BFD & IP SLA Timer Calculator
BFD & IP SLA Timer Calculator
Calculate failure-detection time for BFD sessions and IP SLA probes. Compare sub-second vs second-scale failover options.
BFD Detection Time
Detection time = max(desired_min_tx, required_min_rx) × detect_mult
IP SLA Failover Timer
BFD vs IP SLA Comparison
Common BFD Timer Presets
| Profile | Min TX/RX (ms) | Multiplier | Detection Time | Use Case |
|---|---|---|---|---|
| Aggressive | 50 | 3 | 150 ms | Datacenter, same-subnet peers |
| Balanced | 300 | 3 | 900 ms | Most WAN links |
| Conservative | 500 | 3 | 1500 ms | High-latency WAN, satellite |
| Slow (no BFD) | N/A | 30–180 s | BGP hold-down timer fallback | |