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NE40E V800R010C10SPC500 Feature Description - Network Reliability 01

This is NE40E V800R010C10SPC500 Feature Description - Network Reliability
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When Bidirectional Forwarding Detection (BFD) detects a fault, it changes the interface status in the port state table (PST) to trigger a fast reroute (FRR) switchover. BFD for PST applies only to single-hop scenarios when BFD sessions are bound to outbound interfaces.

BFD for PST is widely used in FRR applications. If BFD for PST is enabled for a BFD session bound to an outbound interface, the BFD session is associated with the PST on the outbound interface. After BFD detects that a link is Down, it sets the bit for the PST to Down to immediately trigger an FRR switchover.

Updated: 2019-01-03

Document ID: EDOC1100055045

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