• Cisco NC55-18D12TH-SB line card with 18x400GE ports for NCS 5500
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Cisco

Cisco NC55-18D12TH-SB | Line card | 18x400GE or 30x200GE | QSFP-DD | up to 7.2 Tbps | for NCS 5500

NC55-18D12TH-SB

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Description

High-density 400G line card for NCS 5500 platforms, offering flexible configurations of up to 18x400GE or 30x200GE using QSFP-DD optics and supported breakouts. Designed for scalable core/aggregation fabrics requiring massive throughput and port flexibility.

Features

- Flexible 400G/200G port profiles on QSFP-DD
- High-capacity forwarding for large-scale networks
- Breakout support to maximize port utilization
- Designed for scalable core and aggregation architectures

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

Technical Specifications

- Port density: Up to 18x400GE or 30x200GE (model-dependent configuration)
- Optics form factor: QSFP-DD
- Throughput: Up to ~7.2 Tbps aggregate
- Breakouts: Supported where applicable (e.g., 2x200G or 4x100G per QSFP-DD, platform/optic-dependent)
- Use cases: Core, aggregation, high-capacity edge
- Compatibility: NCS 5500 Series chassis supporting 400G line cards
- OIR: Online insertion/removal when supported by the chassis and software

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