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1 | #!/usr/bin/env python |
2 | # | |
3 | # Copyright (c) 2019 by VMware, Inc. ("VMware") | |
4 | # Used Copyright (c) 2018 by Network Device Education Foundation, Inc. ("NetDEF") | |
5 | # 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 | Following tests are covered to test BGP Graceful Restart functionality. | |
24 | Basic Common Test steps for all the test case below : | |
25 | - Create topology (setup module) | |
26 | Creating 7 routers topology | |
27 | - Bring up topology | |
28 | - Verify for bgp to converge | |
29 | - Configure BGP Graceful Restart on both the routers. | |
30 | ||
31 | TC_1_2: | |
32 | Verify that EOR message is sent out only after initial convergence | |
33 | Verify whether EOR message is received from all the peers after restart | |
34 | TC_3: | |
35 | Verify the selection deferral timer functionality when EOR is not sent | |
36 | by the helper router | |
37 | TC_11: | |
38 | Verify that selection-deferral timer sets the maximum time to | |
39 | avoid deadlock during which the best-path | |
40 | TC_10: | |
41 | Test Objective : Test GR scenarios on helper router by enabling | |
42 | Graceful Restart for multiple address families. | |
43 | TC_15: | |
44 | Test Objective : Test GR scenarios by enabling Graceful Restart | |
45 | for multiple address families.. | |
46 | TC_16: | |
47 | Test Objective : Verify BGP-GR feature when restarting node | |
48 | is a transit router for it's iBGP peers. | |
49 | TC_18: | |
50 | Test Objective : Verify that GR helper router deletes stale routes | |
51 | received from restarting node, if GR capability is not present in | |
52 | TC_19: | |
53 | Test Objective : Verify that GR routers keeps all the routes | |
54 | received from restarting node if both the routers are | |
55 | TC_26: | |
56 | Test Objective : Test GR scenarios on helper router by enabling | |
57 | Graceful Restart for multiple address families. | |
58 | TC_28: | |
59 | Test Objective : Verify if helper node goes down before restarting | |
60 | node comes up online, helper node sets the R-bit to avoid dead-lock | |
61 | TC_29: | |
62 | Test Objective : Change timers on the fly, and | |
63 | verify if it takes immediate effect. | |
64 | TC_33: | |
65 | Test Objective : Helper router receives same prefixes from two | |
66 | different routers (GR-restarting and GR-disabled). Keeps the | |
67 | TC_34_1: | |
68 | Test Objective : Restarting node doesn't preserve forwarding | |
69 | state, helper router should not keep the stale entries. | |
70 | TC_34_2: | |
71 | Test Objective : Restarting node doesn't preserve the forwarding | |
72 | state verify the behaviour on helper node, if it still keeps the | |
73 | TC_32: | |
74 | Test Objective : Restarting node is connected to multiple helper | |
75 | nodes, one of them doesn't send EOR to restarting router. Verify | |
76 | TC_37: | |
77 | Test Objective : Verify if helper node restarts before sending the | |
78 | EOR message, restarting node doesn't wait until stale path timer | |
79 | TC_30: | |
80 | Test Objective : Restarting node removes stale routes from Zebra | |
81 | after receiving an EOR from helper router. | |
82 | ||
83 | These tests have been broken up into 4 sub python scripts because | |
84 | the totality of run time for this script was greater than 10 minutes | |
85 | """ | |
86 | ||
87 | import os | |
88 | import sys | |
89 | import time | |
90 | import pytest | |
91 | from time import sleep | |
92 | ||
93 | # Save the Current Working Directory to find configuration files. | |
94 | CWD = os.path.dirname(os.path.realpath(__file__)) | |
95 | sys.path.append(os.path.join("../")) | |
96 | sys.path.append(os.path.join("../lib/")) | |
97 | ||
98 | # pylint: disable=C0413 | |
99 | # Import topogen and topotest helpers | |
100 | from lib.topogen import Topogen, get_topogen | |
101 | from lib.topolog import logger | |
102 | ||
103 | # Required to instantiate the topology builder class. | |
104 | ||
105 | # Import topoJson from lib, to create topology and initial configuration | |
