All language subtitles for Free-CCNA-Configuring-STP-PVST-Day-21-Lab-CCNA-200-301-Complete-Course_en

This is a free, complete course for the CCNA.

If you like these videos, please subscribe\n

Also, please like and leave a comment, and\n

Also, remember to download this practice lab\n

If you want more labs like these, I highly\n

the CCNA, click the link in the video description\n

It’s a network simulator like packet tracer,\n

of these guided labs to not only help you\n

but also deepen your understanding of the\nexam topics.

I used it myself when studying for my certifications,\n

Watch until the end of this video, we’ll\n

If you want to get your own copy of NetSim,\n

In this lab we will do some basic STP configurations.

STP runs by default, so you don’t actually\n

leave it at the default settings there is\n

So, it’s a good idea to explicitly configure\n

and also set different roots for different\n

the load of the network traffic.

Step 1 in this video is to use the CLI to\n

root bridge, and the STP role and state of\n

First let’s get into privileged exec mode.

We only need one show command for this.

Information is displayed separately for VLAN1\n

any configuration yet their settings will\n

role of each port will be the same also, so let’s\n

SW1 is not the root bridge, notice the MAC\n

As for the port roles, you can see them here.

F0/3 is the root port, so I’m guessing SW2\nis the root bridge.

Let’s go on SW2 now to check if that is\nthe case.

First enter privileged exec mode.

In the root ID section, it clearly states\n

You can also see that all of its interfaces\n

This is the case for both VLAN1 and VLAN2.

Without any specific configuration, each VLAN\n

will be the same in each VLAN.

We know its not the root, but which port do\n

It should be F0/2, because it’s directly\n

fastethernet, there are no gigabit ethernet\n

Indeed, F0/2 is the root port, and F0/1 is\ndesignated.

Its F0/1 interface should be the root port.

As expected, F0/1 is the root port, also F0/2\nis blocking.

The role says ‘alternate’, this means\na non-designated port.

Step 2 is to configure load balancing by making\n

root for VLAN2, and the opposite on SW2.

Go to global config mode, CONF T. Let’s\n

SPANNING-TREE VLAN 1 ROOT PRIMARY.

Remember to include the VLAN in the command,\n

Next, the secondary root for VLAN2.

SPANNING-TREE VLAN 2 ROOT SECONDARY.

Now I’ll hop on to SW2. CONF T. SPANNING-TREE\n

SPANNING-TREE VLAN 2 ROOT PRIMARY.

So, what is the STP role and state of each\nport now?

Well, here on SW2, in VLAN2 all ports should\n

be the root port, because it’s directly\n

So, for VLAN2 it is still the root, but for\n

The other ports are designated ports in a\nforwarding state.

In VLAN1 all ports should be designated, but\n

So, indeed in VLAN2 F0/3 is the root port,\n

In VLAN1 however SW1 is now the root bridge,\n

In step 3 and step 4 we are going to manipulate\n

First up, we will increase the cost of SW4’s\n

it selects a different root port.

First, let’s confirm that the current root\n

Let’s view the spanning tree for VLAN1 only.

Okay, as expected F0/2 is the root port, it\n

Before doing so, what do you think will happen?

What is the first criteria in selecting the\nroot port?

It’s the cost, so increasing the cost to\n

SW4 to select a different root port.

The configuration is done from interface config\n

SPANNING-TREE VLAN 1 COST 100.

Now let’s view the spanning-tree just for\nVLAN 1 again.

Okay, as expected F0/2 is no longer the root\n

and now F0/1 is the root port.

For step 4 we will increase the priority\n

priority number, however in STP a lower number\n

so really we are lowering the priority to\n

Will this effect SW3’s selection of a root\nport?

First up, let’s check SW3’s root port\n

Now, if we set the priority of SW1’s F0/1\n

Sender port ID is actually the last tiebreaker,\n

Because F0/1 has a lower root cost than F0/2,\n

Let’s go configure that port priority on\nSW1.

Enter interface config mode, INTERFACE F0/1.

SPANNING-TREE VLAN 1 PORT-PRIORITY 240.

