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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 | These tests have been broken up into 4 sub python scripts because | |
71 | the totality of run time for this script was greater than 10 minutes | |
72 | """ | |
73 | ||
74 | import os | |
75 | import sys | |
76 | import time | |
77 | import pytest | |
78 | from time import sleep | |
79 | ||
80 | # Save the Current Working Directory to find configuration files. | |
81 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
82 | sys.path.append(os.path.join("../")) | |
83 | sys.path.append(os.path.join("../lib/")) | |
84 | ||
85 | # pylint: disable=C0413 | |
86 | # Import topogen and topotest helpers | |
87 | from lib.topogen import Topogen, get_topogen | |
88 | from lib.topolog import logger | |
89 | ||
90 | # Required to instantiate the topology builder class. | |
91 | ||
92 | # Import topoJson from lib, to create topology and initial configuration | |
93 | from lib.topojson import build_config_from_json | |
94 | from lib.bgp import ( | |
95 | clear_bgp, | |
96 | verify_bgp_rib, | |
97 | verify_graceful_restart, | |
98 | create_router_bgp, | |
99 | verify_r_bit, | |
100 | verify_eor, | |
101 | verify_f_bit, | |
102 | verify_bgp_convergence, | |
103 | verify_gr_address_family, | |
104 | modify_bgp_config_when_bgpd_down, | |
105 | verify_graceful_restart_timers, | |
106 | verify_bgp_convergence_from_running_config, | |
107 | ) | |
108 | ||
109 | from lib.common_config import ( | |
110 | write_test_header, | |
111 | reset_config_on_routers, | |
112 | start_topology, | |
113 | kill_router_daemons, | |
114 | start_router_daemons, | |
115 | verify_rib, | |
116 | check_address_types, | |
117 | write_test_footer, | |
118 | check_router_status, | |
119 | step, | |
120 | get_frr_ipv6_linklocal, | |
121 | required_linux_kernel_version, | |
122 | ) | |
123 | ||
124 | pytestmark = [pytest.mark.bgpd] | |
125 | ||
126 | ||
127 | # Global variables | |
128 | BGP_CONVERGENCE = False | |
129 | GR_RESTART_TIMER = 5 | |
130 | GR_SELECT_DEFER_TIMER = 5 | |
131 | GR_STALEPATH_TIMER = 5 | |
132 | PREFERRED_NEXT_HOP = "link_local" | |
133 | NEXT_HOP_4 = ["192.168.1.1", "192.168.4.2"] | |
134 | NEXT_HOP_6 = ["fd00:0:0:1::1", "fd00:0:0:4::2"] | |
135 | ||
136 | ||
137 | def setup_module(mod): | |
138 | """ | |
139 | Sets up the pytest environment | |
140 | ||
141 | * `mod`: module name | |
142 | """ | |
143 | ||
144 | # Required linux kernel version for this suite to run. | |
145 | result = required_linux_kernel_version("4.16") | |
146 | if result is not True: | |
d63c7094 | 147 | pytest.skip("Kernel requirements are not met, kernel version should be >=4.16") |
b0449478 DS |
148 | |
149 | global ADDR_TYPES | |
150 | ||
151 | testsuite_run_time = time.asctime(time.localtime(time.time())) | |
152 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
153 | logger.info("=" * 40) | |
154 | ||
155 | logger.info("Running setup_module to create topology") | |
156 | ||
157 | # This function initiates the topology build with Topogen... | |
158 | json_file = "{}/bgp_gr_topojson_topo2.json".format(CWD) | |
159 | tgen = Topogen(json_file, mod.__name__) | |
160 | global topo | |
161 | topo = tgen.json_topo | |
162 | # ... and here it calls Mininet initialization functions. | |
163 | ||
164 | # Starting topology, create tmp files which are loaded to routers | |
d60a3f0e | 165 | # to start daemons and then start routers |
b0449478 DS |
166 | start_topology(tgen) |
167 | ||
168 | # Creating configuration from JSON | |
169 | build_config_from_json(tgen, topo) | |
170 | ||
171 | # Api call verify whether BGP is converged | |
172 | ADDR_TYPES = check_address_types() | |
173 | ||
174 | for addr_type in ADDR_TYPES: | |
175 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
176 | assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error:" " {}".format( | |
177 | BGP_CONVERGENCE | |
178 | ) | |
179 | ||
180 | logger.info("Running setup_module() done") | |
181 | ||
182 | ||
183 | def teardown_module(mod): | |
184 | """ | |
185 | Teardown the pytest environment | |
186 | ||
187 | * `mod`: module name | |
188 | """ | |
189 | ||
