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Commit | Line | Data |
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445822a9 DM |
1 | |
2 | //// | |
3 | ||
4 | This is currently not included, because | |
5 | - it requires ifupdown2 | |
6 | - routing needs more documentation | |
7 | ||
8 | //// | |
9 | ||
10 | ||
11 | VXLAN layer2 with vlan unware linux bridges | |
12 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
13 | ||
14 | VXLAN is an overlay network to carry Ethernet traffic over an existing IP network | |
15 | while accommodating a very large number of tenants. It is defined in RFC 7348. | |
16 | Each overlay network is known as a VXLAN Segment and identified by a unique | |
17 | 24-bit segment ID called a VXLAN Network Identifier (VNI). | |
18 | ||
19 | For BUM traffic (broadcast / unknown unicast traffic, multicast), | |
20 | we have 3 differents vxlan setup modes : multicast, unicast, bgp-evpn | |
21 | ||
22 | image::images/vxlan-l2-vlanunaware.svg["vxlan l2 bridge vlan unaware",align="center"] | |
23 | ||
24 | multicast mode | |
25 | ^^^^^^^^^^^^^^ | |
26 | ||
27 | This scenario relies in head end replication, meaning that end host in case | |
28 | of not having any entry for the destination MAC address will send out an ARP | |
29 | to other devices / VTEPs in the VXLAN network. | |
30 | This is done by sending the request to the VXLAN multicast group, | |
31 | remote VTEPs will get the packet and answer accordingly direct to the originating VTEP. | |
32 | ||
33 | ||
34 | * node1 | |
35 | ||
36 | ---- | |
37 | auto eno1 | |
38 | iface eno1 inet manual | |
39 | ||
40 | auto vmbr0 | |
41 | iface vmbr0 inet static | |
42 | address 192.168.0.1 | |
43 | netmask 255.255.255.0 | |
44 | bridge_ports eno1 | |
45 | bridge_stp off | |
46 | bridge_fd 0 | |
47 | ||
48 | auto vxlan2 | |
49 | iface vxlan2 inet manual | |
50 | vxlan-svcnodeip 225.20.1.1 | |
51 | vxlan-physdev eno1 | |
52 | ||
53 | auto vmbr2 | |
54 | iface vmbr2 inet manual | |
55 | bridge_ports vxlan2 | |
56 | bridge_stp off | |
57 | bridge_fd 0 | |
58 | ||
59 | auto vxlan3 | |
60 | iface vxlan3 inet manual | |
61 | vxlan-svcnodeip 225.20.1.1 | |
62 | vxlan-physdev eno1 | |
63 | ||
64 | auto vmbr3 | |
65 | iface vmbr3 inet manual | |
66 | bridge_ports vxlan3 | |
67 | bridge_stp off | |
68 | bridge_fd 0 | |
69 | ---- | |
70 | ||
71 | ||
72 | * node2 | |
73 | ||
74 | ---- | |
75 | auto eno1 | |
76 | iface eno1 inet manual | |
77 | ||
78 | auto vmbr0 | |
79 | iface vmbr0 inet static | |
80 | address 192.168.0.2 | |
81 | netmask 255.255.255.0 | |
82 | bridge_ports eno1 | |
83 | bridge_stp off | |
84 | bridge_fd 0 | |
85 | ||
86 | auto vxlan2 | |
87 | iface vxlan2 inet manual | |
88 | vxlan-svcnodeip 225.20.1.1 | |
89 | vxlan-physdev eno1 | |
90 | ||
91 | auto vmbr2 | |
92 | iface vmbr2 inet manual | |
93 | bridge_ports vxlan2 | |
94 | bridge_stp off | |
95 | bridge_fd 0 | |
96 | ||
97 | ||
98 | auto vxlan3 | |
99 | iface vxlan3 inet manual | |
100 | vxlan-svcnodeip 225.20.1.1 | |
101 | vxlan-physdev eno1 | |
102 | ||
103 | auto vmbr3 | |
104 | iface vmbr3 inet manual | |
105 | bridge_ports vxlan3 | |
106 | bridge_stp off | |
107 | bridge_fd 0 | |
108 | ---- | |
109 | ||
110 | ||
111 | * node3 | |
112 | ||
113 | ---- | |
114 | auto eno1 | |
115 | iface eno1 inet manual | |
116 | ||
117 | auto vmbr0 | |
118 | iface vmbr0 inet static | |
119 | address 192.168.0.3 | |
120 | netmask 255.255.255.0 | |
121 | bridge_ports eno1 | |
122 | bridge_stp off | |
123 | bridge_fd 0 | |
124 | ||
125 | auto vxlan2 | |
126 | iface vxlan2 inet manual | |
127 | vxlan-svcnodeip 225.20.1.1 | |
128 | vxlan-physdev eno1 | |
129 | ||
130 | auto vmbr2 | |
131 | iface vmbr2 inet manual | |
