WEBVTT

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 Okay, so we're done with prepare.

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 We're done with plan.

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 Now we're going into
 the design stage.

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 What do you want to
 get out of this?

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 You want a comprehensive detailed design
 that meets your technical requirements

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 and incorporates specifications that
 will support the scalability of your

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 home-based network.

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 That's what you're trying
 to achieve here.

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 So at this stage is where you're going
 to get into the nuts and bolts

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 of okay, what physical
 chassis do I want?

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 In an ideal world do I want 3750
 switches or 3560 switches?

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 Do I want to buy a Nexus switch if I
 got a big bonus and I want to blow

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 it on that? What do you want
 as far as physical chassis?

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 What kinds of, for the routers that
 have their modular, what types of

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 WICs or network modules are you going
 to need to support your topology?

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 You know, chances are if you're going
 to be incorporating serial interfaces

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 into your topology, you're going to need
 to buy one or more network modules

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 or WICs that support
 serial interfaces.

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 What type of cables you're
 going to need?

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 We're going to talk
 about that, right?

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 Once you identify the WIC or the network
 module that supports your serial

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 interfaces, very important to figure out,
 okay, what's the physical connector

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 of that serial interface?

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 Is it DB9? Is it something else?

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 And then identify the model number
 of the Cisco cable that goes along

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 with that interface.

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 What quantity of memory will you
 need to support your desired iOS?

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 Chances are if you're buying used equipment,
 this isn't a huge concern

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 because you're just going to get
 what you're going to get, right?

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 When you go on to eBay or some other
 website or even Cisco's, well, Cisco,

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 I don't think sells used equipment
 directly, but if you're buying used

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 equipment, you just know up front that,
 okay, you know, it should have

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 enough memory to support
 the iOS in there.

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 It'd be pretty bad for someone to sell
 you a router and they say it supports

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 12.4, but it's the only guy, you know,
 some dinky amount of memory that

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 doesn't really support that.

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 And where do you plan to purchase
 all this stuff from?

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 You know, what website?

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 There are multiple websites
 to get this.

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 So what's the end result
 of the design stage?

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 Once again, we're talking
 about a spreadsheet.

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 Where you're going to run, well, the
 spreadsheet's going to have it at

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 the end of the day.

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 You're going to have a spreadsheet that
 says, okay, I want 3 3560s running

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 12-250SE advanced IP services.

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 I want to whatever, 1841 routers
 running this, this, and this.

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 So that's what you want here.

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 At the end of the design stage is where
 you know what hardware and software

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 you're going to need to purchase.

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 Now we are into the
 implement stage.

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 So by the time you get to the implement
 stage, you know exactly what you're

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 going to be buying.

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 So you're done with that now.

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 You know what you're going to buy.


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 Implement is where you buy it.

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 So implement is where you buy
 it and you implement it.

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 You build your network.

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 So at this stage you're going
 to purchase everything.

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 You're going to rack
 and stack everything.

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 You're going to cable everything.

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 And then you're going to hold your breath
 and cross your fingers as you

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 press the power buttons
 that everything works.

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 So that's what's going
 to happen here.

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 So let's talk about, I've got a few
 slides here on the implement stage,

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 what you're going to be doing.

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 So some tips. When you're buying used
 equipment, make sure you get these

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 three pieces of information
 up front.

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 The return policy.

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 Now what if you buy something
 and it doesn't turn on?

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 It's just broken or it turns on and it
 just spits out nothing but garbage.

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 It's got bugs in it.

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 You've got to know what
 your recourse is there.

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 What current iOS is on the device?


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 Because going back to what I said at
 the beginning, I'm assuming that

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 you don't have access to iOS.

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 Whatever device you purchase, you're
 stuck with the iOS on that device.

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 A lot of people when they're selling
 routers and switches on eBay, they

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 don't list that.

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 They don't tell you what the version
 and what the feature set is of the

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 software on that device.

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 You need to know that.

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 Otherwise you could be stuck with a
 router switch that doesn't support

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 half of what you want to do.

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 Shipping costs. Think about that.

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 You might think, oh awesome.

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 I budgeted $500 for this and after adding
 up everything for these routers

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 and these switches, I'm at $495.

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 Woo, good. Oh, guess what?

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 You just forgot it's going to cost you
 an extra $250 in shipping charges

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 for everything. So think
 about that as well.

