Types of InterfacesΒΆ

Regular Interfaces:
 Typically these are hardware interfaces on the host, or virtualized by the hypervisor in a virtual machine environment. These are made available to TNSR through VPP, as described in Setup Interfaces.
VLAN Subinterfaces:
 VLAN interfaces are configured on top of regular interfaces. They send and receive traffic tagged with 802.1q VLAN identifiers, allowing multiple discrete networks to be used when connected to a managed switch performing VLAN trunking or tagging.
memif:Shared memory packet interfaces (memif) are virtual interfaces which connect between TNSR and other applications on the same host.
tap:Virtual network TAP interfaces which are available for use by host applications.
ipsec:Interfaces created and used by IPsec tunnels.
Loopback:Local loopback interfaces used for a variety of reasons, including management and routing so that the address on the interface is always available, no matter the status of a physical interface.
GRE:Generic Routing Encapsulation, an unencrypted tunneling interface which can be used to route traffic to remote hosts over a virtual point-to-point interface connection.
SPAN:Switch Port Analyzer, copies packets from one interface to another for traffic analysis.
Bond:Bonded interfaces, aggregate links to switches or other devices employing a load balancing or failover protocol such as LACP.
Bridge:Bridges connect interfaces together bidirectionally, linking the networks on bridge members together into a single bridge domain. The net effect is similar to the members being connected to the same layer 2 or switch.
VXLAN Interfaces:
 Virtual Extensible LAN (VXLAN) is a similar concept to VLANs, but it encapsulates Layer 2 traffic in UDP, which can be transported across other IP networks. This enables L2 connectivity between physically separated networks in a scalable fashion.