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a65b1a75 | 1 | #!/usr/bin/env python3 |
acddc0ed | 2 | # SPDX-License-Identifier: ISC |
a65b1a75 KK |
3 | # |
4 | # Copyright (c) 2022 by VMware, Inc. ("VMware") | |
5 | # Used Copyright (c) 2018 by Network Device Education Foundation, | |
6 | # Inc. ("NetDEF") in this file. | |
7 | # | |
a65b1a75 KK |
8 | # |
9 | ########################################################################################################################################## | |
10 | # | |
11 | # Testcases | |
12 | # | |
13 | ########################################################################################################################################### | |
14 | ########################################################################################################################################### | |
15 | # | |
16 | # 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. | |
17 | # | |
18 | ################################################################################################################################################# | |
19 | ||
20 | import os | |
21 | import sys | |
22 | import time | |
23 | import pytest | |
24 | import platform | |
25 | ||
26 | # Save the Current Working Directory to find configuration files. | |
27 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
28 | sys.path.append(os.path.join(CWD, "../")) | |
29 | sys.path.append(os.path.join(CWD, "../lib/")) | |
30 | ||
31 | # pylint: disable=C0413 | |
32 | # Import topogen and topotest helpers | |
33 | from lib.topogen import Topogen, get_topogen | |
34 | from lib.topotest import version_cmp | |
35 | ||
36 | from lib.common_config import ( | |
37 | start_topology, | |
38 | write_test_header, | |
39 | create_static_routes, | |
40 | write_test_footer, | |
41 | reset_config_on_routers, | |
42 | verify_rib, | |
43 | step, | |
44 | check_address_types, | |
45 | check_router_status, | |
46 | create_static_routes, | |
47 | verify_fib_routes, | |
48 | ) | |
49 | ||
50 | from lib.topolog import logger | |
51 | from lib.bgp import ( | |
52 | verify_bgp_convergence, | |
53 | verify_bgp_rib, | |
54 | create_router_bgp, | |
55 | ) | |
56 | from lib.topojson import build_config_from_json | |
57 | ||
58 | pytestmark = [pytest.mark.bgpd, pytest.mark.staticd] | |
59 | ||
60 | # Global variables | |
61 | BGP_CONVERGENCE = False | |
62 | NETWORK = {"ipv4": "10.1.1.0/32", "ipv6": "10:1::1:0/128"} | |
63 | NEXT_HOP_IP = {"ipv4": "Null0", "ipv6": "Null0"} | |
64 | ||
65 | ||
66 | def setup_module(mod): | |
67 | """ | |
68 | Sets up the pytest environment | |
69 | ||
70 | * `mod`: module name | |
71 | """ | |
72 | ||
73 | testsuite_run_time = time.asctime(time.localtime(time.time())) | |
74 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
75 | logger.info("=" * 40) | |
76 | ||
77 | logger.info("Running setup_module to create topology") | |
78 | ||
79 | # This function initiates the topology build with Topogen... | |
80 | json_file = "{}/bgp_local_asn_ecmp.json".format(CWD) | |
81 | tgen = Topogen(json_file, mod.__name__) | |
82 | global topo | |
83 | topo = tgen.json_topo | |
84 | # ... and here it calls Mininet initialization functions. | |
85 | ||
86 | # Starting topology, create tmp files which are loaded to routers | |
87 | # to start daemons and then start routers | |
88 | start_topology(tgen) | |
89 | ||
90 | # Creating configuration from JSON | |
91 | build_config_from_json(tgen, topo) | |
92 | ||
93 | global BGP_CONVERGENCE | |
94 | global ADDR_TYPES | |
95 | ADDR_TYPES = check_address_types() | |
96 | ||
97 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
98 | assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error: {}".format( | |
99 | BGP_CONVERGENCE | |
100 | ) | |
101 | ||
102 | logger.info("Running setup_module() done") | |
103 | ||
104 | ||
105 | def teardown_module(): | |
106 | """Teardown the pytest environment""" | |
107 | ||
108 | logger.info("Running teardown_module to delete topology") | |
109 | ||
110 | tgen = get_topogen() | |
111 | ||
