1 00:00:00,300 --> 00:00:03,880 Intersection we are not talking about local or in app or redundancy. 2 00:00:04,030 --> 00:00:11,970 And we'll talk about spending three protocols in the first chapter take taken over we look to the spanning 3 00:00:11,970 --> 00:00:16,840 tree in the second day and on talk about spending three types in touch up there. 4 00:00:16,840 --> 00:00:20,790 We'll talk about the configuration of spending three and in the future. 5 00:00:20,870 --> 00:00:25,160 We are going to talk about first up redundancy protocols. 6 00:00:25,320 --> 00:00:27,910 And let's go with this painting. 7 00:00:28,010 --> 00:00:33,260 Tree the first line is talking about why it's penny tree. 8 00:00:33,450 --> 00:00:41,780 Either that frames don't have a TTL value so they can move between switches eternally because of that 9 00:00:42,060 --> 00:00:44,910 you can't face with broadcast storms. 10 00:00:45,020 --> 00:00:49,250 For example let's say that PC Awam sends broadcast 11 00:00:52,170 --> 00:01:01,990 to our network because if that's a broadcast pickup artist which takes the packet and flew it from its 12 00:01:02,140 --> 00:01:12,610 all ports or if it comes to the switch to switch to also takes the pickup and flew it from here. 13 00:01:13,050 --> 00:01:14,920 And so which three also takes the spika. 14 00:01:15,270 --> 00:01:17,220 And because of that broken packet. 15 00:01:17,610 --> 00:01:26,130 This is going to flip is also and other food bill become also on that way. 16 00:01:26,540 --> 00:01:33,530 And as you can see that meeting face with the broadcast tones to people is it like that because internet 17 00:01:33,530 --> 00:01:35,580 friends don't have time to leave. 18 00:01:35,700 --> 00:01:42,300 But the the other thing that we need spending three. 19 00:01:42,460 --> 00:01:51,360 The other answer to this question is we confess with the unicast topic that frames for example PC I'm 20 00:01:51,360 --> 00:01:53,070 trying to send the frame to PC to 21 00:01:56,750 --> 00:02:05,630 switch one knows that PC one is on its fast internet Zoravar import but so the phone has no idea about 22 00:02:05,630 --> 00:02:08,860 PC because of that. 23 00:02:09,050 --> 00:02:20,020 So each one will flip the traffic out from its other parts the traffic going that way and it will go 24 00:02:20,020 --> 00:02:28,250 in this Balzer after pickup loop frame will come to the Sims 2 and switch to us so we will send the 25 00:02:28,250 --> 00:02:33,220 packet to switch 3 and it will send the packet to Pewsey too. 26 00:02:33,740 --> 00:02:39,710 But from here we have to send for him to come in to see his. 27 00:02:39,890 --> 00:02:44,120 So we also sent this packet for him to his to. 28 00:02:44,600 --> 00:02:49,780 So we are going to face that unicast the liquid frames on the switch. 29 00:02:49,880 --> 00:03:00,360 I'm sorry PC to so but spending three per pupil is that building a logical loop free topology for Internet 30 00:03:00,360 --> 00:03:07,980 that works by blocking some of porch swing through protocol ellos that are designed to include redundant 31 00:03:08,040 --> 00:03:13,080 links to provide automatic backup paths if an active links fails also. 32 00:03:14,530 --> 00:03:23,090 Listening up we are sending a broadcast again from PC via 3G one takes the traffic and follows it from 33 00:03:24,290 --> 00:03:29,030 this park and also is going to be a fluke from this book. 34 00:03:30,060 --> 00:03:37,380 But because of this port is blocked by having three different the traffic will not pass through this 35 00:03:37,380 --> 00:03:42,620 way and it wont go to the switch three from this May. 36 00:03:42,680 --> 00:03:51,850 So all in the green traffic will come to the switch three and will effect the PC to 37 00:03:54,780 --> 00:04:00,170 we are two year olds three patrols in spanning three. 