Description

This article clarifies that Bidirectional Forwarding Detection (BFD) over MPLSoUDP Tunnels is not yet supported on devices running Junos OS.

Symptoms

In cases where BFD is configured over protocols such as iBGP for which the remote host is resolved over MPLSoUDP tunnels, BFD/iBGP may not come up properly and the sessions may experience continuous flaps.

Solution

BFD over MPLSoUDP tunnels is not yet supported on Junos OS.

To avoid issues as specified above, it is recommended that users remove BFD over the iBGP sessions that are resolved over dynamic tunnels such as MPLSoUDP.