Uplink/Port settings from L3 Core to (L3?) MX

[JackShep]

Hello Everyone, 

1.) We have an MX105 Pair connecting to an MS425-32 stack thats acting as our core at a site.

2.) The MS425 stack is handling all layer 3 and has OSPF running

3.) the MX105 only has a transit VLAN on it

My questions are:

How would you configure the uplinks/Transit VLAN between the MX and Core? 

On the MX should I even define VLANs or should we use the default Single LAN ? The Single LAN option shows as VLAN 0, so what should the port settings on the switch side be?

Should I be allowing all VLANs to pass for the Merakis to track clients correctly?

Should I be using Storm Control on the MX uplink ports?

[alemabrahao]

Maybe it will help you.

https://documentation.meraki.com/Architectures_and_Best_Practices/Recommended_Topologies/MX_and_MS_B...

[JackShep]

Thank you, I just noticed that they are using access ports between the MX and the L3 Stack. I had everything using trunk. Wonder if thats part of the problem. 

[DarrenOC · Accepted solution]

Hi @JackShep , i would configure both sides as Access ports and route between the two devices.  This is described in the link provided above using Vlan 50 and a /29 subnet configured on both the Mx and switch

[PhilipDAth]

>On the MX should I even define VLANs or should we use the default Single LAN ?

Personally, I always use VLANs.  And even when I use access ports between two devices, I still use the same VLAN number on both sides.

Then I know, no matter what device I am looking at, if I see vlan "x", what the intention or purpose is/was.

Fault finding can be much harder than building a network, so I want solutions to help me with the on-going operation of the network.

[alemabrahao]

I personally don't like routing in the Firewall, I always prefer to use an L3 switch for this and just create a link between the Core and the firewall.

Of course, this depends a lot on the project or client's needs, and also on the size of the site. On small sites, often only the firewall already meets the client's needs.