112 | # Stop toplogy and Remove tmp files | |
113 | tgen.stop_topology() | |
114 | ||
115 | logger.info( | |
116 | "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) | |
117 | ) | |
118 | logger.info("=" * 40) | |
119 | ||
120 | ||
121 | ########################################################################################################################################## | |
122 | # | |
123 | # Testcases | |
124 | # | |
125 | ########################################################################################################################################### | |
126 | ||
127 | ||
128 | def test_verify_bgp_local_as_in_ecmp_EBGP_p0(request): | |
129 | """ | |
130 | Verify the BGP Local AS functionality with ECMP on 8 links by | |
131 | adding no-prepend and replace-as command in between eBGP Peers. | |
132 | """ | |
133 | ||
134 | tgen = get_topogen() | |
135 | global BGP_CONVERGENCE | |
136 | if BGP_CONVERGENCE != True: | |
137 | pytest.skip("skipped because of BGP Convergence failure") | |
138 | # test case name | |
139 | tc_name = request.node.name | |
140 | write_test_header(tc_name) | |
141 | if tgen.routers_have_failure(): | |
142 | check_router_status(tgen) | |
143 | reset_config_on_routers(tgen) | |
144 | ||
145 | step("Base config is done as part of JSON") | |
146 | dut = "r1" | |
147 | for addr_type in ADDR_TYPES: | |
148 | # Enable static routes | |
149 | input_dict_static_route = { | |
150 | "r1": { | |
151 | "static_routes": [ | |
152 | {"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]} | |
153 | ] | |
154 | } | |
155 | } | |
156 | ||
157 | logger.info("Configure static routes") | |
158 | result = create_static_routes(tgen, input_dict_static_route) | |
159 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
160 | tc_name, result | |
161 | ) | |
162 | ||
163 | step("configure redistribute static in Router BGP in R1") | |
164 | input_dict_static_route_redist = { | |
165 | "r1": { | |
166 | "bgp": [ | |
167 | { | |
168 | "address_family": { | |
169 | addr_type: { | |
170 | "unicast": {"redistribute": [{"redist_type": "static"}]} | |
171 | } | |
172 | } | |
173 | } | |
174 | ] | |
175 | } | |
176 | } | |
177 | result = create_router_bgp(tgen, topo, input_dict_static_route_redist) | |
178 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
179 | tc_name, result | |
180 | ) | |
181 | ||
182 | step("Verify IPv4 and IPv6 static routes received on R1") | |
183 | result = verify_rib(tgen, addr_type, "r1", input_dict_static_route) | |
184 | assert result is True, "Testcase {}: Failed \n Error: {}".format( | |
185 | tc_name, result | |
186 | ) | |
187 | result = verify_bgp_rib(tgen, addr_type, "r1", input_dict_static_route) | |
188 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
189 | tc_name, result | |
190 | ) | |
191 | result = verify_fib_routes(tgen, addr_type, "r1", input_dict_static_route) | |
192 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
193 | tc_name, result | |
194 | ) | |
195 | ||
196 | step("Configure local-as at R3 towards R2.") | |
197 | for addr_type in ADDR_TYPES: | |
198 | input_dict_r3_to_r2 = { | |
199 | "r3": { | |
200 | "bgp": [ | |
201 | { | |
202 | "local_as": "300", | |
203 | "address_family": { | |
204 | addr_type: { | |
205 | "unicast": { | |
206 | "neighbor": { | |
207 | "r2": { | |
208 | "dest_link": { | |
209 | "r3-link1": { | |
210 | "local_asn": {"local_as": "110"} | |
211 | } | |
212 | } | |
213 | } | |
214 | } | |
215 | } | |
216 | } | |
217 | }, | |
218 | } | |
219 | ] | |
220 | } | |
221 | } | |
222 | result = create_router_bgp(tgen, topo, input_dict_r3_to_r2) | |
223 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
224 | tc_name, result | |
225 | ) | |
226 | ||
227 | step("Configure local-as at R3 towards R4.") | |
228 | dest_link = {} | |
229 | for link_no in range(1, 9): | |
230 | link = "r3-link" + str(link_no) | |
231 | dest_link[link] = {"local_asn": {"local_as": "110"}} | |
232 | for addr_type in ADDR_TYPES: | |
233 | input_dict_r3_to_r4 = { | |
234 | "r3": { | |
235 | "bgp": [ | |
236 | { | |
237 | "local_as": "300", | |
