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NE40E V800R010C10SPC500 Feature Description - Network Reliability 01

This is NE40E V800R010C10SPC500 Feature Description - Network Reliability
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BFD Dampening

BFD Dampening

If an IGP or MPLS link frequently flaps and the flapping interval is greater than the IGP or MPLS recovery time, BFD detects the link flapping and notifies an upper-layer protocol of the event. As a result, the upper-layer protocol frequently flaps. BFD dampening prevents link flapping detected by BFD from causing the frequent flapping of the upper-layer protocol.

BFD dampening enables the BFD session's next negotiation to be delayed if the number of times that a BFD session flaps reaches a threshold. However, IGP and MPLS negotiation is not affected. Specifically, if a BFD session that is always flapping goes Down, its next negotiation is delayed, reducing the number of times that the BFD session flaps.

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Updated: 2019-01-03

Document ID: EDOC1100055045

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