132 | bridge_ports vxlan2 | |
133 | bridge_stp off | |
134 | bridge_fd 0 | |
135 | ||
136 | ||
137 | auto vxlan3 | |
138 | iface vxlan3 inet manual | |
139 | vxlan-svcnodeip 225.20.1.1 | |
140 | vxlan-physdev eno1 | |
141 | ||
142 | auto vmbr3 | |
143 | iface vmbr3 inet manual | |
144 | bridge_ports vxlan3 | |
145 | bridge_stp off | |
146 | bridge_fd 0 | |
147 | ---- | |
148 | ||
149 | ||
150 | unicast mode | |
151 | ^^^^^^^^^^^^ | |
152 | ||
153 | We can replace multicast by head-end replication of BUM frames to a statically configured lists of remote VTEPs. | |
154 | The VXLAN is defined without a remote multicast group. | |
155 | Instead, all the remote VTEPs are associated with the all-zero address: | |
156 | a BUM frame will be duplicated to all these destinations. | |
157 | The VXLAN device will still learn remote addresses automatically using source-address learning. | |
158 | ||
159 | * node1 | |
160 | ||
161 | ---- | |
162 | auto eno1 | |
163 | iface eno1 inet manual | |
164 | ||
165 | auto vmbr0 | |
166 | iface vmbr0 inet static | |
167 | address 192.168.0.1 | |
168 | netmask 255.255.255.0 | |
169 | bridge_ports eno1 | |
170 | bridge_stp off | |
171 | bridge_fd 0 | |
172 | ||
173 | ||
174 | auto vxlan2 | |
175 | iface vxlan2 inet manual | |
176 | vxlan_remoteip 192.168.0.2 | |
177 | vxlan_remoteip 192.168.0.3 | |
178 | ||
179 | ||
180 | auto vmbr2 | |
181 | iface vmbr2 inet manual | |
182 | bridge_ports vxlan2 | |
183 | bridge_stp off | |
184 | bridge_fd 0 | |
185 | ||
186 | ||
187 | auto vxlan3 | |
188 | iface vxlan2 inet manual | |
189 | vxlan_remoteip 192.168.0.2 | |
190 | vxlan_remoteip 192.168.0.3 | |
191 | ||
192 | ||
193 | auto vmbr3 | |
194 | iface vmbr3 inet manual | |
195 | bridge_ports vxlan3 | |
196 | bridge_stp off | |
197 | bridge_fd 0 | |
198 | ---- | |
199 | ||
200 | ||
201 | * node2 | |
202 | ||
203 | ---- | |
204 | auto eno1 | |
205 | iface eno1 inet manual | |
206 | ||
207 | auto vmbr0 | |
208 | iface vmbr0 inet static | |
209 | address 192.168.0.2 | |
210 | netmask 255.255.255.0 | |
211 | bridge_ports eno1 | |
212 | bridge_stp off | |
213 | bridge_fd 0 | |
214 | ||
215 | auto vxlan2 | |
216 | iface vxlan2 inet manual | |
217 | vxlan_remoteip 192.168.0.1 | |
218 | vxlan_remoteip 192.168.0.3 | |
219 | ||
220 | ||
221 | ||
222 | auto vmbr2 | |
223 | iface vmbr2 inet manual | |
224 | bridge_ports vxlan2 | |
225 | bridge_stp off | |
226 | bridge_fd 0 | |
227 | ||
228 | auto vxlan3 | |
229 | iface vxlan2 inet manual | |
230 | vxlan_remoteip 192.168.0.1 | |
231 | vxlan_remoteip 192.168.0.3 | |
232 | ||
233 | ||
234 | auto vmbr3 | |
235 | iface vmbr3 inet manual | |
236 | bridge_ports vxlan3 | |
237 | bridge_stp off | |
238 | bridge_fd 0 | |
239 | ---- | |
240 | ||
241 | ||
242 | * node3 | |
243 | ||
244 | ---- | |
245 | auto eno1 | |
246 | iface eno1 inet manual | |
247 | ||
248 | auto vmbr0 | |
249 | iface vmbr0 inet static | |
250 | address 192.168.0.3 | |
251 | netmask 255.255.255.0 | |
252 | bridge_ports eno1 | |
253 | bridge_stp off | |
254 | bridge_fd 0 | |
255 | ||
256 | auto vxlan2 | |
257 | iface vxlan2 inet manual | |
258 | vxlan_remoteip 192.168.0.2 | |
259 | vxlan_remoteip 192.168.0.3 | |
260 | ||
261 | ||
262 | ||
263 | auto vmbr2 | |
264 | iface vmbr2 inet manual | |
265 | bridge_ports vxlan2 | |
266 | bridge_stp off | |
267 | bridge_fd 0 | |
268 | ||
269 | auto vxlan3 | |
270 | iface vxlan2 inet manual | |
271 | vxlan_remoteip 192.168.0.2 | |
272 | vxlan_remoteip 192.168.0.3 | |
273 | ||
274 | ||
275 | auto vmbr3 | |
276 | iface vmbr3 inet manual | |
277 | bridge_ports vxlan3 | |
278 | bridge_stp off | |
279 | bridge_fd 0 | |
280 | ---- | |
281 | ||
282 | ||
283 | bgp-evpn | |
284 | ^^^^^^^^ | |