190 | logger.info("Running teardown_module to delete topology") | |
191 | ||
192 | tgen = get_topogen() | |
193 | ||
194 | # Stop toplogy and Remove tmp files | |
195 | tgen.stop_topology() | |
196 | ||
197 | logger.info( | |
198 | "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) | |
199 | ) | |
200 | logger.info("=" * 40) | |
201 | ||
202 | ||
203 | def configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut, peer): | |
204 | """ | |
205 | This function groups the repetitive function calls into one function. | |
206 | """ | |
207 | ||
208 | logger.info("configure_gr_followed_by_clear: dut %s peer %s", dut, peer) | |
209 | ||
210 | result = create_router_bgp(tgen, topo, input_dict) | |
211 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
212 | ||
213 | for addr_type in ADDR_TYPES: | |
214 | neighbor = topo["routers"][peer]["links"][dut][addr_type].split("/")[0] | |
215 | clear_bgp(tgen, addr_type, dut, neighbor=neighbor) | |
216 | ||
217 | for addr_type in ADDR_TYPES: | |
218 | neighbor = topo["routers"][dut]["links"][peer][addr_type].split("/")[0] | |
219 | clear_bgp(tgen, addr_type, peer, neighbor=neighbor) | |
220 | ||
221 | result = verify_bgp_convergence_from_running_config(tgen) | |
222 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
223 | ||
224 | return True | |
225 | ||
226 | ||
227 | def next_hop_per_address_family(tgen, dut, peer, addr_type, next_hop_dict): | |
228 | """ | |
229 | This function returns link_local or global next_hop per address-family | |
230 | """ | |
231 | ||
232 | intferface = topo["routers"][peer]["links"]["{}-link1".format(dut)]["interface"] | |
233 | if addr_type == "ipv6" and "link_local" in PREFERRED_NEXT_HOP: | |
234 | next_hop = get_frr_ipv6_linklocal(tgen, peer, intf=intferface) | |
235 | else: | |
236 | next_hop = next_hop_dict[addr_type] | |
237 | ||
238 | return next_hop | |
239 | ||
240 | ||
241 | def test_BGP_GR_TC_23_p1(request): | |
242 | """ | |
243 | Verify that helper routers are deleting stale routes after stale route | |
244 | timer's expiry. If all the routes are not received from restating node | |
245 | after restart. | |
246 | """ | |
247 | ||
248 | tgen = get_topogen() | |
249 | tc_name = request.node.name | |
250 | write_test_header(tc_name) | |
251 | ||
252 | # Check router status | |
253 | check_router_status(tgen) | |
254 | ||
255 | # Don't run this test if we have any failure. | |
256 | if tgen.routers_have_failure(): | |
257 | pytest.skip(tgen.errors) | |
258 | ||
259 | # Creating configuration from JSON | |
260 | reset_config_on_routers(tgen) | |
261 | ||
262 | logger.info( | |
263 | "Verify Stale Routes are deleted on helper: BGP_GR_TC_23 >> " | |
264 | "BGP GR [Helper Mode]R1-----R2[Restart Mode] " | |
265 | ) | |
266 | ||
267 | # Configure graceful-restart | |
268 | input_dict = { | |
269 | "r1": { | |
270 | "bgp": { | |
271 | "graceful-restart": {"timer": {"stalepath-time": GR_STALEPATH_TIMER}}, | |
272 | "address_family": { | |
273 | "ipv4": { | |
274 | "unicast": { | |
275 | "neighbor": { | |
276 | "r2": { | |
277 | "dest_link": { | |
278 | "r1": {"graceful-restart-helper": True} | |
279 | } | |
280 | } | |
281 | } | |
282 | } | |
283 | }, | |
284 | "ipv6": { | |
285 | "unicast": { | |
286 | "neighbor": { | |
287 | "r2": { | |
288 | "dest_link": { | |
289 | "r1": {"graceful-restart-helper": True} | |
290 | } | |
291 | } | |
292 | } | |
293 | } | |
294 | }, | |
295 | }, | |
296 | } | |
297 | }, | |
298 | "r2": { | |
299 | "bgp": { | |
300 | "graceful-restart": { | |
301 | "graceful-restart": True, | |
302 | "preserve-fw-state": True, | |
303 | }, | |
304 | "address_family": { | |
305 | "ipv4": { | |
306 | "unicast": { | |
307 | "neighbor": { | |
308 | "r1": {"dest_link": {"r2": {"graceful-restart": True}}} | |
309 | } | |
310 | } | |
311 | }, | |
312 | "ipv6": { | |
313 | "unicast": { | |
314 | "neighbor": { | |
315 | "r1": {"dest_link": {"r2": {"graceful-restart": True}}} | |
316 | } | |
317 | } | |
318 | }, | |
319 | }, | |
320 | } | |
321 | }, | |
322 | } | |
323 | ||
324 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
325 | ||
326 | for addr_type in ADDR_TYPES: | |
327 | result = verify_graceful_restart( | |
