WEBVTT 0:00:02.000000 --> 0:00:06.120000 Well, welcome. Welcome to this course on InterVLAN routing. 0:00:06.120000 --> 0:00:09.740000 And throughout this short course, I'm going to talk to you about a variety 0:00:09.740000 --> 0:00:12.620000 of things related to InterVLAN routing so that by the time you're done 0:00:12.620000 --> 0:00:17.420000 watching the series of videos, you'll be well prepared to tackle any questions 0:00:17.420000 --> 0:00:22.760000 you might get regarding this subject on either the CCNA or the CCNP exams. 0:00:22.760000 --> 0:00:25.540000 So, in the event that you haven't seen any videos from me before, let 0:00:25.540000 --> 0:00:27.400000 me just briefly introduce myself. 0:00:27.400000 --> 0:00:29.020000 My name is Keith Bogart. 0:00:29.020000 --> 0:00:33.640000 I am one of the course developers and instructors here at INE specializing 0:00:33.640000 --> 0:00:38.200000 in CCNA and CCNP routing and switching technologies. 0:00:38.200000 --> 0:00:41.540000 Now, as you go along, hopefully this course will answer all the questions 0:00:41.540000 --> 0:00:44.940000 that you have. But in the event that it doesn't and you're still left 0:00:44.940000 --> 0:00:48.540000 with some questions, I provide here my contact information where you can 0:00:48.540000 --> 0:00:51.420000 reach out to me for any questions that you might have. 0:00:51.420000 --> 0:00:55.020000 I'd also recommend that before reaching out to me, Unicast, either via 0:00:55.020000 --> 0:01:00.020000 email, Twitter or LinkedIn, ideally that you would go to INE's online 0:01:00.020000 --> 0:01:04.300000 community at the CCNA level and post your questions there. 0:01:04.300000 --> 0:01:07.520000 That way other people can benefit from your questions as well as benefit 0:01:07.520000 --> 0:01:10.620000 from seeing the replies to those questions. 0:01:10.620000 --> 0:01:12.700000 So what are you going to see in this course? 0:01:12.700000 --> 0:01:14.640000 What topics am I going to cover? 0:01:14.640000 --> 0:01:15.920000 So let's talk about that. 0:01:15.920000 --> 0:01:18.540000 So let me just go through the course outline real quickly or the course 0:01:18.540000 --> 0:01:21.880000 overview and then we can get right into the meat of the course. 0:01:21.880000 --> 0:01:26.820000 So the first video I'm going to talk about is why do we need routing within 0:01:26.820000 --> 0:01:31.020000 VLANs? Why is it that typically when you create multiple VLANs, routing 0:01:31.020000 --> 0:01:34.380000 between those VLANs is inherent in the design? 0:01:34.380000 --> 0:01:35.800000 Why do we need that in the first place? 0:01:35.800000 --> 0:01:38.440000 Why can't we just create VLANs and be done with it? 0:01:38.440000 --> 0:01:41.820000 So I'll talk a little bit about why there is that necessity, why we need 0:01:41.820000 --> 0:01:43.420000 to learn these approaches. 0:01:43.420000 --> 0:01:47.780000 Then we'll go into two different approaches of accomplishing inter-VLAN 0:01:47.780000 --> 0:01:52.340000 routing. The first approach is a historically a more older approach which 0:01:52.340000 --> 0:01:54.520000 is called router on a stick. 0:01:54.520000 --> 0:01:58.640000 So I'll discuss with you in a whiteboard what is router on a stick? 0:01:58.640000 --> 0:02:00.080000 What's the theory behind that? 0:02:00.080000 --> 0:02:01.780000 How does it work in theory? 0:02:01.780000 --> 0:02:04.800000 How do the frames flow back and forth between the switch and the router 0:02:04.800000 --> 0:02:08.800000 and how does this all work to give us inter-VLAN routing? 0:02:08.800000 --> 0:02:11.800000 Then the video following that will be the actual configuration of router 0:02:11.800000 --> 0:02:16.020000 on a stick where we will get into a router and a switch and I will show 0:02:16.020000 --> 0:02:18.740000 you the configuration commands to make this happen. 0:02:18.740000 --> 0:02:21.380000 We'll also talk about some of the caveats and gotchas that you need to 0:02:21.380000 --> 0:02:26.500000 be aware of to make this a fully functional solution for inter-VLAN routing. 0:02:26.500000 --> 0:02:30.380000 Then we'll go into the more modern way of routing on inter-VLAN routing. 0:02:30.380000 --> 0:02:33.960000 Most switches these days, not all of them, but most switches these days 0:02:33.960000 --> 0:02:37.760000 are what we call multi-layer switches which means they have the capability 0:02:37.760000 --> 0:02:40.440000 of routing as well as switching. 0:02:40.440000 --> 0:02:43.580000 So when you have a multi-layer switch, at least on a Cisco switch, you 0:02:43.580000 --> 0:02:46.820000 have the capability of configuring something called a switched virtual 0:02:46.820000 --> 0:02:51.680000 interface. Now before we talk about how do switch virtual interfaces work 0:02:51.680000 --> 0:02:55.320000 for inter-VLAN routing, a lot of people at the CCA level get a little 0:02:55.320000 --> 0:02:59.080000 bit confused about the differences between a switched virtual interface 0:02:59.080000 --> 0:03:03.880000 and a VLAN because they are very related to each other but they are distinctly 0:03:03.880000 --> 0:03:05.580000 different as well. 0:03:05.580000 --> 0:03:10.680000 So in one video I'll talk about the theory of a switched virtual interface, 0:03:10.680000 --> 0:03:14.400000 what makes it different than the VLAN and how is the switched virtual 0:03:14.400000 --> 0:03:19.540000 interface used for both the management plane as well as for the data plane 0:03:19.540000 --> 0:03:21.280000 when it comes to routing. 0:03:21.280000 --> 0:03:24.260000 Then we'll finish off this series with a video on how to actually configure 0:03:24.260000 --> 0:03:28.700000 and use switched virtual interfaces for inter-VLAN routing. 0:03:28.700000 --> 0:03:30.260000 I'll show you how to configure it. 0:03:30.260000 --> 0:03:34.120000 I'll demonstrate those gotchas and caveats I talked about and what could 0:03:34.120000 --> 0:03:37.600000 possibly prevent them from doing inter -VLAN routing and that's how we'll 0:03:37.600000 --> 0:03:39.380000 finish up this series. 0:03:39.380000 --> 0:03:44.420000 So let's go ahead and dive in with the next video on why do we need routing 0:03:44.420000 --> 0:03:47.120000 in the first place when we're talking about VLANs.