285 | ||
286 | VTEPs use control plane learning/distribution via BGP for remote MAC addresses instead of data plane learning. | |
287 | VTEPs have the ability to suppress ARP flooding over VXLAN tunnels. | |
288 | ||
289 | The control plane used here is FRR, a bgp routing software. | |
290 | Each node in the proxmox cluster peer with each others nodes. | |
291 | For bigger networks, or multiple proxmox clusters, | |
292 | it's possible to use external bgp route reflector servers. | |
293 | ||
294 | * node1 | |
295 | ||
296 | ---- | |
297 | auto eno1 | |
298 | iface eno1 inet manual | |
299 | ||
300 | auto vmbr0 | |
301 | iface vmbr0 inet static | |
302 | address 192.168.0.1 | |
303 | netmask 255.255.255.0 | |
304 | bridge_ports eno1 | |
305 | bridge_stp off | |
306 | bridge_fd 0 | |
307 | ||
308 | auto vxlan2 | |
309 | iface vxlan2 inet manual | |
310 | vxlan-local-tunnelip 192.168.0.1 | |
311 | bridge-learning off | |
312 | bridge-arp-nd-suppress on | |
313 | bridge-unicast-flood off | |
314 | bridge-multicast-flood off | |
315 | ||
316 | ||
317 | auto vmbr2 | |
318 | iface vmbr2 inet manual | |
319 | bridge_ports vxlan2 | |
320 | bridge_stp off | |
321 | bridge_fd 0 | |
322 | ||
323 | ||
324 | auto vxlan3 | |
325 | iface vxlan3 inet manual | |
326 | vxlan-local-tunnelip 192.168.0.1 | |
327 | bridge-learning off | |
328 | bridge-arp-nd-suppress on | |
329 | bridge-unicast-flood off | |
330 | bridge-multicast-flood off | |
331 | ||
332 | ||
333 | auto vmbr3 | |
334 | iface vmbr3 inet manual | |
335 | bridge_ports vxlan3 | |
336 | bridge_stp off | |
337 | bridge_fd 0 | |
338 | ---- | |
339 | ||
340 | ||
341 | /etc/frr/frr.conf | |
342 | ||
343 | ---- | |
344 | router bgp 1234 | |
345 | no bgp default ipv4-unicast | |
346 | coalesce-time 1000 | |
347 | neighbor 192.168.0.2 remote-as 1234 | |
348 | neighbor 192.168.0.3 remote-as 1234 | |
349 | ! | |
350 | address-family l2vpn evpn | |
351 | neighbor 192.168.0.2 activate | |
352 | neighbor 192.168.0.3 activate | |
353 | advertise-all-vni | |
354 | exit-address-family | |
355 | ! | |
356 | line vty | |
357 | ! | |
358 | ---- | |
359 | ||
360 | ||
361 | * node2 | |
362 | ||
363 | ---- | |
364 | auto eno1 | |
365 | iface eno1 inet manual | |
366 | ||
367 | auto vmbr0 | |
368 | iface vmbr0 inet static | |
369 | address 192.168.0.2 | |
370 | netmask 255.255.255.0 | |
371 | bridge_ports eno1 | |
372 | bridge_stp off | |
373 | bridge_fd 0 | |
374 | ||
375 | auto vxlan2 | |
376 | iface vxlan2 inet manual | |
377 | vxlan-local-tunnelip 192.168.0.2 | |
378 | bridge-learning off | |
379 | bridge-arp-nd-suppress on | |
380 | bridge-unicast-flood off | |
381 | bridge-multicast-flood off | |
382 | ||
383 | ||
384 | auto vmbr2 | |
385 | iface vmbr2 inet manual | |
386 | bridge_ports vxlan2 | |
387 | bridge_stp off | |
388 | bridge_fd 0 | |
389 | ||
390 | auto vxlan3 | |
391 | iface vxlan3 inet manual | |
392 | vxlan-local-tunnelip 192.168.0.2 | |
393 | bridge-learning off | |
394 | bridge-arp-nd-suppress on | |
395 | bridge-unicast-flood off | |
396 | bridge-multicast-flood off | |
397 | ||
398 | ||
399 | auto vmbr3 | |
400 | iface vmbr3 inet manual | |
401 | bridge_ports vxlan3 | |
402 | bridge_stp off | |
403 | bridge_fd 0 | |
404 | ---- | |
405 | ||
406 | ||
407 | /etc/frr/frr.conf | |
408 | ||
409 | ---- | |
410 | router bgp 1234 | |
411 | no bgp default ipv4-unicast | |
412 | coalesce-time 1000 | |
413 | neighbor 192.168.0.1 remote-as 1234 | |
414 | neighbor 192.168.0.3 remote-as 1234 | |
415 | ! | |
416 | address-family l2vpn evpn | |
417 | neighbor 192.168.0.1 activate | |
418 | neighbor 192.168.0.3 activate | |
419 | advertise-all-vni | |
420 | exit-address-family | |
421 | ! | |
422 | line vty | |
