Cisco N3K-C3432D-S Nexus 3432D-S 32-Port 400G QSFP-DD Switch
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N3K-C3432D-S Overview
Correct 400G identity
N3K-C3432D-S is a Cisco Nexus 3432D-S with 32 fixed 400G QSFP-DD ports. It is not a 32-port 100G-only switch. Cisco documents backward compatibility of the QSFP-DD cages with QSFP56, QSFP28 and QSFP+ form factors, subject to supported optics and software.
Switching and hardware
Cisco specifies 25.6 Tbps switching capacity. The chassis uses dual-redundant power supplies and six hot-swappable fans arranged as 5+1 redundancy. It also provides two front 100/1000-Mbps SFP ports, one RS-232 console port, one RJ-45 and one SFP management port, and one USB port.
Optics and licensing boundary
The base chassis PID does not include or guarantee 400G optics, breakout assemblies, airflow direction or advanced feature licenses. Confirm the installed transceivers, minimum NX-OS release, power supplies, fan airflow and the required Essential license before procurement.
Lifecycle
Cisco lists September 1, 2025 as end of sale and August 31, 2030 as last date of support. The lifecycle notice points to Nexus 9300 and Cisco 8101-32FH-O migration options rather than declaring a like-for-like automatic replacement.
Official sources: Cisco Nexus 3432D-S datasheet and Cisco lifecycle notice.
N3K-C3432D-S Specification
| Exact model / SKU | N3K-C3432D-S |
| Exact PID | N3K-C3432D-S |
| Platform | Cisco Nexus 3432D-S |
| Primary ports | 32 x 400G QSFP-DD |
| Backward-compatible cages | QSFP56, QSFP28 and QSFP+ |
| Switching capacity | 25.6 Tbps |
| Power supplies | Dual redundant |
| Fans | 6 hot-swappable, 5+1 redundant |
| Front auxiliary ports | 2 x 100/1000 Mbps SFP |
| Management | 1 RJ-45, 1 SFP, 1 console and 1 USB |
| End of sale | September 1, 2025 |
| Last date of support | August 31, 2030 |
| Migration directions | Nexus 9300 or Cisco 8101-32FH-O |
| Source match | Cisco datasheet and lifecycle notice identify N3K-C3432D-S as a 32-port 400G QSFP-DD switch and provide exact chassis and lifecycle facts. |
| Official manufacturer reference | Cisco Nexus 3432D-S Data Sheet |
N3K-C3432D-S Warranty
 | Product Quotation |  | Condition and Packaging |
 | Technical Support Enquiry |  | Returns and Replacement |
 | Shipping Arrangements |  | Warranty Terms |
N3K-C3432D-S FAQ
What is N3K-C3432D-S?
Cisco N3K-C3432D-S Nexus 3432D-S 32-Port 400G QSFP-DD Switch is a CISCO Nexus 3000 Series Switches product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
What interfaces and ports does N3K-C3432D-S provide?
For N3K-C3432D-S, the manufacturer specification lists primary ports as 32 x 400G QSFP-DD.
What is the switching capacity of N3K-C3432D-S?
For N3K-C3432D-S, the manufacturer specification lists switching capacity as 25.6 Tbps.
What are the power requirements for N3K-C3432D-S?
For N3K-C3432D-S, the manufacturer specification lists power supplies as Dual redundant.
Is N3K-C3432D-S available from YYST Global?
Contact YYST Global to confirm availability for N3K-C3432D-S, the required quantity, exact configuration, delivery destination and current lead time before ordering. A product listing does not confirm current inventory.
Related products
Related N3K-C3432D-S
N3K-C3408-S - Cisco Nexus 3000 Series switch with 32 ports of QSFP-DD
N3K-C3408-S is a 4RU eight-slot Nexus chassis using 100G or 400G expansion modules. Verify the populated bill of materials; headline capacity does not imply included modules.
N3K-C34180YC - Cisco Nexus 3000 Series
N3K-C34180YC has 48 10/25G SFP interfaces and six 40/100G QSFP interfaces, with breakout options. Cisco support ended October 31, 2025; verify software and migration needs.
N3K-C3016Q-40GE - Cisco Nexus 3000 Series Switch
N3K-C3016Q-40GE is the 1RU Nexus 3016 with 16 QSFP+ ports. Its ordering row excludes power supplies and fan tray; Cisco support ended October 31, 2020.
N3K-C31108PC-V - Cisco Nexus 3000 Series
N3K-C31108PC-V provides 48 1/10G SFP+ access ports and six QSFP28 uplinks. Review the right-most uplink mode-change reboot requirement, optics and support entitlement.
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N3K-C3172PQ-XL - Cisco Nexus 3000 Series Switch
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