: Upgrade both REs to the exact same Junos release (including the same build number). Use:
The Juniper REN-2, or Routing Engine Node, is a specialized hardware component found in many of Juniper’s high-end routing and switching platforms, such as the PTX and MX series. The Routing Engine (RE) is the "brain" of the router, responsible for maintaining routing tables, managing routing protocols, and controlling the overall operation of the device. juniper ren 2 link
| Platform | REN 2 Speed | Typical Synchronization Load | Max Load During RPD Restart | |----------|-------------|------------------------------|-----------------------------| | MX240/480 | 10 Gbps | <100 Mbps | ~3 Gbps | | MX2020 | 2x10 Gbps (LAG internally) | ~500 Mbps | 8 Gbps | | PTX5000 | 25 Gbps | 200 Mbps | 12 Gbps | | PTX10008 | 2x25 Gbps | 300 Mbps | 15 Gbps | : Upgrade both REs to the exact same
On modular systems, this shows the fabric planes. A failed "REN 2" might appear as Plane 2: Link status: Down . | Platform | REN 2 Speed | Typical