What is the BFD default detecting interval?

52

1000 milliseconds.

Other related questions:
What is the function of the default multicast address of BFD on an AR
When BFD is used to detect the physical status of a link, you may not specify the remote IP address. In some situations, the remote end such as the Eth-Trunk member link is not assigned an IP address. A BFD session needs to be bound to a multicast IP address and the AR needs to send BFD control packets to the multicast IP address. In the following situations, you must change the default multicast IP address: - On the network, other protocols use the multicast IP address. - Multiple BFD sessions exist on the BFD detection path. For example, when Layer 3 interfaces are connected through Layer 2 switching devices that support BFD, you must configure different default multicast IP addresses for the devices where different BFD sessions are established. You can run the default-ip-address ip-address command to configure the default multicast IP address for the BFD session. [Huawei] bfd [Huawei-bfd] default-ip-address 224.0.0.150 //Set the default multicast address bound to the BFD session to 224.0.0.150.

What is BFD default detection multiplier?
3 times.

What is BFD
Bidirectional Forwarding Detection (BFD) quickly detects communications faults between systems and reports corresponding faults to the upper-layer protocol.

What features can BFD detect
BFD can detect faults in static routes, RIP, OSPF, IS-IS, BGP, VRRP, PIM, LDP LSP, and MPLS TE. For CE12800 series switches, BFD can detect faults in static routes, RIP, OSPF, IS-IS, BGP, VRRP, PIM, and MPLS TE. For CE7800, CE6800, and CE5800 series switches, BFD can detect faults in static routes, RIP, OSPF, IS-IS, BGP, VRRP, PIM, and LDP LSP. BFD for LDP LSP is supported only by the CE7850EI, CE6850HI, CE6850U-HI, and CE6851HI.

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