106 | from lib.topojson import build_config_from_json | |
107 | from lib.bgp import ( | |
108 | clear_bgp, | |
109 | verify_bgp_rib, | |
110 | verify_graceful_restart, | |
111 | create_router_bgp, | |
112 | verify_r_bit, | |
113 | verify_eor, | |
114 | verify_f_bit, | |
115 | verify_bgp_convergence, | |
116 | verify_gr_address_family, | |
117 | modify_bgp_config_when_bgpd_down, | |
118 | verify_graceful_restart_timers, | |
119 | verify_bgp_convergence_from_running_config, | |
120 | ) | |
121 | ||
122 | from lib.common_config import ( | |
123 | write_test_header, | |
124 | reset_config_on_routers, | |
125 | start_topology, | |
126 | kill_router_daemons, | |
127 | start_router_daemons, | |
128 | verify_rib, | |
129 | check_address_types, | |
130 | write_test_footer, | |
131 | check_router_status, | |
132 | step, | |
133 | get_frr_ipv6_linklocal, | |
134 | required_linux_kernel_version, | |
135 | ) | |
136 | ||
137 | pytestmark = [pytest.mark.bgpd] | |
138 | ||
139 | ||
140 | # Global variables | |
141 | BGP_CONVERGENCE = False | |
142 | GR_RESTART_TIMER = 5 | |
143 | GR_SELECT_DEFER_TIMER = 5 | |
144 | GR_STALEPATH_TIMER = 5 | |
145 | PREFERRED_NEXT_HOP = "link_local" | |
146 | NEXT_HOP_4 = ["192.168.1.1", "192.168.4.2"] | |
147 | NEXT_HOP_6 = ["fd00:0:0:1::1", "fd00:0:0:4::2"] | |
148 | ||
149 | ||
150 | def setup_module(mod): | |
151 | """ | |
152 | Sets up the pytest environment | |
153 | ||
154 | * `mod`: module name | |
155 | """ | |
156 | ||
157 | # Required linux kernel version for this suite to run. | |
158 | result = required_linux_kernel_version("4.16") | |
159 | if result is not True: | |
d63c7094 | 160 | pytest.skip("Kernel requirements are not met, kernel version should be >=4.16") |
b0449478 DS |
161 | |
162 | global ADDR_TYPES | |
163 | ||
164 | testsuite_run_time = time.asctime(time.localtime(time.time())) | |
165 | logger.info("Testsuite start time: {}".format(testsuite_run_time)) | |
166 | logger.info("=" * 40) | |
167 | ||
168 | logger.info("Running setup_module to create topology") | |
169 | ||
170 | # This function initiates the topology build with Topogen... | |
171 | json_file = "{}/bgp_gr_topojson_topo2.json".format(CWD) | |
172 | tgen = Topogen(json_file, mod.__name__) | |
173 | global topo | |
174 | topo = tgen.json_topo | |
175 | # ... and here it calls Mininet initialization functions. | |
176 | ||
177 | # Starting topology, create tmp files which are loaded to routers | |
d60a3f0e | 178 | # to start daemons and then start routers |
b0449478 DS |
179 | start_topology(tgen) |
180 | ||
181 | # Creating configuration from JSON | |
182 | build_config_from_json(tgen, topo) | |
183 | ||
184 | # Api call verify whether BGP is converged | |
185 | ADDR_TYPES = check_address_types() | |
186 | ||
187 | for addr_type in ADDR_TYPES: | |
188 | BGP_CONVERGENCE = verify_bgp_convergence(tgen, topo) | |
189 | assert BGP_CONVERGENCE is True, "setup_module : Failed \n Error:" " {}".format( | |
190 | BGP_CONVERGENCE | |
191 | ) | |
192 | ||
193 | logger.info("Running setup_module() done") | |
194 | ||
195 | ||
196 | def teardown_module(mod): | |
197 | """ | |
198 | Teardown the pytest environment | |
199 | ||
200 | * `mod`: module name | |
201 | """ | |
202 | ||
203 | logger.info("Running teardown_module to delete topology") | |
204 | ||
205 | tgen = get_topogen() | |
206 | ||
207 | # Stop toplogy and Remove tmp files | |
208 | tgen.stop_topology() | |
209 | ||
210 | logger.info( | |
211 | "Testsuite end time: {}".format(time.asctime(time.localtime(time.time()))) | |
212 | ) | |
213 | logger.info("=" * 40) | |
214 | ||
215 | ||
216 | def configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut, peer): | |
217 | """ | |
218 | This function groups the repetitive function calls into one function. | |
219 | """ | |
220 | ||
221 | logger.info("configure_gr_followed_by_clear: dut %s peer %s", dut, peer) | |
222 | ||
223 | result = create_router_bgp(tgen, topo, input_dict) | |
224 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
225 | ||
226 | for addr_type in ADDR_TYPES: | |
