1 00:00:01,120 --> 00:00:10,480 In the section we're going to take a look to the basic BGP configuration the BGP adjacencies can be 2 00:00:10,480 --> 00:00:21,130 within the same autonomous system or indifferent as neighbors in the same as are called IBG neighbors 3 00:00:21,280 --> 00:00:31,000 and neighbors in different autonomous systems are called EVGA neighbors in BJP neighbors does not have 4 00:00:31,000 --> 00:00:33,890 to be directly connected. 5 00:00:34,210 --> 00:00:45,510 As you can see in our figure we how IPG they worship with Bindi's as number with Brother 1 2 and 3. 6 00:00:45,570 --> 00:00:58,150 These are the IBG neighbors and these two others can perform and even aegypti peering because they belong 7 00:00:58,150 --> 00:01:01,560 to different autonomous numbers. 8 00:01:03,960 --> 00:01:13,600 It is European neighbors are usually directly connected to each other and even AGP ILO's Rupp's switching 9 00:01:13,600 --> 00:01:16,370 between different autonomous systems. 10 00:01:16,470 --> 00:01:24,340 A PC position is established between the rodders before the route exchange and as you can see that here 11 00:01:24,340 --> 00:01:34,480 we have three autonomous thumbs and rather see an X can perform an image membership and rather the NY 12 00:01:34,970 --> 00:01:39,230 campaign from an ebay GAAP edges and see as well. 13 00:01:39,340 --> 00:01:47,580 And let's take a look to the IBG decency IBG neighbors EHLO Rob ex-general within the same autonomous 14 00:01:47,590 --> 00:01:55,640 them and at TZP session is established between the brothers before the route change neighboring rather 15 00:01:55,640 --> 00:02:04,540 is configured with the comment neighbor and must be able to access to each other before the BJP configuration. 16 00:02:04,660 --> 00:02:10,540 And and I yippy is usually used for this. 17 00:02:10,540 --> 00:02:24,410 And here we have an we can make an IBP peering between for example rather a and b as well as see two 18 00:02:24,550 --> 00:02:33,110 pro-white and IBP peering between and see they should reach each other OK. 19 00:02:33,280 --> 00:02:36,240 That means we can use an oil spill. 20 00:02:36,340 --> 00:02:39,420 We can use an ear GRB or something like that. 21 00:02:39,420 --> 00:02:43,120 We can use the stuff they grow out. 22 00:02:43,290 --> 00:02:45,500 They are all the things we need to focus. 23 00:02:45,500 --> 00:02:56,320 Is this Skye's should reach each other before exchanging the BGP IBG periodic updates. 24 00:02:58,000 --> 00:03:06,340 And here are the steps of the BJP edges and see their idol connect open some calm for a man established 25 00:03:07,350 --> 00:03:15,430 idols do rather queries drawing table to see if there is a route to reach the neighbor in the ideal 26 00:03:15,430 --> 00:03:24,820 step in the next step rather has found a route to reach the neighbor and the tree where a handshake 27 00:03:24,820 --> 00:03:35,710 has been completed in the open SAP LRB request has been sent to start at BGP session in the open confirmed 28 00:03:35,930 --> 00:03:41,300 rather acknowledged the paramita is required to accept the BJP session. 29 00:03:41,600 --> 00:03:48,940 Otherwise rather switch to the active state established in the open confirmed through rather acknowledge 30 00:03:49,000 --> 00:03:53,080 the paramita is required to accept the BJP in session. 31 00:03:53,300 --> 00:04:01,390 Otherwise the rather switch to the active state and in the establishment's neighborhood is established 32 00:04:01,480 --> 00:04:03,820 and running starts 33 00:04:06,550 --> 00:04:12,340 and here is the conversation of the BJP. 34 00:04:12,600 --> 00:04:19,700 We are fyrir others in here rather one two three four and five. 35 00:04:19,740 --> 00:04:24,500 The first thing we are going to focus on is IBG configuration greyish 36 00:04:27,920 --> 00:04:40,880 rather four and rather 5 can become an image appear as you can see OK and to provide this edges decency 37 00:04:40,970 --> 00:04:49,150 between these two others what we're going to use as this IP addresses are 38 00:04:52,680 --> 00:04:53,370 wrong. 39 00:04:53,480 --> 00:04:57,130 OK this is going to be for and is going to be five. 40 00:04:57,180 --> 00:05:08,440 All right what are we going to do is all rather five we are defining or rather BGP and autonomous number 41 00:05:08,440 --> 00:05:12,490 come and first and in rather forth. 42 00:05:12,520 --> 00:05:14,380 We are doing the same thing. 43 00:05:14,680 --> 00:05:22,260 Rather BJP and the BJP autonomous system that the rudder belongs to itself. 44 00:05:22,280 --> 00:05:30,930 OK then we are defining a neighbor statement between each other. 