Fully Redundant (Multiple Switches) - LOOP

[Lucas_Ribeiro]

Hi all,

I trying to implementing this scenario but i faced with STP Loop,

My up-link port its BLK.

Both Meraki actin like a hub, then I just have 1 root bridge.

Some advice?

[PhilipDAth]

Make the link between the switches the last port in each switch.

[Lucas_Ribeiro]

I did. I using 3750 Switch

[PhilipDAth]

I would recommend using MST mode on 3750's.

Spanning-tree mode mst

You can also set the port priority to make sure the port does not block.

[PhilipDAth]

Another solution is to use LACP between the layer 2 switches. 

[Lucas_Ribeiro]

Good! It's good by pass , lol THANKS