227 | neighbor = topo["routers"][peer]["links"][dut][addr_type].split("/")[0] | |
228 | clear_bgp(tgen, addr_type, dut, neighbor=neighbor) | |
229 | ||
230 | for addr_type in ADDR_TYPES: | |
231 | neighbor = topo["routers"][dut]["links"][peer][addr_type].split("/")[0] | |
232 | clear_bgp(tgen, addr_type, peer, neighbor=neighbor) | |
233 | ||
234 | result = verify_bgp_convergence_from_running_config(tgen) | |
235 | assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result) | |
236 | ||
237 | return True | |
238 | ||
239 | ||
240 | def next_hop_per_address_family(tgen, dut, peer, addr_type, next_hop_dict): | |
241 | """ | |
242 | This function returns link_local or global next_hop per address-family | |
243 | """ | |
244 | ||
245 | intferface = topo["routers"][peer]["links"]["{}-link1".format(dut)]["interface"] | |
246 | if addr_type == "ipv6" and "link_local" in PREFERRED_NEXT_HOP: | |
247 | next_hop = get_frr_ipv6_linklocal(tgen, peer, intf=intferface) | |
248 | else: | |
249 | next_hop = next_hop_dict[addr_type] | |
250 | ||
251 | return next_hop | |
252 | ||
253 | ||
254 | def test_BGP_GR_TC_23_p1(request): | |
255 | """ | |
256 | Verify that helper routers are deleting stale routes after stale route | |
257 | timer's expiry. If all the routes are not received from restating node | |
258 | after restart. | |
259 | """ | |
260 | ||
261 | tgen = get_topogen() | |
262 | tc_name = request.node.name | |
263 | write_test_header(tc_name) | |
264 | ||
265 | # Check router status | |
266 | check_router_status(tgen) | |
267 | ||
268 | # Don't run this test if we have any failure. | |
269 | if tgen.routers_have_failure(): | |
270 | pytest.skip(tgen.errors) | |
271 | ||
272 | # Creating configuration from JSON | |
273 | reset_config_on_routers(tgen) | |
274 | ||
275 | logger.info( | |
276 | "Verify Stale Routes are deleted on helper: BGP_GR_TC_23 >> " | |
277 | "BGP GR [Helper Mode]R1-----R2[Restart Mode] " | |
278 | ) | |
279 | ||
280 | # Configure graceful-restart | |
281 | input_dict = { | |
282 | "r1": { | |
283 | "bgp": { | |
284 | "graceful-restart": {"timer": {"stalepath-time": GR_STALEPATH_TIMER}}, | |
285 | "address_family": { | |
286 | "ipv4": { | |
287 | "unicast": { | |
288 | "neighbor": { | |
289 | "r2": { | |
290 | "dest_link": { | |
291 | "r1": {"graceful-restart-helper": True} | |
292 | } | |
293 | } | |
294 | } | |
295 | } | |
296 | }, | |
297 | "ipv6": { | |
298 | "unicast": { | |
299 | "neighbor": { | |
300 | "r2": { | |
301 | "dest_link": { | |
302 | "r1": {"graceful-restart-helper": True} | |
303 | } | |
304 | } | |
305 | } | |
306 | } | |
307 | }, | |
308 | }, | |
309 | } | |
310 | }, | |
311 | "r2": { | |
312 | "bgp": { | |
313 | "graceful-restart": { | |
314 | "graceful-restart": True, | |
315 | "preserve-fw-state": True, | |
316 | }, | |
317 | "address_family": { | |
318 | "ipv4": { | |
319 | "unicast": { | |
320 | "neighbor": { | |
321 | "r1": {"dest_link": {"r2": {"graceful-restart": True}}} | |
322 | } | |
323 | } | |
324 | }, | |
325 | "ipv6": { | |
326 | "unicast": { | |
327 | "neighbor": { | |
328 | "r1": {"dest_link": {"r2": {"graceful-restart": True}}} | |
329 | } | |
330 | } | |
331 | }, | |
332 | }, | |
333 | } | |
334 | }, | |
335 | } | |
336 | ||
337 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
338 | ||
339 | for addr_type in ADDR_TYPES: | |
340 | result = verify_graceful_restart( | |
341 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
342 | ) | |
343 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
344 | ||
345 | # Verifying BGP RIB routes received from router R1 | |
346 | dut = "r1" | |
347 | input_dict_1 = {key: topo["routers"][key] for key in ["r2"]} | |
348 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
349 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
350 | ||
351 | # Verifying RIB routes | |
352 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
353 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
354 | ||
355 | logger.info("R2 goes for reload") | |
356 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
