This solution describes a configuration example between X-Series security switches and Cisco Ethernet switches using VLAN tagged interfaces.Some customers want to reduce the number of VLANs sent to the Crossbeam chassis by selecting the most appropriate VLANs that are used on an Ethernet trunk.
Sample Network Diagram
This article explains how Crossbeam and Cisco should be configured to work with LACP.
The Cisco device requires that the management VLAN be advertised to the trunk in order to send the LACPDU. At that point, the VLAN 1 is required on the trunk. The sample configuration may become something such as: