N9K-X9732C-EX – 32x100G QSFP28 – Breakout Capable – Nexus 9500 Line Card

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N9K-X9732C-EX Description

The N9K-X9732C-EX is a Cisco Nexus 9500 Series cloud-scale line card for 100G aggregation and spine roles in Nexus 9504, Nexus 9508 and Nexus 9516 chassis. The card has 32 100G QSFP28 ports, 6.4 Tbps of performance and a 160 MB packet buffer, and it runs in NX-OS mode or as an ACI spine. Full bandwidth needs four fabric modules, and the card supports neither MACSec nor N+1 fabric module redundancy.

Quick Specs

Parameter

Specification

Product ID

N9K-X9732C-EX

Product type

100G line card

Supported chassis

Nexus 9504, Nexus 9508, Nexus 9516

Ports

32 x 100G QSFP28

Port form factor

QSFP28

Breakout support

100G, 50G, 40G, 25G, 10G, 1G modes depending on optics and configuration

Operating modes

Cisco NX-OS and Cisco ACI spine

Switching capacity

6.4 Tbps

Forwarding rate

4.3 Bpps

Packet buffer

160 MB

Fabric modules required

4 for maximum bandwidth

Typical power consumption

430 W

Maximum power consumption

720 W

Product Performance

100G QSFP28 Density
Line Card Performance
Packet Buffer

Key Features

Dense 100G QSFP28 Faceplate

The card carries 32 100G QSFP28 ports, so a modular chassis gains 100G capacity without adding a fixed-configuration switch.

Per-Port Breakout Modes

Each port runs 1x100G, 2x50G, 1x40G, 4x25G, 4x10G or 1×1/10G. Breakout modes need matching cables and software support.

ACI Spine Or NX-OS Operation

The card works in NX-OS mode and as an ACI spine. In a Nexus 9516 the spine role runs only on N9K-C9516-FM-E2 fabric modules, because N9K-C9516-FM-E is limited to NX-OS.

Four Fabric Modules For Full Bandwidth

The card reaches its full 6.4 Tbps with four fabric modules in the chassis. Cards in one chassis share the same fabric module type.

Forwarding Scale And Buffer

The card supports up to 1 million IPv4 LPM routes, 1 million host entries, 512,000 MAC entries and 32,000 multicast routes, behind a 160 MB packet buffer.

Chassis Power Draw

The card draws 430 W typical and 720 W maximum. The chassis power plan sums the maximum draw of every module and divides by 3000 W to find the number of power supplies.

Application Scenarios

ACI Spine At 100G

A Nexus 9500 chassis acting as an ACI spine terminates 100G leaf uplinks on the 32 QSFP28 ports of the card. ACI spine mode depends on fabric modules that support it, which excludes N9K-C9516-FM-E in a Nexus 9516.

NX-OS Core And Aggregation

In an NX-OS data center, the card gives a Nexus 9500 core or aggregation chassis dense 100G toward leaf switches. With breakout cables, individual ports also drop to 4x25G or 4x10G for mixed-speed links.

Product Comparison

Parameter

N9K-X9732C-EX

N9K-X9732C-FX

N9K-X9736C-FX

N9K-X9736C-EX

Ports

32 x 100G QSFP28

32 x 100G QSFP28

36 x 100G QSFP28

36 x 100G QSFP28

Cisco ACI spine support

Yes

No

Yes

No

MACSec support

No

Yes

Yes

No

N+1 fabric module redundancy

No

Yes (5 fabric modules)

No

No

FM required for maximum bandwidth

4

4

5

4

Performance

6.4 Tbps

6.4 Tbps

7.2 Tbps

6.4 Tbps

N9K-X9732C-EX is the 32-port 100G line card that can serve as an ACI spine, while N9K-X9732C-FX has the same 32 QSFP28 ports and 6.4 Tbps but supports NX-OS only, so the two split on ACI spine against MACSec. A site that needs MACSec or N+1 fabric module redundancy on 32 ports orders N9K-X9732C-FX, with five fabric modules for N+1. N9K-X9736C-FX adds four ports and 7.2 Tbps with both ACI spine and MACSec, but needs five fabric modules for full bandwidth against four for N9K-X9732C-EX. N9K-X9736C-EX suits NX-OS fabrics that want 36 ports without ACI spine or MACSec. In a Nexus 9516, ACI spine on N9K-X9732C-EX needs N9K-C9516-FM-E2, because N9K-C9516-FM-E runs it in NX-OS only.