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 If you plan on using eBay,
 that's a great link.

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 It's actually a link that's developed
 for buying used Cisco equipment

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 on eBay. I read through it some
 really great tips on there.

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 By the way, if you're not familiar
 already with this, in the front end

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 that you're using to watch this
 right now, there's a files tab.

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 If you haven't already clicked on the
 files tab in there, there's a PDF

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 of this presentation.

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 So everything I'm already showing
 you is in PDF form.

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 So if you haven't already downloaded
 that, it's there for you right now.

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 So you don't have to frantically
 scribble down these URLs.

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 Just download the PDF
 and it's in there.

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 Make sure you purchase
 a flat console cable.

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 You guys ever seen one of these?

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 So you're going to need to connect
 to the console port of your routers

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 and switches. You're going
 to need a cable like this.

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 So if you don't get one from the vendor,
 make sure you find one somewhere.

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 This one actually has a USB connector
 connected to it so I can connect

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 to the USB port.

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 So you're going to want to get a USB
 to DB9 connector and then one of

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 these flat blue cables so you can connect
 to the console ports of your

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 routers and switches.

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 Now specifically when we're talking
 about switches, make sure you buy

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 multi-layer switches.

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 True layer three switches.

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 There's some switches out there that
 Cisco sells, especially a lot of

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 the older ones, that say they can do
 routing, but when you read the data

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 sheet of the switch, all it's capable
 of is static routes, or maybe all

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 it's capable of is RIP.

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 Well, you're going to be really disappointed
 if you buy one of those.

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 So you're going to want to buy a switch
 that supports full multi-layer

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 capability because then when you're
 done with your switching stuff, you

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 can now convert that
 into a router.

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 If that switch supports BGP and OSPF and
 IPv6, now you've got a dual purpose

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 device. A device that can operate as
 a switch and as a router, which is

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 the best of all worlds.

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 Okay. And as far as the interfaces
 on, this isn't really so much of a

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 concern as far as switches are concerned,
 more of a router thing, but

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 make sure that you're buying interfaces
 that are, when it comes to Ethernet,

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 that are at least dual speed interfaces,
 10-100 interfaces, ideally 10

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-100-1000. Why I put this in here is because
 there's a lot of older routers

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 out there that are single speed interfaces
 that are like built in just

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 100-meg fast Ethernet or on the really
 old stuff, just 10-meg Ethernet.

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 And you're going to be really limited
 if you buy an interface that's like

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 that. You're going to have a lot more
 flexibility if you've got dual speed

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 or tri-speed interfaces because then
 you can practice things like, well,

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 you know, what actually happens when
 I have a speed or duplex mismatch?

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 What do I see? If I change the speed
 of my interface, how does spanning

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 tree react to that?

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 So, you know, and ability to connect
 it to older legacy equipment as well.

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 And I already mentioned this,
 but I will reinforce it again.

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 As far as switches are concerned, make
 sure that the model of switch you

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 buy supports private VLANs, IPv6, DHCP,
 snooping, those things that fall

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 into the category of switching
 security features.

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 3550s do not support that.

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 I advise you not to buy CADLIS 3550s
 because they don't support private

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 VLANs. They don't support DHCP snooping,
 so be very careful that whatever

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 model of switch you buy does support
 at a minimum these three features.

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 If you can find a switch that supports
 these three private VLANs, IPv6

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 and DHCP snooping, it probably supports
 all the other stuff as well that

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 you're going to want to do.

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 This also goes back to my recommendation
 I mentioned earlier about the

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 benefits of using real hardware switches
 as opposed to software based

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 switches. For example, if you do have
 access to iOS, if you're using GNS,

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 GNS gets real difficult if
 you want to do switching.

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 You've got some options of use of putting
 in a router iOS that supports

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 a switching module.

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 If you can somehow get a hold of L2IOU,
 which most people cannot, GNS,

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 the newer versions of GNS support that,
 but both of those L2IOU and the

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 switching modules, they don't
 support private VLANs.

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 They don't support DHCP snooping
 and a lot of that other stuff.

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 So that's why you really probably want
 to use hardware switches to get

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 that experience.

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 When purchasing routers, my personal
 recommendation, a router should have

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 at a minimum two fast Ethernet interfaces
 and two serial interfaces.

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 Absolute minimum.