357 | ||
358 | # Modify configuration to delete routes and include disable-eor | |
359 | input_dict_3 = {"r2": {"bgp": {"graceful-restart": {"disable-eor": True}}}} | |
360 | ||
361 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) | |
362 | ||
363 | # Modify configuration to delete routes and include disable-eor | |
364 | network = {"ipv4": "102.0.20.1/32", "ipv6": "2::1/128"} | |
365 | for addr_type in ADDR_TYPES: | |
366 | input_dict_3 = { | |
367 | "r2": { | |
368 | "bgp": { | |
369 | "address_family": { | |
370 | addr_type: { | |
371 | "unicast": { | |
372 | "advertise_networks": [ | |
373 | { | |
374 | "network": network[addr_type], | |
375 | "no_of_network": 3, | |
376 | "delete": True, | |
377 | } | |
378 | ] | |
379 | } | |
380 | } | |
381 | } | |
382 | } | |
383 | } | |
384 | } | |
385 | ||
386 | result = modify_bgp_config_when_bgpd_down(tgen, topo, input_dict_3) | |
387 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
388 | ||
389 | logger.info("BGPd comes up for r2") | |
390 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
391 | ||
392 | # Wait for stalepath timer | |
393 | logger.info("Waiting for stalepath timer({} sec..)".format(GR_STALEPATH_TIMER)) | |
394 | sleep(GR_STALEPATH_TIMER) | |
395 | ||
396 | for addr_type in ADDR_TYPES: | |
397 | clear_bgp(tgen, addr_type, "r2") | |
398 | ||
399 | # Verifying RIB routes | |
400 | dut = "r1" | |
401 | network = {"ipv4": "102.0.20.4/32", "ipv6": "2::4/128"} | |
402 | for addr_type in ADDR_TYPES: | |
403 | input_dict_1 = { | |
404 | "r1": { | |
405 | "bgp": { | |
406 | "address_family": { | |
407 | addr_type: { | |
408 | "unicast": { | |
409 | "advertise_networks": [ | |
410 | {"network": network[addr_type], "no_of_network": 2} | |
411 | ] | |
412 | } | |
413 | } | |
414 | } | |
415 | } | |
416 | } | |
417 | } | |
418 | ||
419 | # Verify EOR on helper router | |
420 | result = verify_eor( | |
421 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2", expected=False | |
422 | ) | |
d63c7094 KK |
423 | assert result is not True, ( |
424 | "Testcase {} : Failed \n " | |
425 | "Expected: EOR should not be set to True in r2\n" | |
426 | "Found: {}".format(tc_name, result) | |
b0449478 DS |
427 | ) |
428 | ||
429 | # Verifying BGP RIB routes received from router R1 | |
430 | dut = "r1" | |
431 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
432 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
433 | ||
434 | write_test_footer(tc_name) | |
435 | ||
436 | ||
437 | def test_BGP_GR_20_p1(request): | |
438 | """ | |
439 | Test Objective : Verify that GR routers delete all the routes | |
440 | received from a node if both the routers are configured as GR | |
441 | helper node | |
442 | """ | |
443 | ||
444 | tgen = get_topogen() | |
445 | tc_name = request.node.name | |
446 | write_test_header(tc_name) | |
447 | ||
448 | # Check router status | |
449 | check_router_status(tgen) | |
450 | ||
451 | # Don't run this test if we have any failure. | |
452 | if tgen.routers_have_failure(): | |
453 | pytest.skip(tgen.errors) | |
454 | ||
455 | # Creating configuration from JSON | |
456 | reset_config_on_routers(tgen) | |
457 | ||
458 | logger.info( | |
3f1f5852 | 459 | "[Step 1] : Test Setup " "[Restart Mode]R3-----R1[Restart Mode] Initialized" |
b0449478 DS |
460 | ) |
461 | ||
462 | # Configure graceful-restart | |
463 | input_dict = { | |
464 | "r1": { | |
465 | "bgp": { | |
466 | "address_family": { | |
467 | "ipv4": { | |
468 | "unicast": { | |
469 | "neighbor": { | |
470 | "r3": { | |
471 | "dest_link": { | |
472 | "r1": {"graceful-restart-helper": True} | |
473 | } | |
474 | } | |
475 | } | |
476 | } | |
477 | }, | |
478 | "ipv6": { | |
479 | "unicast": { | |
480 | "neighbor": { | |
481 | "r3": { | |
482 | "dest_link": { | |
483 | "r1": {"graceful-restart-helper": True} | |
484 | } | |
485 | } | |
486 | } | |
487 | } | |
488 | }, | |
489 | } | |
490 | } | |
491 | }, | |
492 | "r3": { | |
493 | "bgp": { | |
494 | "address_family": { | |
495 | "ipv4": { | |
496 | "unicast": { | |
497 | "neighbor": { | |
498 | "r1": { | |