423 | ! | |
424 | ---- | |
425 | ||
426 | ||
427 | * node3 | |
428 | ||
429 | ---- | |
430 | auto eno1 | |
431 | iface eno1 inet manual | |
432 | ||
433 | auto vmbr0 | |
434 | iface vmbr0 inet static | |
435 | address 192.168.0.2 | |
436 | netmask 255.255.255.0 | |
437 | bridge_ports eno1 | |
438 | bridge_stp off | |
439 | bridge_fd 0 | |
440 | ||
441 | auto vxlan2 | |
442 | iface vxlan2 inet manual | |
443 | vxlan-local-tunnelip 192.168.0.3 | |
444 | bridge-learning off | |
445 | bridge-arp-nd-suppress on | |
446 | bridge-unicast-flood off | |
447 | bridge-multicast-flood off | |
448 | ||
449 | ||
450 | auto vmbr2 | |
451 | iface vmbr2 inet manual | |
452 | bridge_ports vxlan2 | |
453 | bridge_stp off | |
454 | bridge_fd 0 | |
455 | ||
456 | auto vxlan3 | |
457 | iface vxlan3 inet manual | |
458 | vxlan-local-tunnelip 192.168.0.3 | |
459 | bridge-learning off | |
460 | bridge-arp-nd-suppress on | |
461 | bridge-unicast-flood off | |
462 | bridge-multicast-flood off | |
463 | ||
464 | ||
465 | auto vmbr3 | |
466 | iface vmbr3 inet manual | |
467 | bridge_ports vxlan3 | |
468 | bridge_stp off | |
469 | bridge_fd 0 | |
470 | ---- | |
471 | ||
472 | ||
473 | /etc/frr/frr.conf | |
474 | ||
475 | ||
476 | ---- | |
477 | router bgp 1234 | |
478 | no bgp default ipv4-unicast | |
479 | coalesce-time 1000 | |
480 | neighbor 192.168.0.1 remote-as 1234 | |
481 | neighbor 192.168.0.2 remote-as 1234 | |
482 | ! | |
483 | address-family l2vpn evpn | |
484 | neighbor 192.168.0.1 activate | |
485 | neighbor 192.168.0.2 activate | |
486 | advertise-all-vni | |
487 | exit-address-family | |
488 | ! | |
489 | line vty | |
490 | ! | |
491 | ---- | |
492 | ||
1821b137 AD |
493 | VXLAN layer3 routing with anycast gateway |
494 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
495 | ||
496 | With this need, each vmbr bridge will be the gateway for the vm. | |
497 | Same vmbr on different node, will have same ip address and same mac address, | |
498 | to have working vm live migration and no network disruption. | |
499 | ||
500 | VXLAN layer3 routing only work with FRR and non-aware bridge. | |
501 | (vlan aware bridge support is buggy currently). | |
502 | ||
503 | ||
504 | sysctl.conf tuning | |
505 | ||
506 | ---- | |
507 | #enable routing | |
508 | net.ipv4.ip_forward=1 | |
509 | net.ipv6.conf.all.forwarding=1 | |
510 | #disable reverse path filtering | |
511 | net.ipv4.conf.default.rp_filter=0 | |
512 | net.ipv4.conf.all.rp_filter=0 | |
513 | #allow frr to work with vrf | |
514 | net.ipv4.tcp_l3mdev_accept=1 | |
515 | ---- | |
516 | ||
517 | asymmetric model | |
518 | ^^^^^^^^^^^^^^^^ | |
519 | ||
520 | This is the simplest mode. To get it work, all vxlan need to be defined on all nodes. | |
521 | ||
522 | The asymmetric model allows routing and bridging on the VXLAN tunnel ingress, | |
523 | but only bridging on the egress. | |
524 | This results in bi-directional VXLAN traffic traveling on different VNIs | |
525 | in each direction (always the destination VNI) across the routed infrastructure. | |
526 | ||
527 | image::images/vxlan-l3-asymmetric.svg["vxlan l3 asymmetric",align="center"] | |
528 | ||
529 | ||
530 | * node1 | |
531 | ||
532 | ---- | |
533 | auto eno1 | |
534 | iface eno1 inet manual | |
535 | ||
536 | auto vmbr0 | |
537 | iface vmbr0 inet static | |
538 | address 192.168.0.1 | |
539 | netmask 255.255.255.0 | |
540 | bridge_ports eno1 | |
541 | bridge_stp off | |
542 | bridge_fd 0 | |
543 | ||
544 | auto vxlan2 | |
545 | iface vxlan2 inet manual | |
546 | vxlan-local-tunnelip 192.168.0.1 | |
547 | bridge-learning off | |
548 | bridge-arp-nd-suppress on | |
549 | bridge-unicast-flood off | |
550 | bridge-multicast-flood off | |