45 00:05:32,230 --> 00:05:45,140 With the rather Fyffe we are using member then one for the voice for which is rather for and REMAUT 46 00:05:45,180 --> 00:05:56,760 ass and the as number that rather for belongs to and in rather for what we're using is defining a neighbor's 47 00:05:56,770 --> 00:05:57,310 statement. 48 00:05:57,320 --> 00:06:01,720 Again that's the IP address of the other five. 49 00:06:01,970 --> 00:06:08,840 And we are defining remote areas which rather 5 belongs to and that's it. 50 00:06:13,130 --> 00:06:21,920 These comments are enough to point and Eby GP membership image appearing between two rodders rather 51 00:06:21,920 --> 00:06:23,660 four and rather five. 52 00:06:23,810 --> 00:06:29,590 But image European neighbors must be directly connected. 53 00:06:29,990 --> 00:06:41,240 But if I want to make peering between the loopback addresses of these images appearing Peerce rather 54 00:06:41,250 --> 00:06:47,220 four out of five I need to use neighbor 55 00:06:50,380 --> 00:07:04,660 the neighbor IP address and even AGP multi up to call maps for this to ralliers. 56 00:07:04,970 --> 00:07:15,640 OK it's OK when I try to make it period but when the this line but if I want to make this guy's Pyr 57 00:07:15,740 --> 00:07:24,410 from our day or look becs I need to use BGP more to hope command because of the image repinning should 58 00:07:24,410 --> 00:07:26,980 be made directly connected. 59 00:07:27,290 --> 00:07:31,390 Ok I am using the image multi hope command. 60 00:07:31,400 --> 00:07:33,290 Or do I need to use. 61 00:07:33,290 --> 00:07:37,820 Do I need to peer the loopback IP address as always. 62 00:07:37,850 --> 00:07:46,180 No many times no on eBay Gippi we are just peering with our interface addresses. 63 00:07:46,220 --> 00:07:48,070 Normally but you can. 64 00:07:48,070 --> 00:07:57,130 Faced with this question on this is exam and the answer is the BJP must help OK. 65 00:07:57,530 --> 00:08:00,210 Let's take a look to the eye. 66 00:08:00,220 --> 00:08:14,940 BGP configuration is in this map aka what we have done in here is rather BGP and Oaten on some number. 67 00:08:14,940 --> 00:08:25,430 We are going to train to make appearing within rather 104 and IBG peers do not have to be directly connected. 68 00:08:25,430 --> 00:08:32,980 Please keep in mind that there is no problem if they are not Tyreke to connect that are OK. 69 00:08:33,530 --> 00:08:39,560 What they're doing is defining a neighbor's statement neighbor one vote on one which is the loopback 70 00:08:39,560 --> 00:08:42,950 IP address of the other one again. 71 00:08:43,930 --> 00:08:56,450 An undefined neighbor of 4 4 4 4 4 rather 1 as a neighbor and we are using a remote as number of the 72 00:08:56,870 --> 00:08:58,520 same answers in here. 73 00:08:58,520 --> 00:09:10,240 As you can see OK but commands in the configuration too are not enough to establish neighborhoods in 74 00:09:10,240 --> 00:09:11,970 the same autonomous systems. 75 00:09:11,980 --> 00:09:24,610 Our look back because rather for can send packets to rather one from this direction or from that direction. 76 00:09:25,180 --> 00:09:32,100 As you can see rather one however knows the neighboring Luebeck with the IP address for for for for 77 00:09:32,410 --> 00:09:42,480 for this reason we need to use update source loopback command for the IBG preparing our little packs 78 00:09:42,490 --> 00:09:43,210 for example. 79 00:09:43,210 --> 00:09:54,360 I need to type 2 rather one neighbor 4 4 4 4 updates as 80 00:09:57,710 --> 00:10:05,960 look Pechora and the same conversation must be made on rather for to neighbor one more moment with an 81 00:10:06,020 --> 00:10:09,350 update source of little back zero. 82 00:10:09,680 --> 00:10:10,880 OK. 83 00:10:11,030 --> 00:10:15,930 That's the IBG appearing overload back. 84 00:10:16,150 --> 00:10:19,870 And let's take a look to the BJP configuration right now. 85 00:10:21,660 --> 00:10:22,810 Let's try it. 86 00:10:22,830 --> 00:10:27,930 Edward Tai's the BJP route using the N word commands. 87 00:10:28,650 --> 00:10:34,490 You can advertise them BGP Roths with two options. 88 00:10:34,530 --> 00:10:37,090 The first one is the network command. 89 00:10:37,560 --> 00:10:41,360 And the second one is red is derivation 90 00:10:44,890 --> 00:10:45,760 in your word. 91 00:10:45,770 --> 00:10:47,470 Take a look to the network command. 92 00:10:47,500 --> 00:10:53,480 And in here we are going to check the at all right. 93 00:10:54,330 --> 00:10:55,920 In the first Gulf aggression 94 00:10:59,030 --> 00:11:00,880 we are doing the same thing. 