Multiple Layer 3 switch routing

[L4d1k]

Hello,

I am trying to utilize our Layer 3 switches for VLAN routing.
Can I get some assistance with this configuration:
VLAN 1 Default (transport)

192.168.2.0/22
VLAN 10 VoIP

192.168.2.0/24
VLAN 20 Staff

192.168.3.0/22
VLAN 30 Guest

192.168.4.0/22
Local DHCP (not Meraki)
192.168.2.30
Local DNS
192.168.2.30

Firewall MX250
MS350 L3 switches 5x
MS220 L2 Switches 5x

Not sure in which order or if I am missing anything but it looks like it takes 3 different places to set it up:

1. under switches/ configure/ DHCP & routing

Interfaces

2. under switches/ configure/ DHCP & routing

Static routes

3. Security & SD-Wan/ configure/ Addressing & VLANs

Static Routes

Thank you!

[Karsten Iwen]

You are right.

1: All your VLANs that you want to route internally.

2: typically a default route is fine here.

3: Routes to all VLANs that you configured in Step 1. But also all VLANs that you need to segment for security. For example your DMZs. Depending on the environment, I have all my VLANs here and not on the L3-switch.

[Philip D'Ath]

Check out this example.

https://documentation.meraki.com/MS/Layer_3_Switching/Layer_3_Switch_Example

[L4d1k]

Hi,

Yes that is the document I was using.

I just wish there was one with more details and included more pictures or videos with the Meraki interface and what was configured.

Ideally with multiple L3 switches and multiple VLANs

[CMR]

You need non overlapping subnets:

VLAN 1 Default (transport)

192.168.2.0/22 - this includes IP addresses 192.168.0.1 to 192.168.3.254

VLAN 10 VoIP

192.168.2.0/24 - overlaps with the above /22

VLAN 20 Staff

192.168.3.0/22 - this is the same as the first subnet

VLAN 30 Guest

192.168.4.0/22 - this is also the same.

You need unique subnets.

[L4d1k]

Yes, the subnets are unique.

I didn't put the subnets in use I only used it as an example and didn't do the right subnet mask.

For test purposes/24 on all subnets should be ok.