328 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
329 | ) | |
330 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
331 | ||
332 | # Verifying BGP RIB routes received from router R1 | |
333 | dut = "r1" | |
334 | input_dict_1 = {key: topo["routers"][key] for key in ["r2"]} | |
335 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
336 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
337 | ||
338 | # Verifying RIB routes | |
339 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
340 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
341 | ||
342 | logger.info("R2 goes for reload") | |
343 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
344 | ||
345 | # Modify configuration to delete routes and include disable-eor | |
346 | input_dict_3 = {"r2": {"bgp": {"graceful-restart": {"disable-eor": True}}}} | |
347 | ||
348 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) | |
349 | ||
350 | # Modify configuration to delete routes and include disable-eor | |
351 | network = {"ipv4": "102.0.20.1/32", "ipv6": "2::1/128"} | |
352 | for addr_type in ADDR_TYPES: | |
353 | input_dict_3 = { | |
354 | "r2": { | |
355 | "bgp": { | |
356 | "address_family": { | |
357 | addr_type: { | |
358 | "unicast": { | |
359 | "advertise_networks": [ | |
360 | { | |
361 | "network": network[addr_type], | |
362 | "no_of_network": 3, | |
363 | "delete": True, | |
364 | } | |
365 | ] | |
366 | } | |
367 | } | |
368 | } | |
369 | } | |
370 | } | |
371 | } | |
372 | ||
373 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) | |
374 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
375 | ||
376 | logger.info("BGPd comes up for r2") | |
377 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
378 | ||
379 | # Wait for stalepath timer | |
380 | logger.info("Waiting for stalepath timer({} sec..)".format(GR_STALEPATH_TIMER)) | |
381 | sleep(GR_STALEPATH_TIMER) | |
382 | ||
383 | for addr_type in ADDR_TYPES: | |
384 | clear_bgp(tgen, addr_type, "r2") | |
385 | ||
386 | # Verifying RIB routes | |
387 | dut = "r1" | |
388 | network = {"ipv4": "102.0.20.4/32", "ipv6": "2::4/128"} | |
389 | for addr_type in ADDR_TYPES: | |
390 | input_dict_1 = { | |
391 | "r1": { | |
392 | "bgp": { | |
393 | "address_family": { | |
394 | addr_type: { | |
395 | "unicast": { | |
396 | "advertise_networks": [ | |
397 | {"network": network[addr_type], "no_of_network": 2} | |
398 | ] | |
399 | } | |
400 | } | |
401 | } | |
402 | } | |
403 | } | |
404 | } | |
405 | ||
406 | # Verify EOR on helper router | |
407 | result = verify_eor( | |
408 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2", expected=False | |
409 | ) | |
d63c7094 KK |
410 | assert result is not True, ( |
411 | "Testcase {} : Failed \n " | |
412 | "Expected: EOR should not be set to True in r2\n" | |
413 | "Found: {}".format(tc_name, result) | |
b0449478 DS |
414 | ) |
415 | ||
416 | # Verifying BGP RIB routes received from router R1 | |
417 | dut = "r1" | |
418 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
419 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
420 | ||
421 | write_test_footer(tc_name) | |
422 | ||
423 | ||
424 | def test_BGP_GR_20_p1(request): | |
425 | """ | |
426 | Test Objective : Verify that GR routers delete all the routes | |
427 | received from a node if both the routers are configured as GR | |
428 | helper node | |
429 | """ | |
430 | ||
431 | tgen = get_topogen() | |
432 | tc_name = request.node.name | |
433 | write_test_header(tc_name) | |
434 | ||
435 | # Check router status | |
436 | check_router_status(tgen) | |
437 | ||
438 | # Don't run this test if we have any failure. | |
439 | if tgen.routers_have_failure(): | |
440 | pytest.skip(tgen.errors) | |
441 | ||
442 | # Creating configuration from JSON | |
443 | reset_config_on_routers(tgen) | |
444 | ||
445 | logger.info( | |
3f1f5852 | 446 | "[Step 1] : Test Setup " "[Restart Mode]R3-----R1[Restart Mode] Initialized" |
b0449478 DS |
447 | ) |
448 | ||
449 | # Configure graceful-restart | |
450 | input_dict = { | |
451 | "r1": { | |
452 | "bgp": { | |
453 | "address_family": { | |
454 | "ipv4": { | |
455 | "unicast": { | |
456 | "neighbor": { | |