38 00:04:00,210 --> 00:04:12,850 The first one is the route ports closest port to the route which is reports but please pay attention 39 00:04:12,860 --> 00:04:21,260 to that closest to the bridge in terms of pepped cause the road bridge which I'm going to tell you about 40 00:04:21,260 --> 00:04:21,590 this. 41 00:04:21,650 --> 00:04:24,780 What is Pepperpot. 42 00:04:24,870 --> 00:04:34,220 And we have also designate ports which mean the boats that are going to have to forwarding the traffic 43 00:04:35,520 --> 00:04:40,050 and we have none designated port which means a blocked port. 44 00:04:41,440 --> 00:04:47,540 As you can see that in here first it turns one is blocked. 45 00:04:47,620 --> 00:04:50,210 So that role is not needed. 46 00:04:52,240 --> 00:04:54,610 Presence there at 0 2 3 and 4 47 00:05:00,510 --> 00:05:06,860 are designated ports which continue the forward terrific and 48 00:05:12,060 --> 00:05:23,390 these are the reports because if they are close to the root page in terms of cost but you. 49 00:05:23,470 --> 00:05:32,100 So let's take a look to how we can elect the proper age to elect the root bridge into that work. 50 00:05:32,270 --> 00:05:42,960 We need to define the law was bridge idea to find the bridge idea we are using prewar level you and 51 00:05:43,580 --> 00:05:51,430 Matt and they're using an system id to support them for STPI. 52 00:05:51,630 --> 00:05:59,630 But in most cases we are not going to use these you calculate the Berjaya. 53 00:05:59,680 --> 00:06:08,710 Please keep in mind that before proceeding through volume for sewage is the swan and Brits use spatial 54 00:06:08,710 --> 00:06:17,320 data friends called BPT you to exchange information about bridge IDs and repair costs. 55 00:06:18,580 --> 00:06:24,710 So let's take a look at this example and let's try to determine the road bridge. 56 00:06:24,790 --> 00:06:32,320 The first thing we need to check is priority value as you can see that in the figure priority values 57 00:06:32,500 --> 00:06:37,240 are same for suites. 58 00:06:37,250 --> 00:06:45,750 So second thing to check is Mekka address because if we need to find the lowest bridge ID we need to 59 00:06:45,750 --> 00:06:54,550 find the lowest make up address this image which has the lowest make up this will be our route in scenario. 60 00:06:55,120 --> 00:06:56,020 If you check here 61 00:07:00,000 --> 00:07:06,320 this nigga address is 0 0 1 7 0 0 2 4 which is bigger. 62 00:07:06,330 --> 00:07:14,410 So I estimate that this this is beginning meet with first and I mean this also and this is beginning 63 00:07:14,410 --> 00:07:15,680 mid 0 0 1. 64 00:07:15,700 --> 00:07:24,350 This is 7 but this is a day is coming after 9:00 at the hexadecimal format. 65 00:07:24,840 --> 00:07:34,970 So I'm eliminating this and because of this which has the lowest McCullough's it's the bridge. 66 00:07:35,010 --> 00:07:42,400 So now let's take a look to the spanning three parts are spanning three path cars spanning three. 67 00:07:42,400 --> 00:07:50,180 Cost value is inversely proportional to the Associated benefit of the path and therefore pepped with 68 00:07:50,180 --> 00:07:58,380 a low cost value is more preferrable than a path with a high cost value as you can determine from this 69 00:07:58,380 --> 00:08:02,060 chart to hauliers 70 00:08:05,580 --> 00:08:19,740 leaks with shows us a lower cost but the K as you can see in the picture in SATB I'm taking a ten g 71 00:08:19,980 --> 00:08:23,450 per second blink as a cost will be of one. 72 00:08:23,760 --> 00:08:29,820 And I'm taking a one year goal so it costs a little fun but I'm taking a 10 minute per second which 73 00:08:29,820 --> 00:08:36,670 is a slower path has a higher cost really as you can see that we have a reverse logic in here. 74 00:08:38,280 --> 00:08:48,710 So if you check the pet one the cost of pet run is according to the reverse I believe specifications. 