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Routing protocols use Bidirectional Forwarding Detection BFD for fast liveness detection of their neighbors. With nonstop routing enabled, BFD session state is saved on both the primary Routing Engine and the backup Routing Engine.
| Product / Application | Software | Introduced Release |
|---|---|---|
| EX9200 | Junos OS | 12.3R2 |
| EX9251 | Junos OS | 18.1R1 |
| EX9253 | Junos OS | 18.2R1 |
| MX5 | Junos OS | 11.2R4 |
| MX10 | Junos OS | 11.2R4 |
| MX40 | Junos OS | 11.2R4 |
| MX80 | Junos OS | 10.2R1 |
| MX104 | Junos OS | 13.2R2 |
| MX240 | Junos OS | 9.0R1 |
| MX301 | Junos OS | 25.4R1 |
| MX304 | Junos OS | 22.2R3 |
| MX480 | Junos OS | 8.5R1 |
| MX960 | Junos OS | 8.5R1 |
| MX2008 | Junos OS | 15.1F7 |
| MX2010 | Junos OS | 12.3R2 |
| MX2020 | Junos OS | 12.3R1 |
| MX10003 | Junos OS | 17.3R1 |
| MX10004 | Junos OS | 22.3R1 |
| MX10008 | Junos OS | 18.2R1 |
| MX10016 | Junos OS | 19.2R1 |
| Next Generation Port Extender | Junos OS | 25.4R1 |