From the following URL:
https://help.central.arubanetworks.com/2.5.2/documentation/online_help/content/gateways/cfg/interfaces/conf-vlans.htm#Adding
Configuring VLANs on Aruba Gateways
As a layer 2 switch, the Branch Gateway requires an external router to route traffic between . The Branch Gateway can also operate as a layer 3 switch that can route traffic between VLANs.
You can configure one or more physical ports on the Branch Gateway to be a member of a VLAN. Additionally, each wireless client association constitutes a connection to a virtual port on the Branch Gateway, with membership in a specified VLAN. You can place all authenticated wireless users into a single VLAN or into different VLANs, depending on your network requirements. You can also configure an IP address and netmask for a VLAN. The IP address is up when at least one physical port in the VLAN is up. The VLAN IP address can be used as a gateway by external devices; packets that are not destined for the Branch Gateway and directed to a VLAN IP address are forwarded according to the Branch Gateway's IP routing table.
For the deployment, each Branch Gateway requires VLAN interfaces for uplinks and LANs. Each VLAN must have a unique VLAN ID assigned to it. By default, the Branch Gateways are pre-configured with the VLAN 4094.
See the following topics for instructions on configuring VLANs:
Does the gateway have to be configured as a VPNC? or can the gateway indeed route traffic itself without the requirement of an external router between the VLANs?
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steve zajac
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