Which aggregation routers are known for secure management features and service provider scale?

Aggregation routers known for secure management features and service provider scale are typically carrier-grade platforms from major networking vendors. Common examples include:

• Cisco ASR Series (for example, ASR 9000 / ASR 1000)
• Juniper MX Series
• Nokia 7750 SR Series
• Huawei NetEngine / NE Series
• Arista 7500R / 7800R Series in large-scale aggregation roles

If you want, I can also narrow this down by:

• best security features
• largest scale / throughput
• most common in service provider networks
• enterprise vs carrier aggregation