1 00:00:01,130 --> 00:00:04,750 In the section we're going to talk about scaling them that works. 2 00:00:05,790 --> 00:00:10,190 Let's go ahead with the network design implementation first. 3 00:00:10,340 --> 00:00:15,670 And the question is why we need scaling networks. 4 00:00:15,800 --> 00:00:23,150 Guys we need to scale our networks because enterprise networks grow and expand. 5 00:00:23,150 --> 00:00:27,770 Today we have almost zero tolerance for interruptions. 6 00:00:27,770 --> 00:00:29,310 We need more bandwidth. 7 00:00:29,360 --> 00:00:36,640 Day by day and we need an effective administration approach for our network. 8 00:00:37,190 --> 00:00:46,610 So one of the scaling options is the hierarchical design hierarchical this term provides us is a management 9 00:00:46,670 --> 00:00:52,450 and troubleshooting and also if the usage of the resources. 10 00:00:52,490 --> 00:01:01,550 We have three layers in hierarchical this time and they are accessed this through mission and core access 11 00:01:01,550 --> 00:01:10,250 layer is the end the wireless networks which are the PCs IP phones printers and etc.. 12 00:01:10,490 --> 00:01:18,710 This Obaid-Chinoy or manage the individual branch office one connections and the colyer provides the 13 00:01:18,710 --> 00:01:25,790 high speed for services for moving packets between distribution layer Dubois's in different regions 14 00:01:25,790 --> 00:01:28,500 of the network. 15 00:01:28,940 --> 00:01:36,470 And we should also use the redundant devices and pads which provide highway lability and DeWyze and 16 00:01:36,740 --> 00:01:40,970 pet redundancy as you know this is an expensive solution. 17 00:01:41,090 --> 00:01:49,980 But this is necessary for large enterprise networks as you know Alice go ahead with the air to channel 18 00:01:50,520 --> 00:01:58,250 8 or channel is a poor playing aggregation technology or Porcello architecture used primarily on Cisco's 19 00:01:58,250 --> 00:01:59,550 sweats. 20 00:01:59,580 --> 00:02:06,510 It allows grouping of several physical internet links to create one logical internet link for the purpose 21 00:02:06,510 --> 00:02:10,480 of providing fault tolerance and high speed links. 22 00:02:10,500 --> 00:02:17,820 But when surveyed Shradha ran the service as you can see in our figure we have to assume it some day 23 00:02:17,830 --> 00:02:28,500 or so which once we do in the first full year they are connected to each other by using four separate 24 00:02:28,640 --> 00:02:38,660 one gigabit per second Blancs but were millions and entered Chernow the ether combines them together 25 00:02:39,080 --> 00:02:43,700 and creates the air wall for gigabit per second. 26 00:02:44,020 --> 00:02:47,600 Channel link for us. 27 00:02:47,830 --> 00:02:52,380 Let's go how we can expand our Locklear in that connection. 28 00:02:52,570 --> 00:03:00,610 Sometimes guys we may need to expand to our local area network connections locally in a connection can 29 00:03:00,610 --> 00:03:09,370 be expanded with using wireless access point devices for example as you can see in the figure laptops 30 00:03:09,940 --> 00:03:20,070 these guys use the Lokeren orc's sources remotely by the help of the access point. 31 00:03:20,200 --> 00:03:24,290 And let's go ahead with choosing the right switch. 32 00:03:25,390 --> 00:03:29,620 Why we are choosing the right switch that fits our needs. 33 00:03:29,620 --> 00:03:32,750 We have three things to take care about. 34 00:03:32,750 --> 00:03:41,590 Guys For example if we need more bandwidth we may need to use a modular switch or if we don't have enough 35 00:03:41,590 --> 00:03:50,210 space in our cabinet we may need to use fixed to its and other things that we would need to care about 36 00:03:50,210 --> 00:03:56,320 while we are choosing as to which is if we are going to use P.O.D. or not. 37 00:03:56,390 --> 00:04:05,060 For example if our end devices also support P.O.D. And if we dont want to use an extra power cable we 38 00:04:05,060 --> 00:04:09,220 should choose a payware power or internet switch. 