Follow the below procedure to add IPsec or GRE Tunnel:
Step 1: Click Add Logical Interface on the Interfaces page. A drop-down list
lists the logical interfaces that can be configured. Select Tunnel from the list.
Tunnel Configuration page is displayed as shown below.
Figure 29: Interfaces - Tunnel Configuration
Step 2: Configure a tunnel interface.
•
Enter the number for the tunnel interface in the Tunnel Number field. This should
be in the range 0-14487
•
Select IPsec/GRE radio button to configure the mode on the tunnel interface. By
default, tunnel is configured in the GRE mode.
•
Enter the IP address and the subnet mask of the tunnel interface in the IP
Address and Mask field.
•
Associate a VRF to the tunnel. Select the VRF to be associated from the VRF list.
The selected VRF is displayed in the VRF Forwarding field.
Note:
By default, all the interfaces are associated with the Default VRF.
•
Enter the description for the tunnel in the Description field.
•
Enter the Maximum Packet size or Maximum Transmission Unit (MTU) size in the
MTU field. The default MTU is 1476.
Step 3: Click Apply to configure the tunnel interface or click Cancel to cancel the
operation.
Step 4: The tunnel interface thus configured is displayed in the Interfaces
page.
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