Create Tunnel
                You can create tunnels on the encapsulation side and/or decapsulation side. To create a tunnel:
                
                    
                    
                    
                    
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                        1.  
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                        From the device view, go to Ports > Tunnels. | 
                    
                
                
                    
                    
                    
                    
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                        2. 
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                        Click New. The Tunnel configuration page appears. | 
                    
                
                
                    
                    
                    
                    
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                        3. 
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                        In the Alias and Comment fields, enter the name and description of the tunnel. | 
                    
                
                
                    
                    
                    
                    
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                        4. 
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                        From the Type drop-down list, select one of the following options: | 
                    
                
                
                    
                    
                    
                    
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                        Circuit-ID—to create Circuit-ID tunnels. | 
                    
                
                
                    
                    
                    
                    
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                        VXLAN—to create VXLAN tunnels. | 
                    
                
                
                    
                    
                    
                    
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                        L2GRE—to create L2GRE tunnels. | 
                    
                
                
                    
                    
                    
                    
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                        5. 
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                        Select one of the following modes: | 
                    
                
                
                    
                    
                    
                    
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                        Encapsulation—Select this mode to send the encapsulated traffic to the destination node that resides in another cluster. | 
                    
                
                
                    
                    
                    
                    
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                        Decapsulation—Select this mode to decapsulate the traffic received from the source node that resides in another cluster. | 
                    
                
                
                    
                    
                    
                    
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                        6. 
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                        In the Circuit-ID field, enter the circuit ID used to encapsulate or decapsulate the traffic. You can enter multiple circuit-IDs when you create a circuit-ID tunnel for decapsulation. | 
                    
                
                Note:  This field is available only when you select Circuit-ID in the Type drop-down list.
                
                    
                    
                    
                    
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                        7. 
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                        In the Destination IP Address field, enter the IPv4 address of the destination node. | 
                    
                
                Note:  This field is available only when you select VXLAN or L2GRE in the Type field and the Mode as Encapsulation.
                
                    
                    
                    
                    
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                        8. 
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                        In the L4 Source Port field, enter the layer 4 source port number. | 
                    
                
                Note:  This field is available only when you select VXLAN in the Type field and the Mode as Encapsulation.
                
                    
                    
                    
                    
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                        9. 
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                        From the Attached entity drop-down list, select the required entity based on the tunnel type you are creating: | 
                    
                
                
                    
                    
                    
                    
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                        If you are creating a Circuit-ID tunnel, this field is available only when you select the Mode as Decapsulation. Ensure that you attach the required circuit ports or circuit GigaStreams. | 
                    
                
                
                    
                    
                    
                    
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                        If you are creating a VXLAN tunnel or a L2GRE tunnel, ensure that you select the IP interface to which you have attached the circuit port. | 
                    
                
                
                The newly added tunnel appears in the Tunnels listing page.