551 | ||
552 | ||
553 | auto vmbr2 | |
554 | iface vmbr2 inet static | |
555 | address 10.0.2.254 | |
556 | netmask 255.255.255.0 | |
557 | hwaddress 44:39:39:FF:40:94 | |
558 | bridge_ports vxlan2 | |
559 | bridge_stp off | |
560 | bridge_fd 0 | |
561 | ||
562 | ||
563 | auto vxlan3 | |
564 | iface vxlan3 inet manual | |
565 | vxlan-local-tunnelip 192.168.0.1 | |
566 | bridge-learning off | |
567 | bridge-arp-nd-suppress on | |
568 | bridge-unicast-flood off | |
569 | bridge-multicast-flood off | |
570 | ||
571 | ||
572 | auto vmbr3 | |
573 | iface vmbr3 inet static | |
574 | address 10.0.3.254 | |
575 | netmask 255.255.255.0 | |
576 | hwaddress 44:39:39:FF:40:94 | |
577 | bridge_ports vxlan3 | |
578 | bridge_stp off | |
579 | bridge_fd 0 | |
580 | ---- | |
581 | ||
582 | ||
583 | frr.conf | |
584 | ||
585 | ---- | |
586 | router bgp 1234 | |
587 | bgp router-id 192.168.0.1 | |
588 | no bgp default ipv4-unicast | |
589 | coalesce-time 1000 | |
590 | neighbor 192.168.0.2 remote-as 1234 | |
591 | neighbor 192.168.0.3 remote-as 1234 | |
592 | ! | |
593 | address-family l2vpn evpn | |
594 | neighbor 192.168.0.2 activate | |
595 | neighbor 192.168.0.3 activate | |
596 | advertise-all-vni | |
597 | exit-address-family | |
598 | ! | |
599 | line vty | |
600 | ! | |
601 | ---- | |
602 | ||
603 | ||
604 | * node2 | |
605 | ||
606 | ---- | |
607 | auto eno1 | |
608 | iface eno1 inet manual | |
609 | ||
610 | auto vmbr0 | |
611 | iface vmbr0 inet static | |
612 | address 192.168.0.2 | |
613 | netmask 255.255.255.0 | |
614 | bridge_ports eno1 | |
615 | bridge_stp off | |
616 | bridge_fd 0 | |
617 | ||
618 | auto vxlan2 | |
619 | iface vxlan2 inet manual | |
620 | vxlan-local-tunnelip 192.168.0.2 | |
621 | bridge-learning off | |
622 | bridge-arp-nd-suppress on | |
623 | bridge-unicast-flood off | |
624 | bridge-multicast-flood off | |
625 | ||
626 | ||
627 | auto vmbr2 | |
628 | iface vmbr2 inet static | |
629 | address 10.0.2.254 | |
630 | netmask 255.255.255.0 | |
631 | hwaddress 44:39:39:FF:40:94 | |
632 | bridge_ports vxlan2 | |
633 | bridge_stp off | |
634 | bridge_fd 0 | |
635 | ||
636 | ||
637 | auto vxlan3 | |
638 | iface vxlan3 inet manual | |
639 | vxlan-local-tunnelip 192.168.0.2 | |
640 | bridge-learning off | |
641 | bridge-arp-nd-suppress on | |
642 | bridge-unicast-flood off | |
643 | bridge-multicast-flood off | |
644 | ||
645 | ||
646 | auto vmbr3 | |
647 | iface vmbr3 inet static | |
648 | address 10.0.3.254 | |
649 | netmask 255.255.255.0 | |
650 | hwaddress 44:39:39:FF:40:94 | |
651 | bridge_ports vxlan3 | |
652 | bridge_stp off | |
653 | bridge_fd 0 | |
654 | ---- | |
655 | ||
656 | ||
657 | frr.conf | |
658 | ||
659 | ---- | |
660 | router bgp 1234 | |
661 | bgp router-id 192.168.0.2 | |
662 | no bgp default ipv4-unicast | |
663 | coalesce-time 1000 | |
664 | neighbor 192.168.0.1 remote-as 1234 | |
665 | neighbor 192.168.0.3 remote-as 1234 | |
666 | ! | |
667 | address-family l2vpn evpn | |
668 | neighbor 192.168.0.1 activate | |
669 | neighbor 192.168.0.3 activate | |
670 | advertise-all-vni | |
671 | exit-address-family | |
672 | ! | |
673 | line vty | |
674 | ! | |
675 | ---- | |
676 | ||
677 | ||
678 | * node3 | |
679 | ||
680 | ---- | |
681 | auto eno1 | |
682 | iface eno1 inet manual | |
683 | ||
684 | auto vmbr0 | |
685 | iface vmbr0 inet static | |
686 | address 192.168.0.3 | |
687 | netmask 255.255.255.0 | |
688 | bridge_ports eno1 | |
689 | bridge_stp off | |
690 | bridge_fd 0 | |
691 | ||
692 | auto vxlan2 | |
693 | iface vxlan2 inet manual | |
694 | vxlan-local-tunnelip 192.168.0.3 | |
695 | bridge-learning off | |
696 | bridge-arp-nd-suppress on | |
697 | bridge-unicast-flood off | |
698 | bridge-multicast-flood off | |
