1 00:00:00,000 --> 00:00:02,365 [AUDIO LOGO] 2 00:00:02,365 --> 00:00:08,050 3 00:00:08,050 --> 00:00:13,000 Hello and welcome to scaling iBGP neighborships. 4 00:00:13,000 --> 00:00:15,040 In this skill, we're really going 5 00:00:15,040 --> 00:00:17,830 to be exploring how to prevent having 6 00:00:17,830 --> 00:00:22,120 to have a full mesh of iBGP neighborships 7 00:00:22,120 --> 00:00:25,840 because full meshes don't scale very well. 8 00:00:25,840 --> 00:00:29,470 Of course, the fundamental problem is in BGP, 9 00:00:29,470 --> 00:00:31,880 we have a rule of split horizon. 10 00:00:31,880 --> 00:00:36,190 Which means that if I receive iBGP updates from one iBGP 11 00:00:36,190 --> 00:00:39,380 peer, I cannot send them out to another. 12 00:00:39,380 --> 00:00:42,070 Therefore, the only way to get all the updates through 13 00:00:42,070 --> 00:00:44,080 would be to have a full mesh. 14 00:00:44,080 --> 00:00:47,570 But of course, we can't do that in most environments. 15 00:00:47,570 --> 00:00:49,840 So we do have two major technologies 16 00:00:49,840 --> 00:00:52,210 that we can use to alleviate this. 17 00:00:52,210 --> 00:00:53,980 We have confederations. 18 00:00:53,980 --> 00:00:55,960 And we have route reflectors. 19 00:00:55,960 --> 00:00:59,780 And these can be used either separately or together. 20 00:00:59,780 --> 00:01:01,930 So what we're going to be doing in this skill 21 00:01:01,930 --> 00:01:05,800 is building a BGP network from the ground up, 22 00:01:05,800 --> 00:01:10,450 using a combination of confederations and route 23 00:01:10,450 --> 00:01:11,600 reflectors. 24 00:01:11,600 --> 00:01:14,110 So in our first video here, we're 25 00:01:14,110 --> 00:01:16,750 going to be jumping in and putting together an entire game 26 00:01:16,750 --> 00:01:19,660 plan, as far as what we're going to be building. 27 00:01:19,660 --> 00:01:21,910 So we have a lot of things we're going to be covering. 28 00:01:21,910 --> 00:01:24,130 It's going to be a lot of fun building this network 29 00:01:24,130 --> 00:01:25,400 from the ground up. 30 00:01:25,400 --> 00:01:27,760 So I'll see you in the next video 31 00:01:27,760 --> 00:01:30,570 to put our game plan together. 32 00:01:30,570 --> 00:01:34,000