23. 3.8 iPXE
Now we reach to section three eight, that is last. In this particular section we have to learn understand about day zero provisioning methods ipxe, PNP and ZTP. After this video we have three follow up video where we’ll learn more about ZTP and PNP or ZTP and PNP. So let’s understand about day zero provisioning and IPX. Now what we want, what company want is ZTD zero touch deployment. Now, for zero touch deployment, what are the methods we should follow? Again, after this video you have three videos related to GTP and PNP where we have labels. You can understand that without doing much on device, how that device will come into the production, that’s the entire idea. Maybe in branches, maybe in remote locations, you don’t have a skill engineers who can do the configuration or you don’t want. Even so, in those cases someone can plug the device with the ISP and the device will get the configuration, the image, it will up and running, it will join the fabric.
That’s the whole idea about the zero touch deployment or ZTD. What we are doing at present before Sqvan or before SGN solution is that new device plug in software upgrade, initial configuration. You are getting the device from the Cisco or from the vendor. Then if it is not up to date, it means if the image is not new, you’re upgrading the image, then obviously you are putting the license file, the pack files and all. You’re upgrading the license as well. Then you’re doing the configuration, whatever standard configuration you have, you’re putting that and then it is going to the operation, maintenance and T shirt. So day zero, day one and day N is defined like this onboarding service provisioning and the monitoring and analysis.
But what is happening now, it is means in modern era where we have the PNP IPX methods and these type of technologies in this what we are doing, that order of magnitude quicker automation device premium. So at a time you can deploy a number of devices, just matter of plugging the device in the network and that’s it. Day one again the automation, friendly, flexible, predictable, model, secure, bring up, all those things will be there and again in terms of monitoring and analytics. So we have the push mechanism, consistent, machine readable, high performance, real time. That means we are moving towards the digital environment where we have to process bulk amount of data. And if you want to connect our devices with big data or such type of analytic tools or some type of databases and analytics, then it should be fast. So we can’t use the traditional method, it’s not recommended or it’s not supported as well nowadays that we can use the traditional method to analyze the bulk amount of data, rather than we can use the model driven telemetry.
So the analysis and the table shooting and the recommendation will happen in phased manner or step by step ZTP components. What we have we have IPX and ZTP. ZTP will go and learn more. Now ZTP, but this is ZTD zero touch deployment. Again, inside zero touch deployment you have component like Ipixi, ZTP and PNP. Correct. So IPX. Let’s focus on IPIX. Because coming three videos are related to ZTP and PNP in IPX. Also the device is getting the configuration either from the various Https, TTPs or TFTP server. It is resolving the DNS and Ghcp as well. Now how it is supported? So I Pixie is now open source boot firmware. And suppose if you know the Windows term or Microsoft term, that they come with the Pixie environment where you have centralized Pixie servers, from where all the Windows Server or at a time you can upgrade or at a time you can spin.
Actually n number of Windows Server. That’s the concept. So one place you have the image and that image you can think as a distributed image that can be published or that can be pushed to N number of Windows Server that is in the Pixie. And then each and every servers at a time they will up and running. So the deployment will be very faster automated with help of Pixie. That is again used inside the Cisco environment with help of network. So how it is working? Pixie supports management interface, IPV four, IPV six fully backup backward compatible with PXE. And again this is Ipxe PXE with several enhancements like boot from web server via Http, boot from local attach storage, USB memory stick control and boot process with the script and menus DNS support. We have one flowchart starting. You want to obviously boot the system. So do you have a valid image? Yes, booting started to have valid image in USB? Yes. Then download and run the installer success boot install no, then it will go to the Pixie management link. Because for Pixie we need management link, download and run the installer successful and boot install the image. Correct. So this is the process by which the Pixie is working. Next video onwards, we’ll learn more about the ZTP and PNP.
24. ZTP SDWAN
We have multiple ways to configure the device we have manual way and we have ZTP in VH and we have PNP that is plug and play in the CES devices GTP is nothing but zero touch provisioning. So what is happening in this case that at the moment you go and connect the device, it will take the odd automatic configuration and the device will come up and it will be the part of the fabric that’s the whole idea behind the ZTP means. While you are doing the ZTP process that’s the zero touch provisioning, everything should be taken care by. The Victoria fabric device will come and take the IP, take the configuration, take the image and it will be operational. Okay, so let me try to explain this thing here, let me try to draw and what are the steps involved here? Although we have the separate diagram and the flow from where we can easily understand so what is happening? First of all you take the box so once you have the box for example V edge and there is a specification that which particular interface you should connect V Edge with the ISP so suppose I connect Gigi zero two to the VPN zero now what are the steps? What is going to happen?
So this device is coming with default configuration. It has some default system configuration. It has some default VPN zero configuration. If you go and check VPN zero configuration that I will show you later on, you’ll see that inside VPN zero they may have IP DHCP client means they can take the IP from the ISP and inside the system configuration you’ll find that the vBond IP will direct towards ZTP Viptella. com. So that means you should resolve ZTP Viptelacom and you should get IP from DHCP to ZTP process to be completed. So that means that first thing you should do the power on the device. Then it should take the DHCP and it should resolve the DNS.
At that point of time it will be redirected towards ZTP Viptella. com and from GTP Viptella. com they will check the serial number and the chassis ID of this device and then they will further redirect towards local Vborn. So for example local Vborn. com whatever my organization we name is there. Now, once we reach up to this point of time again we know what we bond is doing. They are checking the serial number and chassis ID and V. Edge is checking the name. But at this point of time these devices don’t have the system IP. So he will use the null IP IP to form the connection with the vBond. Once We Bond will authenticate he will redirect this or he will offer the V manage IP. Now, as per the we manage IP and configuration. So point number six or step number six will happen like this. So we manage will try to establish the connection with the V edge.
And here we are pushing the template. So once these guys are authenticating with themselves then suppose if the Edge device is not up to mark in terms of the image or the software. So we manage will push the image and update the image of the edge device at the moment he will reboot. We know at the moment that the edge device will get rebooted. First of all, he will try to contact with Vmont always. So they will communicate with the vBond and then again, V. Bond. Now, this time he has a system IP. So this time, he will use the system IP, form the tunnel with vBond. And then again, vBond will redirect or will offer the IP for the Vmanage. And Vsmart. And finally you see by all the steps by the end of that that we manage and Vsmart has permanent connection with V Edge and this V Edge having temporary or transient connection with V Wand.
So this tunnel will clear down and you have the permanent connection. And this device will become the part of the fabric. So that will be the overall steps. Let me go and show you the same thing. Here we have in the slides as well so you should reach to the Gtpvtaila. com and these interfaces we are going to use vs you should connect gigi zero vs 2000 you should connect gigi 20 then V edge 100 you should connect zero four. And now here you can see the sequence of steps that is happening here. So power on the device. Once you power on the device, they will go and resolve the DNS. They will get the IP resolve. The DNS. They will try to contact ZTP Ppl. com. From there it will get reacted to von.
They will form the connection with Vbon. Then with the we manage then device will get rebooted again. They will form the connection. With the Mont. Then again it will go and form the connection with V manage. At this point of time we should push the template from the V manage to the Vs device. And these are the details steps you have so you can go and read out these steps whatever we have discussed same steps from one to eleven we have one point to note here is that while you are doing the GTP process you should push the configuration device. Template configuration from your we manage to the edge device. Otherwise the GTP will get failed. Okay, so what I’m going to do here that I’m going to log into the device or let’s break here. Let’s just stop here. And the next section I will show you the GTP process in detail while logging the device. Bye.