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 Anything less than that and you're really
 limiting yourself on what you

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 can do and what type of topologies
 you can design.

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 On routers, make sure the fast Ethernet
 ports are really routed ports

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 and not switched modules.

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 You can be unpleasantly surprised if
 you buy a router and it's got a four

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 port Ethernet module and it turns out
 those four Ethernet ports are really

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 four Ethernet switching ports.

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 They're not capable of routing.

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 So you don't want to be unpleasantly
 surprised with that.

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 Purchase at least one really long Ethernet
 cable to connect to your laptop

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 and to your hub.

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 You're probably going to want to take
 Ethernet sniffer traces, right?

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 That's probably one of the biggest advantages
 of having a home-based lab

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 as you can put a hub in it somewhere
 and capture sniffer traces and see,

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 you know, what does an MST
 BPDU rlook like,
and all the path attributes in it?

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00:10:38,336 --> 00:10:41,247
So you're going to [want to?] have a long
Ethernet cable to connect your laptop

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00:10:41,248 --> 00:10:44,331
to that hub and then to all
the devices in your rack.

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00:10:46,130 --> 00:10:49,042
I will stress this again, buy a hub.

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00:10:49,043 --> 00:10:52,830
I'm not talking about a switch. I'm
talking about a real old-fashioned hub.

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You probably can't buy them new.

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00:10:54,534 --> 00:10:57,658
I don't think any of the electronic
stores like Best Buy or Circuit City

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00:10:57,659 --> 00:10:59,517
even sell hubs these days.

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But you should be able to go
onto eBay and buy an old hub,

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00:11:04,911 --> 00:11:08,182
so that you can get those sniffer traces.

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00:11:08,183 --> 00:11:11,231
When you're actually implementing is
when you're racking and stacking -

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this is sort of common sense right
here - put the heaviest items on the

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00:11:14,461 --> 00:11:17,878
bottom of the rack so it doesn't
fall over and crush you.

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00:11:19,820 --> 00:11:23,287
Ensure that all the equipment
fans have room to breathe.

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00:11:23,288 --> 00:11:26,269
Don't push everything right up
against the wall where the fans are

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00:11:26,270 --> 00:11:28,658
just blowing their hot air right
into the wall and it's reflecting

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00:11:28,659 --> 00:11:30,745
right back inside the fan
again. You don't want that.

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00:11:30,746 --> 00:11:35,544
Make sure the fans have a little bit
of space to blow all that hot air out.

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00:11:37,894 --> 00:11:41,767
If you plan on tying up your cables
because you don't like messy cables,

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00:11:41,768 --> 00:11:43,211
use VELCRO ties.

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00:11:43,212 --> 00:11:46,993
You don't want to use stuff that's
more permanent than that like

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00:11:46,994 --> 00:11:49,767
zip ties and stuff, because
like it mentions here,

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00:11:49,768 --> 00:11:52,005
you're probably going
to be re-cabling stuff

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00:11:52,017 --> 00:11:54,167
frequently to come up
with new topologies.

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00:11:54,168 --> 00:11:58,218
You don't want to be snipping your zip
ties to have to re-cable everything.

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00:11:58,219 --> 00:12:01,273
VELCRO ties are great for that.

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00:12:04,762 --> 00:12:08,701
Now we are in the operate stage.

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00:12:08,702 --> 00:12:11,831
It's at this stage you
finally get to have fun.

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00:12:11,832 --> 00:12:16,069
You've purchased everything, you've stacked
it, you've cabled it, you've turned it on.

200
00:12:16,070 --> 00:12:20,244
Now you can actually start using it.
Finally.

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00:12:20,245 --> 00:12:23,722
So some tips at the operating stage.

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00:12:23,723 --> 00:12:27,598
Don't leave your devices on 24 hours
a day unless you enjoy paying

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00:12:27,599 --> 00:12:29,625
the electric company
your hard earned money.

204
00:12:29,626 --> 00:12:33,749
This stuff is going to draw a
significant amount of electricity,

205
00:12:33,750 --> 00:12:37,679
don't turn it on when you're not
using it, save yourself your bill.

206
00:12:37,680 --> 00:12:40,491
Make it a habit of saving your text files,

207
00:12:40,492 --> 00:12:44,115
your configs to text files, prior
to shutting off equipment.

