1 00:00:04,180 --> 00:00:08,260 Want back classes of addresses. 2 00:00:08,300 --> 00:00:12,610 Wait a minute lies when you talk about that Marla 3 00:00:15,410 --> 00:00:23,920 in a previous lecture we have to learn the network address range that you say was from 0 to 127 but 4 00:00:24,130 --> 00:00:26,390 we need to know the actual range. 5 00:00:26,410 --> 00:00:28,380 We can use word on that. 6 00:00:28,390 --> 00:00:29,000 Are we looking. 7 00:00:29,030 --> 00:00:31,890 Because you need to classify and address. 8 00:00:32,030 --> 00:00:40,390 We don't do that and I think what we must do it and I it for all because a range can be zero to 127. 9 00:00:40,390 --> 00:00:41,630 Why is that. 10 00:00:41,950 --> 00:00:43,940 Because zero is reserved. 11 00:00:44,430 --> 00:00:45,160 OK. 12 00:00:45,280 --> 00:00:52,330 Four rounds for deep R-AZ 127 is reserved for a Y for loopback addressing. 13 00:00:52,930 --> 00:01:02,540 For testing the DCB IPs that the all 1:43 range so you cannot include that in the range and what you're 14 00:01:02,540 --> 00:01:04,910 looking at these numbers that they said. 15 00:01:04,950 --> 00:01:11,390 So I took out the zero and I took out the 127 I put one through 126 would it to look at the first I 16 00:01:11,510 --> 00:01:16,610 said we got four on the first second third and fourth. 17 00:01:16,760 --> 00:01:21,420 So the first of it is you need to classify an address when you look at the first arc is said oh that's 18 00:01:21,490 --> 00:01:27,330 innate or that the be all that to see all of the I don't know because hey that's experimental or you 19 00:01:27,340 --> 00:01:30,380 want to look guys in black holes may come pick me up. 20 00:01:30,500 --> 00:01:31,080 OK. 21 00:01:31,190 --> 00:01:41,420 So for a class A address you want to 1:26 do you see an address that has any other values within this 22 00:01:41,420 --> 00:01:42,580 range right here. 23 00:01:42,650 --> 00:01:43,870 It is a class address. 24 00:01:43,880 --> 00:01:45,330 Why do we need to know all this. 25 00:01:45,350 --> 00:01:46,760 Why why why. 26 00:01:46,880 --> 00:01:52,560 Because the Class A address is a default mask of two by 5. 27 00:01:52,750 --> 00:01:58,030 0.00 offsider eight classes in domain writing SEE ID are. 28 00:01:58,330 --> 00:02:05,060 It has a slash Hades which means it's the first octet then the rest can be whatever that means you have 29 00:02:05,430 --> 00:02:06,520 Malins. 30 00:02:06,520 --> 00:02:12,050 I'm going to tell the exact number we don't know it's 60 Minutes and that doesn't turn 60 minutes to 31 00:02:12,560 --> 00:02:14,050 even though. 32 00:02:14,420 --> 00:02:20,870 OK you need to know that a million of addresses that you are using a class day. 33 00:02:21,100 --> 00:02:22,980 And why am i stressing out about this. 34 00:02:23,000 --> 00:02:32,070 Because when I was in the classroom post something that's for companies will come to me and tell me 35 00:02:32,460 --> 00:02:40,770 they like I have a situation where my client ran out of private IP addresses where classi I. 36 00:02:42,090 --> 00:02:44,640 How do you want out of class the address. 37 00:02:44,970 --> 00:02:52,010 I mean I can see you wearing our classy dresses but did you not at the thought to say hey. 38 00:02:52,530 --> 00:02:53,700 Asking the big question. 39 00:02:53,730 --> 00:02:55,920 How big do you think this film is going to grow. 40 00:02:55,950 --> 00:02:59,640 How many actual networks are you going to have out there. 41 00:02:59,640 --> 00:03:01,130 Why use unclassy. 42 00:03:01,230 --> 00:03:05,310 The college that I work for many many many many years. 43 00:03:05,320 --> 00:03:06,210 All right. 44 00:03:06,280 --> 00:03:13,600 For for the students I they only use the class B a default class we are great because they didn't realize 45 00:03:13,610 --> 00:03:15,810 or segments or anything like that and believe them all. 46 00:03:16,190 --> 00:03:17,510 Even those in the school. 