699 | ||
700 | ||
701 | auto vmbr2 | |
702 | iface vmbr2 inet static | |
703 | address 10.0.2.254 | |
704 | netmask 255.255.255.0 | |
705 | hwaddress 44:39:39:FF:40:94 | |
706 | bridge_ports vxlan2 | |
707 | bridge_stp off | |
708 | bridge_fd 0 | |
709 | ||
710 | ||
711 | auto vxlan3 | |
712 | iface vxlan3 inet manual | |
713 | vxlan-local-tunnelip 192.168.0.3 | |
714 | bridge-learning off | |
715 | bridge-arp-nd-suppress on | |
716 | bridge-unicast-flood off | |
717 | bridge-multicast-flood off | |
718 | ||
719 | ||
720 | auto vmbr3 | |
721 | iface vmbr3 inet static | |
722 | address 10.0.3.254 | |
723 | netmask 255.255.255.0 | |
724 | hwaddress 44:39:39:FF:40:94 | |
725 | bridge_ports vxlan3 | |
726 | bridge_stp off | |
727 | bridge_fd 0 | |
728 | ---- | |
729 | ||
730 | ||
731 | frr.conf | |
732 | ||
733 | ---- | |
734 | router bgp 1234 | |
735 | bgp router-id 192.168.0.3 | |
736 | no bgp default ipv4-unicast | |
737 | coalesce-time 1000 | |
738 | neighbor 192.168.0.1 remote-as 1234 | |
739 | neighbor 192.168.0.2 remote-as 1234 | |
740 | ! | |
741 | address-family l2vpn evpn | |
742 | neighbor 192.168.0.1 activate | |
743 | neighbor 192.168.0.2 activate | |
744 | advertise-all-vni | |
745 | exit-address-family | |
746 | ! | |
747 | line vty | |
748 | ! | |
749 | ---- | |
750 | ||
751 | ||
752 | symmetric model | |
753 | ^^^^^^^^^^^^^^^ | |
754 | ||
755 | With this model, you don't need to have all vxlan on all nodes. | |
756 | This model will also be needed to route traffic to an external router. | |
757 | ||
758 | The symmetric model routes and bridges on both the ingress and the egress leafs. | |
759 | This results in bi-directional traffic being able to travel on the same VNI, hence the symmetric name. | |
760 | However, a new specialty transit VNI is used for all routed VXLAN traffic, called the L3VNI. | |
761 | All traffic that needs to be routed will be routed onto the L3VNI, tunneled across the layer 3 Infrastructure, | |
762 | routed off the L3VNI to the appropriate VLAN and ultimately bridged to the destination. | |
763 | ||
764 | A vrf is needed for the L3VNI, so all vmbr bridge need to be in the vrf if they want to be able to reach each others. | |
765 | ||
766 | image::images/vxlan-l3-symmetric.svg["vxlan l3 symmetric",align="center"] | |
767 | ||
768 | ||
769 | * node1 | |
770 | ||
771 | ---- | |
772 | auto vrf1 | |
773 | iface vrf1 | |
774 | vrf-table auto | |
775 | ||
776 | auto eno1 | |
777 | iface eno1 inet manual | |
778 | ||
779 | auto vmbr0 | |
780 | iface vmbr0 inet static | |
781 | address 192.168.0.1 | |
782 | netmask 255.255.255.0 | |
783 | bridge_ports eno1 | |
784 | bridge_stp off | |
785 | bridge_fd 0 | |
786 | ||
787 | auto vxlan2 | |
788 | iface vxlan2 inet manual | |
789 | vxlan-local-tunnelip 192.168.0.1 | |
790 | bridge-learning off | |
791 | bridge-arp-nd-suppress on | |
792 | bridge-unicast-flood off | |
793 | bridge-multicast-flood off | |
794 | ||
795 | auto vmbr2 | |
796 | iface vmbr2 inet static | |
797 | bridge_ports vxlan2 | |
798 | bridge_stp off | |
799 | bridge_fd 0 | |
800 | address 10.0.2.254 | |
801 | netmask 255.255.255.0 | |
802 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr2 | |
803 | vrf vrf1 | |
804 | ||
805 | auto vxlan3 | |
806 | iface vxlan3 inet manual | |
807 | vxlan-local-tunnelip 192.168.0.1 | |
808 | bridge-learning off | |
809 | bridge-arp-nd-suppress on | |
810 | bridge-unicast-flood off | |
811 | bridge-multicast-flood off | |
812 | ||
813 | auto vmbr3 | |
814 | iface vmbr3 inet static | |
815 | bridge_ports vxlan3 | |
816 | bridge_stp off | |
817 | bridge_fd 0 | |
818 | address 10.0.3.254 | |
819 | netmask 255.255.255.0 | |