39 00:04:11,190 --> 00:04:19,110 If it plucked two or more switch to each other using takeable switch would be a great choice and which 40 00:04:19,160 --> 00:04:26,760 act as a single switch and pro-white is a management for us. 41 00:04:26,850 --> 00:04:35,430 It is also important to make a choice between L.A. 2 and layer three sweats if we're going to use our 42 00:04:35,430 --> 00:04:37,350 switch for running purposes. 43 00:04:37,370 --> 00:04:46,730 So we need to use multi-layers suites which can make both players to switching and layer 3 rodding the 44 00:04:46,730 --> 00:04:53,540 last thing we need to care about while we are choosing so rich is at the port number if we have lots 45 00:04:53,540 --> 00:05:02,470 of endwise is connected to our switch we need to choose as to which which has higher part numbers. 46 00:05:02,680 --> 00:05:06,940 So let's go ahead with choosing the right rather. 47 00:05:07,130 --> 00:05:15,940 There are various types of rodders also and we have a few things to care again while choosing rather. 48 00:05:15,980 --> 00:05:22,100 For example if you are choosing a router for branch offices or small medium sized business you need 49 00:05:22,100 --> 00:05:30,640 to choose a branch rather like Cisco twenty eight 11 or Cisco thirty eight forty five. 50 00:05:30,860 --> 00:05:37,520 For example if you're choosing a router for a bigger office or for example if you're choosing your rather 51 00:05:37,520 --> 00:05:44,960 for your datacenter which will be a collection point for other locations you need to choose an edge 52 00:05:44,960 --> 00:05:46,190 router this time. 53 00:05:46,280 --> 00:05:49,520 Like Cisco 2 0 0 54 00:05:52,200 --> 00:05:59,190 and let's go ahead with the ISB Carruthers For example let's said if you're working in an ISP and if 55 00:05:59,190 --> 00:06:05,420 you need to rather rich poor it's excellent writing skills and great bandwidth. 56 00:06:05,490 --> 00:06:12,870 Up to nine hundred and twenty two terabit per second you need to choose a core larger corridor like 57 00:06:13,050 --> 00:06:24,260 Cisco C-rist X series and let's go ahead with the Vitti P Richy P We'll run through ranking Pulo code 58 00:06:24,300 --> 00:06:32,280 is a Cisco proprietary protocol that propagates the definition of violence on the local or in at work 59 00:06:32,280 --> 00:06:33,720 in the same way. 60 00:06:33,720 --> 00:06:43,890 Tippett domain and provides is a management because you do not manually add or delay the release in 61 00:06:44,130 --> 00:06:51,580 VTB portico we have a VTB server switch this terabits and synchronize the relay information. 62 00:06:51,650 --> 00:06:55,120 You can propagate the normal range Rylance with which to pay. 63 00:06:55,130 --> 00:07:02,260 But if you want to propagate the center branch will as usual use VTB version 3. 64 00:07:02,270 --> 00:07:07,930 These external tranch should be distributed by using the ETP. 65 00:07:07,990 --> 00:07:14,000 Werman three guys let's go ahead with TV Tippee mode. 66 00:07:14,030 --> 00:07:15,340 We have three months. 67 00:07:15,350 --> 00:07:25,370 They are server client and transparent so in the server modes create modify and delayed Whelan's and 68 00:07:25,520 --> 00:07:34,070 specify other configuration parameters such as were to be version and we T-P pruning Srishti in the 69 00:07:34,070 --> 00:07:43,700 transparent mode just forwards VDB advertisements and does not participate in BGP Whelan's that are 70 00:07:43,700 --> 00:07:53,300 created renamed or delays on transparence which are local to that switch on they search in the client's 71 00:07:53,300 --> 00:08:02,460 mode can not create modify or dilates will last because we're going to make an excellent packet Raceland. 72 00:08:02,590 --> 00:08:10,670 But the way the modes and you'll see the difference between server client and the transparent arm our 73 00:08:10,670 --> 00:08:19,740 lab exercise and you will understand what is going on between these guys better square with the with 74 00:08:19,740 --> 00:08:20,760 the perversions. 