75 00:08:48,970 --> 00:08:57,360 These rollies were way ribeyes Soviero except this one now. 76 00:08:57,370 --> 00:09:06,160 So let's take a look to the cost of pets one pet one has to first it's in the links 77 00:09:09,180 --> 00:09:13,190 so it's best value. 78 00:09:14,210 --> 00:09:18,880 It's cost well who is Manti. 79 00:09:19,030 --> 00:09:20,210 Let's go to the Ped. 80 00:09:20,210 --> 00:09:29,830 Do we have to face the do links together and we have another face to visit links together. 81 00:09:31,180 --> 00:09:41,080 Which means we are of course full of 19:4 Bob and the whole coast valley of path too is sorted. 82 00:09:41,350 --> 00:09:48,400 So pet one is pretty per hour path to. 83 00:09:48,520 --> 00:09:56,270 So we have a question in here which is which is the roots and remind the Paul groves. 84 00:09:56,290 --> 00:10:01,070 The question is saying that because of the priorities are same 85 00:10:03,780 --> 00:10:05,490 I need to check the last make up of this 86 00:10:08,700 --> 00:10:15,580 and lowest Mickolus is on switch 3 0 0 Well Mom 87 00:10:18,640 --> 00:10:25,550 it's 0 or but the top thing is three in here which is the lowest. 88 00:10:25,750 --> 00:10:27,280 And that shows us this is our 89 00:10:29,920 --> 00:10:30,550 Ruperts 90 00:10:39,510 --> 00:10:43,600 as I told you that 33 is the lowest which most make out low. 91 00:10:43,700 --> 00:10:50,950 I couldn't speak so which three is the bridge because it has the lowest neck and priorities equal analysts 92 00:10:50,970 --> 00:10:55,610 they look to the portraits. 93 00:10:55,680 --> 00:10:56,730 This is my Ruperts 94 00:10:59,640 --> 00:11:05,300 the closest port to the rude bridge from a pet costs. 95 00:11:05,350 --> 00:11:10,370 Valid point of view will be the report for each search. 96 00:11:10,450 --> 00:11:14,830 For example let's check each one here. 97 00:11:14,840 --> 00:11:26,110 We have a fast internet pet to get here which means my cost is just like but if I want to get from this 98 00:11:26,110 --> 00:11:31,820 way I need to pass first Shigo a geological survey and June of last week. 99 00:11:31,930 --> 00:11:34,360 Which means higher costs for me. 100 00:11:34,510 --> 00:11:42,550 And this is the root port for each one and force of for here. 101 00:11:42,650 --> 00:11:46,520 This is the report and so it's true. 102 00:11:46,920 --> 00:11:56,560 This is the box because this is a Jigar and Gigia and Fest's way but here this is a genuine first rate. 103 00:11:56,730 --> 00:11:59,870 But this path is first and Festac. 104 00:12:00,570 --> 00:12:02,670 So Jika is Prester. 105 00:12:02,670 --> 00:12:04,630 So this is our road for 106 00:12:09,040 --> 00:12:11,810 OKB didn't mind our reports. 107 00:12:11,830 --> 00:12:18,720 Please keep in mind that for each segment I should have a designated port. 108 00:12:19,150 --> 00:12:29,500 And please keep in mind this to my look breeds port ports are always in the designate mark. 109 00:12:29,640 --> 00:12:36,850 So I'm going to my sewage and writing the poor girls as designate OK 110 00:12:39,560 --> 00:12:41,140 that's mine. 111 00:12:41,420 --> 00:12:48,350 Well and what I told you is for each segment for each leg. 112 00:12:48,350 --> 00:12:55,680 BITTMAN Swades Mishal Hello designate the port so because of this is Ruport in here. 113 00:12:55,680 --> 00:13:01,770 This is going to be the designated to a here is look at it. 114 00:13:02,250 --> 00:13:05,100 Now we just need that through mine. 115 00:13:07,170 --> 00:13:15,720 This toolbox now I'm comparing switch one and switch to I'm going to choose one of these ports as designated. 116 00:13:16,130 --> 00:13:25,520 And one of these ports will be Nahm designator which means Blug port Jules Verne I'm going to blog. 117 00:13:25,580 --> 00:13:34,540 I'm comparing these two devices priority and I see that they are saying and secondly I'm comparing their 118 00:13:34,780 --> 00:13:42,510 mac addresses the lowest Mikka address will not be blocked as you can see in the picture. 