]>
Commit | Line | Data |
---|---|---|
b0449478 | 1 | #!/usr/bin/env python |
acddc0ed | 2 | # SPDX-License-Identifier: ISC |
b0449478 DS |
3 | # |
4 | # Copyright (c) 2019 by VMware, Inc. ("VMware") | |
5 | # Used Copyright (c) 2018 by Network Device Education Foundation, Inc. ("NetDEF") | |
6 | # in this file. | |
7 | # | |
b0449478 DS |
8 | |
9 | """ | |
10 | Following tests are covered to test BGP Graceful Restart functionality. | |
11 | Basic Common Test steps for all the test case below : | |
12 | - Create topology (setup module) | |
13 | Creating 7 routers topology | |
14 | - Bring up topology | |
15 | - Verify for bgp to converge | |
16 | - Configure BGP Graceful Restart on both the routers. | |
17 | ||
18 | TC_1_2: | |
19 | Verify that EOR message is sent out only after initial convergence | |
20 | Verify whether EOR message is received from all the peers after restart | |
21 | TC_3: | |
22 | Verify the selection deferral timer functionality when EOR is not sent | |
23 | by the helper router | |
24 | TC_11: | |
25 | Verify that selection-deferral timer sets the maximum time to | |
26 | avoid deadlock during which the best-path | |
27 | TC_10: | |
28 | Test Objective : Test GR scenarios on helper router by enabling | |
29 | Graceful Restart for multiple address families. | |
30 | TC_15: | |
31 | Test Objective : Test GR scenarios by enabling Graceful Restart | |
32 | for multiple address families.. | |
33 | TC_16: | |
34 | Test Objective : Verify BGP-GR feature when restarting node | |
35 | is a transit router for it's iBGP peers. | |
36 | TC_18: | |
37 | Test Objective : Verify that GR helper router deletes stale routes | |
38 | received from restarting node, if GR capability is not present in | |
39 | TC_19: | |
40 | Test Objective : Verify that GR routers keeps all the routes | |
41 | received from restarting node if both the routers are | |
42 | TC_26: | |
43 | Test Objective : Test GR scenarios on helper router by enabling | |
44 | Graceful Restart for multiple address families. | |
45 | TC_28: | |
46 | Test Objective : Verify if helper node goes down before restarting | |
47 | node comes up online, helper node sets the R-bit to avoid dead-lock | |
48 | TC_29: | |
49 | Test Objective : Change timers on the fly, and | |
50 | verify if it takes immediate effect. | |
51 | TC_33: | |
52 | Test Objective : Helper router receives same prefixes from two | |
53 | different routers (GR-restarting and GR-disabled). Keeps the | |
54 | TC_34_1: | |
55 | Test Objective : Restarting node doesn't preserve forwarding | |
56 | state, helper router should not keep the stale entries. | |
57 | TC_34_2: | |
58 | Test Objective : Restarting node doesn't preserve the forwarding | |
59 | state verify the behaviour on helper node, if it still keeps the | |
60 | TC_32: | |
61 | Test Objective : Restarting node is connected to multiple helper | |
62 | nodes, one of them doesn't send EOR to restarting router. Verify | |
63 | TC_37: | |
64 | Test Objective : Verify if helper node restarts before sending the | |
65 | EOR message, restarting node doesn't wait until stale path timer | |
66 | TC_30: | |
67 | Test Objective : Restarting node removes stale routes from Zebra | |
68 | after receiving an EOR from helper router. | |
69 | ||
70 | """ | |
71 | ||
72 | import os | |
73 | import sys | |
74 | import time | |
75 | import pytest | |
76 | from time import sleep | |
77 | ||
78 | # Save the Current Working Directory to find configuration files. | |
79 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
80 | sys.path.append(os.path.join("../")) | |
81 | sys.path.append(os.path.join("../lib/")) | |
82 | ||
83 | # pylint: disable=C0413 | |
84 | # Import topogen and topotest helpers | |
85 | from lib.topogen import Topogen, get_topogen | |
86 | from lib.topolog import logger | |
87 | ||
88 | # Required to instantiate the topology builder class. | |
89 | ||
90 | # Import topoJson from lib, to create topology and initial configuration | |
91 | from lib.topojson import build_config_from_json | |
92 | from lib.bgp import ( | |
93 | clear_bgp, | |
94 | verify_bgp_rib, | |
95 | verify_graceful_restart, | |
96 | create_router_bgp, | |
97 | verify_r_bit, | |
98 | verify_eor, | |
99 | verify_f_bit, | |
100 | verify_bgp_convergence, | |
101 | verify_gr_address_family, | |
102 | modify_bgp_config_when_bgpd_down, | |
103 | verify_graceful_restart_timers, | |
104 | verify_bgp_convergence_from_running_config, | |
105 | ) | |
106 | ||
107 | from lib.common_config import ( | |
108 | write_test_header, | |
109 | reset_config_on_routers, | |
110 | start_topology, | |