47 00:03:17,750 --> 00:03:18,640 OK. 48 00:03:19,070 --> 00:03:27,480 And then the one for administration where there are only like 130 people that use the Class-A OK. 49 00:03:27,600 --> 00:03:29,510 So if you had that available why would you. 50 00:03:29,510 --> 00:03:30,960 You need to know this. 51 00:03:31,040 --> 00:03:34,320 So you know OK what class of address am I going to need. 52 00:03:34,320 --> 00:03:38,670 Now obviously we're looking at there's really going to both public and private ranges and we'll talk 53 00:03:38,670 --> 00:03:39,430 about both. 54 00:03:39,630 --> 00:03:44,130 OK public ranges are around on the Internet is what you get from your ISP but you get all your eyes. 55 00:03:44,170 --> 00:03:51,990 Hey listen I have millions of people that I've got I supply a public IP address for give me millions 56 00:03:51,990 --> 00:03:54,890 of ID and they'll give you something for the class. 57 00:03:55,250 --> 00:04:00,030 Ok if you don't do that you are going to be going back over and on on internet. 58 00:04:00,300 --> 00:04:02,090 Oh man we need more of these. 59 00:04:02,100 --> 00:04:03,350 No you're not going to do that. 60 00:04:03,590 --> 00:04:03,990 OK. 61 00:04:04,120 --> 00:04:05,670 Here's an example. 62 00:04:05,670 --> 00:04:06,820 One two three four. 63 00:04:06,960 --> 00:04:10,270 Fifty twenty two one two one or 126. 64 00:04:10,440 --> 00:04:19,100 And just so you know that 126 supervisor Vitaphone for the last available IP address. 65 00:04:19,170 --> 00:04:20,150 I did that on purpose. 66 00:04:20,300 --> 00:04:24,410 It's the last available address on that particular range. 67 00:04:24,440 --> 00:04:25,400 OK. 68 00:04:25,710 --> 00:04:31,710 Need to know that you need to know that B there is the range that they told you you know in the previous 69 00:04:31,710 --> 00:04:33,070 lecture blah blah blah. 70 00:04:33,270 --> 00:04:33,880 All right. 71 00:04:34,050 --> 00:04:35,480 That's what it is in binary. 72 00:04:35,590 --> 00:04:39,850 When they're cool it is 128 to 191 by class-B address. 73 00:04:39,960 --> 00:04:45,360 So anything when they want twenty one when anyone class-B Why do you need to know that because you're 74 00:04:45,360 --> 00:04:52,060 allowed 65000 plus addresses 65000 plus addresses. 75 00:04:52,230 --> 00:04:56,040 So you know if you're working within a class B that's where you're going to get. 76 00:04:56,100 --> 00:04:57,570 So no the network you're in. 77 00:04:57,570 --> 00:05:03,000 So you know what class of address you need to have and again you're looking at the first octave. 78 00:05:03,150 --> 00:05:06,670 And your examples on you know first off 130. 79 00:05:06,730 --> 00:05:12,960 Here's another one for Dr. 168 where I upload all of this up or we want to say one every two backwards 80 00:05:13,880 --> 00:05:20,530 and then one out you want 2.5 to Vita before the last available one before we reached the class scene. 81 00:05:21,420 --> 00:05:22,250 Right. 82 00:05:22,490 --> 00:05:24,230 Previous lecture they gave us. 83 00:05:24,260 --> 00:05:24,880 OK. 84 00:05:24,920 --> 00:05:28,740 I mean I type all while one to two to three. 85 00:05:29,000 --> 00:05:30,230 Yes that's correct. 86 00:05:30,230 --> 00:05:33,370 When I try to do three anything within that range. 87 00:05:33,500 --> 00:05:37,050 All right is a class C address. 88 00:05:37,070 --> 00:05:40,240 Let me stress this now to which I haven't. 89 00:05:42,840 --> 00:05:44,190 Some math. 90 00:05:44,220 --> 00:05:48,060 I said is the key to answering all your questions. 91 00:05:48,210 --> 00:06:00,200 OK on I Bulos but the math does not make a class of address I'm going to say that let's say you have 92 00:06:00,200 --> 00:06:05,130 a $10 one the one that one the one are you using a class C. 93 00:06:05,300 --> 00:06:09,860 People call it sort of amass 2.5 to four if I can provide that zero. 94 00:06:09,910 --> 00:06:12,470 They said oh it's a class C now what. 95 00:06:12,500 --> 00:06:16,160 It just magically turned into the class C No. 96 00:06:16,290 --> 00:06:23,520 If the first octet is within the range 1 through 126 I don't care what the math you have in the back. 97 00:06:23,750 --> 00:06:24,480 OK. 98 00:06:24,620 --> 00:06:26,310 That is our class 8. 99 00:06:26,330 --> 00:06:28,880 It is a sudden get it class 8. 100 00:06:28,970 --> 00:06:30,530 But as a class 8 nonetheless. 101 00:06:30,740 --> 00:06:38,600 So whoever is spreading this rumor out there that your supplement math dictates the class of address 102 00:06:38,990 --> 00:06:41,000 they are insane. 103 00:06:41,000 --> 00:06:41,560 OK. 104 00:06:41,600 --> 00:06:43,550 And then to go back to school. 105 00:06:43,550 --> 00:06:43,900 All right. 106 00:06:43,910 --> 00:06:44,780 No. 107 00:06:45,160 --> 00:06:45,970 All right. 