457 | "r3": { | |
458 | "dest_link": { | |
459 | "r1": {"graceful-restart-helper": True} | |
460 | } | |
461 | } | |
462 | } | |
463 | } | |
464 | }, | |
465 | "ipv6": { | |
466 | "unicast": { | |
467 | "neighbor": { | |
468 | "r3": { | |
469 | "dest_link": { | |
470 | "r1": {"graceful-restart-helper": True} | |
471 | } | |
472 | } | |
473 | } | |
474 | } | |
475 | }, | |
476 | } | |
477 | } | |
478 | }, | |
479 | "r3": { | |
480 | "bgp": { | |
481 | "address_family": { | |
482 | "ipv4": { | |
483 | "unicast": { | |
484 | "neighbor": { | |
485 | "r1": { | |
486 | "dest_link": { | |
487 | "r3": {"graceful-restart-helper": True} | |
488 | } | |
489 | } | |
490 | } | |
491 | } | |
492 | }, | |
493 | "ipv6": { | |
494 | "unicast": { | |
495 | "neighbor": { | |
496 | "r1": { | |
497 | "dest_link": { | |
498 | "r3": {"graceful-restart-helper": True} | |
499 | } | |
500 | } | |
501 | } | |
502 | } | |
503 | }, | |
504 | } | |
505 | } | |
506 | }, | |
507 | } | |
508 | ||
509 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
510 | ||
511 | for addr_type in ADDR_TYPES: | |
512 | result = verify_graceful_restart( | |
513 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
514 | ) | |
515 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
516 | ||
517 | # Verifying BGP RIB routes | |
518 | dut = "r3" | |
519 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
520 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
521 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
522 | ||
523 | # Verifying RIB routes before shutting down BGPd daemon | |
524 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
525 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
526 | ||
527 | # Kill BGPd daemon on R1 | |
528 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
529 | ||
530 | for addr_type in ADDR_TYPES: | |
531 | # Verifying BGP RIB routes | |
532 | dut = "r3" | |
533 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
534 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
535 | assert result is not True, ( | |
536 | "Testcase {} : Failed \n " | |
d63c7094 KK |
537 | "Expected: Routes should not be present in {} BGP RIB \n " |
538 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 539 | ) |
b0449478 DS |
540 | |
541 | # Verifying RIB routes before shutting down BGPd daemon | |
542 | result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
543 | assert result is not True, ( | |
544 | "Testcase {} : Failed \n " | |
d63c7094 KK |
545 | "Expected: Routes should not be present in {} FIB \n " |
546 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 547 | ) |
b0449478 DS |
548 | |
549 | # Start BGPd daemon on R1 | |
550 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
551 | ||
552 | for addr_type in ADDR_TYPES: | |
553 | result = verify_bgp_convergence(tgen, topo) | |
554 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
555 | ||
556 | # Verifying BGP RIB routes | |
557 | dut = "r3" | |
558 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
559 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
560 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
561 | ||
562 | # Verifying RIB routes before shutting down BGPd daemon | |
563 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
564 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
565 | ||
566 | write_test_footer(tc_name) | |
567 | ||
568 | ||
569 | def test_BGP_GR_21_p2(request): | |
570 | """ | |
571 | Test Objective : VVerify BGP-GR feature when helper node is | |
572 | a transit router for it's eBGP peers. | |
573 | """ | |
574 | ||
575 | tgen = get_topogen() | |
576 | tc_name = request.node.name | |
577 | write_test_header(tc_name) | |
578 | ||
579 | # Check router status | |
580 | check_router_status(tgen) | |
581 | ||
582 | # Don't run this test if we have any failure. | |
583 | if tgen.routers_have_failure(): | |
584 | pytest.skip(tgen.errors) | |
585 | ||
586 | # Creating configuration from JSON | |
587 | reset_config_on_routers(tgen) | |
588 | ||
589 | logger.info( | |
3f1f5852 | 590 | "[Step 1] : Test Setup " "[Helper Mode]R6-----R1[Restart Mode] Initialized" |
b0449478 DS |
591 | ) |
592 | ||
