• Cisco NC55-36X100G-S-DC silver server rack with black and gray cables
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Cisco

Cisco NC55-36X100G-S-DC | 36x 100GbE QSFP28 | MACsec | Datacenter (deep buffer) | Base mode | 3.6 Tbps

NC55-36X100G-S-DC

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Description

Datacenter-optimized 36-port 100GbE QSFP28 line card featuring hardware MACsec and a deep-buffer profile to absorb microbursts and incast common in leaf-spine fabrics. Delivers 3.6 Tbps of line-rate performance with IOS XR, model-driven telemetry, advanced QoS, and EVPN/SR/MPLS for modern DC and DCI designs. Flexible porting supports 100G, 40G, and 4x25G breakout on supported optics.

Features

- Deep-buffer profile tailored for data center traffic patterns
- 36 x 100G with MACsec for secure, high-density aggregation
- Flexible speed options: 100G, 40G, and 4x25G breakout
- Comprehensive IOS XR capabilities including EVPN and Segment Routing
- Model-driven telemetry for real-time visibility and automation

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

FAQs

Technical Specifications

- Port density: 36 x 100G
- Form factor: QSFP28 (supports QSFP+ for 40G)
- Speed/breakout: 100G, 40G, and 4x25G breakout (where optics/cables support)
- Encryption: Hardware MACsec (IEEE 802.1AE)
- Throughput: 3.6 Tbps line-rate
- Buffering: Datacenter deep-buffer profile for bursty traffic
- OS: IOS XR (feature set per release)
- Features: IPv4/IPv6, MPLS, Segment Routing, EVPN
- Telemetry: Model-driven/streaming telemetry
- QoS: Hierarchical QoS with granular queuing and policing
- Chassis: NCS 5500 modular chassis (e.g., NCS 5508, NCS 5516)
- Optics: QSFP28 100G optics/DAC/AOC; QSFP+ for 40G

FAQs

Q: What distinguishes the Datacenter variant?
A: It uses a deep-buffer profile to better handle microbursts and incast, improving performance in leaf-spine and DCI use cases.

Q: Does it support 40G and 25G breakout?
A: Yes. 40G operation is supported with QSFP+ optics, and 4x25G breakout is supported with applicable QSFP28 optics or DAC/AOC.

Q: Is MACsec supported on all ports?
A: Yes, hardware MACsec is available per port, subject to software and licensing.

Q: Is this line card only for data centers?
A: No. While optimized for DC fabrics, it can be deployed in service provider networks where deeper buffers are beneficial.

Q: Are optics included?
A: No. Transceivers and cables are purchased separately.

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