238 | "address_family": { | |
239 | addr_type: { | |
240 | "unicast": { | |
241 | "neighbor": {"r4": {"dest_link": dest_link}} | |
242 | } | |
243 | } | |
244 | }, | |
245 | } | |
246 | ] | |
247 | } | |
248 | } | |
249 | result = create_router_bgp(tgen, topo, input_dict_r3_to_r4) | |
250 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
251 | tc_name, result | |
252 | ) | |
253 | ||
254 | step("Configure remote-as at R2 towards R3.") | |
255 | for addr_type in ADDR_TYPES: | |
256 | input_dict_r2_to_r3 = { | |
257 | "r2": { | |
258 | "bgp": [ | |
259 | { | |
260 | "local_as": "200", | |
261 | "address_family": { | |
262 | addr_type: { | |
263 | "unicast": { | |
264 | "neighbor": { | |
265 | "r3": { | |
266 | "dest_link": { | |
267 | "r2-link1": { | |
268 | "local_asn": {"remote_as": "110"} | |
269 | } | |
270 | } | |
271 | } | |
272 | } | |
273 | } | |
274 | } | |
275 | }, | |
276 | } | |
277 | ] | |
278 | } | |
279 | } | |
280 | result = create_router_bgp(tgen, topo, input_dict_r2_to_r3) | |
281 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
282 | tc_name, result | |
283 | ) | |
284 | ||
285 | step("Configure remote-as at R4 towards R3.") | |
286 | dest_link = {} | |
287 | for link_no in range(1, 9): | |
288 | link = "r4-link" + str(link_no) | |
289 | dest_link[link] = {"local_asn": {"remote_as": "110"}} | |
290 | for addr_type in ADDR_TYPES: | |
291 | input_dict_r4_to_r3 = { | |
292 | "r4": { | |
293 | "bgp": [ | |
294 | { | |
295 | "local_as": "400", | |
296 | "address_family": { | |
297 | addr_type: { | |
298 | "unicast": { | |
299 | "neighbor": {"r3": {"dest_link": dest_link}} | |
300 | } | |
301 | } | |
302 | }, | |
303 | } | |
304 | ] | |
305 | } | |
306 | } | |
307 | result = create_router_bgp(tgen, topo, input_dict_r4_to_r3) | |
308 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
309 | tc_name, result | |
310 | ) | |
311 | ||
312 | step("BGP neighborship is verified by following commands in R3 routers") | |
313 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
314 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
315 | BGP_CONVERGENCE | |
316 | ) | |
317 | ||
318 | step("Verify IPv4 and IPv6 static routes received on R3 & R4") | |
319 | for addr_type in ADDR_TYPES: | |
320 | static_routes_input = { | |
321 | "r1": { | |
322 | "static_routes": [ | |
323 | {"network": NETWORK[addr_type], "next_hop": NEXT_HOP_IP[addr_type]} | |
324 | ] | |
325 | } | |
326 | } | |
327 | for dut in ["r3", "r4"]: | |
328 | result = verify_fib_routes(tgen, addr_type, dut, static_routes_input) | |
329 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
330 | tc_name, result | |
331 | ) | |
332 | ||
333 | result = verify_bgp_rib(tgen, addr_type, dut, static_routes_input) | |
334 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
335 | tc_name, result | |
336 | ) | |
337 | ||
338 | step( | |
339 | "Verify that AS-110 is got added in the AS list 110 200 100 by following " | |
340 | " commands at R3 router." | |
341 | ) | |
342 | dut = "r3" | |
343 | aspath = "110 200 100" | |
344 | for addr_type in ADDR_TYPES: | |
345 | input_static_r1 = {"r1": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
346 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
347 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
348 | tc_name, result | |
349 | ) | |
350 | ||
351 | step("Configure local-as with no-prepend at R3 towards R2.") | |
352 | for addr_type in ADDR_TYPES: | |
353 | input_dict_no_prep_r3_to_r2 = { | |
354 | "r3": { | |
355 | "bgp": [ | |
356 | { | |
357 | "local_as": "300", | |
358 | "address_family": { | |
359 | addr_type: { | |
360 | "unicast": { | |
361 | "neighbor": { | |
362 | "r2": { | |
363 | "dest_link": { | |
364 | "r3-link1": { | |
365 | "local_asn": { | |
366 | "local_as": "110", | |
367 | "no_prepend": True, | |
368 | } | |
369 | } | |
370 | } | |
371 | } | |
372 | } | |
373 | } | |
374 | } | |
375 | }, | |
376 | } | |
377 | ] | |
378 | } | |
379 | } | |
380 | result = create_router_bgp(tgen, topo, input_dict_no_prep_r3_to_r2) | |
381 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
