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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Configure BFD in VLT Domain

Dell EMC Networking OS supports Bidirectional Forwarding Detection (BFD) to detect communication failures on an interface that is a part of a VLT link aggregation group (LAG).

In VLT domain, BFD provides high availability path when there are communication failures in any one of the VLT LAG links. The VLT nodes and top of rack (ToR) use the VLT LAG links to carry the BFD packets. When any one of the VLT LAG links connected to the ToR is down, the BFD packets reach the VLT primary or secondary using the VLTi (ICL) link.


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