BFD parameters are adjusted on the ingress node of a TE tunnel using either of the following modes:
Adjusting Global BFD Parameters when a large number of TE tunnels on the ingress node use the same BFD parameters
Adjusting BFD Parameters on an Interface when certain TE tunnels on the ingress node need to use BFD parameters different from global BFD parameters
Actual local sending interval = MAX { Configured local sending interval, Configured remote receiving interval }
Actual local receiving interval = MAX { Configured remote sending interval, Configured local receiving interval }
Actual local detection interval = Actual local receiving interval x Configured remote detection multiplier
On the egress node of the TE tunnel enabled with the capability of passively creating BFD sessions, the default values of the receiving interval, sending interval and detection multiplier cannot be adjusted. The default values of these three parameters are the minimum configurable values on the egress node. Therefore, the BFD detection interval on the ingress and that on the egress node of a CR-LSP are as follows:
Actual detection interval on the ingress = Configured receiving interval on the ingress node x 3
Actual detection interval on the egress = Configured sending interval on the ingress x Configured detection multiplier on the ingress node
Perform the following configurations on the ingress node of an MPLS TE tunnel.