499 | "dest_link": { | |
500 | "r3": {"graceful-restart-helper": True} | |
501 | } | |
502 | } | |
503 | } | |
504 | } | |
505 | }, | |
506 | "ipv6": { | |
507 | "unicast": { | |
508 | "neighbor": { | |
509 | "r1": { | |
510 | "dest_link": { | |
511 | "r3": {"graceful-restart-helper": True} | |
512 | } | |
513 | } | |
514 | } | |
515 | } | |
516 | }, | |
517 | } | |
518 | } | |
519 | }, | |
520 | } | |
521 | ||
522 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
523 | ||
524 | for addr_type in ADDR_TYPES: | |
525 | result = verify_graceful_restart( | |
526 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
527 | ) | |
528 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
529 | ||
530 | # Verifying BGP RIB routes | |
531 | dut = "r3" | |
532 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
533 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
534 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
535 | ||
536 | # Verifying RIB routes before shutting down BGPd daemon | |
537 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
538 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
539 | ||
540 | # Kill BGPd daemon on R1 | |
541 | kill_router_daemons(tgen, "r1", ["bgpd"]) | |
542 | ||
543 | for addr_type in ADDR_TYPES: | |
544 | # Verifying BGP RIB routes | |
545 | dut = "r3" | |
546 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
547 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
548 | assert result is not True, ( | |
549 | "Testcase {} : Failed \n " | |
d63c7094 KK |
550 | "Expected: Routes should not be present in {} BGP RIB \n " |
551 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 552 | ) |
b0449478 DS |
553 | |
554 | # Verifying RIB routes before shutting down BGPd daemon | |
555 | result = verify_rib(tgen, addr_type, dut, input_dict_1, expected=False) | |
556 | assert result is not True, ( | |
557 | "Testcase {} : Failed \n " | |
d63c7094 KK |
558 | "Expected: Routes should not be present in {} FIB \n " |
559 | "Found: {}".format(tc_name, dut, result) | |
b0449478 | 560 | ) |
b0449478 DS |
561 | |
562 | # Start BGPd daemon on R1 | |
563 | start_router_daemons(tgen, "r1", ["bgpd"]) | |
564 | ||
565 | for addr_type in ADDR_TYPES: | |
566 | result = verify_bgp_convergence(tgen, topo) | |
567 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
568 | ||
569 | # Verifying BGP RIB routes | |
570 | dut = "r3" | |
571 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
572 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
573 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
574 | ||
575 | # Verifying RIB routes before shutting down BGPd daemon | |
576 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
577 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
578 | ||
579 | write_test_footer(tc_name) | |
580 | ||
581 | ||
582 | def test_BGP_GR_21_p2(request): | |
583 | """ | |
584 | Test Objective : VVerify BGP-GR feature when helper node is | |
585 | a transit router for it's eBGP peers. | |
586 | """ | |
587 | ||
588 | tgen = get_topogen() | |
589 | tc_name = request.node.name | |
590 | write_test_header(tc_name) | |
591 | ||
592 | # Check router status | |
593 | check_router_status(tgen) | |
594 | ||
595 | # Don't run this test if we have any failure. | |
596 | if tgen.routers_have_failure(): | |
597 | pytest.skip(tgen.errors) | |
598 | ||
599 | # Creating configuration from JSON | |
600 | reset_config_on_routers(tgen) | |
601 | ||
602 | logger.info( | |
3f1f5852 | 603 | "[Step 1] : Test Setup " "[Helper Mode]R6-----R1[Restart Mode] Initialized" |
b0449478 DS |
604 | ) |
605 | ||
606 | # Configure graceful-restart | |
607 | input_dict = { | |
608 | "r1": { | |
609 | "bgp": { | |
610 | "address_family": { | |
611 | "ipv4": { | |
612 | "unicast": { | |
613 | "neighbor": { | |
614 | "r6": { | |
615 | "dest_link": { | |
616 | "r1": {"graceful-restart-disable": True} | |
617 | } | |
618 | } | |
619 | } | |
620 | } | |
621 | }, | |
622 | "ipv6": { | |
623 | "unicast": { | |
624 | "neighbor": { | |
625 | "r6": { | |
626 | "dest_link": { | |