382 | tc_name, result | |
383 | ) | |
384 | ||
385 | step("Configure local-as with no-prepend at R3 towards R4.") | |
386 | dest_link = {} | |
387 | for link_no in range(1, 9): | |
388 | link = "r3-link" + str(link_no) | |
389 | dest_link[link] = {"local_asn": {"local_as": "110"}} | |
390 | for addr_type in ADDR_TYPES: | |
391 | input_dict_no_prep_r3_to_r4 = { | |
392 | "r3": { | |
393 | "bgp": [ | |
394 | { | |
395 | "local_as": "300", | |
396 | "address_family": { | |
397 | addr_type: { | |
398 | "unicast": { | |
399 | "neighbor": {"r4": {"dest_link": dest_link}} | |
400 | } | |
401 | } | |
402 | }, | |
403 | } | |
404 | ] | |
405 | } | |
406 | } | |
407 | result = create_router_bgp(tgen, topo, input_dict_no_prep_r3_to_r4) | |
408 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
409 | tc_name, result | |
410 | ) | |
411 | ||
412 | step("BGP neighborship is verified by following commands in R3 routers") | |
413 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
414 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
415 | BGP_CONVERGENCE | |
416 | ) | |
417 | ||
418 | dut = "r3" | |
419 | aspath = "200 100" | |
420 | for addr_type in ADDR_TYPES: | |
421 | input_static_r1 = {"r2": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
422 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
423 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
424 | tc_name, result | |
425 | ) | |
426 | ||
427 | step("Configure local-as with no-prepend and replace-as at R3 towards R2") | |
428 | for addr_type in ADDR_TYPES: | |
429 | input_dict_no_prep_rep_as_r3_to_r2 = { | |
430 | "r3": { | |
431 | "bgp": [ | |
432 | { | |
433 | "local_as": "300", | |
434 | "address_family": { | |
435 | addr_type: { | |
436 | "unicast": { | |
437 | "neighbor": { | |
438 | "r2": { | |
439 | "dest_link": { | |
440 | "r3-link1": { | |
441 | "local_asn": { | |
442 | "local_as": "110", | |
443 | "no_prepend": True, | |
444 | "replace_as": True, | |
445 | } | |
446 | } | |
447 | } | |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
452 | }, | |
453 | } | |
454 | ] | |
455 | } | |
456 | } | |
457 | result = create_router_bgp(tgen, topo, input_dict_no_prep_rep_as_r3_to_r2) | |
458 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
459 | tc_name, result | |
460 | ) | |
461 | ||
462 | step("Configure local-as with no-prepend and replace-as at R3 towards R4") | |
463 | dest_link = {} | |
464 | for link_no in range(1, 9): | |
465 | link = "r3-link" + str(link_no) | |
466 | dest_link[link] = { | |
467 | "local_asn": {"local_as": "110", "no_prepend": True, "replace_as": True} | |
468 | } | |
469 | for addr_type in ADDR_TYPES: | |
470 | input_dict_no_prep_rep_as_r3_to_r4 = { | |
471 | "r3": { | |
472 | "bgp": [ | |
473 | { | |
474 | "local_as": "300", | |
475 | "address_family": { | |
476 | addr_type: { | |
477 | "unicast": { | |
478 | "neighbor": {"r4": {"dest_link": dest_link}} | |
479 | } | |
480 | } | |
481 | }, | |
482 | } | |
483 | ] | |
484 | } | |
485 | } | |
486 | result = create_router_bgp(tgen, topo, input_dict_no_prep_rep_as_r3_to_r4) | |
487 | assert result is True, "Testcase {} :Failed \n Error: {}".format( | |
488 | tc_name, result | |
489 | ) | |
490 | ||
491 | step("BGP neighborship is verified by following commands in R3 routers") | |
492 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
493 | assert BGP_CONVERGENCE is True, "BGP convergence :Failed \n Error: {}".format( | |
494 | BGP_CONVERGENCE | |
495 | ) | |
496 | ||
497 | dut = "r4" | |
498 | aspath = "110 200 100" | |
499 | for addr_type in ADDR_TYPES: | |
500 | input_static_r1 = {"r1": {"static_routes": [{"network": NETWORK[addr_type]}]}} | |
501 | result = verify_bgp_rib(tgen, addr_type, dut, input_static_r1, aspath=aspath) | |
502 | assert result is True, "Testcase {} : Failed \n Error: {}".format( | |
503 | tc_name, result | |
504 | ) | |
505 | ||
506 | write_test_footer(tc_name) | |
507 | ||
508 | ||
509 | if __name__ == "__main__": | |
510 | args = ["-s"] + sys.argv[1:] | |
511 | sys.exit(pytest.main(args)) |