MX Series Virtual Chassis configuration supports the following Layer 2 Control Protocol (L2CP) features, known collectively as xSTP:
Spanning-tree protocols resolve the forwarding loops in a Layer 2 network, thereby creating a loop-free tree topology. Configuring spanning-tree protocols provides link redundancy in case of link failures, and prevents undesirable loops in the data path.
To configure and manage STP, RSTP, MSTP, or VSTP in a Virtual Chassis, you use the same procedures for a member router in an MX Series Virtual Chassis as you do for a standalone MX Series router.
| Product / Application | Software | Introduced Release |
|---|---|---|
| MX240 | Junos OS | 14.1R1 |
| MX480 | Junos OS | 14.1R1 |
| MX960 | Junos OS | 14.1R1 |
| MX2010 | Junos OS | 15.1R1 |
| MX2020 | Junos OS | 15.1R1 |
| MX10003 | Junos OS | 18.3R1 |