111 | kill_router_daemons, | |
112 | start_router_daemons, | |
113 | verify_rib, | |
114 | check_address_types, | |
115 | write_test_footer, | |
116 | check_router_status, | |
117 | step, | |
118 | get_frr_ipv6_linklocal, | |
119 | required_linux_kernel_version, | |
120 | ) | |
121 | ||
122 | pytestmark = [pytest.mark.bgpd] | |
123 | ||
124 | ||
125 | # Global variables | |
126 | BGP_CONVERGENCE = False | |
127 | GR_RESTART_TIMER = 5 | |
128 | GR_SELECT_DEFER_TIMER = 5 | |
129 | GR_STALEPATH_TIMER = 5 | |
130 | PREFERRED_NEXT_HOP = "link_local" | |
131 | NEXT_HOP_4 = ["192.168.1.1", "192.168.4.2"] | |
132 | NEXT_HOP_6 = ["fd00:0:0:1::1", "fd00:0:0:4::2"] | |
133 | ||
134 | ||
135 | def setup_module(mod): | |
136 | """ | |
137 | Sets up the pytest environment | |
138 | ||
139 | * `mod`: module name | |
140 | """ | |
141 | ||
142 | # Required linux kernel version for this suite to run. | |
143 | result = required_linux_kernel_version("4.16") | |
144 | if result is not True: | |
d63c7094 | 145 | pytest.skip("Kernel requirements are not met, kernel version should be >=4.16") |
b0449478 DS |
146 | |
147 | global ADDR_TYPES | |
148 | ||
149 | testsuite_run_time = time.asctime(time.localtime(time.time())) | |
150 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
151 | logger.info("=" * 40) | |
152 | ||
153 | logger.info("Running setup_module to create topology") | |
154 | ||
155 | # This function initiates the topology build with Topogen... | |
156 | json_file = "{}/bgp_gr_topojson_topo2.json".format(CWD) | |
157 | tgen = Topogen(json_file, mod.__name__) | |
158 | global topo | |
159 | topo = tgen.json_topo | |
160 | # ... and here it calls Mininet initialization functions. | |
161 | ||
162 | # Starting topology, create tmp files which are loaded to routers | |
d60a3f0e | 163 | # to start daemons and then start routers |
b0449478 DS |
164 | start_topology(tgen) |
165 | ||
166 | # Creating configuration from JSON | |
167 | build_config_from_json(tgen, topo) | |
168 | ||
169 | # Api call verify whether BGP is converged | |
170 | ADDR_TYPES = check_address_types() | |
171 | ||
172 | for addr_type in ADDR_TYPES: | |
173 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
174 | assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error:" " {}".format( | |
175 | BGP_CONVERGENCE | |
176 | ) | |
177 | ||
178 | logger.info("Running setup_module() done") | |
179 | ||
180 | ||
181 | def teardown_module(mod): | |
182 | """ | |
183 | Teardown the pytest environment | |
184 | ||
185 | * `mod`: module name | |
186 | """ | |
187 | ||
188 | logger.info("Running teardown_module to delete topology") | |
189 | ||
190 | tgen = get_topogen() | |
191 | ||
192 | # Stop toplogy and Remove tmp files | |
193 | tgen.stop_topology() | |
194 | ||
195 | logger.info( | |
196 | "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) | |
197 | ) | |
198 | logger.info("=" * 40) | |
199 | ||
200 | ||
201 | def configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut, peer): | |
202 | """ | |
203 | This function groups the repetitive function calls into one function. | |
204 | """ | |
205 | ||
206 | logger.info("configure_gr_followed_by_clear: dut %s peer %s", dut, peer) | |
207 | ||
208 | result = create_router_bgp(tgen, topo, input_dict) | |
209 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
210 | ||
211 | for addr_type in ADDR_TYPES: | |
212 | neighbor = topo["routers"][peer]["links"][dut][addr_type].split("/")[0] | |
213 | clear_bgp(tgen, addr_type, dut, neighbor=neighbor) | |
214 | ||
215 | for addr_type in ADDR_TYPES: | |
216 | neighbor = topo["routers"][dut]["links"][peer][addr_type].split("/")[0] | |
217 | clear_bgp(tgen, addr_type, peer, neighbor=neighbor) | |
218 | ||
219 | result = verify_bgp_convergence_from_running_config(tgen) | |
220 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
221 | ||
222 | return True | |
223 | ||
224 | ||
225 | def next_hop_per_address_family(tgen, dut, peer, addr_type, next_hop_dict): | |
226 | """ | |
227 | This function returns link_local or global next_hop per address-family | |
228 | """ | |
229 | ||
230 | intferface = topo["routers"][peer]["links"]["{}-link1".format(dut)]["interface"] | |
231 | if addr_type == "ipv6" and "link_local" in PREFERRED_NEXT_HOP: | |
232 | next_hop = get_frr_ipv6_linklocal(tgen, peer, intf=intferface) | |
233 | else: | |
234 | next_hop = next_hop_dict[addr_type] | |
235 | ||
236 | return next_hop | |
237 | ||
238 | ||
239 | def test_BGP_GR_26_p2(request): | |
240 | """ | |
241 | Test Objective : Test GR scenarios on helper router by enabling | |
242 | Graceful Restart for multiple address families. | |
