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Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:01,190 --> 00:00:04,500 In the section we're going to talk about h s r b protocol 2 00:00:07,190 --> 00:00:14,660 first top redundancy Perko F. H R P is a computer networking protocol which is designed to protect the 3 00:00:14,660 --> 00:00:20,990 default gateway used on some network by allowing two or more hours to provide backup for the address 4 00:00:21,320 --> 00:00:27,380 in the event of a failure of an active rather the backup brother will take over the address usually 5 00:00:27,380 --> 00:00:29,940 within a few seconds. 6 00:00:30,050 --> 00:00:37,520 In practice such protocols can also be used to protect other services operating on a single IP address. 7 00:00:37,610 --> 00:00:39,470 Not just rodders 8 00:00:42,810 --> 00:00:49,890 hot Stemberg rather protocol HRP is a running protocol that allows a host computers on the internet 9 00:00:49,890 --> 00:00:56,160 to use multiple rather that act as a single virtual rather maintaining the connectivity even if the 10 00:00:56,160 --> 00:01:03,780 first hop rather fails because other mothers are on standby and they're ready to go. 11 00:01:03,780 --> 00:01:12,280 Rachel I.P and Emeka races are shared between the two brothers and there is no load balancing and were 12 00:01:12,290 --> 00:01:15,420 fired by the Sjostrom by command. 13 00:01:15,870 --> 00:01:22,760 As you can see that in our figure we have two others and they are rather one and rather two. 14 00:01:22,860 --> 00:01:35,480 And please pay attention that I'm using edgers are paid to protect to default gateway for here and here. 15 00:01:36,870 --> 00:01:46,570 If there is a problem in that rudders this interface or if that rather fails completely for example 16 00:01:47,170 --> 00:01:54,430 we can have an power unit problem or we can have a cable problem in the interface connecting between 17 00:01:54,430 --> 00:02:05,070 switch and the router if this rather is the active one the HSR protocol will switch the traffic to the 18 00:02:05,670 --> 00:02:07,430 Sambre of. 19 00:02:07,890 --> 00:02:10,950 This is actually what HRP is doing. 20 00:02:11,310 --> 00:02:13,500 But there is no load balancing. 21 00:02:13,500 --> 00:02:22,350 As I said for example if this one is active for other rather one is the act of further traffic flows 22 00:02:22,440 --> 00:02:29,590 in that direction and there is no packet in here. 23 00:02:30,240 --> 00:02:37,120 When this guy fails the traffic is switched to this direction. 24 00:02:40,180 --> 00:02:49,760 And if I call for your preemption on rather wan. 25 00:02:50,080 --> 00:02:57,610 For example let's say that I have fixed the power unit problem and if I configured preemption as well 26 00:02:58,150 --> 00:03:01,270 this rather will become the active gateway again. 27 00:03:01,330 --> 00:03:07,230 And this guy will act as a standby. 28 00:03:07,410 --> 00:03:16,230 So let's take a look how we select the active and the standby gateways in the aitches happy as you can 29 00:03:16,230 --> 00:03:23,490 see that in the figure we have two brothers again and the router with their highest IP address will 30 00:03:23,490 --> 00:03:32,220 be active by default but the selection can be changed with the HSR property value rather with the highest 31 00:03:32,260 --> 00:03:41,300 etches happy price to Wolley becomes active and default property value is 100 the active and the stem 32 00:03:41,300 --> 00:03:44,580 brothers send the helo packets to the aitches or peer group mouth. 33 00:03:44,600 --> 00:03:47,450 Guess others in 3 seconds. 34 00:03:47,670 --> 00:03:54,340 If the help Pecka does not arrive in 10 seconds the standby rather becomes active. 35 00:03:54,930 --> 00:04:05,020 OK let's say that this guy is active again and this guy has standby. 