Create a Tunnel

You can configure transport tunnel termination and encapsulation for a device.

About this task

You can associate transport tunnel termination with an ingress group. You can apply an ACL or ingress policy based on the ingress group configuration (GRE and ERSPAN tunnel). For more information, see Create an Ingress Group.

For traffic that leaves an Extreme 9920 device, you can associate transport tunnel encapsulation with egress. For more information, see Create an Egress.

Procedure

  1. In the Navigation menu, select Configure.
  2. In the Devices panel, select the device for which you want to create a tunnel.
  3. Select the Configuration tab.
  4. In the Device Config menu, select Add Tunnel.
  5. In the Name field, enter a name for the tunnel.
  6. In the Type field, select Termination or Encapsulation.
  7. In the Tunnel Type field, select one of the following.
    The options vary by the type you selected in step 6.
    • GRE (Generic Routing Encapsulation). This type of tunnel encapsulates (or wraps) packets that use a certain protocol inside packets that use a different protocol.
    • ERSPAN (Encapsulated Remote Switched Port Analyzer): This type of tunnel mirrors traffic from source ports for delivery to destination ports on a different device.
  8. In the Source IP field, enter the IP address of the devices that sends the packets.
  9. In the Destination IP field, enter the IP address of the device that is to receive the packets.
  10. Complete the following fields.
    The fields vary by the type you selected in step 6.
    • Source MAC. The MAC address of the device that sends the packets.
    • Destination MAC. The MAC address of the device that is to receive the packets.
    • VLAN Tag. A numeric string that identifies which VLAN a packet belongs to.
    • VLAN PCP. The Priority Code Point, a 3-bit field in the VLAN header.
    • Egress. The egress to associate with the tunnel.
    • Source Prefix. The prefix of the IP address of the devices that sends the packets, in CIDR notation format.
    • Destination Prefix. The prefix of the IP address of the device that receives the packets, in CIDR notation format.
    • Ingress Groups. The ingress group to associate with the tunnel.
  11. Save (✔) your selections.
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