WEBVTT 1 00:00.000 --> 00:04.160 All right, let's look at this topology and we see we've got three different 2 00:04.160 --> 00:07.000 questions identifying these three different parts of the network 3 00:07.000 --> 00:09.600 and we want to make sure that we can answer these questions based on what we've 4 00:09.600 --> 00:10.000 learned. 5 00:10.000 --> 00:14.690 So first and foremost, a new site's being activated here over on the left, but 6 00:14.690 --> 00:17.000 DHCP services aren't available. 7 00:17.000 --> 00:20.000 What can be done to enable ZTP for this node? 8 00:20.000 --> 00:25.520 Well, the idea here is that normally we'd rely on DHCP because this WAN Edge 9 00:25.520 --> 00:29.000 device can go out to the ZTP Cloud 10 00:29.000 --> 00:33.220 and help with the onboarding process. It's that zero touch provisioning. It WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 10 00:29.000 --> 00:33.220 and help with the onboarding process. It's that zero touch provisioning. It 11 00:33.220 --> 00:38.000 makes it so I don't have to have technical expertise on site when things aren't 12 00:38.000 --> 00:39.000 going quite right. 13 00:39.000 --> 00:43.640 But when we don't have DHCP, we're going to have to provide the IP address and 14 00:43.640 --> 00:46.000 the gateway and the DNS information. 15 00:46.000 --> 00:50.000 And again, we might not have technical expertise on site. 16 00:50.000 --> 00:56.880 So fortunately, I can configure these into a bootstrap file and then I can send 17 00:56.880 --> 01:01.990 that via USB over to that site and hopefully just have somebody insert the USB WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 17 00:56.880 --> 01:01.990 that via USB over to that site and hopefully just have somebody insert the USB 18 01:01.990 --> 01:03.000 into the device. 19 01:03.000 --> 01:07.140 And then I can bootstrap and get it online at that point and we'll connect to 20 01:07.140 --> 01:11.000 the ZTP Cloud and get onboarded to the rest of the network. 21 01:11.000 --> 01:16.350 Next, number two here, given the noted VQE values, which path will be taken 22 01:16.350 --> 01:18.000 toward the cloud service? 23 01:18.000 --> 01:21.230 So it doesn't really matter which direction we're talking about here. Let's 24 01:21.230 --> 01:23.000 just assume we're coming from the right. 25 01:23.000 --> 01:27.330 We are looking at going this way through the internet and this way through the 26 01:27.330 --> 01:32.000 internet and we have these two different values through the service providers. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 26 01:27.330 --> 01:32.000 internet and we have these two different values through the service providers. 27 01:32.000 --> 01:37.000 So the big question is do we remember is higher better or is lower better? 28 01:37.000 --> 01:41.340 And with VQE, it's all about being higher, which means that we're going to go 29 01:41.340 --> 01:47.000 through this circuit path and use internet service provider number two. 30 01:47.000 --> 01:53.000 So this cloud on ramp for SAS, this is the conversation we're having here. 31 01:53.000 --> 01:56.870 It allows us to bring traffic in and even though we've got two internet 32 01:56.870 --> 02:01.000 circuits and we could just view internet circuits as all being the same. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 32 01:56.870 --> 02:01.000 circuits and we could just view internet circuits as all being the same. 33 02:01.000 --> 02:05.160 In the end, they're not the same and we can hopefully give our users better 34 02:05.160 --> 02:09.180 experiences by choosing which internet service provider is better at that 35 02:09.180 --> 02:10.000 moment in time. 36 02:10.000 --> 02:14.150 Then number three, we've got these two different packets that have arrived. We 37 02:14.150 --> 02:18.430 see they have the same source indestination IP and Mac, but different source 38 02:18.430 --> 02:20.000 indestination ports. 39 02:20.000 --> 02:25.000 So will they be evaluated as being a part of the same application? 40 02:25.000 --> 02:30.830 Well, our evaluation is going to come back to that six-tupel, which does WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 40 02:25.000 --> 02:30.830 Well, our evaluation is going to come back to that six-tupel, which does 41 02:30.830 --> 02:35.000 include source indestination IP and does include source indestination ports. 42 02:35.000 --> 02:39.410 We don't actually care about the Mac address. We're also by the way going to 43 02:39.410 --> 02:42.000 look at DSCP and protocol number as well. 44 02:42.000 --> 02:45.000 So keep that in mind. We didn't list all of them out here. 45 02:45.000 --> 02:49.790 So these are our six source indestination IP ports. These two, if the ports are 46 02:49.790 --> 02:54.000 different, they will not be evaluated as being part of the same application. 47 02:54.000 --> 02:58.330 So when I'm identifying applications, I might want certain applications to go 48 02:58.330 --> 03:02.700 this way. Some applications to go that way. That's thanks to application aware WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 48 02:58.330 --> 03:02.700 this way. Some applications to go that way. That's thanks to application aware 49 03:02.700 --> 03:06.380 routing that we can deploy and take advantage of the load balancing 50 03:06.380 --> 03:09.000 capabilities of our SD-WAN edge devices. 51 03:09.000 --> 03:14.650 So that is the end of this conversation here on SD-WAN. SD-WAN is a really 52 03:14.650 --> 03:20.330 innovative set of technology that's been around at this point for a little 53 03:20.330 --> 03:24.780 while, and a lot of organizations have at least taken steps towards deploying 54 03:24.780 --> 03:25.000 it. 55 03:25.000 --> 03:29.330 So it is a technology worth learning, but for the sake of this course, the 56 03:29.330 --> 03:33.820 scope of the course, the scope of the exam covering these basic concepts at a WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000 56 03:29.330 --> 03:33.820 scope of the course, the scope of the exam covering these basic concepts at a 57 03:33.820 --> 03:38.000 high level is really what we'd expect to see based on the blueprint. 58 03:38.000 --> 03:43.140 So there is a lot more information here on CBT Nuggets website about SD-WAN. We 59 03:43.140 --> 03:48.000 have a dedicated SD-WAN course for Cisco's exam for that particular topic. 60 03:48.000 --> 03:51.240 So feel free to check that out if you want to learn it in a whole lot more 61 03:51.240 --> 03:55.040 detail. I hope this has been informative for you, and I'd like to thank you for 62 03:55.040 --> 03:56.000 viewing.