593 | # Configure graceful-restart | |
594 | input_dict = { | |
595 | "r1": { | |
596 | "bgp": { | |
597 | "address_family": { | |
598 | "ipv4": { | |
599 | "unicast": { | |
600 | "neighbor": { | |
601 | "r6": { | |
602 | "dest_link": { | |
603 | "r1": {"graceful-restart-disable": True} | |
604 | } | |
605 | } | |
606 | } | |
607 | } | |
608 | }, | |
609 | "ipv6": { | |
610 | "unicast": { | |
611 | "neighbor": { | |
612 | "r6": { | |
613 | "dest_link": { | |
614 | "r1": {"graceful-restart-disable": True} | |
615 | } | |
616 | } | |
617 | } | |
618 | } | |
619 | }, | |
620 | } | |
621 | } | |
622 | }, | |
623 | "r6": { | |
624 | "bgp": { | |
625 | "address_family": { | |
626 | "ipv4": { | |
627 | "unicast": { | |
628 | "neighbor": { | |
629 | "r1": { | |
630 | "dest_link": { | |
631 | "r6": {"graceful-restart-helper": True} | |
632 | } | |
633 | } | |
634 | } | |
635 | } | |
636 | }, | |
637 | "ipv6": { | |
638 | "unicast": { | |
639 | "neighbor": { | |
640 | "r1": { | |
641 | "dest_link": { | |
642 | "r6": {"graceful-restart-helper": True} | |
643 | } | |
644 | } | |
645 | } | |
646 | } | |
647 | }, | |
648 | } | |
649 | } | |
650 | }, | |
651 | } | |
652 | ||
653 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r6") | |
654 | ||
655 | for addr_type in ADDR_TYPES: | |
656 | result = verify_graceful_restart( | |
657 | tgen, topo, addr_type, input_dict, dut="r1", peer="r6" | |
658 | ) | |
659 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
660 | ||
661 | logger.info( | |
662 | "[Step 2] : Test Setup " | |
663 | "[Restart Mode]R2-----[Helper Mode]R1[Disable Mode]" | |
3f1f5852 | 664 | "--------R6[Helper Mode] Initialized" |
b0449478 DS |
665 | ) |
666 | ||
667 | # Configure graceful-restart | |
668 | input_dict = { | |
669 | "r1": { | |
670 | "bgp": { | |
671 | "address_family": { | |
672 | "ipv4": { | |
673 | "unicast": { | |
674 | "neighbor": { | |
675 | "r2": { | |
676 | "dest_link": { | |
677 | "r1": {"graceful-restart-helper": True} | |
678 | } | |
679 | } | |
680 | } | |
681 | } | |
682 | }, | |
683 | "ipv6": { | |
684 | "unicast": { | |
685 | "neighbor": { | |
686 | "r2": { | |
687 | "dest_link": { | |
688 | "r1": {"graceful-restart-helper": True} | |
689 | } | |
690 | } | |
691 | } | |
692 | } | |
693 | }, | |
694 | } | |
695 | } | |
696 | }, | |
697 | "r2": { | |
698 | "bgp": { | |
699 | "graceful-restart": { | |
700 | "graceful-restart": True, | |
701 | } | |
702 | } | |
703 | }, | |
704 | } | |
705 | ||
706 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
707 | ||
708 | for addr_type in ADDR_TYPES: | |
709 | result = verify_graceful_restart( | |
710 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
711 | ) | |
712 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
713 | ||
714 | # Verifying BGP RIB routes | |
715 | dut = "r6" | |
716 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
717 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
718 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
719 | ||
720 | # Verifying RIB routes before shutting down BGPd daemon | |
721 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
722 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
723 | ||
724 | # Verifying BGP RIB routes | |
725 | dut = "r6" | |
726 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
727 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
728 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
729 | ||
730 | # Verifying RIB routes before shutting down BGPd daemon | |
731 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
732 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
733 | ||
734 | # Kill BGPd daemon on R1 | |
735 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
736 | ||
737 | for addr_type in ADDR_TYPES: | |
738 | # Verifying BGP RIB routes | |
739 | dut = "r6" | |
740 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
741 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
742 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
743 | ||
744 | # Verifying RIB routes before shutting down BGPd daemon | |
745 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
746 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