95 00:11:00,970 --> 00:11:02,290 Or rather five. 96 00:11:02,300 --> 00:11:02,850 OK. 97 00:11:02,850 --> 00:11:12,450 Rather BGP and autonomous than number and as you can see in here local area networks behind this guy 98 00:11:12,810 --> 00:11:30,080 are 50 0 0 1 slice 204 and 200 m 1 1 2 6 0 slice 21. 99 00:11:30,210 --> 00:11:31,880 All right. 100 00:11:31,970 --> 00:11:35,320 Here is my network that I need to advertise. 101 00:11:35,330 --> 00:11:49,040 But if I use this think network 15 000 or just this one is not perfect because it all as well as all 102 00:11:49,040 --> 00:11:52,950 three of these on the Internet. 103 00:11:53,120 --> 00:12:05,770 We're going to use for this conversation what we need to use is network 50 of 1 1 0 and mask 104 00:12:08,550 --> 00:12:13,170 255 255 255. 105 00:12:13,260 --> 00:12:14,790 That zero command. 106 00:12:14,790 --> 00:12:15,900 That's the whole come up. 107 00:12:15,900 --> 00:12:18,780 We don't prefer this one guys. 108 00:12:19,280 --> 00:12:24,910 We are using network and network number and mass keyword. 109 00:12:25,350 --> 00:12:28,870 And this something that mask that's the whole thing. 110 00:12:30,680 --> 00:12:39,870 Secondly let's try to advertise the route using redistribution in configuration steps 3 and 4. 111 00:12:39,870 --> 00:12:43,620 We describe this let's do this. 112 00:12:43,700 --> 00:12:48,300 We don't want to advertise this range. 113 00:12:48,620 --> 00:12:51,960 1 1 1 and 114 00:12:56,050 --> 00:12:56,860 sorry 115 00:13:01,220 --> 00:13:07,110 1 0 2 0 0 3 0 and 4 0. 116 00:13:07,240 --> 00:13:18,010 OK I don't want to advertise these guys but I'm going to advertise 5 and 6 from rather 5 to the BGP 117 00:13:18,740 --> 00:13:22,480 Arka let's advertise this Perovic says 118 00:13:25,680 --> 00:13:30,340 and let's do not advertise the 5th 0 and 6 0. 119 00:13:30,690 --> 00:13:41,950 OK as you can see that I define access list any year which hitting the 1 2 3 4 networks then I'm permitting 120 00:13:42,520 --> 00:13:53,050 all the other routes then in the route map I matching this IP address which covers one to three and 121 00:13:53,050 --> 00:14:05,770 four networks then I'm going under the BGP and typing redistribute connected and around the filter which 122 00:14:05,770 --> 00:14:19,370 means that cell the this IP addresses to the BGP domain. 123 00:14:19,380 --> 00:14:28,740 All right let's see how we can examine the BJP table to the command is shoy IPV Gippi in here. 124 00:14:28,870 --> 00:14:41,140 You can see something star will give you an upgrade there damali stum means this rather is valid. 125 00:14:41,390 --> 00:14:45,470 OK I can install this drop to my writing table 126 00:14:47,800 --> 00:14:50,550 Degrader then Volin. 127 00:14:50,580 --> 00:14:52,970 Is that's the best path. 128 00:14:53,920 --> 00:14:54,980 OK. 129 00:14:55,880 --> 00:15:06,560 For example let's take a look to the this throughout I'm learning this throughout from here and here 130 00:15:06,590 --> 00:15:11,770 and a year and a year. 131 00:15:11,850 --> 00:15:15,380 But this one is valid. 132 00:15:15,390 --> 00:15:19,610 And the best drug which I am learning from this past 133 00:15:23,120 --> 00:15:31,140 so I can use the show by PBG summary command as well to take a look to the neighbors BGP neighbors. 134 00:15:31,250 --> 00:15:38,820 We can check the neighbor neighbor table by using the Troy PBG summary and we can take a look. 135 00:15:38,820 --> 00:15:45,770 Our BGP neighbors these are the IP addresses of our neighbors. 136 00:15:45,800 --> 00:15:49,580 These are the auto immune systems of our neighbors. 137 00:15:50,030 --> 00:15:59,220 And these are the times showing that up down how long the session has been up. 138 00:15:59,700 --> 00:16:05,800 And these are the number of the perfect sense that we are sharing with our neighbors. 139 00:16:05,820 --> 00:16:16,620 If I don't use any network or redistributes that mom here will be zero or just OK. 140 00:16:16,650 --> 00:16:21,430 Let's let's talk about the next self image. 141 00:16:21,560 --> 00:16:31,450 Pier Changs then next stop and advertised rather but IBG pier does not change. 142 00:16:31,460 --> 00:16:35,680 The next stop address on advertising rather. 143 00:16:36,150 --> 00:16:37,420 All right. 144 00:16:37,420 --> 00:16:45,510 For example rather five makes the next hope it's while sending out but rather for does not change the 145 00:16:45,520 --> 00:16:49,090 next of violent advertising to other one. 146 00:16:49,750 --> 00:16:55,810 So for a solution we need to use next top self command. 147 00:16:55,950 --> 00:16:58,260 And here's the usage of the command. 148 00:16:58,280 --> 00:17:03,200 Neighbor one mom won and next top self.