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The Cisco NCS-57B1-6D24-SYS is a fixed 1RU router from the Cisco Network Convergence System (NCS) 5700 Series. Specifically, it combines 4.8 Tbps of 400GE/100GE forwarding capacity with 30 QSFP-DD ports. As a result, it serves aggregation, distributed core, and peering roles in a compact, power-efficient package.

6x 400G and 24x 100G QSFP-DD Ports

In addition, the router provides six 400G QSFP-DD ports and twenty-four 100G QSFP-DD ports. Consequently, operators can mix 400G core uplinks with dense 100G service ports in a single rack unit. Moreover, every port accepts QSFP28 optics, and an optional QSA adapter adds SFP+ support.

400G ZR/ZR+ for Routed Optical Networking

Furthermore, the six 400G ports and the top row of twelve 100G ports support coherent ZR and ZR+ optics. Therefore, operators can connect routers directly over DWDM links without separate transponders, which Cisco calls Routed Optical Networking. Likewise, the 400G ports support breakout, although breakout disables the lower row of 100G ports.

Security, Timing, and Deep Buffers

Also, the NCS-57B1-6D24-SYS delivers full line-rate MACsec encryption, Class C IEEE 1588 PTP, and Synchronous Ethernet. For this reason, it suits mobile transport and 5G networks that need precise timing. Finally, deep packet buffering helps absorb traffic bursts at aggregation and peering points.

Licensing and Model Variants

The -SYS suffix indicates Cisco’s Flexible Consumption Model (FCM), which uses Smart Licensing. By comparison, the NCS-57B1-6D24H-S uses perpetual licensing, while the NCS-57B1-5DSE-SYS (SE variant) offers five 400G ports with higher scale. For this reason, confirm your licensing plan before deployment.

Key Features

• First, it provides 6x 400G and 24x 100G QSFP-DD ports in 1RU.
• Second, it delivers 4.8 Tbps of forwarding capacity.
• Additionally, it supports 400G ZR/ZR+ coherent optics.
• Furthermore, it offers full line-rate MACsec encryption.
• Moreover, it supports Class C PTP and SyncE for 5G timing.
• Finally, it runs 64-bit Cisco IOS XR with model-driven telemetry.

Why Lease from Telecom Leasing?

• First, you deploy 400G routing without a large capital outlay.
• Second, we test every unit so it’s ready to deploy.
• In addition, flexible terms cover spares, upgrades, and project builds.
• Finally, you get fast quotes and quick shipping.

Best of all, Telecom Leasing offers the NCS-57B1-6D24-SYS for lease or purchase, so you can build 400G aggregation at a fraction of new cost.

Frequently Asked Questions

What is the Cisco NCS-57B1-6D24-SYS?

In short, it’s a 1RU Cisco NCS 5700 Series router with 6x 400G and 24x 100G QSFP-DD ports and 4.8 Tbps of forwarding capacity.

Does the NCS-57B1-6D24-SYS support 400G ZR and ZR+ optics?

Yes. In fact, all six 400G ports and the top row of twelve 100G ports support ZR and ZR+ coherent optics.

What’s the difference between the NCS-57B1-6D24-SYS and NCS-57B1-5DSE-SYS?

The 6D24 offers six 400G ports. In contrast, the 5DSE (SE variant) offers five 400G ports with higher route and service scale.