747 | ||
748 | # Verifying BGP RIB routes | |
749 | dut = "r6" | |
750 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
751 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
752 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
753 | ||
754 | # Verifying RIB routes before shutting down BGPd daemon | |
755 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
756 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
757 | ||
758 | # Start BGPd daemon on R1 | |
759 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
760 | ||
761 | for addr_type in ADDR_TYPES: | |
762 | result = verify_bgp_convergence(tgen, topo) | |
763 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
764 | ||
765 | # Verifying BGP RIB routes | |
766 | dut = "r6" | |
767 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
768 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
769 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
770 | ||
771 | # Verifying RIB routes after bringing up BGPd daemon | |
772 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
773 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
774 | ||
775 | # Verifying BGP RIB routes | |
776 | dut = "r6" | |
777 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
778 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
779 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
780 | ||
781 | # Verifying RIB routes before shutting down BGPd daemon | |
782 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
783 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
784 | ||
785 | write_test_footer(tc_name) | |
786 | ||
787 | ||
788 | def test_BGP_GR_22_p2(request): | |
789 | """ | |
790 | Test Objective : Verify BGP-GR feature when helper node | |
791 | is a transit router for it's iBGP peers. | |
792 | """ | |
793 | ||
794 | tgen = get_topogen() | |
795 | tc_name = request.node.name | |
796 | write_test_header(tc_name) | |
797 | ||
798 | # Check router status | |
799 | check_router_status(tgen) | |
800 | ||
801 | # Don't run this test if we have any failure. | |
802 | if tgen.routers_have_failure(): | |
803 | pytest.skip(tgen.errors) | |
804 | ||
805 | # Creating configuration from JSON | |
806 | reset_config_on_routers(tgen) | |
807 | ||
808 | logger.info( | |
3f1f5852 | 809 | "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] Initialized" |
b0449478 DS |
810 | ) |
811 | ||
812 | # Configure graceful-restart | |
813 | input_dict = { | |
814 | "r1": { | |
815 | "bgp": { | |
816 | "address_family": { | |
817 | "ipv4": { | |
818 | "unicast": { | |
819 | "neighbor": { | |
820 | "r3": { | |
821 | "dest_link": { | |
822 | "r1": { | |
823 | "graceful-restart-disable": True, | |
824 | "next_hop_self": True, | |
825 | } | |
826 | } | |
827 | } | |
828 | } | |
829 | } | |
830 | }, | |
831 | "ipv6": { | |
832 | "unicast": { | |
833 | "neighbor": { | |
834 | "r3": { | |
835 | "dest_link": { | |
836 | "r1": { | |
837 | "graceful-restart-disable": True, | |
838 | "next_hop_self": True, | |
839 | } | |
840 | } | |
841 | } | |
842 | } | |
843 | } | |
844 | }, | |
845 | } | |
846 | } | |
847 | }, | |
848 | "r3": { | |
849 | "bgp": { | |
850 | "address_family": { | |
851 | "ipv4": { | |
852 | "unicast": { | |
853 | "neighbor": { | |
854 | "r1": { | |
855 | "dest_link": { | |
856 | "r3": {"graceful-restart-helper": True} | |
857 | } | |
858 | } | |
859 | } | |
860 | } | |
861 | }, | |
862 | "ipv6": { | |
863 | "unicast": { | |
864 | "neighbor": { | |
865 | "r1": { | |
866 | "dest_link": { | |
867 | "r3": {"graceful-restart-helper": True} | |
868 | } | |
869 | } | |
870 | } | |
871 | } | |
872 | }, | |
873 | } | |
874 | } | |
875 | }, | |
876 | } | |
877 | ||
878 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
879 | ||
880 | for addr_type in ADDR_TYPES: | |
881 | result = verify_graceful_restart( | |
882 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
883 | ) | |
884 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
885 | ||
886 | logger.info( | |
887 | "[Step 2] : Test Setup " | |
888 | "[Restart Mode]R2-----[Helper Mode]R1[Disable Mode]" | |
3f1f5852 | 889 | "--------R3[Helper Mode] Initialized" |
b0449478 DS |
890 | ) |