243 | """ | |
244 | ||
245 | tgen = get_topogen() | |
246 | tc_name = request.node.name | |
247 | write_test_header(tc_name) | |
248 | ||
249 | # Check router status | |
250 | check_router_status(tgen) | |
251 | ||
252 | # Don't run this test if we have any failure. | |
253 | if tgen.routers_have_failure(): | |
254 | pytest.skip(tgen.errors) | |
255 | ||
256 | # Creating configuration from JSON | |
257 | reset_config_on_routers(tgen) | |
258 | ||
259 | logger.info( | |
260 | "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] initialized" | |
261 | ) | |
262 | ||
263 | # Configure graceful-restart | |
264 | input_dict = { | |
265 | "r1": { | |
266 | "bgp": { | |
267 | "address_family": { | |
268 | "ipv4": { | |
269 | "unicast": { | |
270 | "neighbor": { | |
271 | "r3": { | |
272 | "dest_link": { | |
273 | "r1": { | |
274 | "graceful-restart": True, | |
275 | "next_hop_self": True, | |
276 | "activate": "ipv6", | |
277 | } | |
278 | } | |
279 | } | |
280 | } | |
281 | } | |
282 | }, | |
283 | "ipv6": { | |
284 | "unicast": { | |
285 | "neighbor": { | |
286 | "r3": { | |
287 | "dest_link": { | |
288 | "r1": { | |
289 | "graceful-restart": True, | |
290 | "next_hop_self": True, | |
291 | "activate": "ipv4", | |
292 | } | |
293 | } | |
294 | } | |
295 | } | |
296 | } | |
297 | }, | |
298 | } | |
299 | } | |
300 | }, | |
301 | "r3": { | |
302 | "bgp": { | |
303 | "address_family": { | |
304 | "ipv4": { | |
305 | "unicast": { | |
306 | "neighbor": { | |
307 | "r1": { | |
308 | "dest_link": { | |
309 | "r3": { | |
310 | "graceful-restart-helper": True, | |
311 | "activate": "ipv6", | |
312 | } | |
313 | } | |
314 | } | |
315 | } | |
316 | } | |
317 | }, | |
318 | "ipv6": { | |
319 | "unicast": { | |
320 | "neighbor": { | |
321 | "r1": { | |
322 | "dest_link": { | |
323 | "r3": { | |
324 | "graceful-restart-helper": True, | |
325 | "activate": "ipv4", | |
326 | } | |
327 | } | |
328 | } | |
329 | } | |
330 | } | |
331 | }, | |
332 | } | |
333 | } | |
334 | }, | |
335 | } | |
336 | ||
337 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
338 | ||
339 | for addr_type in ADDR_TYPES: | |
340 | result = verify_graceful_restart( | |
341 | tgen, topo, addr_type, input_dict, dut="r3", peer="r1" | |
342 | ) | |
343 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
344 | tc_name, result | |
345 | ) | |
346 | ||
347 | # Verifying BGP RIB routes | |
348 | dut = "r3" | |
349 | input_topo = {key: topo["routers"][key] for key in ["r1"]} | |
350 | result = verify_bgp_rib(tgen, addr_type, dut, input_topo) | |
351 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
352 | tc_name, result | |
353 | ) | |
354 | ||
355 | # Verifying RIB routes before shutting down BGPd daemon | |
356 | result = verify_rib(tgen, addr_type, dut, input_topo) | |
357 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
358 | tc_name, result | |
359 | ) | |
360 | ||
361 | # Kill BGPd daemon on R1 | |
362 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
363 | ||
364 | for addr_type in ADDR_TYPES: | |
365 | # Verifying BGP RIB routes | |
366 | input_topo = {key: topo["routers"][key] for key in ["r1"]} | |
367 | result = verify_bgp_rib(tgen, addr_type, dut, input_topo) | |
368 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
369 | tc_name, result | |
370 | ) | |
371 | ||
372 | # Verifying RIB routes before shutting down BGPd daemon | |
373 | result = verify_rib(tgen, addr_type, dut, input_topo) | |
374 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
375 | tc_name, result | |
376 | ) | |
377 | ||
378 | # Start BGPd daemon on R1 | |
379 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
380 | ||
381 | for addr_type in ADDR_TYPES: | |
382 | # Verifying BGP RIB routes | |
383 | input_topo = {key: topo["routers"][key] for key in ["r1"]} | |
384 | result = verify_bgp_rib(tgen, addr_type, dut, input_topo) | |
385 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
386 | tc_name, result | |
387 | ) | |
388 | ||
389 | # Verifying RIB routes before shutting down BGPd daemon | |
390 | result = verify_rib(tgen, addr_type, dut, input_topo) | |
391 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
392 | tc_name, result | |
393 | ) | |
394 | ||
395 | # verify multi address family | |
396 | result = verify_gr_address_family( | |
397 | tgen, | |
398 | topo, | |
399 | addr_type, | |
400 | "ipv4Unicast", | |
401 | dut="r1", | |
402 | peer="r3", | |
403 | ) | |
404 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
405 | tc_name, result | |
406 | ) | |
407 | ||
408 | # verify multi address family | |
409 | result = verify_gr_address_family( | |
410 | tgen, | |
