In the network shown in the figure, R1 and R2 are configured with single-hop BFD detection. The network engineer found that the BFD session was Down, so he queried the configuration related to R1…

In the network shown in the figure, R1 and R2 are configured with single-hop BFD detection. The network engineer found that the BFD session was Down, so he queried the configuration related to R1 and R2 BD. The configuration information has been marked in the figure. According to the configuration information, the reason for the BFD session Down is that the time parameters configured on R1 and R2 do not match.