BFD Monitoring of RTEPs

ExtremeXOS supports BFD monitoring of remote VTEPs (RTEPs). To verify the datapath used by the overlay traffic, BFD packets are VXLAN encapsulated between the VTEPs. Consequently, support for multi-hop BFD in the underlay network is not required.

In the context of the hardware_vtep schema, BFD monitoring of RTEPs can be managed using the Tunnel table. ExtremeXOS publishes a new row in this table whenever it learns of a new VTEP (Physical_Locator) from the controller. Unless requested by the OVSDB controller, a BFD session to the RTEP is not initiated. For more information, see the Hardware VTEP Schema, Version 1.3.