36 00:04:05,300 --> 00:04:17,290 If I want to change the roles if I want to make this guy as an active I need to increase the price to 37 00:04:17,300 --> 00:04:29,030 all the office rather when I think his approach to all of you this guy will be active and traffic will 38 00:04:29,050 --> 00:04:30,020 follow. 39 00:04:30,920 --> 00:04:43,450 In this direction is that of this direction in HS or the active gateway propagates this Mechel us and 40 00:04:43,450 --> 00:04:58,230 SES that hey guys use this mac address widget x x is the atheist or peer group identifier to reach the 41 00:04:58,950 --> 00:05:02,580 IP address which is HAARP. 42 00:05:02,780 --> 00:05:06,610 By IP. 43 00:05:06,640 --> 00:05:08,170 Let's talk about the topology. 44 00:05:08,170 --> 00:05:14,730 Now we have a PC in here which has an IP address of 10. 45 00:05:14,770 --> 00:05:21,050 That 100 the gateway address of the PC is 10 to 1. 46 00:05:21,090 --> 00:05:33,620 And please pay attention that that's the HSR IP IP so I'm at I'm going to attach these I address to 47 00:05:33,660 --> 00:05:41,330 this interface of the rather one and I'm going to attach this IP address to this interface of rather. 48 00:05:41,340 --> 00:05:50,490 True and I'm going to attach S10 by IP for both of them and that's going to be turned up one and I'm 49 00:05:50,490 --> 00:05:54,260 going to define the gateway as Tanda one. 50 00:05:54,580 --> 00:06:02,130 So what the thing about this for example why I'm not attaching the tender to as Gateway let's say that 51 00:06:02,140 --> 00:06:14,090 the good ways tend to if good they will be turned up to ival follow this line to send the packets to 52 00:06:14,410 --> 00:06:15,990 weather and that work great. 53 00:06:17,330 --> 00:06:23,960 But when these rather fails if this if there is a problem with this rather in at work 54 00:06:26,610 --> 00:06:33,550 because of the 10 that too will fail also Also I wouldn't go to why they're in that work. 55 00:06:34,780 --> 00:06:46,200 But if I can figure this one whenever this rather Frails rather too will be active for other and take 56 00:06:46,590 --> 00:06:54,700 effect on trade and I'm going to reduce the weather in at work again without any interruption. 57 00:06:55,630 --> 00:06:58,750 Let's take a look to the preemption feature. 58 00:06:59,170 --> 00:07:06,400 If the active role of fails the standby rather is activated and it remains active even if the previous 59 00:07:06,580 --> 00:07:14,890 active rather is return preemption process forces rather to a new HSR P selection. 60 00:07:17,690 --> 00:07:20,770 And here are the states of the HSR brothers. 61 00:07:20,780 --> 00:07:25,860 We have six six states and the first phase is initial. 62 00:07:25,970 --> 00:07:30,140 This is the beginning state that indicates HAARP is not running. 63 00:07:30,140 --> 00:07:37,220 It happens when the configuration changes or the interface is first turned on in the last day rather 64 00:07:37,220 --> 00:07:43,370 has not at all my the virtual IP address and has not yet seen an authenticated helo message from the 65 00:07:43,370 --> 00:07:46,080 active rudder in this state. 66 00:07:46,100 --> 00:07:53,980 Rather we'll still wait to hear from the active rather in the listening state rather knows. 67 00:07:54,010 --> 00:07:56,880 But IPN makers of the ritual rather. 68 00:07:57,000 --> 00:08:02,880 But it's not the active or standby in this big state. 69 00:08:02,890 --> 00:08:10,620 Rather sends periodic etches Arpey hello's and participates in the action of active or standby rather 70 00:08:11,820 --> 00:08:19,260 in a standby state rather mudders how low packets from the active for other and it will take the active 71 00:08:19,260 --> 00:08:26,940 state and the current active Crowder fails and in the active state through other forward packets that 72 00:08:26,940 --> 00:08:36,780 are sent to the HRP group the rudder also sends periodic helo message's. 73 00:08:36,910 --> 00:08:40,650 And here is the configuration of the HSR. 74 00:08:41,040 --> 00:08:47,640 First I need to fix the IP addresses for my configuration. 