820 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr3 | |
821 | vrf vrf1 | |
822 | ||
823 | #interconnect vxlan-vfr l3vni | |
824 | auto vxlan4000 | |
825 | iface vxlan4000 inet manual | |
826 | vxlan-local-tunnelip 192.168.0.1 | |
827 | bridge-learning off | |
828 | bridge-arp-nd-suppress on | |
829 | bridge-unicast-flood off | |
830 | bridge-multicast-flood off | |
831 | ||
832 | ||
833 | auto vmbr4000 | |
834 | iface vmbr4000 inet manual | |
835 | bridge_ports vxlan4000 | |
836 | bridge_stp off | |
837 | bridge_fd 0 | |
838 | hwaddress 44:39:39:FF:40:90 #must be different on each node | |
839 | vrf vrf1 | |
840 | ---- | |
841 | ||
842 | frr.conf | |
843 | ||
844 | ---- | |
845 | vrf vrf1 | |
846 | vni 4000 | |
847 | ! | |
848 | router bgp 1234 | |
849 | bgp router-id 192.168.0.1 | |
850 | no bgp default ipv4-unicast | |
851 | coalesce-time 1000 | |
852 | neighbor 192.168.0.2 remote-as 1234 | |
853 | neighbor 192.168.0.3 remote-as 1234 | |
854 | ! | |
855 | address-family l2vpn evpn | |
856 | neighbor 192.168.0.2 activate | |
857 | neighbor 192.168.0.3 activate | |
858 | advertise-all-vni | |
859 | exit-address-family | |
860 | ! | |
861 | router bgp 1234 vrf vrf1 | |
862 | ! | |
863 | bgp router-id 192.168.0.1 | |
864 | ! | |
865 | address-family ipv4 unicast | |
866 | redistribute connected | |
867 | exit-address-family | |
868 | ! | |
869 | address-family l2vpn evpn | |
870 | advertise ipv4 unicast | |
871 | exit-address-family | |
872 | ! | |
873 | line vty | |
874 | ! | |
875 | ---- | |
876 | ||
877 | ||
878 | * node2 | |
879 | ||
880 | ---- | |
881 | auto vrf1 | |
882 | iface vrf1 | |
883 | vrf-table auto | |
884 | ||
885 | auto eno1 | |
886 | iface eno1 inet manual | |
887 | ||
888 | auto vmbr0 | |
889 | iface vmbr0 inet static | |
890 | address 192.168.0.2 | |
891 | netmask 255.255.255.0 | |
892 | bridge_ports eno1 | |
893 | bridge_stp off | |
894 | bridge_fd 0 | |
895 | ||
896 | auto vxlan2 | |
897 | iface vxlan2 inet manual | |
898 | vxlan-local-tunnelip 192.168.0.2 | |
899 | bridge-learning off | |
900 | bridge-arp-nd-suppress on | |
901 | bridge-unicast-flood off | |
902 | bridge-multicast-flood off | |
903 | ||
904 | auto vmbr2 | |
905 | iface vmbr2 inet static | |
906 | bridge_ports vxlan2 | |
907 | bridge_stp off | |
908 | bridge_fd 0 | |
909 | address 10.0.2.254 | |
910 | netmask 255.255.255.0 | |
911 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr2 | |
912 | vrf vrf1 | |
913 | ||
914 | auto vxlan3 | |
915 | iface vxlan3 inet manual | |
916 | vxlan-local-tunnelip 192.168.0.2 | |
917 | bridge-learning off | |
918 | bridge-arp-nd-suppress on | |
919 | bridge-unicast-flood off | |
920 | bridge-multicast-flood off | |
921 | ||
922 | auto vmbr3 | |
923 | iface vmbr3 inet static | |
924 | bridge_ports vxlan3 | |
925 | bridge_stp off | |
926 | bridge_fd 0 | |
927 | address 10.0.3.254 | |
928 | netmask 255.255.255.0 | |
929 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr3 | |
930 | vrf vrf1 | |
931 | ||
932 | #interconnect vxlan-vfr l3vni | |
933 | auto vxlan4000 | |
934 | iface vxlan4000 inet manual | |
935 | vxlan-local-tunnelip 192.168.0.2 | |
936 | bridge-learning off | |
937 | bridge-arp-nd-suppress on | |
938 | bridge-unicast-flood off | |
939 | bridge-multicast-flood off | |
940 | ||
941 | ||
942 | auto vmbr4000 | |
943 | iface vmbr4000 inet manual | |
944 | bridge_ports vxlan4000 | |
945 | bridge_stp off | |
946 | bridge_fd 0 | |
947 | hwaddress 44:39:39:FF:40:91 #must be different on each node | |
948 | vrf vrf1 | |
949 | ---- | |
950 | ||
951 | ||
952 | frr.conf | |
953 | ||
954 | ---- | |
955 | vrf vrf1 | |
956 | vni 4000 | |
957 | ! | |
958 | router bgp 1234 | |
959 | bgp router-id 192.168.0.2 | |
960 | no bgp default ipv4-unicast | |