108 00:06:45,980 --> 00:06:47,880 Now do they have deep puppet. 109 00:06:47,960 --> 00:06:48,920 Of course. 110 00:06:48,940 --> 00:06:49,520 OK. 111 00:06:49,610 --> 00:06:57,740 But you have a class A with or 2 5 5 2 5 5 0 0 that doesn't turn it into a B. 112 00:06:58,040 --> 00:06:58,650 OK. 113 00:06:58,910 --> 00:07:02,100 And I give you examples and I'll give you the last word. 114 00:07:02,150 --> 00:07:06,700 Two to three not to provide advice for which is actually the last one. 115 00:07:06,850 --> 00:07:12,430 I last usable usable word usable I'd love to put that word into us. 116 00:07:13,430 --> 00:07:15,930 The range is for multicast to for to deny. 117 00:07:15,930 --> 00:07:18,340 Here they are the ones that you need to know. 118 00:07:20,520 --> 00:07:21,340 OK. 119 00:07:21,750 --> 00:07:22,150 Yes. 120 00:07:22,170 --> 00:07:29,760 Multi-course is an IP address that we can use so we can go ahead and everybody join and watch videos 121 00:07:29,760 --> 00:07:34,690 all together you know in a web ex version and we can have a conference call all in the same multi-game. 122 00:07:34,710 --> 00:07:36,430 Yes that's true. 123 00:07:36,480 --> 00:07:43,900 So true but more important than that is what you're here for which is routing. 124 00:07:44,260 --> 00:07:54,520 All right what you're doing with Birgeneau or N.G. I and you obviously would be in or I 3:6 sex f e 125 00:07:54,580 --> 00:08:04,130 0 0 or F of ch f EF 0 2 colon colon nine. 126 00:08:04,430 --> 00:08:15,320 Sorry if I've zero power of zero zero to call going 9 5 will be IP Benji but in IP for Rip version 2 127 00:08:15,350 --> 00:08:16,850 will be 2 to 4 years or 9. 128 00:08:17,000 --> 00:08:20,880 That's the address that he uses to send updates to its neighbor. 129 00:08:20,960 --> 00:08:21,620 OK. 130 00:08:21,860 --> 00:08:26,260 It uses 10 was to 5 x y or SPF. 131 00:08:26,390 --> 00:08:30,800 If it's a multitasked environment multi broadcast I should say. 132 00:08:30,940 --> 00:08:31,630 All right. 133 00:08:31,690 --> 00:08:38,590 Well let's say I was waiting for I was going to test which does one broadcast domain right there. 134 00:08:38,980 --> 00:08:45,200 Well Gainsville there are all like a frame relay why you're going to have designe a router or and a 135 00:08:45,200 --> 00:08:46,370 bag of buzzing in order. 136 00:08:46,370 --> 00:08:51,620 And that's why these two are addresses belong to that one says the two dozen they're rodder. 137 00:08:51,740 --> 00:08:53,750 No one thing that everybody else. 138 00:08:53,750 --> 00:08:58,280 These are the address that you do know these are the address of the you need to know more important 139 00:08:58,280 --> 00:08:59,350 than anything else. 140 00:08:59,420 --> 00:09:00,000 OK. 141 00:09:00,110 --> 00:09:04,350 Well you know Margaret Some of them will ask you that webinars one or question. 142 00:09:04,480 --> 00:09:06,410 But anyway this is what you need to know. 143 00:09:06,420 --> 00:09:10,380 This is what multicast are used and you need to understand. 144 00:09:10,460 --> 00:09:11,060 OK. 145 00:09:11,240 --> 00:09:17,420 GLASSIE again is a black ops rating now using national networks and your your competitors buma you try 146 00:09:17,420 --> 00:09:20,010 to put it in there and on trial. 147 00:09:20,420 --> 00:09:25,380 It's going to Trumans you up and do it. 148 00:09:25,710 --> 00:09:30,240 So even though any book out there it's all there and I guess that their frustration is that it's used 149 00:09:30,240 --> 00:09:34,480 for scientific purposes what in the world is I mean. 150 00:09:34,720 --> 00:09:38,550 OK I understand there's guys out there and I'm saying white coat whatever. 151 00:09:38,550 --> 00:09:42,420 Doing all these different things are for God to be nice and use a little bit more cool on it. 152 00:09:42,420 --> 00:09:42,920 All right. 153 00:09:43,060 --> 00:09:45,860 But I don't use it Dorina don't use it you don't use it. 154 00:09:45,990 --> 00:09:46,550 OK. 155 00:09:46,770 --> 00:09:58,640 So these are your classes A B C D any non-New all their ranges as far as to classify them in the first. 156 00:09:58,960 --> 00:09:59,620 OK. 157 00:09:59,860 --> 00:10:08,480 But now in the next section or in the next lectures you think you're going to see more private viewing 158 00:10:09,010 --> 00:10:09,520 either.