627 | "r1": {"graceful-restart-disable": True} | |
628 | } | |
629 | } | |
630 | } | |
631 | } | |
632 | }, | |
633 | } | |
634 | } | |
635 | }, | |
636 | "r6": { | |
637 | "bgp": { | |
638 | "address_family": { | |
639 | "ipv4": { | |
640 | "unicast": { | |
641 | "neighbor": { | |
642 | "r1": { | |
643 | "dest_link": { | |
644 | "r6": {"graceful-restart-helper": True} | |
645 | } | |
646 | } | |
647 | } | |
648 | } | |
649 | }, | |
650 | "ipv6": { | |
651 | "unicast": { | |
652 | "neighbor": { | |
653 | "r1": { | |
654 | "dest_link": { | |
655 | "r6": {"graceful-restart-helper": True} | |
656 | } | |
657 | } | |
658 | } | |
659 | } | |
660 | }, | |
661 | } | |
662 | } | |
663 | }, | |
664 | } | |
665 | ||
666 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r6") | |
667 | ||
668 | for addr_type in ADDR_TYPES: | |
669 | result = verify_graceful_restart( | |
670 | tgen, topo, addr_type, input_dict, dut="r1", peer="r6" | |
671 | ) | |
672 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
673 | ||
674 | logger.info( | |
675 | "[Step 2] : Test Setup " | |
676 | "[Restart Mode]R2-----[Helper Mode]R1[Disable Mode]" | |
3f1f5852 | 677 | "--------R6[Helper Mode] Initialized" |
b0449478 DS |
678 | ) |
679 | ||
680 | # Configure graceful-restart | |
681 | input_dict = { | |
682 | "r1": { | |
683 | "bgp": { | |
684 | "address_family": { | |
685 | "ipv4": { | |
686 | "unicast": { | |
687 | "neighbor": { | |
688 | "r2": { | |
689 | "dest_link": { | |
690 | "r1": {"graceful-restart-helper": True} | |
691 | } | |
692 | } | |
693 | } | |
694 | } | |
695 | }, | |
696 | "ipv6": { | |
697 | "unicast": { | |
698 | "neighbor": { | |
699 | "r2": { | |
700 | "dest_link": { | |
701 | "r1": {"graceful-restart-helper": True} | |
702 | } | |
703 | } | |
704 | } | |
705 | } | |
706 | }, | |
707 | } | |
708 | } | |
709 | }, | |
710 | "r2": { | |
711 | "bgp": { | |
712 | "graceful-restart": { | |
713 | "graceful-restart": True, | |
714 | } | |
715 | } | |
716 | }, | |
717 | } | |
718 | ||
719 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
720 | ||
721 | for addr_type in ADDR_TYPES: | |
722 | result = verify_graceful_restart( | |
723 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
724 | ) | |
725 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
726 | ||
727 | # Verifying BGP RIB routes | |
728 | dut = "r6" | |
729 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
730 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
731 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
732 | ||
733 | # Verifying RIB routes before shutting down BGPd daemon | |
734 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
735 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
736 | ||
737 | # Verifying BGP RIB routes | |
738 | dut = "r6" | |
739 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
740 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
741 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
742 | ||
743 | # Verifying RIB routes before shutting down BGPd daemon | |
744 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
745 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
746 | ||
747 | # Kill BGPd daemon on R1 | |
748 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
749 | ||
750 | for addr_type in ADDR_TYPES: | |
751 | # Verifying BGP RIB routes | |
752 | dut = "r6" | |
753 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
754 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
755 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
756 | ||
757 | # Verifying RIB routes before shutting down BGPd daemon | |
758 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
759 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
760 | ||
761 | # Verifying BGP RIB routes | |
762 | dut = "r6" | |
763 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
764 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
765 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
766 | ||
767 | # Verifying RIB routes before shutting down BGPd daemon | |
768 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