961 | coalesce-time 1000 | |
962 | neighbor 192.168.0.1 remote-as 1234 | |
963 | neighbor 192.168.0.3 remote-as 1234 | |
964 | ! | |
965 | address-family l2vpn evpn | |
966 | neighbor 192.168.0.1 activate | |
967 | neighbor 192.168.0.3 activate | |
968 | advertise-all-vni | |
969 | exit-address-family | |
970 | ! | |
971 | router bgp 1234 vrf vrf1 | |
972 | ! | |
973 | bgp router-id 192.168.0.2 | |
974 | ! | |
975 | address-family ipv4 unicast | |
976 | redistribute connected | |
977 | exit-address-family | |
978 | ! | |
979 | address-family l2vpn evpn | |
980 | advertise ipv4 unicast | |
981 | exit-address-family | |
982 | ! | |
983 | line vty | |
984 | ! | |
985 | ---- | |
986 | ||
987 | ||
988 | * node3 | |
989 | ||
990 | ---- | |
991 | auto vrf1 | |
992 | iface vrf1 | |
993 | vrf-table auto | |
994 | ||
995 | auto eno1 | |
996 | iface eno1 inet manual | |
997 | ||
998 | auto vmbr0 | |
999 | iface vmbr0 inet static | |
1000 | address 192.168.0.3 | |
1001 | netmask 255.255.255.0 | |
1002 | bridge_ports eno1 | |
1003 | bridge_stp off | |
1004 | bridge_fd 0 | |
1005 | ||
1006 | auto vxlan2 | |
1007 | iface vxlan2 inet manual | |
1008 | vxlan-local-tunnelip 192.168.0.3 | |
1009 | bridge-learning off | |
1010 | bridge-arp-nd-suppress on | |
1011 | bridge-unicast-flood off | |
1012 | bridge-multicast-flood off | |
1013 | ||
1014 | auto vmbr2 | |
1015 | iface vmbr2 inet static | |
1016 | bridge_ports vxlan2 | |
1017 | bridge_stp off | |
1018 | bridge_fd 0 | |
1019 | address 10.0.2.254 | |
1020 | netmask 255.255.255.0 | |
1021 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr2 | |
1022 | vrf vrf1 | |
1023 | ||
1024 | auto vxlan3 | |
1025 | iface vxlan3 inet manual | |
1026 | vxlan-local-tunnelip 192.168.0.3 | |
1027 | bridge-learning off | |
1028 | bridge-arp-nd-suppress on | |
1029 | bridge-unicast-flood off | |
1030 | bridge-multicast-flood off | |
1031 | ||
1032 | auto vmbr3 | |
1033 | iface vmbr3 inet static | |
1034 | bridge_ports vxlan3 | |
1035 | bridge_stp off | |
1036 | bridge_fd 0 | |
1037 | address 10.0.3.254 | |
1038 | netmask 255.255.255.0 | |
1039 | hwaddress 44:39:39:FF:40:94 #must be same on each node vmbr3 | |
1040 | vrf vrf1 | |
1041 | ||
1042 | #interconnect vxlan-vfr l3vni | |
1043 | auto vxlan4000 | |
1044 | iface vxlan4000 inet manual | |
1045 | vxlan-local-tunnelip 192.168.0.3 | |
1046 | bridge-learning off | |
1047 | bridge-arp-nd-suppress on | |
1048 | bridge-unicast-flood off | |
1049 | bridge-multicast-flood off | |
1050 | ||
1051 | ||
1052 | auto vmbr4000 | |
1053 | iface vmbr4000 inet manual | |
1054 | bridge_ports vxlan4000 | |
1055 | bridge_stp off | |
1056 | bridge_fd 0 | |
1057 | hwaddress 44:39:39:FF:40:92 #must be different on each node | |
1058 | vrf vrf1 | |
1059 | ---- | |
1060 | ||
1061 | ||
1062 | frr.conf | |
1063 | ||
1064 | ---- | |
1065 | vrf vrf1 | |
1066 | vni 4000 | |
1067 | ! | |
1068 | router bgp 1234 | |
1069 | bgp router-id 192.168.0.3 | |
1070 | no bgp default ipv4-unicast | |
1071 | coalesce-time 1000 | |
1072 | neighbor 192.168.0.1 remote-as 1234 | |
1073 | neighbor 192.168.0.2 remote-as 1234 | |
1074 | ! | |
1075 | address-family l2vpn evpn | |
1076 | neighbor 192.168.0.1 activate | |
1077 | neighbor 192.168.0.2 activate | |
1078 | advertise-all-vni | |
1079 | exit-address-family | |
1080 | ! | |
1081 | router bgp 1234 vrf vrf1 | |
1082 | ! | |
1083 | bgp router-id 192.168.0.3 | |
1084 | ! | |
1085 | address-family ipv4 unicast | |
1086 | redistribute connected | |
1087 | exit-address-family | |
1088 | ! | |
1089 | address-family l2vpn evpn | |
1090 | advertise ipv4 unicast | |
1091 | exit-address-family | |
1092 | ! | |
1093 | line vty | |
1094 | ! | |
1095 | ---- |