First up let’s view that priority here on\nSW1.

Here for interface F0/1 you can see the priority\n

the priority has increased to 240.

Use the up arrow to return to the previous\n

As expected, there is no change, F0/1 is still\nthe root port.

Finally, let’s configure PortFast and BPDU\nGuard.

Before doing so, let’s test portfast.

I will turn on link lights for this, click\n

Next, let me delete the connection between\nSW3 and PC1.

Now I will connect them again, PC1 to SW3’s\nF0/3 interface.

After reconnecting the two devices, SW3’s\n

and learning states before it can forward\n

Let’s go on the CLI and configure both\n

SPANNING-TREE BPDUGUARD ENABLE.

Okay, that’s it, pretty simple configurations.

Now that portfast is enabled, I will delete\n

reconnect them again, PC1 to SW3’s F0/3.

Notice that it moves immediately to forwarding,\n

Now, because BPDU guard is enabled, if we\n

is received, the interface should be shut\ndown.

I’ll delete the connection once more, and\n

When SW3 receives a BPDU from SW4 on its F0/3\n

a loop, and now the link light is red.

Let’s delete that connection again, and\n

Now let’s return to the CLI, and to enable\n

I will SHUTDOWN, and then NO SHUTDOWN the\ninterface.

Okay, now F0/3 is back up and running.

Okay, since we finished our experiment I’ll\n

Next up let’s take a look at a lab in Boson\nNetSim.

Okay, for today's Boson NetSim lab preview,\n

The reason for that is spanning tree configuration\n

so it's not included in Boson NetSim for CCNA.

However I want to show you a lab anyway, so\n

The one we're going to look at is Spanning\n

So you click on the lab here, and then click\non 'load lab'.

Create a VTP management domain for distribution\n

primary and secondary root bridge for the\nVLANs in the network.

So this is definitely a CCNP-level lab.

It's quite challenging, quite extensive, and\n

asks you a lot of really good questions to\n

And I think I've said it before, but that's\n

It's not all about the configuration, it really\n

you...help you get ready for the exam.

So these are commands you need to know.

Although this is a CCNP-level exam (*lab),\n

SHOW SPANNING-TREE, SHOW VLAN, SPANNING-TREE\n

So these are all commands you already know.

So although this lab might be a challenge,\n

So, I'm not actually gonna do the configurations\n

through the lab and see what kind of tasks\nyou're asked to do.

Task 1 is perform the initial configurations.

So these aren't actually spanning-tree configurations.

These are trunk configurations, VTP configurations,\n

So that's something I really like about this\n

It helps you review other topics you've studied.

Okay, plan primary and secondary root bridge\nconfiguration.

So in task 2 you're not actually doing any\n

answering some questions, thinking about what\n

you actually implement and verify the configurations\nin task 3.

So what kind of questions are you asked?

For example number 1, how is the information\n

So that is in this explanation here.

Your network engineer has determined that\n

and VLANs 4 through 6 represent the other\n

And if you don't know how to answer one of\n

you can find Boson's explanation.

So these are Boson's answers to those questions.

Okay, task 3 is actually implement and verify\n

So, configure the primary and secondary root\n

And task 4, this is something you're not gonna\n

Look at these questions, how many root ports\n

How many designated ports can a non-root switch\nhave?

And then here, this one I really like.

Start to document the network.

So, you're going to have to use SHOW commands\n

port, and path cost to root of each of these\nswitches.

And then here, use the network diagrams below\n

ports, alternate ports, and blocked ports.

And then question 5, what path will a VLAN\n

So again, these are just really good questions\n

And if you ever have problems answering these\n

solutions and you can find Boson's explanations\nhere.

For example, these are all the blocking ports\n

Okay, so if you want to get a copy of NetSim,\n

see these are really great, in-depth practice\n

the show commands, the configuration commands,\n

So if you want to get a copy, please follow\n

Please subscribe to the channel, like the\n

with anyone else studying for the CCNA.

If you want to leave a tip, check the links\nin the description.

I'm also a Brave verified publisher and accept\n