topic How to Configuration Fully Redundant (Multiple Switches) in Cloud Networking Platform

How to Configuration Fully Redundant (Multiple Switches)

BRC-TH — Sat, 04 Mar 2023 05:06:55 GMT

I want to set up Fully Redundant as in the picture.

1. MX. A and MX. B To MS. What settings do I need?

2. Uplinks MS to MX, what settings do I have to set?

3. Uplinks between MS to MS, what setting must be set?

Device list

MX64 = 2

MS120-24 = 2

Re: How to Configuration Fully Redundant (Multiple Switches)

MyHomeNWLab — Sat, 04 Mar 2023 05:29:55 GMT

I think the main important setting elements are as follows.

* Configure Warm-Spare for Meraki MX device redundancy; Warm Spare operates in Active Standby.

MX Warm Spare - High-Availability Pair - Cisco Meraki
https://documentation.meraki.com/MX/Deployment_Guides/MX_Warm_Spare_-_High_Availability_Pair

* Meraki MX does not speak STP. Meraki MX transmits received BPDUs transparently.

Therefore, Meraki MS runs STP for loop prevention purposes (Default value: Enabled).
Note that Meraki MX does not have LAG feature.

MX Layer 2 Functionality - Cisco Meraki
https://documentation.meraki.com/MX/Networks_and_Routing/MX_Layer_2_Functionality

I think the other setting elements (VLANs, WAN Load Balancing, etc.) are up to your network design.

Re: How to Configuration Fully Redundant (Multiple Switches)

Brash — Sat, 04 Mar 2023 06:13:29 GMT

As said above, this is fundamentally possible but you will have a loop. STP will block 2 of the ports during normal operation but they should come active in the event of a failure (at which point there would no longer be a loop).

Re: How to Configuration Fully Redundant (Multiple Switches)

Karsten Iwen — Sat, 04 Mar 2023 07:35:59 GMT

I wrote a little bit on this:

https://cyber-fi.net/index.php/2022/03/13/how-to-connect-the-meraki-mx-to-ms-switches/

Re: How to Configuration Fully Redundant (Multiple Switches)

Philip D'Ath — Sun, 05 Mar 2023 19:32:20 GMT

Personally, I only connect an MX to a single switch. I have experienced two many outages due to spanning tree connecting an MX to two different switches.

What's the point of HA if it increases unplanned downtime.