208
00:12:44,116 --> 00:12:48,240
Nothing more frustrating than you
spend an hour and a half building

209
00:12:48,241 --> 00:12:53,378
a really complex BGP topology with
redistribution to EIGRP and OSPF

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00:12:53,379 --> 00:12:55,301
and all this stuff and
then you shut off, you

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00:12:55,313 --> 00:12:57,162
go, oh my gosh, I just
shut everything off,

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00:12:57,163 --> 00:12:58,911
I didn't save my configs.

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00:12:58,912 --> 00:13:02,074
Now you've got to rebuild it all
when you start again from scratch.

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00:13:02,075 --> 00:13:04,790
So save your configs to
text files so you can just

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00:13:04,791 --> 00:13:08,130
copy and paste them back in when
you turn your stuff back on.

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00:13:08,131 --> 00:13:12,009
Make sure your cables don't pose
a tripping hazard to yourself.

217
00:13:12,010 --> 00:13:17,615
If you can, keep your door to your
room open to keep your room cool.

218
00:13:17,616 --> 00:13:19,565
If you keep that door
closed, be prepared to

219
00:13:19,577 --> 00:13:21,581
sweat. It's going to get
really hot in there.

220
00:13:21,582 --> 00:13:23,723
Make sure you dust regularly.

221
00:13:23,724 --> 00:13:26,282
You don't want a lot of dust getting
in there and frying out some

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00:13:26,283 --> 00:13:28,659
of the circuits in your
routers and switches.

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00:13:28,660 --> 00:13:32,161
Some tips about hardware.

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00:13:32,162 --> 00:13:36,424
What we have here at INE is-- in
case you're not familiar with this,

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we have-- I told you we've
got our CCIE racks,

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but those are based on virtual routers
which are tied into physical switches.

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Then we have CCNA/CCNP racks, which
use real routers and real switches,

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I'll show you a diagram of what
those look like in just a second.

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So for those of you who are curious
about how we built our racks,

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this is what we're using.

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Now I'm going to give you a little
bit of disclaimer right here, that

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a lot of this stuff is old, a lot
of these network modules that

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you see here are no longer sold,
but that's good for you, because

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if you try to replicate
that, that means you

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can buy this stuff
real cheaply on eBay.

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The stuff that Cisco is
still selling right now,

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you're going to find that is more
expensive than the stuff that's

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gone end-of-sale that they're no longer
selling. That's the cheaper stuff.

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This is what we've got. We've
got a couple of 3845s.

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One of those 3845s serves the
purpose of our terminal server

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as well as our frame relay switch. So
that one router is doing dual purpose,

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terminal server and
frame relay switch. The

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other 3845 is being used
as a backbone router.

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So in our particular implementation,
that second 3845 is preconfigured for

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BGP and OSPF and stuff, and it's
injecting a lot routes into the rack.

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And you can see here the various
network modules we have that

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support all of those serial
interfaces we need for frame relay.

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And then each rack has a couple of
Cisco 2811s, and you can see here

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the various modules in there,
and a couple of 1841s.

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The 2011s and 1841s,
all of those are

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configured with 15.x IOS.
That's kind of nice.

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In case you plan on following suit
here, I provide a URL for you.

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This is a great PDF.

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If you open it up, it shows you a
listing of all these router platforms

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and just dozens and dozens and dozens
of network modules and WIC cards

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and what's supported in
which particular platform.

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If a WIC card or a network module
is end of support / end of life,

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it tells you what the replacement
is. So a great PDF to have on hand.

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As far as switches are concerned,
currently, right now, at the time

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I'm recording this, which
is May 13th, 2005,

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we have 3 switches. One
of them is a 3560.

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The other two are 3550s. But within
the next two to three weeks,

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we're going to be getting rid of
those 3550s and swapping them out

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for 3560s, so all three
of them will be 3560s.

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There's the particular model number in case
you're curious. They're 24-port 3560s.

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This is how our rack is
put together right now.

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If you were to recreate this at
home, it's a total of 6 routers.

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You've got the two backbone
routers there plus

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the four workgroup routers,
and three switches.

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You can see the various LAN and
WAN cabling that we've got.

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I've found that this
topology, I can pretty

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much tweak this to make
any topology I want.

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I've been able to come up with
really complex BGP topologies,

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and private VLANs, and all
kinds of stuff using this.

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If I was to build a home
lab myself, I would

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probably replicate
this at a minimum.

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[music]