411 | topo, | |
412 | addr_type, | |
413 | "ipv6Unicast", | |
414 | dut="r1", | |
415 | peer="r3", | |
416 | ) | |
417 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
418 | tc_name, result | |
419 | ) | |
420 | ||
421 | # verify multi address family | |
422 | result = verify_gr_address_family( | |
423 | tgen, | |
424 | topo, | |
425 | addr_type, | |
426 | "ipv4Unicast", | |
427 | dut="r3", | |
428 | peer="r1", | |
429 | ) | |
430 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
431 | tc_name, result | |
432 | ) | |
433 | ||
434 | # verify multi address family | |
435 | result = verify_gr_address_family( | |
436 | tgen, | |
437 | topo, | |
438 | addr_type, | |
439 | "ipv6Unicast", | |
440 | dut="r3", | |
441 | peer="r1", | |
442 | ) | |
443 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
444 | tc_name, result | |
445 | ) | |
446 | ||
447 | write_test_footer(tc_name) | |
448 | ||
449 | ||
450 | def test_BGP_GR_chaos_28_p1(request): | |
451 | """ | |
452 | Test Objective : Verify if helper node goes down before restarting | |
453 | node comes up online, helper node sets the R-bit to avoid dead-lock | |
454 | till SDT expiry. | |
455 | """ | |
456 | ||
457 | tgen = get_topogen() | |
458 | tc_name = request.node.name | |
459 | write_test_header(tc_name) | |
460 | ||
461 | # Check router status | |
462 | check_router_status(tgen) | |
463 | ||
464 | # Don't run this test if we have any failure. | |
465 | if tgen.routers_have_failure(): | |
466 | pytest.skip(tgen.errors) | |
467 | ||
468 | # Creating configuration from JSON | |
469 | reset_config_on_routers(tgen) | |
470 | ||
471 | logger.info( | |
472 | "Test Case: test_BGP_GR_chaos_28 :" | |
473 | "[Helper Mode]R3-----R1[Restart Mode] initialized" | |
474 | ) | |
475 | ||
476 | # Configure graceful-restart | |
477 | input_dict = { | |
478 | "r1": { | |
479 | "bgp": { | |
480 | "address_family": { | |
481 | "ipv4": { | |
482 | "unicast": { | |
483 | "neighbor": { | |
484 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
485 | } | |
486 | } | |
487 | }, | |
488 | "ipv6": { | |
489 | "unicast": { | |
490 | "neighbor": { | |
491 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
492 | } | |
493 | } | |
494 | }, | |
495 | } | |
496 | } | |
497 | }, | |
498 | "r3": { | |
499 | "bgp": { | |
500 | "address_family": { | |
501 | "ipv4": { | |
502 | "unicast": { | |
503 | "neighbor": { | |
504 | "r1": { | |
505 | "dest_link": { | |
506 | "r3": {"graceful-restart-helper": True} | |
507 | } | |
508 | } | |
509 | } | |
510 | } | |
511 | }, | |
512 | "ipv6": { | |
513 | "unicast": { | |
514 | "neighbor": { | |
515 | "r1": { | |
516 | "dest_link": { | |
517 | "r3": {"graceful-restart-helper": True} | |
518 | } | |
519 | } | |
520 | } | |
521 | } | |
522 | }, | |
523 | } | |
524 | } | |
525 | }, | |
526 | } | |
527 | ||
528 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
529 | ||
530 | for addr_type in ADDR_TYPES: | |
531 | result = verify_graceful_restart( | |
532 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
533 | ) | |
534 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
535 | tc_name, result | |
536 | ) | |
537 | ||
538 | logger.info("[Step 1] : Kill BGPd daemon on R1..") | |
539 | ||
540 | # Kill BGPd daemon on R1 | |
541 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
542 | ||
543 | logger.info("[Step 2] : Kill BGPd daemon on R3..") | |
544 | ||
545 | # Kill BGPd daemon on R3 | |
546 | kill_router_daemons(tgen, "r3", ["bgpd"]) | |
547 | ||
548 | logger.info("[Step 3] : Start BGPd daemon on R1..") | |
549 | ||
550 | # Start BGPd daemon on R1 | |
551 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
552 | ||
553 | logger.info("[Step 4] : Start BGPd daemon on R3..") | |
554 | ||
555 | # Start BGPd daemon on R3 | |
556 | start_router_daemons(tgen, "r3", ["bgpd"]) | |
557 | ||
558 | # Verify r_bit | |
559 | for addr_type in ADDR_TYPES: | |
560 | result = verify_r_bit(tgen, topo, addr_type, input_dict, dut="r3", peer="r1") | |
561 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
562 | tc_name, result | |
563 | ) | |
564 | ||
565 | write_test_footer(tc_name) | |
566 | ||
567 | ||
568 | def test_BGP_GR_chaos_29_p1(request): | |
569 | """ | |
570 | Test Objective : Change timers on the fly, and | |
571 | verify if it takes immediate effect. | |
572 | """ | |
573 | ||
574 | tgen = get_topogen() | |
575 | tc_name = request.node.name | |
576 | write_test_header(tc_name) | |
577 | ||
578 | # Check router status | |
579 | check_router_status(tgen) | |
580 | ||
581 | # Don't run this test if we have any failure. | |
582 | if tgen.routers_have_failure(): | |
