Configuring WAN Uplinks and Ports for WAN Interface for a VPNC

This section defines uplink interfaces by creating WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance.-facing VLANs Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN., labeling them as uplink interfaces, and assigning them to the desired uplink ports.

  • When you add a new INET interface on a VPNC, the Overlay Tunnel Orchestrator (OTO) tunnel scanner scans all the uplinks between the Branch Gateway and VPNC, and then reruns the matching algorithm. There are possibilities that existing tunnels might be replaced with new tunnels to utilize new INET interface created on the VPNC. However, when the OTO scanner tries to match Branch Gateway uplinks with VPNC INET interface it first looks for a precise tag and If there is no precise match, then for each uplink on the Branch Gateway OTO tries to match an unused VPNC INET interface.
    Currently, OTO supports only one tunnel per uplink interface on the Branch Gateway irrespective of the number of INET interfaces available on the VPNC. For example, when a VPNC has 1 INET interface (inet1) and a Branch Gateway has 2 uplinks (link1 and link2), tunnels are established such that Branch Gateway uplinks link1 and link2 have 1 tunnel each to VPNC inet1. When you add a second INET interface (inet2) on VPNC, the existing link2 tunnel on the Branch Gateway to INET1 of VPNC is cleared and a new tunnel is established with VPNC inet2.
  • You can add multiple WAN uplinks (up to 4 uplinks) in any combination of INET and MPLS Multiprotocol Label Switching. The MPLS protocol speeds up and shapes network traffic flows. .
  • VPNC WAN uplink health check is not considered in any decision making process, such as, traffic flow path selection.
  • You cannot configure multiple WAN uplinks for VGWs and non-orchestrated tunnels.
  • Tunnel negotiation is triggered for all tunnels when WAN configuration is added or deleted.
  • Tunnel renegotiation is not triggered when a WAN uplink is down, or when a tunnel is down.

In Basic mode, the WAN uplinks and ports can be configured at the device level for VPNC.

To configure the WAN interface, complete the following steps:

  1. In the Aruba Central app, set the filter to Global or a group containing at least one VPNC.
  2. Under Manage, click Devices > Gateways.

    A list of gateways is displayed in the List view.

  3. Click a VPNC under Device Name.

    The device configuration page is displayed.

  4. Ensure you are in the Basic Mode.
  5. Click WAN > WAN Details.
  6. To add a WAN port, click the + icon in the Uplinks table.

    The New Uplink pane is displayed.

  7. Enter a name for the WAN port in the Uplink field.
  8. Select the Interface VLAN ID from the drop-down list.
  9. Select the type of WAN uplink from the WAN type drop-down list. For example, Internet or MPLS.
    • The selection of Internet or MPLS determines the type of IP address used:
      • Select Internet to use a Public IP address.
      • Select MPLS to use a Private IP address.
  10. Click Save Settings.

The following animation shows you how to configure WAN Uplinks and Ports for WAN Interface for Branch Gateway or VPNC.