | |
434 | input_static_r1 = {"r2": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
435 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
436 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
437 | tc_name, result | |
438 | ) | |
439 | ||
440 | step("Configure local-as with no-prepend and replace-as at R3 towards R2") | |
441 | for addr_type in ADDR_TYPES: | |
442 | input_dict_no_prep_rep_as_r3_to_r2 = { | |
443 | "r3": { | |
444 | "bgp": [ | |
445 | { | |
446 | "local_as": "300", | |
447 | "address_family": { | |
448 | addr_type: { | |
449 | "unicast": { | |
450 | "neighbor": { | |
451 | "r2": { | |
452 | "dest_link": { | |
453 | "r3-link1": { | |
454 | "local_asn": { | |
455 | "local_as": "110", | |
456 | "no_prepend": True, | |
457 | "replace_as": True, | |
458 | } | |
459 | } | |
460 | } | |
461 | } | |
462 | } | |
463 | } | |
464 | } | |
465 | }, | |
466 | } | |
467 | ] | |
468 | } | |
469 | } | |
470 | result = create_router_bgp(tgen, topo, input_dict_no_prep_rep_as_r3_to_r2) | |
471 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
472 | tc_name, result | |
473 | ) | |
474 | ||
475 | step("Configure local-as with no-prepend and replace-as at R3 towards R4") | |
476 | dest_link = {} | |
477 | for link_no in range(1, 9): | |
478 | link = "r3-link" + str(link_no) | |
479 | dest_link[link] = { | |
480 | "local_asn": {"local_as": "110", "no_prepend": True, "replace_as": True} | |
481 | } | |
482 | for addr_type in ADDR_TYPES: | |
483 | input_dict_no_prep_rep_as_r3_to_r4 = { | |
484 | "r3": { | |
485 | "bgp": [ | |
486 | { | |
487 | "local_as": "300", | |
488 | "address_family": { | |
489 | addr_type: { | |
490 | "unicast": { | |
491 | "neighbor": {"r4": {"dest_link": dest_link}} | |
492 | } | |
493 | } | |
494 | }, | |
495 | } | |
496 | ] | |
497 | } | |
498 | } | |
499 | result = create_router_bgp(tgen, topo, input_dict_no_prep_rep_as_r3_to_r4) | |
500 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
501 | tc_name, result | |
502 | ) | |
503 | ||
504 | step("BGP neighborship is verified by following commands in R3 routers") | |
505 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
506 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
507 | BGP_CONVERGENCE | |
508 | ) | |
509 | ||
510 | dut = "r4" | |
511 | aspath = "110 200 100" | |
512 | for addr_type in ADDR_TYPES: | |
513 | input_static_r1 = {"r1": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
514 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
515 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
516 | tc_name, result | |
517 | ) | |
518 | ||
519 | write_test_footer(tc_name) | |
520 | ||
521 | ||
522 | if __name__ == "__main__": | |
523 | args = ["-s"] + sys.argv[1:] | |
524 | sys.exit(pytest.main(args)) |