119 00:13:42,590 --> 00:13:49,820 So which one has lower MAC address because of that First-Lieutenant 0 2 or so each one will be designated 120 00:13:49,820 --> 00:13:59,310 for an this part of the switch to 0 2 will be non designator and block. 121 00:14:03,430 --> 00:14:05,670 Let's take a look at Spain three types. 122 00:14:05,740 --> 00:14:07,490 We have. 123 00:14:08,080 --> 00:14:18,950 We have POAD billion spending three rated spending three rapid turbulence Benni tree and MSCP when me 124 00:14:18,960 --> 00:14:20,380 take a look at the difference when the 125 00:14:23,260 --> 00:14:34,370 for S2P 3 calculation is meant for all freelance but four per meal and spanning three three calculation 126 00:14:34,400 --> 00:14:46,440 is made by is made for Per and MSCP is all of our CCMA exams called solar cycle to the previous the 127 00:14:46,590 --> 00:14:47,150 period. 128 00:14:47,150 --> 00:14:50,370 These are Cisco propria pretty technology. 129 00:14:50,490 --> 00:14:56,580 And that creates separate spanning tree for each wheeler and campaign for them. 130 00:14:56,670 --> 00:15:08,030 BLOCK balancing for example this port of this image can be a forwarding port for Reno man but Temby 131 00:15:08,060 --> 00:15:16,960 is blocking for port for we land to as you see that I'm calculating instances separately for each meal. 132 00:15:18,940 --> 00:15:24,810 And let's take a look to the red per and spending three protocol which brought significantly faster 133 00:15:24,810 --> 00:15:33,360 spank through the convergence of threat topology change four days previous D-plus using edge ports and 134 00:15:33,510 --> 00:15:42,860 willing types and PTSD create separate spring free for each villain and can perform a lot balancing 135 00:15:46,080 --> 00:15:52,570 and we have some different states and poor roles for STPI and rapid spin to put the code. 136 00:15:52,810 --> 00:15:57,060 We're just discovering learning and forwarding States for R.S.V.P.. 137 00:15:57,210 --> 00:16:03,910 But we have same old blocking listening learning and forward States for STPI so portals are a route 138 00:16:04,000 --> 00:16:11,920 designated them blocked for as the B but Aristippus we have room designated alternate backup and disable 139 00:16:11,930 --> 00:16:12,720 portables or 140 00:16:16,260 --> 00:16:18,280 and let's take a look to the Reppert previous. 141 00:16:18,270 --> 00:16:27,770 The plus edge ports switch ports that are not connected with a switch are edge ports as you can see 142 00:16:27,770 --> 00:16:34,870 in the figure this sewage port is connected to and others which this switchboard also connected to another 143 00:16:34,870 --> 00:16:35,200 switch. 144 00:16:35,200 --> 00:16:44,270 But here on here on Connect the Pacific they are just connect to the PC. 145 00:16:44,330 --> 00:16:54,730 So if there is a change in topology this ports immediately translates to forwarding state and so that 146 00:16:54,730 --> 00:17:00,750 provides us air plus agents exports don't generate topology chance. 147 00:17:00,770 --> 00:17:13,340 Wendling Tagus we should spend three part as to define the export configuration Mihir link types R.S.V.P. 148 00:17:13,350 --> 00:17:19,250 coal's the collection in two or most of it as a link type connection a port that operates in through 149 00:17:19,280 --> 00:17:27,510 the place much is assumed to be point to point link where yes hotplates port through hop is considered 150 00:17:27,720 --> 00:17:30,390 a shared part by default. 