75 00:08:48,060 --> 00:08:50,550 The IP address in here is 76 00:08:53,570 --> 00:08:54,680 thirty two. 77 00:08:54,700 --> 00:09:02,600 And here is thought that Tori and my get Gateway s 78 00:09:06,520 --> 00:09:10,930 third it up 1 and my H R P is also 79 00:09:14,730 --> 00:09:23,520 they they're doing the configuration is ongoing under the interface mode and I'm assigning the IP addresses 80 00:09:25,600 --> 00:09:34,890 at thirded up to and third that three to the physico interfaces. 81 00:09:34,990 --> 00:09:38,190 These are four here and four here. 82 00:09:38,830 --> 00:09:52,290 Then I'm going to attach the standby IP by using standby and some by group number and IP and the IP 83 00:09:52,290 --> 00:10:04,960 address OK I'm doing the same thing on rather to to I just heard two different configurations for rather 84 00:10:04,960 --> 00:10:12,200 one in here sent by one Pertti 150. 85 00:10:12,210 --> 00:10:21,080 This line shows me that rather one is the active for for this HAARP topology. 86 00:10:21,720 --> 00:10:30,750 Because of the default volley of the press it is 100 if I choose the 150. 87 00:10:30,820 --> 00:10:42,090 This guy will be active from here as you can see that I taps them by wump preempt command which means 88 00:10:42,780 --> 00:10:45,360 I configured the preemption. 89 00:10:45,690 --> 00:10:48,840 For example if this rather fails 90 00:10:51,830 --> 00:11:00,990 this guy will be active from but when this rudder is back this guy will be ystem by again. 91 00:11:01,010 --> 00:11:12,380 And rather one will be active because configure the preemption 12:5 Daiches IP configuration. 92 00:11:12,470 --> 00:11:20,780 I'm using the show standby command and I can see the group number State active virtual Mac address and 93 00:11:20,800 --> 00:11:23,630 standby by others IP as well. 94 00:11:23,630 --> 00:11:31,970 By typing this shows on by comment I can use different good ways for different real. 95 00:11:32,410 --> 00:11:33,920 In HS are paid to. 96 00:11:34,210 --> 00:11:38,250 And this is what multa group HAARP is doing for me. 97 00:11:39,310 --> 00:11:54,360 For example for Villon tem and reelin 20 I'm using this guy as primary and I'm using this guy as the 98 00:11:54,450 --> 00:11:58,380 second word for willen 20 million 10. 99 00:11:58,860 --> 00:12:02,710 Then I'm getting under the interface we learn. 100 00:12:03,150 --> 00:12:12,560 For example interface will antenne I'm attaching air lower priority for real antenna and high priority 101 00:12:12,890 --> 00:12:18,880 for me than 20 which means this is going to be active for Villa 20. 102 00:12:19,020 --> 00:12:23,920 And this is going to be in standby mode for the we learn Ted 103 00:12:28,290 --> 00:12:35,940 etches R.P. has another great feature that is known as Sarpy interface trecking. 104 00:12:36,660 --> 00:12:46,320 As I told you in the first flight Sarpy always is responsible for protecting the default gateway interfaces 105 00:12:47,920 --> 00:12:56,500 but when I try to connect the internet I have also these interfaces as well. 106 00:12:59,070 --> 00:13:10,470 So what or is doing without interference trecking HAARP is watching that if this interface is up or 107 00:13:10,830 --> 00:13:11,820 not. 108 00:13:13,470 --> 00:13:30,530 If this interface fails for example if serial 0 0 interface fails what HSR is doing this is DiClemente 109 00:13:30,530 --> 00:13:37,320 profitable for one and rather b is becoming the active for others. 110 00:13:37,320 --> 00:13:40,470 So I'm not having an interruption. 111 00:13:40,540 --> 00:13:44,910 So traffic is flowing in this direction. 