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Okay, Snake, we don't need you.

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I don't mind Python as in the programming language, but I don't particularly like snakes.

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You can watch this video as an example where I had a encounter with a black mamba in Africa.

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When that snake bites you, you've got about 30 minutes to live or 60 minutes, and then you're dead.

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So fortunately nothing happened, but it was a very close encounter.

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In this video, I'm going to show you how to back up iOS configurations.

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I'm going to show you two methods to do that.

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The first method is using cron, which is very similar to Cron on Linux.

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It basically allows you to schedule things.

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So we're going to schedule automated backups of Cisco routers and switches.

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You can back up the configurations, you can do other things.

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In a previous video, which I've linked here, I showed you how to use TCL scripts to do things, but

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you can use Cron to schedule TCL scripts.

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The second method is to use archiving.

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Both these methods have been available in the Cisco iOS for a while.

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I don't need Mr. Python here because we are not going to be using Python.

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In other videos, I have shown you how to use Python to backup configuration, so have a look at this

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video.

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If you're interested in doing that.

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I'll also create some updated videos because my Python videos on YouTube are quite old at this point.

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But again, Cron has been available in the Cisco iOS for a while.

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As you can see here, it's been available since 12.2 on some versions of iOS, so it's been available

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for a while.

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Archiving provides you with many features.

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It's also been available in the Cisco iOS for a while.

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So as you can see here, 12 to 12.3.

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It's also available in Cisco, ICSI.

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Okay, as always, because this is YouTube.

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I need to ask you, please subscribe to my YouTube channel.

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Please like this video if you find it useful and please click on the bell to get notifications when

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I post a new video.

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Okay, so I've spoken enough now.

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Let's get started.

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I'm using a Janus three topology here.

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I've got three Cisco routers.

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These are just traditional Cisco routers in my example and router two show version.

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Notice we're using the iOS version 15.6 to T.

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So this is just standard Cisco iOS.

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It's not iSCSI.

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I've also got a ubuntu server here.

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The server is actually the toolbox server available in genius three.

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And what's nice about this docker container engine is three is we have tftp.

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So if I go to the ftp boot directory.

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There are a bunch of files already here, but what I'll do is I'll remove all the files in this directory.

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So Liz now shows us that there are no directories in this TFTP boot directory.

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No files currently exist in this directory.

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But what's nice about this docker container is that it runs a FTP server.

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Now if you've got a Windows PC, you could use different FTP servers.

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You could use SolarWinds, which is a free FTP server, and I've linked that below.

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Or you could use TFTP 32 as an example.

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There are multiple or 64 if you prefer.

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There are multiple TFTP server options available for free so you don't have to pay for a TFTP server

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today.

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Okay.

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So this ubuntu host has a IP address of ten .1.322.

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That's the IP address that we're going to back up configs to.

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Now on router two, that's the router here in our topology.

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You could do this on multiple routers, but I'll just do this on router two.

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I'm going to use the command cron.

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So kr0n.

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In this example, I need to specify a policy list and an occurrence.

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So basically what are we going to do and how often are we going to run the commands?

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Okay, so cron, let's say policy list.

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Give it a name.

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So let's say backup config, whatever name you like.

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So just give it some kind of name.

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And then what we're going to do is run a CLI command and in this example I'm going to type show run

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type redirect to FTP.

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And again, you could use CEP or something else if you want.

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The Ubuntu host has this IP address once again.

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So ten one three, two.

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So I'll paste that in.

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And give it a name, let's say r to show run cfg.

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So that's the file name where we're going to save the configuration.

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Okay, cron occurrence.

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So give it a name.

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Let's say backup every minute, whatever you want to use.

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Notice here we have two options in how often are we going to run this?

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So in one minute, in my example or at a specific time.

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So I'm going to say in one minute we can specify minute or hour, minutes or days, hours and minutes.

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So in one minute recurring, what I'm going to do is run the policy list of backup config.

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So scrolling up.

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That's the policy that we created back up config.

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So that's the one that we're going to run.

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So end and that's all you need to do really.

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So show.

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Cron schedule shows us that our backup will run in 38 seconds, 35 seconds, 34 seconds.

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Going back onto the TFTP server.

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Notice we don't have a configuration on the TFTP server because it's going to run in 23 seconds.

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Before that runs, let's do a debug.

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So debug cron all so that we can see what's going on.

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Show Cron schedule once again.

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14 seconds to go.

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No config on the TFTP server.

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9 seconds 7 seconds.

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Sorry about this delay.

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I'll speed this up if you like in future.

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Now, one of the things I want you to see is notice.

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Before it ran it was inactive, but as soon as it ran, it became active.

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So it's active while it's running.

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And you can see here, this is what happened.

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The command was called show run redirect config to the TFTP server.

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So that command has run, it'll run again in 56 seconds or 16 seconds in this example.

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Notice the config is there.

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If I type more are to config.

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Notice there is the running configuration of my router.

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It's been backed up to the TFTP server.

