Office Hour 3 Options for L3 Routing | Cisco CCNA 200-301

Multiple options explained and demonstrated, including router on a stick (ROAS) and Switched Virtual Interfaces (SVIs) on a multi-layer switch. (Configs below...)

Configs used in demo:

8888888888888888888888
R2 as router
8888888888888888888888

! Switch

config terminal
interface range gig 0/1-2, gig 1/3
switchport mode access
switchport access vlan 10
exit

interface range gig 1/1-2, gig 0/3
switchport mode access
switchport access vlan 20
end

! R2

conf terminal
interface gig 0/1
description vlan 10
no shutdown
ip address 10.10.0.2 255.255.255.0
exit

interface gig 0/0
description vlan 20
no shutdown
ip address 10.20.0.2 255.255.255.0
end

config terminal
ip dhcp pool VLAN-10
network 10.10.0.0 /24
default-router 10.10.0.2
exit

ip dhcp pool VLAN-20
network 10.20.0.0 /24
default-router 10.20.0.2
end

8888888888888888888888
! R1 as Router
888888888888888888888

! Switch
conf terminal
int gig 0/0
switchport trunk encapsulation dot1q
switchport mode trunk
end

! R1

config terminal
int gig 0/0
no shutdown
exit

int gig 0/0.10
description VLAN 10 Subinterface
encapsulation dot1Q 10
ip address 10.10.0.1 255.255.255.0
exit

int gig 0/0.20
description VLAN 20 Subinterface
encapsulation dot1Q 20
ip address 10.20.0.1 255.255.255.0
end

!DHCP Pools on R1

config terminal
ip dhcp pool VLAN-10
network 10.10.0.0 /24
default-router 10.10.0.1
exit

ip dhcp pool VLAN-20
network 10.20.0.0 /24
default-router 10.20.0.1
end

888888888888888888888888
Multi-layer Switch
88888888888888888888888

! Switch

config terminal
interface vlan 10
no shutdown
ip address 10.10.0.100 255.255.255.0
exit

interface vlan 20
no shutdown
ip address 10.20.0.100 255.255.255.0
exit

ip dhcp pool VLAN-10
network 10.10.0.0 /24
default-router 10.10.0.100
exit

ip dhcp pool VLAN-20
network 10.20.0.0 /24
default-router 10.20.0.100
end

Enjoy, Like, and Subscribe. 😃

Free YouTube Playlists from Keith:

And…

#KeithBarker #CCNA #200-301

[melr]

Hello Keith, thank for providing this content. I passed my CCNA thanks to your networking videos and contagious enthusiasm.

[SoulJah]

Glad to see that these concepts are still relevant since I got my CCNA in 2016. Thank you for this refresher.

[juniorgonzalez]

Your energy is amazing Keith, you make learning fun. If every teacher had your energy we would all be in a better place. Thank you for the content !!

[jalalhaider]

Sir Keith since your CBTz I am your fan amazing skills and teacher you are 👌👌👌

[DanBarnaby-pe]

Thanks for making all of these great videos! Gonna send all the young ppl over to get the views up.

[sdbdub]

Thank you Keith for the time you put on your videos! It's easier to watch networking videos again. My question is why the switch from PT to EVE-NG? And what happened to GNS3? You have been very motivational for me to get my CCNA, so I'm refreshing with your videos.

[surajrajendrapandey]

Thanks Dear.. Please keep uploading such a great video

[ryanrrothwell]

Thanks again Keith. I'm still just using Packet tracer but I guess its time to get into GNS3 too.

[cristianof]

Hello Keith
Great content as always.Just on the Router on a stick example wouldn't be more secure to use the switchport trunk allowed vlan add 10 and 20 also?

[kajupu]

Hello Keith, Your Video was very informative.
I am using M1 Mac.
EVE-NG is not available, but I learned a lot.

Thank you very much.

[reza]

I was configured ROAS method in an enterprise network and the networks goes so slow, then replace with L3 SVI method. After a search, I found that router switching performance is lower than multi-layer switches. Is it true?

[Nk-cycu]

Keith a little more discussion @ 14:38 frame 62 vlan 0. i know its associated to priority packet but want to hear on what you have to say on vlan 0.

[sabdielisstech]

Great video! The third method is called inter-vlan routing?

[pepperjackshack]

I like to think about it in terms of how are the devices used. Switches are access client facing and should be able to route, applying ACLs to prevent unauthorized access. Firewalls are default gateways for security filtering. Routers do routing for BGP OSPF etc. Routers you really want on the outside of the network or handling routing tables that’s why router on a stick isn’t really ever used more like firewall on a stick. 4th option is an ASA that can route

[scottspa]

Wait, isn't the whole point of a router to break up a broadcast domain? What happens to a broadcast domain if using multilayer switch. ?

[fmartinez]

I passed some certifications but you video clicked things for me especially when to use router on a stick and trunking

[masenyarametse]

Hello Keith

Just wanted to know if your using IOL for your Switches/Routers or if your using vIOS.

[devnetwise]

Thanks! Which simulation software do you use?

[scottspa]

Also, Keith is ALL ABOUT multi layer switches. They're crazy expensive, though. I think ROAS is more practical. But I'm not a CCIE, like Keith.

[stswebhusesele]

Can I please be assisted, my end devices are unable to communicate with each other between the vlans but, they can communicate within the same vlan, I did this on packet tracer. What could be the problem?