769 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
770 | ||
771 | # Start BGPd daemon on R1 | |
772 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
773 | ||
774 | for addr_type in ADDR_TYPES: | |
775 | result = verify_bgp_convergence(tgen, topo) | |
776 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
777 | ||
778 | # Verifying BGP RIB routes | |
779 | dut = "r6" | |
780 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
781 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
782 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
783 | ||
784 | # Verifying RIB routes after bringing up BGPd daemon | |
785 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
786 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
787 | ||
788 | # Verifying BGP RIB routes | |
789 | dut = "r6" | |
790 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
791 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
792 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
793 | ||
794 | # Verifying RIB routes before shutting down BGPd daemon | |
795 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
796 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
797 | ||
798 | write_test_footer(tc_name) | |
799 | ||
800 | ||
801 | def test_BGP_GR_22_p2(request): | |
802 | """ | |
803 | Test Objective : Verify BGP-GR feature when helper node | |
804 | is a transit router for it's iBGP peers. | |
805 | """ | |
806 | ||
807 | tgen = get_topogen() | |
808 | tc_name = request.node.name | |
809 | write_test_header(tc_name) | |
810 | ||
811 | # Check router status | |
812 | check_router_status(tgen) | |
813 | ||
814 | # Don't run this test if we have any failure. | |
815 | if tgen.routers_have_failure(): | |
816 | pytest.skip(tgen.errors) | |
817 | ||
818 | # Creating configuration from JSON | |
819 | reset_config_on_routers(tgen) | |
820 | ||
821 | logger.info( | |
3f1f5852 | 822 | "[Step 1] : Test Setup " "[Helper Mode]R3-----R1[Restart Mode] Initialized" |
b0449478 DS |
823 | ) |
824 | ||
825 | # Configure graceful-restart | |
826 | input_dict = { | |
827 | "r1": { | |
828 | "bgp": { | |
829 | "address_family": { | |
830 | "ipv4": { | |
831 | "unicast": { | |
832 | "neighbor": { | |
833 | "r3": { | |
834 | "dest_link": { | |
835 | "r1": { | |
836 | "graceful-restart-disable": True, | |
837 | "next_hop_self": True, | |
838 | } | |
839 | } | |
840 | } | |
841 | } | |
842 | } | |
843 | }, | |
844 | "ipv6": { | |
845 | "unicast": { | |
846 | "neighbor": { | |
847 | "r3": { | |
848 | "dest_link": { | |
849 | "r1": { | |
850 | "graceful-restart-disable": True, | |
851 | "next_hop_self": True, | |
852 | } | |
853 | } | |
854 | } | |
855 | } | |
856 | } | |
857 | }, | |
858 | } | |
859 | } | |
860 | }, | |
861 | "r3": { | |
862 | "bgp": { | |
863 | "address_family": { | |
864 | "ipv4": { | |
865 | "unicast": { | |
866 | "neighbor": { | |
867 | "r1": { | |
868 | "dest_link": { | |
869 | "r3": {"graceful-restart-helper": True} | |
870 | } | |
871 | } | |
872 | } | |
873 | } | |
874 | }, | |
875 | "ipv6": { | |
876 | "unicast": { | |
877 | "neighbor": { | |
878 | "r1": { | |
879 | "dest_link": { | |
880 | "r3": {"graceful-restart-helper": True} | |
881 | } | |
882 | } | |
883 | } | |
884 | } | |
885 | }, | |
886 | } | |
887 | } | |
888 | }, | |
889 | } | |
890 | ||
891 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r3") | |
892 | ||
893 | for addr_type in ADDR_TYPES: | |
894 | result = verify_graceful_restart( | |
895 | tgen, topo, addr_type, input_dict, dut="r1", peer="r3" | |
896 | ) | |
897 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
898 | ||
899 | logger.info( | |
900 | "[Step 2] : Test Setup " | |
901 | "[Restart Mode]R2-----[Helper Mode]R1[Disable Mode]" | |
3f1f5852 | 902 | "--------R3[Helper Mode] Initialized" |
b0449478 DS |
903 | ) |
904 | ||
905 | # Configure graceful-restart | |
906 | input_dict = { | |
907 | "r1": { | |
908 | "bgp": { | |
909 | "address_family": { | |
910 | "ipv4": { | |
911 | "unicast": { | |
912 | "neighbor": { | |
913 | "r2": { | |