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Now it's actually just run again.

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So the config has been backed up once again.

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So I could remove this or in this example, let's just move it to our 2v1 config.

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So Liz now shows us that we've got the old config here.

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When this runs again in 31 seconds, we'll get to the new configuration on the TFTP server.

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Now one of the questions people often ask is, okay, how do I get a timestamp and I'll show you that

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using the archive method.

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Okay, so it's just run list again.

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Notice there's our configuration.

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So once again more are to see if there's a running configuration backed up to the TFTP server.

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Okay.

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So that's the first method cron.

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You can get this to do many types of things.

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They've got some examples on the Cisco website.

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You can find a lot of examples of this online as well.

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You can get it to run TCL or tickle scripts.

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You can get it to do all kinds of things.

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It's basically a scheduler, just like you have in Unix or Linux.

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Okay, next one is archiving.

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Okay.

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Archiving allows you to do a lot more than just back up configs.

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You can restore configurations, you can have a history of configurations.

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Very nice feature available on Cisco iOS.

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So in global config mode archive.

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What option are we going to use?

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We're going to use log config.

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So we're going to log our configuration.

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And actually you can see here, cron has just run.

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So what I'll do actually is turn off the debug so do an all basically disable debugging that's not part

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of the archive command.

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So just so that doesn't get confusing, I'll do that again.

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I typed archive and then I typed a log config pressed enter and now what I'm going to do here is enable

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logging.

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So logging enable I'm going to hide keys which basically suppresses output e.g. passwords when displaying

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logged commands.

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We don't particularly want our passwords displayed.

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So hide keys.

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The next step is exit.

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And what we want to do here is specify a path.

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Notice the options.

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There are many options here.

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We could use flash.

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So a right to the configurations, to the flash or the router.

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We can send it to a TFTP server, we can send it to a secure copy server.

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But in our example I'm simply going to use tftp so tftp forward slash forward slash ip address of the

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TFTP server is this ten 132

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and.

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What I'm going to do here is specify a date, so notice dollar H, hyphen or dash.

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What I also want to do is back up the configuration whenever the configuration is saved.

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So as soon as I save the configuration, I want to write it to the archive.

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You can also specify time period now.

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Typically you don't want to do it as I'm doing it.

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You have one minute you might use a value like this, which is once a week, but in my example, I'm

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just going to specify one minute because I want it to back up continuously now to show archive.

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This is the most recent configuration so it's actually backed it up a ready to the.

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TFTP server show clock.

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Notice the date 12 September the time 11 4958 so this got backed up at 232.

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That is the most recent configuration and that's what I'm seeing here.

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Now clear the screen, Ellis.

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L Notice we can see another configuration has been backed up, so we now have two configurations on

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the TFTP server.

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And if I type show archive on the router notice we can see most recent configuration is there.

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Okay.

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So let's do that again.

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As soon as I type w or so, write my configuration and then type show archive.

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Notice an archive was made back on the Ubuntu server.

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There's our newest archive show archive.

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Right.

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The configuration.

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Show Archive.

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This is the most recent one.

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Now back on the TFTP server.

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Originally we had two.

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Now we've got three and it's actually done another archive because I'm making it archive every minute.

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So copy, run, start, save the configuration back on the TFTP server.

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Notice we've got another backup of configuration.

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Okay.

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So that was fairly simple.

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I've shown you how to archive the router's configuration and point it to a TFTP path.

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It's going to run every minute in my example.

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Now that's probably way too much, but just for this demonstration that works.

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It's also going to archive the configuration when I save the configuration.

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Show Archive.

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Notice we can have up to ten displayed on the router.

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So what I'll do is I'll simply do a bunch more.

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So do another one.

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Notice we are at nine as a number here.

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Do another one.

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Show Archive Notice ten is the most recent.

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Notice we lost zero there.

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Say that again.

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Notice we're at 11.

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We lost one.

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But those configs still exist on my TFTP server.

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So there's the original config.

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Notice where all the way to 11.

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So these are two great ways to automate the backup of router configurations.

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Once again, show run.

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I'll use forward slash here to search for archive.

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There's our archive configuration and as always, I'll put this below the video and here is the cron

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configuration.

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Now with KRON.

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One thing I forgot to show you is the option.

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So I'll just paste that configuration in here.

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Notice with KRON you can get it to run at a certain time.

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So notice at 11 p.m. sunday reoccurring and the policy that's going to run is this one.

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So show run forward slash kron.

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I've got it running every minute.

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Probably want to remove that.

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And then I've got it running every Sunday evening.

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The issue here is it's going to overwrite the config on the TFTP server.

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Archiving makes this a lot easier.

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Very simple configuration to archive your config to a TFTP server or FTP server or secure copy server

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every week, every minute, whatever you decide to do.

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Okay.

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So hopefully you found this video useful.

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If you have, please.

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Would you like it please?

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Would you subscribe to my YouTube channel and please click on the bell to receive notifications when

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I upload a new video.