Ordering Checklist

  • Host chassis: Install the card in a Nexus 9504, Nexus 9508 or Nexus 9516; the hardware guides for all three list N9K-X9732C-EX as a supported line card. It installs only in these Nexus 9500 chassis and is not a standalone switch.
  • Fabric modules: Order four fabric modules for maximum bandwidth. For ACI spine use N9K-C9504-FM-E, N9K-C9508-FM-E, N9K-C9508-FM-E2 or N9K-C9516-FM-E2, or N9K-C9504-FM-G or N9K-C9508-FM-G; N9K-C9516-FM-E supports NX-OS only. A Nexus 9516 built on N9K-C9516-FM-E cannot run this line card as an ACI spine.

Specifications

Parameter Specification Parameter Specification
Product ID N9K-X9732C-EX Product type Cloud-scale 100G line card
Line card description Cisco Nexus 9500 32p 100G QSFP cloud-scale line card Supported chassis Nexus 9504, Nexus 9508, Nexus 9516
Ports 32 x 100G QSFP28 Port form factor QSFP28
Breakout capability 1x100G, 2x50G, 1x40G, 4x25G, 4x10G, 1×1/10G Cisco NX-OS support Yes
Cisco ACI spine support Yes MACSec support No
N+1 fabric module redundancy No FM required for maximum bandwidth 4
Performance 6.4 Tbps Forwarding rate 4.3 bpps
Packet buffer 160 MB Weight 5.5 kg (12.13 lb)
Typical power consumption 430 W Maximum power consumption 720 W
MTBF 481,470 hours Hot swappable Yes
Airflow Port-side intake FM-G compatibility C9504-FM-G and C9508-FM-G support Cisco ACI spine and Cisco NX-OS
FM-E compatibility C9504-FM-E and C9508-FM-E support Cisco ACI spine and Cisco NX-OS C9516-FM-E compatibility Cisco NX-OS
FM-E2 compatibility C9508-FM-E2 and C9516-FM-E2 support Cisco ACI spine and Cisco NX-OS Ordering part number N9K-X9732C-EX (=)

Quality Certifications

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    Raj Hughes
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    Quality felt premium. No corners cut anywhere in the product or packaging.

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    Reached out with a question before buying. Got a detailed answer the same day.

    Larry Porter
    Posted on 10/12/2025
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    Confidence in authenticity matters when you’re spending real money. Layer23 delivers.

Questions & Answers

  • Which Nexus 9500 chassis accept N9K-X9732C-EX?

    N9K-X9732C-EX installs in Nexus 9504, Nexus 9508 and Nexus 9516 chassis, and the hardware guides for all three list the card. The card is not a standalone switch, and full 6.4 Tbps bandwidth needs four fabric modules in the chassis.
  • Which IOFPGA EPLD version does N9K-X9732C-EX carry on -E fabric modules in releases 10.3(6) to 10.4(5)?

    Per the Nexus 9000 EPLD release notes, N9K-X9732C-EX with -E fabric modules carries IOFPGA version 0x13 (0.019) in every release from 10.3(6) through 10.4(5). The N9K-X9732C-EXM variant is listed at 0x11 (0.017).
  • How heavy is an N9K-X9732C-EX line card when it is lifted into a Nexus 9500 slot?

    An N9K-X9732C-EX weighs 12.13 lb (5.5 kg), per the Nexus 9504 hardware installation guide system specifications. One person can seat it, but support the card from underneath while sliding it into the slot.
  • What MTBF and swap behaviour does N9K-X9732C-EX have?

    N9K-X9732C-EX is listed with an MTBF of 481,470 hours. The card is hot swappable and draws air port-side intake, so a failed card can be exchanged in a running chassis.
  • Can N9K-X9732C-EX run as an ACI spine in a Nexus 9516?

    Yes, but only on N9K-C9516-FM-E2 fabric modules. A Nexus 9516 built on N9K-C9516-FM-E runs N9K-X9732C-EX in NX-OS mode only, because that fabric module does not support ACI spine operation in the chassis.

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DataSheet Downloads

  • N9K-X9732C-EX Datasheet