112 00:13:49,470 --> 00:13:53,890 So another thing that HAARP can do is object tracking. 113 00:13:54,180 --> 00:14:03,890 For example let's say that I have not problem in this in this interface to and everything is OK in my 114 00:14:03,890 --> 00:14:05,260 local area network. 115 00:14:05,330 --> 00:14:14,240 Here is my local area work my rudder is working fine and there is no problem in this interface or this 116 00:14:14,240 --> 00:14:14,870 interface. 117 00:14:14,930 --> 00:14:20,300 Everything is OK but there may be a problem on the 118 00:14:24,100 --> 00:14:27,190 ISP network. 119 00:14:27,560 --> 00:14:38,730 Maybe I hower central router in here that I'm collecting the traffic from the branch offices but HAARP 120 00:14:38,850 --> 00:14:40,310 object tracking does. 121 00:14:40,350 --> 00:14:51,250 I can think here these interfaces of my HQ router and if pink fails to the HQ rather 122 00:14:54,450 --> 00:15:04,060 I can't change the traffic pattern again and maybe I can use another ISP and and Central rather and 123 00:15:04,600 --> 00:15:07,270 so that my traffic won't interrupt 124 00:15:09,920 --> 00:15:12,520 object traffic conflagration as well. 125 00:15:13,900 --> 00:15:25,150 Under-funding and I personally and I'm trying to pin this IP address as you can see that I have a local 126 00:15:25,150 --> 00:15:27,610 area in which I have rather one and rather two. 127 00:15:27,630 --> 00:15:35,000 And on the other side I have a corridor which is an IP address or from what 128 00:15:38,550 --> 00:15:47,760 them under-funding for frequency which means that I'm going to ping here each five seconds then I'm 129 00:15:47,760 --> 00:15:53,220 defining the start and the finish time of the HSR. 130 00:15:53,260 --> 00:16:03,260 I'm sorry I personally then I'm trecking does IPA Salei. 131 00:16:03,410 --> 00:16:10,170 And whenever there's a problem I'm going to decrement the probes really. 132 00:16:10,180 --> 00:16:14,810 And the other rudder will switch as the active 133 00:16:19,710 --> 00:16:20,690 etches are people. 134 00:16:20,690 --> 00:16:25,100 Is the following two types of authentication and their plaintext. 135 00:16:25,150 --> 00:16:33,350 And they end the five if you want to configure and the first you can use the semigroup authentication 136 00:16:33,600 --> 00:16:42,070 and the five keys ring and the keystream number in this thread the group number is arbitrary you can 137 00:16:42,080 --> 00:16:50,230 choose anything that you want if you want to configure a plaintext you can use them by for example one 138 00:16:50,290 --> 00:17:00,280 authentication and you can use the string that you want all rather in a HRP group send hello pickup's 139 00:17:00,750 --> 00:17:06,850 by default the helo timer is set to three seconds and the timer is set to 10 seconds. 140 00:17:06,900 --> 00:17:13,110 It means that a hello packet is sent but when the errors are pissed then by group devices every three 141 00:17:13,110 --> 00:17:20,820 seconds and the standby the West becomes active and help back up has not been listed for 10 seconds. 142 00:17:20,850 --> 00:17:30,160 If you want to modify the helo and Houlton timer you can use standby semigroup number timers and Helo 143 00:17:30,180 --> 00:17:35,310 time or time command. 144 00:17:35,330 --> 00:17:41,180 There are two versions of the HRP and they are version 1 and the version 2 version 1 is the default 145 00:17:41,180 --> 00:17:49,880 version of the protocol aitches IP version 2 ellos group numbers up up to 4000 and 96 thus allowing 146 00:17:49,880 --> 00:17:52,860 you to use Villere number as the group number. 147 00:17:53,210 --> 00:17:57,330 All devices in an ancient happy group must have the same version configured. 148 00:17:57,370 --> 00:18:00,190 Otherwise are elements masses are not on to. 16078

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