Cisco NCS 5000 Series
The Cisco NCS 5000 Series (such as the NCS 5001, 5002, and 5011) is a dense, access and aggregation routing platform utilizing the Broadcom Qumran-MX ASIC architecture.
Buffer Architecture
| Field | Value |
|---|---|
| Total Buffer | 16 MB per NPU |
| Buffer Model | Fully shared on-chip packet buffer |
| VOQ Support | No deep external buffers |
| Target Role | Metro aggregation, peered access |
| Forwarding ASIC | Broadcom Qumran-MX |
Unlike the deep-buffered NCS 540 or NCS 5500, the NCS 5000 relies purely on its 16 MB of on-chip packet buffering. It is optimized for high-density 10G/100G aggregation where prolonged microbursts are less of a concern.
Key Architectural Points
- On-chip only: Uses 16 MB of integrated packet buffer without external memory.
- Geared towards low-latency 10G/100G environments.
See the Broadcom Qumran Platform architecture page for broader details on the chipset family.