583 | pytest.skip(tgen.errors) | |
584 | ||
585 | # Creating configuration from JSON | |
586 | reset_config_on_routers(tgen) | |
587 | ||
588 | logger.info( | |
589 | " Test Case : test_BGP_GR_chaos_29" | |
590 | " BGP GR [Helper Mode]R3-----R1[Restart Mode]" | |
591 | " and [restart-time 150]R1 initialized" | |
592 | ) | |
593 | ||
594 | # Configure graceful-restart and timers | |
595 | input_dict = { | |
596 | "r1": { | |
597 | "bgp": { | |
598 | "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER}}, | |
599 | "address_family": { | |
600 | "ipv4": { | |
601 | "unicast": { | |
602 | "neighbor": { | |
603 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
604 | } | |
605 | } | |
606 | }, | |
607 | "ipv6": { | |
608 | "unicast": { | |
609 | "neighbor": { | |
610 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
611 | } | |
612 | } | |
613 | }, | |
614 | }, | |
615 | } | |
616 | }, | |
617 | "r3": { | |
618 | "bgp": { | |
619 | "address_family": { | |
620 | "ipv4": { | |
621 | "unicast": { | |
622 | "neighbor": { | |
623 | "r1": { | |
624 | "dest_link": { | |
625 | "r3": {"graceful-restart-helper": True} | |
626 | } | |
627 | } | |
628 | } | |
629 | } | |
630 | }, | |
631 | "ipv6": { | |
632 | "unicast": { | |
633 | "neighbor": { | |
634 | "r1": { | |
635 | "dest_link": { | |
636 | "r3": {"graceful-restart-helper": True} | |
637 | } | |
638 | } | |
639 | } | |
640 | } | |
641 | }, | |
642 | } | |
643 | } | |
644 | }, | |
645 | } | |
646 | ||
647 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
648 | ||
649 | for addr_type in ADDR_TYPES: | |
650 | result = verify_graceful_restart( | |
651 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
652 | ) | |
653 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
654 | tc_name, result | |
655 | ) | |
656 | ||
657 | # Verify graceful-restart timers | |
658 | input_dict_2 = { | |
659 | "r1": { | |
660 | "bgp": { | |
661 | "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER + 5}} | |
662 | } | |
663 | } | |
664 | } | |
665 | ||
666 | result = create_router_bgp(tgen, topo, input_dict_2) | |
667 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
668 | ||
669 | for addr_type in ADDR_TYPES: | |
670 | input_dict_2 = { | |
671 | "r1": { | |
672 | "bgp": { | |
673 | "graceful-restart": {"timer": {"restart-time": GR_RESTART_TIMER}} | |
674 | } | |
675 | } | |
676 | } | |
677 | ||
678 | result = verify_graceful_restart_timers( | |
679 | tgen, topo, addr_type, input_dict_2, dut="r3", peer="r1" | |
680 | ) | |
681 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
682 | tc_name, result | |
683 | ) | |
684 | ||
685 | for addr_type in ADDR_TYPES: | |
686 | # Verifying BGP RIB routes before shutting down BGPd daemon | |
687 | dut = "r3" | |
688 | input_dict = {key: topo["routers"][key] for key in ["r1"]} | |
689 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict) | |
690 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
691 | tc_name, result | |
692 | ) | |
693 | ||
694 | # Verifying RIB routes before shutting down BGPd daemon | |
695 | result = verify_rib(tgen, addr_type, dut, input_dict) | |
696 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
697 | tc_name, result | |
698 | ) | |
699 | ||
700 | logger.info("[Step 2] : Kill BGPd daemon on R1..") | |
701 | ||
702 | # Kill BGPd daemon on R1 | |
703 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
704 | ||
705 | logger.info("[Step 3] : Wait for {} seconds..".format(GR_RESTART_TIMER)) | |
706 | ||
707 | # Waiting for GR_RESTART_TIMER | |
708 | sleep(GR_RESTART_TIMER) | |
709 | ||
710 | for addr_type in ADDR_TYPES: | |
711 | # Verifying BGP RIB routes before shutting down BGPd daemon | |
712 | input_dict = {key: topo["routers"][key] for key in ["r1"]} | |
713 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict, expected=False) | |
714 | assert result is not True, ( | |
715 | "Testcase {} : Failed \n " | |
d63c7094 KK |
716 | "Expected: Routes should not be present in {} BGP RIB \n " |
717 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 718 | ) |
b0449478 DS |
719 | |
720 | # Verifying RIB routes before shutting down BGPd daemon | |
721 | result = verify_rib(tgen, addr_type, dut, input_dict, expected=False) | |
722 | assert result is not True, ( | |
723 | "Testcase {} : Failed \n " | |
d63c7094 KK |
724 | "Expected: Routes should not be present in {} FIB \n " |
725 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 726 | ) |
b0449478 DS |
727 | |
728 | logger.info("[Step 4] : Start BGPd daemon on R1..") | |
729 | ||
730 | # Start BGPd daemon on R1 | |
731 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
732 | ||