891 | ||
892 | # Configure graceful-restart | |
893 | input_dict = { | |
894 | "r1": { | |
895 | "bgp": { | |
896 | "address_family": { | |
897 | "ipv4": { | |
898 | "unicast": { | |
899 | "neighbor": { | |
900 | "r2": { | |
901 | "dest_link": { | |
902 | "r1": {"graceful-restart-helper": True} | |
903 | } | |
904 | } | |
905 | } | |
906 | } | |
907 | }, | |
908 | "ipv6": { | |
909 | "unicast": { | |
910 | "neighbor": { | |
911 | "r2": { | |
912 | "dest_link": { | |
913 | "r1": {"graceful-restart-helper": True} | |
914 | } | |
915 | } | |
916 | } | |
917 | } | |
918 | }, | |
919 | } | |
920 | } | |
921 | }, | |
922 | "r2": {"bgp": {"graceful-restart": {"graceful-restart": True}}}, | |
923 | } | |
924 | ||
925 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
926 | ||
927 | for addr_type in ADDR_TYPES: | |
928 | result = verify_graceful_restart( | |
929 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
930 | ) | |
931 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
932 | ||
933 | # Verifying BGP RIB routes | |
934 | dut = "r3" | |
935 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
936 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
937 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
938 | ||
939 | # Verifying RIB routes before shutting down BGPd daemon | |
940 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
941 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
942 | ||
943 | # Verifying BGP RIB routes | |
944 | dut = "r3" | |
945 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
946 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
947 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
948 | ||
949 | # Verifying RIB routes before shutting down BGPd daemon | |
950 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
951 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
952 | ||
953 | # Kill BGPd daemon on R1 | |
954 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
955 | ||
956 | for addr_type in ADDR_TYPES: | |
957 | # Verifying BGP RIB routes | |
958 | dut = "r3" | |
959 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
960 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
961 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
962 | ||
963 | # Verifying RIB routes before shutting down BGPd daemon | |
964 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
965 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
966 | ||
967 | # Verifying BGP RIB routes | |
968 | dut = "r3" | |
969 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
970 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
971 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
972 | ||
973 | # Verifying RIB routes before shutting down BGPd daemon | |
974 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
975 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
976 | ||
977 | # Start BGPd daemon on R1 | |
978 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
979 | ||
980 | for addr_type in ADDR_TYPES: | |
981 | result = verify_bgp_convergence(tgen, topo) | |
982 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
983 | ||
984 | # Verifying BGP RIB routes | |
985 | dut = "r3" | |
986 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
987 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
988 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
989 | ||
990 | # Verifying RIB routes before shutting down BGPd daemon | |
991 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
992 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
993 | ||
994 | # Verifying BGP RIB routes | |
995 | dut = "r3" | |
996 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
997 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
998 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
999 | ||
1000 | # Verifying RIB routes before shutting down BGPd daemon | |
1001 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
1002 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
1003 | ||
1004 | write_test_footer(tc_name) | |
1005 | ||
1006 | ||
1007 | if __name__ == "__main__": | |
1008 | args = ["-s"] + sys.argv[1:] | |
1009 | sys.exit(pytest.main(args)) |