Dedicated offload CPU for BFD

vSRX 3.0 includes a dedicated offload CPU feature for Bidirectional Forwarding Detection (BFD). This feature reallocates a flow thread and employs the Data Plane Development Kit (DPDK) flow filters on the network interface card (NIC) to shift high-priority packets (BGP, RIPv2, OSPF, PIM, Multicast, IGMP, Single-Hop BFD, and Multihop BFD) onto the dedicated flow thread.

Without a dedicated offload CPU, in cases of oversubscription, where either memory or CPU thresholds are reached on the Packet Forwarding Engine and packets are being dropped, the BFD packets might also be dropped, leading to BFD flapping.

To enable the dedicated offload CPU, run the set security forwarding-options dedicated-offload-cpu command.

To view the current dedicated offload CPU status, use the show security forward-options dedicated-offload-cpu command.