75 00:08:20,760 --> 00:08:27,680 We have three versions of the VTB and they are we to be version one where the reversion to and the meta 76 00:08:27,720 --> 00:08:30,420 perversion three with a perversion. 77 00:08:30,420 --> 00:08:37,180 One is the default GTP mode with the P version 2 is similar to it to be version 1. 78 00:08:37,330 --> 00:08:45,360 Additionally supports the talking shrink and VTB version 3 is the version that provides more security 79 00:08:45,360 --> 00:08:55,510 enhancements with the capability of supporting extended we land Rantz and let's growth that the configuration 80 00:08:55,510 --> 00:09:03,200 region number term configuration revision number is a 32 bit number that indicates the level of revision 81 00:09:03,200 --> 00:09:09,860 for having to pay packet that used in order to determine whether the received information is more recent 82 00:09:09,860 --> 00:09:11,860 than the current version. 83 00:09:11,870 --> 00:09:19,520 This number is incremented by one for each reland change and it's to each just use an update with a 84 00:09:19,520 --> 00:09:21,080 higher revision number. 85 00:09:21,080 --> 00:09:23,720 This update is always used. 86 00:09:23,720 --> 00:09:26,380 For example let's say that we have a reason. 87 00:09:26,400 --> 00:09:33,590 So in here let's say that we just switch one and let's say that this is switched to this case switch 88 00:09:33,680 --> 00:09:43,800 three and let's say that when we quit everyone in here for example that's great we run 20 in here because 89 00:09:43,800 --> 00:09:45,970 of this is a very deep answer. 90 00:09:47,070 --> 00:09:58,320 We come to any real merit will be created on this which And on this which three as well as you can see 91 00:09:58,350 --> 00:09:58,980 here. 92 00:09:59,260 --> 00:10:03,120 And as soon as I add the name we learned to this guy. 93 00:10:03,300 --> 00:10:15,560 The revision number will change from 6 to 7 and then on everywhere as you can see let's go ahead with 94 00:10:15,880 --> 00:10:18,290 the message types. 95 00:10:18,350 --> 00:10:27,780 We are three maybe DP message types summary advertisement advertisement request and the subs that subs 96 00:10:27,780 --> 00:10:36,200 an advertisement some advertisement is sent by VTB So we're in five minute intervals to its edges and 97 00:10:36,200 --> 00:10:44,870 suites and includes the VTB domain name and the configuration no region number advertizement request 98 00:10:44,900 --> 00:10:45,870 is send. 99 00:10:45,920 --> 00:10:53,720 If some area advertisement includes a higher configuration number than the current value and subsidy 100 00:10:53,780 --> 00:10:58,990 advertisement holds the we learn information. 101 00:10:59,060 --> 00:11:07,060 Let's go ahead with how we can configure the BTP to configure the ability to be vigilant Reinking poor 102 00:11:07,050 --> 00:11:09,370 or call or switch. 103 00:11:09,710 --> 00:11:20,720 First we need to choose the related Motz we did mod's Cambiasso were or Collines or transparent as you 104 00:11:20,720 --> 00:11:30,350 know and everything Serwer is the default month R.K. to convey your the Tippit murder and server we 105 00:11:30,350 --> 00:11:41,970 are typing with Topy mode and ETP much server client or the transparent then we are defining the wind 106 00:11:41,980 --> 00:11:52,430 speeds made by tapping with repeat domain and the VTB domain name because all this with Schuth have 107 00:11:52,430 --> 00:11:56,270 the same domain name to share in the VTB. 108 00:11:57,880 --> 00:12:06,920 Then we can also define a password which should match on the Swades to share with we pay advertisements 109 00:12:07,120 --> 00:12:07,880 again. 110 00:12:08,780 --> 00:12:16,520 And two were fired the way the configuration we are using the show ATP's that is command and we can 111 00:12:16,520 --> 00:12:23,870 check the ETP version configuration revision number and number of existing Willam maximum will and support 112 00:12:23,870 --> 00:12:31,050 that locally BTP operating more domain name pre-warning mode and something like that.