HA Supported MS Models

[Sajid]

Hi All,

Hope you all are doing well.

I have one query, Can we configure Meraki MS390 in HA mode.

Actually I am going to replace my CAt6500 with Meraki MS, What would be the right Replacement. 

Thanks in advance.

[Brash]

MS390's don't support warm spare capabilities (VRRP)

https://documentation.meraki.com/MS/Layer_3_Switching/MS_Warm_Spare_(VRRP)_Overview

However you could stack your MS390's if you're looking for redundancy.

[Sajid]

Hi Brash,

Thanks for your prompt response.

How can i achieve redundancy by stacking

Thanks

[Brash]

Take a look at physical stacking in the following doc

https://documentation.meraki.com/MS/Stacking/Switch_Stacks#Understanding_Physical_Stacking

[PhilipDAth]

HI @Sajid .

The MS390 doesn't have a good reputation (search Google).  I'm guessing if you are replacing a Catalyst 6500 you want this to be your network core.  I would not risk doing this with an MS390.  The MS390 is the only lemon in the pack.  All the other switches are good.

I would go to this page:

https://meraki.cisco.com/products/switches/models/ 

Scroll down one page, tick the boxes for everything you want in a replacement switch, and see what the tool recommends.

The MS355 is pretty similar to an MS390:

https://meraki.cisco.com/product/switches/stackable-access-switches/ms355-48x/ 

[JacekJ]

I wonder what you mean by HA.

One disappointment was to learn that you can't do firmware upgrades on the switches without a downtime.

Example:

• you have 2 core switches (MS425) stacked
• you have a bunch of access switches, all of them connected to both core switches, LACP set up and so on
• each core switch has an uplink to the firewall/router etc.

You would expect that you can do a firmware upgrade where only one of the core switches would reboot at a time, thus leaving the whole network operational, but no, this is not supported - you can try to force that using staging, but this is not a supported scenario and the Meraki Support doesn't know how this will behave (I tested that and got mixed results). Obviously rebooting access switches and loosing the clients behind them for a while is expected.

In classic cisco world the missing feature is called Rolling Stack Upgrade.