151 00:17:31,750 --> 00:17:38,980 As you can see that if I'm talking about the link between two Swiss it's linked by P2P 152 00:17:43,710 --> 00:17:52,770 if I'm directly connected to a PC from a switchboard it's linked to P2P edge and if I can connect to 153 00:17:52,920 --> 00:18:03,270 this PC or the hub that means lead pipe share and let's take a look to this spanning three configuration 154 00:18:03,270 --> 00:18:03,840 now. 155 00:18:04,920 --> 00:18:14,080 Please keep in mind that the default spending three month is PV as the plus for the Ciscos of its an 156 00:18:15,760 --> 00:18:24,790 we can't force to a savage to be our group bridge also as you as we talked in the previous slide we 157 00:18:24,930 --> 00:18:32,380 truly let the rude bridge called topology and let's say the switch to is the wood bridge for the center. 158 00:18:32,550 --> 00:18:34,670 Other than Coklat and it will take off. 159 00:18:34,690 --> 00:18:41,030 I just I'm just assuming Rainer let's say it's 3 2 is the root bridge. 160 00:18:41,400 --> 00:18:51,520 But if I want to force each one to be Rooper H I can use the spelling three Villon one root primary 161 00:18:51,530 --> 00:18:52,160 comment. 162 00:18:53,510 --> 00:19:01,220 If I use this comment so which one takes the action and tells the network that hey guys I'm your new 163 00:19:01,510 --> 00:19:04,080 Roop bridge and Smoochy. 164 00:19:04,220 --> 00:19:05,810 So which two is who. 165 00:19:05,850 --> 00:19:08,030 Goodbye. 166 00:19:08,190 --> 00:19:20,220 I can also lower the priority of the Sichuan to make it look Pritch as you can see the line and I can 167 00:19:20,220 --> 00:19:26,890 also choose a secondary route bridge and the primary route preach Frails. 168 00:19:27,030 --> 00:19:30,710 My second bridge becomes route immediately. 169 00:19:32,000 --> 00:19:39,530 Clarified the route bridge configuration I'm using Scholl's painting tree will and villain number man. 170 00:19:43,530 --> 00:19:50,070 Then I issue this on and I see that this bridge is the route that the commander put. 171 00:19:50,190 --> 00:19:56,370 That means that our route bridge configuration is OK and this bridge this bridge is the route bridge 172 00:19:58,380 --> 00:20:00,700 and let's take a look at the port first configuration 173 00:20:03,650 --> 00:20:09,870 as you know that on the airport we could configure port fast and to configure a pulse port fast before 174 00:20:09,890 --> 00:20:20,220 getting into the interface more and just typing spelling three port fast and BPT you are putting the 175 00:20:20,220 --> 00:20:22,420 interface into Arab disabled state. 176 00:20:22,440 --> 00:20:31,980 If a BPU is received on first Internet 0 7 I'm so I can also set to be were enabled by typing spending 177 00:20:31,980 --> 00:20:34,380 three Lippitt Ugur enable comment 178 00:20:37,220 --> 00:20:45,810 if I want to use Rapide previous D-plus type of SCDP my configuration will be spending three more rapid 179 00:20:45,810 --> 00:20:46,350 PBS. 180 00:20:46,360 --> 00:20:46,620 The 181 00:20:50,250 --> 00:20:51,930 and we the spanning tree. 182 00:20:52,020 --> 00:20:53,720 And let's take a look to the first half. 183 00:20:53,760 --> 00:21:00,660 Redundancy protocols which are designed to protect the default that they use going to subnetwork by 184 00:21:00,750 --> 00:21:06,050 allowing two or more others to provide backup for that address. 185 00:21:06,060 --> 00:21:09,770 We have three protocols that's providing this to us. 186 00:21:09,870 --> 00:21:19,080 They are just happy mirror r.p.m. JVP the European jail BP are all those the scope with the new CCMA 187 00:21:19,270 --> 00:21:21,530 update so we are not it. 188 00:21:21,880 --> 00:21:29,700 These proposals will just take a look to the happy hot standby rather particle physicists will propria 189 00:21:30,000 --> 00:21:31,750 three per the code. 190 00:21:32,310 --> 00:21:41,910 We have a virtual IP and mac addresses and they shit that mean to us there is another load balancing 191 00:21:41,940 --> 00:21:43,490 in this protocol. 192 00:21:44,280 --> 00:21:49,740 And he gave me the final confirmation by using shows them by Colinet for example. 