Hi Team,
We have a set of Meraki Core switches (MS-425-16P) that are stacked and that are connected to the SonicWall NSA-4700 HA pair. We have aggregated the 3rd port of the Meraki switches and connected it to the primary SonicWall firewall. We have aggregated the 4th port of the Meraki switches and connected it to the secondary firewall. The firewall also has the aggregated ports. The 1st and 2nd ports of the primary firewall are aggregated, and the 1st and 2nd ports of the secondary firewall are aggregated. When we connected the cables from the primary firewall to the Meraki switches, we lost the network connectivity. If we connect any one cable from the firewall to any one of the switches, the network connectivity works, and the scenario is the same with the secondary firewall. If we change the aggregate option to redundancy on the firewall ports, the network turns up while connecting all the cables. Right now we kept the firewall ports as redundant instead of aggregate.
The SonicWall vendor reports that their firewall worked successfully with aggregated ports with some other vendor switches. Even with the Cisco Catalyst switches, it's working; when we connect the Meraki switches, it won't work.
The Meraki core switches' aggregated ports are working fine with Cisco switches. We couldn't have any chance to check the issue with other vendors because the switches are live in the network.
Could anyone guide me to resolve the issue?