914 | "dest_link": { | |
915 | "r1": {"graceful-restart-helper": True} | |
916 | } | |
917 | } | |
918 | } | |
919 | } | |
920 | }, | |
921 | "ipv6": { | |
922 | "unicast": { | |
923 | "neighbor": { | |
924 | "r2": { | |
925 | "dest_link": { | |
926 | "r1": {"graceful-restart-helper": True} | |
927 | } | |
928 | } | |
929 | } | |
930 | } | |
931 | }, | |
932 | } | |
933 | } | |
934 | }, | |
935 | "r2": {"bgp": {"graceful-restart": {"graceful-restart": True}}}, | |
936 | } | |
937 | ||
938 | configure_gr_followed_by_clear(tgen, topo, input_dict, tc_name, dut="r1", peer="r2") | |
939 | ||
940 | for addr_type in ADDR_TYPES: | |
941 | result = verify_graceful_restart( | |
942 | tgen, topo, addr_type, input_dict, dut="r1", peer="r2" | |
943 | ) | |
944 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
945 | ||
946 | # Verifying BGP RIB routes | |
947 | dut = "r3" | |
948 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
949 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
950 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
951 | ||
952 | # Verifying RIB routes before shutting down BGPd daemon | |
953 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
954 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
955 | ||
956 | # Verifying BGP RIB routes | |
957 | dut = "r3" | |
958 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
959 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
960 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
961 | ||
962 | # Verifying RIB routes before shutting down BGPd daemon | |
963 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
964 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
965 | ||
966 | # Kill BGPd daemon on R1 | |
967 | kill_router_daemons(tgen, "r2", ["bgpd"]) | |
968 | ||
969 | for addr_type in ADDR_TYPES: | |
970 | # Verifying BGP RIB routes | |
971 | dut = "r3" | |
972 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
973 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
974 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
975 | ||
976 | # Verifying RIB routes before shutting down BGPd daemon | |
977 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
978 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
979 | ||
980 | # Verifying BGP RIB routes | |
981 | dut = "r3" | |
982 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
983 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
984 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
985 | ||
986 | # Verifying RIB routes before shutting down BGPd daemon | |
987 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
988 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
989 | ||
990 | # Start BGPd daemon on R1 | |
991 | start_router_daemons(tgen, "r2", ["bgpd"]) | |
992 | ||
993 | for addr_type in ADDR_TYPES: | |
994 | result = verify_bgp_convergence(tgen, topo) | |
995 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
996 | ||
997 | # Verifying BGP RIB routes | |
998 | dut = "r3" | |
999 | input_dict_1 = {key: topo["routers"][key] for key in ["r1"]} | |
1000 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_1) | |
1001 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
1002 | ||
1003 | # Verifying RIB routes before shutting down BGPd daemon | |
1004 | result = verify_rib(tgen, addr_type, dut, input_dict_1) | |
1005 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
1006 | ||
1007 | # Verifying BGP RIB routes | |
1008 | dut = "r3" | |
1009 | input_dict_2 = {key: topo["routers"][key] for key in ["r2"]} | |
1010 | result = verify_bgp_rib(tgen, addr_type, dut, input_dict_2) | |
1011 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
1012 | ||
1013 | # Verifying RIB routes before shutting down BGPd daemon | |
1014 | result = verify_rib(tgen, addr_type, dut, input_dict_2) | |
1015 | assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result) | |
1016 | ||
1017 | write_test_footer(tc_name) | |
1018 | ||
1019 | ||
1020 | if __name__ == "__main__": | |
1021 | args = ["-s"] + sys.argv[1:] | |
1022 | sys.exit(pytest.main(args)) |