193 00:21:50,800 --> 00:22:02,030 If I want to configure IP to protect my DFA as you can see that I'm setting the set up one is my good 194 00:22:02,110 --> 00:22:10,460 way and I'm setting this in the face of this rather tend up to and setting the turned up three to this 195 00:22:10,470 --> 00:22:17,550 in the face of disruption and I'm setting you a step by IP for these routers and others are sharing 196 00:22:17,550 --> 00:22:28,720 these IP and these are peace tender where they are if they handle these IP and takes the traffic that 197 00:22:28,740 --> 00:22:44,500 are destined to site of this you are definitely Frails then by GET THE goes that the operation rather 198 00:22:44,500 --> 00:22:47,960 with the highest IP address becomes active by default. 199 00:22:48,070 --> 00:22:55,540 But that election can be modified to be it just not be a priority while the highest priority becomes 200 00:22:55,870 --> 00:22:56,730 active. 201 00:22:56,800 --> 00:23:05,440 Please keep in mind that the default priority for HAARP is 100 and two and standby routers exchange 202 00:23:05,440 --> 00:23:08,890 help pickets each 3 seconds 203 00:23:13,020 --> 00:23:17,130 and also it's a separate preemption term. 204 00:23:17,130 --> 00:23:26,910 If my active gateway fails this standby router becomes active and still continue to be active even if 205 00:23:27,120 --> 00:23:30,480 active router comes back. 206 00:23:30,600 --> 00:23:31,950 If I use preemption 207 00:23:34,740 --> 00:23:44,300 and if the standby rather becomes active because of the active rather fails and when that if get they 208 00:23:45,020 --> 00:23:52,470 comes back and if I'm using preemption activated they will handle that process. 209 00:23:52,490 --> 00:24:00,940 Preemption will force us to add new age us Sarpy election process and they will renew the process again 210 00:24:00,980 --> 00:24:03,290 and will be active again. 211 00:24:04,940 --> 00:24:14,960 And we have the stats of the IP and their initial learn lissom Sprigg standby and the active and here 212 00:24:14,980 --> 00:24:23,230 is the configuration of DHS R P for example for other awam. 213 00:24:23,340 --> 00:24:27,300 This is Rodewald. 214 00:24:27,390 --> 00:24:38,240 We have an IP address hoarded up to which is the IP address of the Teague's 00 interface of the rather 215 00:24:38,510 --> 00:24:38,680 WA 216 00:24:44,390 --> 00:24:51,920 and we have a standby IP thirded up WAHM which is being shared by two others. 217 00:24:53,300 --> 00:25:02,910 And you can also and I'm giving the high priority to this rather and making this active forcing this 218 00:25:02,910 --> 00:25:13,410 to be active and I'm configuring preemption and let's take a look to the rather to for the geek 00 interface. 219 00:25:13,480 --> 00:25:21,880 I'm configuring this is going to be Paudie thirty three. 220 00:25:21,940 --> 00:25:31,370 This is the interface of each 00 of rather two and I'm defining the same standby IP address with rather 221 00:25:31,370 --> 00:25:46,440 wan So the gig for the PC is 10 to one which is the standby IP address and these IP address and the 222 00:25:46,440 --> 00:25:53,890 packet sent thing sent to the Ziba others are handled by the activity so that the traffic is flowing 223 00:25:53,930 --> 00:25:54,740 in that way. 224 00:25:55,770 --> 00:26:05,440 Now if rather one Thrale's if there is a problem it rather run rather too informs it and takes the traffic 225 00:26:05,500 --> 00:26:06,460 on itself. 226 00:26:06,610 --> 00:26:16,810 So traffic flows from rather two and we don't have any interruption and all the other one comes back 227 00:26:16,810 --> 00:26:18,560 to work after a while. 228 00:26:21,180 --> 00:26:27,090 Rather one becomes a thief again because Milham we have preemption configure 229 00:26:29,880 --> 00:26:37,710 and 12:5 HRP we are using show Stanback command and we can see the state of the other and if it's active 230 00:26:37,860 --> 00:26:39,310 or standby.