733 | write_test_footer(tc_name) | |
734 | ||
735 | ||
736 | def test_BGP_GR_chaos_33_p1(request): | |
737 | """ | |
738 | Test Objective : Helper router receives same prefixes from two | |
739 | different routers (GR-restarting and GR-disabled). Keeps the | |
740 | stale entry only for GR-restarting node(next-hop is correct). | |
741 | """ | |
742 | ||
743 | tgen = get_topogen() | |
744 | tc_name = request.node.name | |
745 | write_test_header(tc_name) | |
746 | ||
747 | # Check router status | |
748 | check_router_status(tgen) | |
749 | ||
750 | # Don't run this test if we have any failure. | |
751 | if tgen.routers_have_failure(): | |
752 | pytest.skip(tgen.errors) | |
753 | ||
754 | # Creating configuration from JSON | |
755 | reset_config_on_routers(tgen) | |
756 | ||
757 | logger.info( | |
758 | " Test Case : test_BGP_GR_chaos_33 " | |
759 | "BGP GR " | |
760 | "[Restart Mode]R1--R3[Helper Mode]--R4[Disabled Mode]" | |
761 | ) | |
762 | ||
763 | # Configure graceful-restart | |
764 | input_dict = { | |
765 | "r1": { | |
766 | "bgp": { | |
767 | "address_family": { | |
768 | "ipv4": { | |
769 | "unicast": { | |
770 | "neighbor": { | |
771 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
772 | } | |
773 | } | |
774 | }, | |
775 | "ipv6": { | |
776 | "unicast": { | |
777 | "neighbor": { | |
778 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
779 | } | |
780 | } | |
781 | }, | |
782 | } | |
783 | } | |
784 | }, | |
785 | "r3": { | |
786 | "bgp": { | |
787 | "address_family": { | |
788 | "ipv4": { | |
789 | "unicast": { | |
790 | "neighbor": { | |
791 | "r1": { | |
792 | "dest_link": { | |
793 | "r3": {"graceful-restart-helper": True} | |
794 | } | |
795 | } | |
796 | } | |
797 | } | |
798 | }, | |
799 | "ipv6": { | |
800 | "unicast": { | |
801 | "neighbor": { | |
802 | "r1": { | |
803 | "dest_link": { | |
804 | "r3": {"graceful-restart-helper": True} | |
805 | } | |
806 | } | |
807 | } | |
808 | } | |
809 | }, | |
810 | } | |
811 | } | |
812 | }, | |
813 | "r4": { | |
814 | "bgp": { | |
815 | "address_family": { | |
816 | "ipv4": { | |
817 | "unicast": { | |
818 | "neighbor": { | |
819 | "r3": { | |
820 | "dest_link": { | |
821 | "r4": {"graceful-restart-disable": True} | |
822 | } | |
823 | } | |
824 | } | |
825 | } | |
826 | }, | |
827 | "ipv6": { | |
828 | "unicast": { | |
829 | "neighbor": { | |
830 | "r3": { | |
831 | "dest_link": { | |
832 | "r4": {"graceful-restart-disable": True} | |
833 | } | |
834 | } | |
835 | } | |
836 | } | |
837 | }, | |
838 | } | |
839 | } | |
840 | }, | |
841 | } | |
842 | ||
843 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
844 | ||
845 | for addr_type in ADDR_TYPES: | |
846 | result = verify_graceful_restart( | |
847 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
848 | ) | |
849 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
850 | tc_name, result | |
851 | ) | |
852 | ||
853 | logger.info("[Step 2] : Advertise same networks from R1 and R4..") | |
854 | ||
855 | # Api call to delete advertised networks | |
856 | input_dict_2 = { | |
857 | "r1": { | |
858 | "bgp": { | |
859 | "address_family": { | |
860 | "ipv4": { | |
861 | "unicast": { | |
862 | "advertise_networks": [ | |
863 | { | |
864 | "network": "200.0.20.1/32", | |
865 | "no_of_network": 2, | |
866 | } | |
867 | ] | |
868 | } | |
869 | }, | |
870 | "ipv6": { | |
871 | "unicast": { | |
872 | "advertise_networks": [ | |
873 | {"network": "2001::1/128", "no_of_network": 2} | |
874 | ] | |
875 | } | |
876 | }, | |
877 | } | |
878 | } | |
879 | }, | |
880 | "r4": { | |
881 | "bgp": { | |
882 | "address_family": { | |
883 | "ipv4": { | |
884 | "unicast": { | |
885 | "advertise_networks": [ | |
886 | {"network": "200.0.20.1/32", "no_of_network": 2} | |
887 | ] | |
888 | } | |
889 | }, | |
890 | "ipv6": { | |
891 | "unicast": { | |
892 | "advertise_networks": [ | |
893 | {"network": "2001::1/128", "no_of_network": 2} | |
894 | ] | |
895 | } | |
896 | }, | |
897 | } | |
898 | } | |
899 | }, | |
900 | } | |
901 | ||
902 | result = create_router_bgp(tgen, topo, input_dict_2) | |
903 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
904 | ||
905 | for addr_type in ADDR_TYPES: | |
906 | # Verifying RIB routes | |
907 | dut = "r3" | |
908 | peer1 = "r1" | |
909 | peer2 = "r4" | |
910 | intf1 = topo["routers"][peer1]["links"][dut]["interface"] | |
911 | intf2 = topo["routers"][peer2]["links"][dut]["interface"] | |
912 | ||
913 | if addr_type == "ipv4": | |
914 | next_hop_4 = NEXT_HOP_4 | |
915 | result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_4) | |
916 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
