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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Why Is the Association Between a BFD Session and an Interface Applicable to Only Multicast BFD Sessions Currently?

Why Is the Association Between a BFD Session and an Interface Applicable to Only Multicast BFD Sessions Currently?

The multicast BFD session uses multicast packets and is not affected by the protocol status on an interface. When the BFD session goes Down and the protocol status on the interface changes to BFD Status Down, multicast BFD packets can still be sent. After the link recovers, the multicast BFD session can become Up through negotiation. As a result, the interface is unlocked and becomes Up. Unicast packets, however, cannot be sent or received after the protocol status on the interface goes Down, which causes deadlock.

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Updated: 2019-08-21

Document ID: EDOC1000141941

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