About tunnel Ethernet networks

A tunnel network is a single dedicated network with a dedicated set of uplink ports used to pass a group of VLANs without changing the VLAN tags. You may want to use tunnel networks if you want to expand beyond the current total of 1000 networks per logical interconnect and 162 networks per downlink port, or if you want to control the resources and QoS. You can have a tunnel network with a maximum of 4094 VLANs.