917 | tc_name, result | |
918 | ) | |
919 | ||
920 | if addr_type == "ipv6": | |
921 | if "link_local" in PREFERRED_NEXT_HOP: | |
922 | next_hop1 = get_frr_ipv6_linklocal(tgen, peer1, intf=intf1) | |
923 | next_hop2 = get_frr_ipv6_linklocal(tgen, peer2, intf=intf2) | |
924 | ||
925 | next_hop_6 = [next_hop1, next_hop2] | |
926 | else: | |
927 | next_hop_6 = NEXT_HOP_6 | |
928 | ||
929 | result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_6) | |
930 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
931 | tc_name, result | |
932 | ) | |
933 | ||
934 | logger.info("[Step 3] : Kill BGPd daemon on R1 and R4..") | |
935 | ||
936 | # Kill BGPd daemon on R1 | |
937 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
938 | ||
939 | # Kill BGPd daemon on R4 | |
940 | kill_router_daemons(tgen, "r4", ["bgpd"]) | |
941 | ||
942 | for addr_type in ADDR_TYPES: | |
943 | # Verifying RIB routes | |
944 | next_hop_6 = ["fd00:0:0:1::1"] | |
945 | if addr_type == "ipv4": | |
946 | next_hop_4 = NEXT_HOP_4[0] | |
947 | ||
948 | result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_4) | |
949 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
950 | tc_name, result | |
951 | ) | |
952 | ||
953 | if addr_type == "ipv6": | |
954 | if "link_local" in PREFERRED_NEXT_HOP: | |
955 | next_hop_6 = get_frr_ipv6_linklocal(tgen, peer1, intf=intf1) | |
956 | else: | |
957 | next_hop_6 = NEXT_HOP_6[0] | |
958 | ||
959 | result = verify_rib(tgen, addr_type, dut, input_dict_2, next_hop_6) | |
960 | ||
961 | # Verifying RIB routes | |
962 | if addr_type == "ipv4": | |
963 | next_hop_4 = NEXT_HOP_4[1] | |
964 | result = verify_rib( | |
965 | tgen, addr_type, dut, input_dict_2, next_hop_4, expected=False | |
966 | ) | |
967 | assert result is not True, ( | |
968 | "Testcase {} : Failed \n " | |
d63c7094 KK |
969 | "Expected: Routes should not be present in {} FIB \n " |
970 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 971 | ) |
b0449478 DS |
972 | |
973 | if addr_type == "ipv6": | |
974 | if "link_local" in PREFERRED_NEXT_HOP: | |
975 | next_hop_6 = get_frr_ipv6_linklocal(tgen, peer2, intf=intf2) | |
976 | else: | |
977 | next_hop_6 = NEXT_HOP_6[1] | |
978 | ||
979 | result = verify_rib( | |
980 | tgen, addr_type, dut, input_dict_2, next_hop_6, expected=False | |
981 | ) | |
982 | assert result is not True, ( | |
983 | "Testcase {} : Failed \n " | |
d63c7094 KK |
984 | "Expected: Routes should not be present in {} FIB \n " |
985 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 986 | ) |
b0449478 DS |
987 | |
988 | logger.info("[Step 4] : Start BGPd daemon on R1 and R4..") | |
989 | ||
990 | # Start BGPd daemon on R1 | |
991 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
992 | ||
993 | # Start BGPd daemon on R4 | |
994 | start_router_daemons(tgen, "r4", ["bgpd"]) | |
995 | ||
996 | write_test_footer(tc_name) | |
997 | ||
998 | ||
999 | def test_BGP_GR_chaos_34_2_p1(request): | |
1000 | """ | |
1001 | Test Objective : Restarting node doesn't preserve the forwarding | |
1002 | state verify the behaviour on helper node, if it still keeps the | |
1003 | stale routes. | |
1004 | """ | |
1005 | ||
1006 | tgen = get_topogen() | |
1007 | tc_name = request.node.name | |
1008 | write_test_header(tc_name) | |
1009 | ||
1010 | # Check router status | |
1011 | check_router_status(tgen) | |
1012 | ||
1013 | # Don't run this test if we have any failure. | |
1014 | if tgen.routers_have_failure(): | |
1015 | pytest.skip(tgen.errors) | |
1016 | ||
1017 | # Creating configuration from JSON | |
1018 | reset_config_on_routers(tgen) | |
1019 | ||
1020 | logger.info( | |
1021 | " Test Case : test_BGP_GR_chaos_34 " | |
1022 | "BGP GR " | |
1023 | "[Restart Mode]R1---R3[Helper Mode]" | |
1024 | ) | |
1025 | ||
1026 | logger.info("[Step 1] : Configure restarting" " router R1 to prevent ") | |
1027 | logger.info("[Step 2] : Reset the session" " between R1 and R3..") | |
1028 | ||
1029 | # Configure graceful-restart | |
1030 | input_dict = { | |
1031 | "r1": { | |
1032 | "bgp": { | |
1033 | "graceful-restart": {"preserve-fw-state": True, "disable-eor": True}, | |
1034 | "address_family": { | |
1035 | "ipv4": { | |
1036 | "unicast": { | |
1037 | "neighbor": { | |
1038 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
1039 | } | |
1040 | } | |
1041 | }, | |
1042 | "ipv6": { | |
1043 | "unicast": { | |
1044 | "neighbor": { | |
1045 | "r3": {"dest_link": {"r1": {"graceful-restart": True}}} | |
1046 | } | |
1047 | } | |
1048 | }, | |
1049 | }, | |
1050 | } | |
1051 | }, | |
1052 | "r3": { | |
1053 | "bgp": { | |
1054 | "address_family": { | |
1055 | "ipv4": { | |
1056 | "unicast": { | |
1057 | "neighbor": { | |
1058 | "r1": { | |
1059 | "dest_link": { | |
1060 | "r3": {"graceful-restart-helper": True} | |
1061 | } | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | }, | |
1066 | "ipv6": { | |
1067 | "unicast": { | |
1068 | "neighbor": { | |
1069 | "r1": { | |
1070 | "dest_link": { | |
1071 | "r3": {"graceful-restart-helper": True} | |
1072 | } | |
1073 | } | |
1074 | } | |
1075 | } | |
1076 | }, | |
1077 | } | |
1078 | } | |
1079 | }, | |
1080 | } | |
1081 | ||
1082 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
1083 | ||
1084 | for addr_type in ADDR_TYPES: | |
1085 | result = verify_graceful_restart( | |
1086 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
1087 | ) | |
1088 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
1089 | tc_name, result | |
1090 | ) | |
1091 | ||
1092 | # Verify f-bit before killing BGPd daemon | |
1093 | result = verify_f_bit(tgen, topo, addr_type, input_dict, "r3", "r1") | |
1094 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
1095 | tc_name, result | |
1096 | ) | |
1097 | ||
1098 | # Verifying BGP RIB routes after starting BGPd daemon | |
1099 | dut = "r3" | |
1100 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
1101 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
1102 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
1103 | tc_name, result | |
1104 | ) | |
1105 | ||
1106 | # Verifying RIB routes | |
1107 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
1108 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
1109 | tc_name, result | |
1110 | ) | |
1111 | ||
1112 | logger.info("[Step 3] : Kill BGPd daemon on R1..") | |
1113 | ||
1114 | # Kill BGPd daemon on R1 | |
1115 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
1116 | ||
1117 | logger.info("[Step 4] : Withdraw/delete the prefixes " "originated from R1..") | |
1118 | ||
1119 | # Api call to delete advertised networks | |
1120 | network = {"ipv4": "101.0.20.1/32", "ipv6": "1::1/128"} | |
1121 | for addr_type in ADDR_TYPES: | |
1122 | input_dict_2 = { | |
1123 | "r1": { | |
1124 | "bgp": { | |
1125 | "address_family": { | |
1126 | addr_type: { | |
1127 | "unicast": { | |
1128 | "advertise_networks": [ | |
1129 | { | |
1130 | "network": network[addr_type], | |
1131 | "no_of_network": 5, | |
1132 | "delete": True, | |
1133 | } | |
1134 | ] | |
1135 | } | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_2) | |
1143 | assert result is True, "Testcase {} : Failed \n Error {}".format( | |
1144 | tc_name, result | |
1145 | ) | |
1146 | ||
1147 | logger.info("[Step 5] : Remove the CLI from R1's config to " "set the F-bit..") | |
1148 | ||
1149 | # Modify graceful-restart config not to set f-bit | |
1150 | # and write to /etc/frr | |
1151 | input_dict_2 = {"r1": {"bgp": {"graceful-restart": {"preserve-fw-state": False}}}} | |
1152 | ||
1153 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_2) | |
1154 | assert result is True, "Testcase {} : Failed \n Error {}".format(tc_name, result) | |
1155 | ||
1156 | logger.info("[Step 6] : Bring up the BGPd daemon on R1 again..") | |
1157 | ||
1158 | # Start BGPd daemon on R1 | |
1159 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
1160 | ||
1161 | for addr_type in ADDR_TYPES: | |
1162 | # Verify f-bit after starting BGPd daemon | |
1163 | result = verify_f_bit( | |
1164 | tgen, topo, addr_type, input_dict, "r3", "r1", expected=False | |
1165 | ) | |
d63c7094 KK |
1166 | assert result is not True, ( |
1167 | "Testcase {} : Failed \n " | |
1168 | "Expected: F-bit should not be set to True in r3\n" | |
1169 | "Found: {}".format(tc_name, result) | |
b0449478 | 1170 | ) |
b0449478 DS |
1171 | |
1172 | # Verifying BGP RIB routes after starting BGPd daemon | |
1173 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
1174 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
1175 | assert result is not True, ( | |
1176 | "Testcase {} : Failed \n " | |
d63c7094 KK |
1177 | "Expected: Routes should not be present in {} BGP RIB \n " |
1178 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 1179 | ) |
b0449478 DS |
1180 | |
1181 | # Verifying RIB routes | |
1182 | result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
1183 | assert result is not True, ( | |
1184 | "Testcase {} : Failed \n " | |
d63c7094 KK |
1185 | "Expected: Routes should not be present in {} FIB \n " |
1186 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 1187 | ) |
b0449478 DS |
1188 | |
1189 | write_test_footer(tc_name) | |
1190 | ||
1191 | ||
1192 | if __name__ == "__main__": | |
1193 | args = ["-s"] + sys.argv[1:] | |
1194 | sys.exit(pytest.main(args)) |