Network Interfaces used in Cisco Viptela SDWAN

Today we are going to discuss about the basics in Cisco Viptela SDWAN network interfaces. Here in this article we will discuss about how many types of network interfaces we are using in Cisco Viptela SDWAN interfaces.

In the Viptela overlay network design, interfaces are associated with VPNs. The interfaces that participate in a VPN are configured and enabled in that VPN. Each interface can be present only in a single VPN.

Fig 1.1- Cisco Viptela SDWAN VPNs

Management VPN: Management VPN is VPN 512 is used for out-of-band management traffic. We can configure the management VPN on all Viptela devices.

For all Viptela devices, you can configure transport interfaces to run either IPv4 or IPv6, or you can configure them to run both, for a dual-stack implementation.

Transport VPN: Transport VPN is VPN 0. All interfaces activated in this VPN connect to a WAN network such as the MPLS, VPLS, Internet as so on and these interfaces carry overlay network control traffic. The interfaces in VPN 0 are referred to as transport side interfaces. You can configure transport VPNs on all Viptela devices.

Service VPNs: Service VPNs are all VPNs from VPN 1 to VPN 65535 except for VPN 0 and VPN 512. You can configure service-side VPNs only on vEdge routers. All service-side interfaces activated in these VPNs connect to a local or branch network that is generally located at the same site as the vEdge router. These interfaces carry data traffic throughout the overlay network.

We will discuss all these network type VPNs in detail in our next article and the configurations required for these VPNs.