HA Recommended design

[giovanitestoni]

Hello!

Anyone implemented this design that could share feedback or considerers?

I'm in doubt how is the beharvior of STP in this case.

[ww]

Assuming left switch is stp root and using rstp

Right switch will block its highest two ports.

[KarstenI]

The most important aspect of this design is that your BPDUs can flow freely through the MX. The easiest way to achieve this is to leave the default VLAN 1 as native VLAN in place.

[PhilipDAth · Accepted solution]

I never put in the cross-connects.  I only ever connect one MX to one switch.

I've never had an outage using this approach.  I've had many outages prior to this by using dual links.

IMHO, the redundant links cause more outages than they prevent.

[giovanitestoni]

Thanks you all!

I will make different. I will do not use STP.

[cmr]

I second @PhilipDAth, we have constant master failover issues at sites with cross connects and Meraki switches.  If you have a Cisco IOS stack then you might be luckier.  We physically cross connect and then soft disable the connection at the switch end for each secondary connection.