This section provides an example for establishing single-hop BFD sessions on Eth-Trunk interfaces to monitor the directly connected link between the Eth-Trunk interfaces.
In CE dual-homing networking, after a static route on a CE is bound to a BFD session, the static route can detect link faults or refresh itself based on the BFD session status. This implementation ensures quick VPN traffic convergence.
Sub-interfaces for QinQ VLAN tag termination are configured to support BFD on a typical network. In this manner, user packets with double tags can be reliably and stably sent over the network.
Sub-interfaces for dot1q VLAN tag termination are configured to support BFD on a typical network. In this manner, user packets with one tag can be reliably and stably sent over the network.
This section provides an example for configuring a BFD for link-bundle session to monitor Layer 3 Eth-Trunk member links and rapidly detect link faults.
This section provides an example for configuring a BFD for link-bundle session to monitor Layer 3 Eth-Trunk member links and rapidly detect link faults in an IPv6 scenario.
This section provides an example for configuring the delay of a BFD session to go Up. This configuration prevents traffic loss because a routing protocol goes Up later than an interface.
This section provides an example for enabling BFD to modify the PST. After the configuration is complete, an upper-layer protocol switches traffic to a backup link if a link fault occurs.