N9K-X9732C-FX – 32x100G QSFP28 – NX-OS MACSec – N+1 Fabric Redundancy
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N9K-X9732C-FX Description
N9K-X9732C-FX is a Cisco Nexus 9500 Cloud Scale 32-port 100G QSFP28 line card for NX-OS modular chassis aggregation where MACSec and fabric module redundancy are part of the hardware selection.
Compared with N9K-X9732C-EX, this SKU keeps the same 32-port 100G QSFP28 density but changes the buying decision: N9K-X9732C-FX is listed for Cisco NX-OS, not ACI spine, and adds MACSec plus N+1 fabric module redundancy. It is the order path for teams that need the 32-port FX feature set instead of the EX ACI-spine role.
Quote planning should verify the Nexus 9504, Nexus 9508, or Nexus 9516 chassis, the installed fabric module family, the need for four fabrics versus a fifth redundant fabric, optics and breakout software support, and whether the design is truly NX-OS rather than an ACI-spine bill of materials.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
N9K-X9732C-FX |
|
Product family |
Cisco Nexus 9500 Series |
|
Product type |
Cloud-scale 100G line card |
|
Supported chassis |
Cisco Nexus 9504, Nexus 9508, Nexus 9516 |
|
Port count |
32 x 100G Ethernet |
|
Port form factor |
QSFP28 |
|
Breakout capability |
1x100G, 2x50G, 1x40G, 4x25G, 4x10G, 1×1/10G |
|
Cisco NX-OS support |
Yes |
|
Cisco ACI spine support |
No |
|
MACSec support |
Yes |
|
N+1 fabric module redundancy |
Yes |
|
Fabric modules for maximum bandwidth |
4 |
|
Performance and power |
6.4 Tbps, 2.16 bpps, 520 W typical, 840 W maximum |
Application Scenarios
N9K-X9732C-FX fits a Nexus 9500 modular chassis that is staying in Cisco NX-OS mode and needs 32 QSFP28 100G ports. The purchase should be tied to the chassis fabric module plan, because Cisco lists four fabrics for maximum bandwidth and five fabrics for N+1 redundancy.
Use this SKU when the design keeps 32 100G ports but requires MACSec support that is not listed for N9K-X9732C-EX. The buyer should confirm the FX line-card requirement in the BOM instead of treating all 32-port Nexus 9500 100G cards as interchangeable.
N9K-X9732C-FX is relevant when the chassis design is built around 9732C-FX line cards and the project wants the fifth fabric module connector used for N+1 fabric redundancy. This is a fabric-design decision, not only a line-card quantity decision.
Product Comparison
|
Parameter |
N9K-X9732C-FX |
N9K-X9736C-FX | ||
|---|---|---|---|---|
|
Product family |
Cisco Nexus 9500 Series |
Cisco Nexus 9500 Series |
Cisco Nexus 9500 Series |
Cisco Nexus 9500 Series |
|
Product type |
Cloud-scale 100G line card |
Cloud-scale 100G line card |
Cloud-scale 100G line card |
BaseT plus QSFP line card |
|
Port count |
32 |
32 |
36 |
48 BaseT plus 4 QSFP28 |
|
Primary port type |
100G QSFP28 |
100G QSFP28 |
100G QSFP28 |
1/10G BaseT plus 40/100G QSFP28 |
|
Cisco NX-OS support |
Yes |
Yes |
Yes |
Yes |
|
Cisco ACI spine support |
No |
Yes |
Yes |
No |
|
MACSec support |
Yes |
No |
Yes |
Yes |
|
N+1 fabric module redundancy |
Yes |
No |
No |
No |
|
Fabric modules for maximum bandwidth |
4 |
4 |
5 |
4 |
|
Fabric modules for N+1 redundancy |
5 |
Not listed |
Not listed |
Not listed |
|
Performance |
6.4 Tbps |
6.4 Tbps |
7.2 Tbps |
1.76 Tbps |
|
Forwarding rate |
2.16 bpps |
4.3 bpps |
2.4 bpps |
0.59 bpps |
|
Packet buffer |
160 MB |
160 MB |
160 MB |
80 MB |
|
Typical power |
520 W |
430 W |
607 W |
513 W |
|
Maximum power |
840 W |
720 W |
900 W |
684 W |
- In a N9K-X9732C-FX vs N9K-X9732C-EX comparison, the main difference is operating role and security capability: the FX model is NX-OS-only with MACSec and N+1 fabric module redundancy, while the EX model is listed for ACI spine but not MACSec.
- The N9K-X9732C-FX vs N9K-X9736C-FX difference is density and fabric planning: N9K-X9732C-FX has 32 QSFP28 ports and can use a fifth fabric for N+1 redundancy, while N9K-X9736C-FX has 36 QSFP28 ports and requires five fabrics for maximum bandwidth.
- For N9K-X9732C-FX vs N9K-X9788TC-FX comparison work, the port type decides the order: N9K-X9732C-FX is a 32-port 100G QSFP28 line card, while N9K-X9788TC-FX combines 48 BaseT ports with four 40/100G QSFP28 ports.
- Buyers deciding which model to choose should resolve the question through NX-OS or ACI mode, MACSec requirement, port media, and the fabric module count already planned for the Nexus 9500 chassis.
Selection Guide
1. Select N9K-X9732C-FX for NX-OS 32-port 100G with MACSec
Choose N9K-X9732C-FX when the Nexus 9500 chassis is an NX-OS design and the BOM requires 32 QSFP28 100G ports with MACSec support.
2. Use N9K-X9732C-EX for ACI-spine 32-port requirements
Select N9K-X9732C-EX instead when the line card must be listed for Cisco ACI spine use and MACSec or N+1 fabric redundancy is not the deciding requirement.
3. Move to N9K-X9736C-FX for higher 100G port count
Compare N9K-X9736C-FX when the order needs 36 QSFP28 100G ports and the fabric design can support the five-fabric maximum-bandwidth requirement.
4. Validate fabric and optics before price approval
Confirm the chassis, fabric module type, fabric slot plan, optics, breakout cables, and software support before approving the quote, because the line card depends on the Nexus 9500 modular system around it.
Ordering Checklist
|
Check Item |
What to Confirm |
Why It Matters |
|---|---|---|
|
Exact SKU |
N9K-X9732C-FX or spare format N9K-X9732C-FX= |
Prevents substitution with EX, 9736C-FX, or BaseT line-card SKUs |
|
Chassis |
Cisco Nexus 9504, Nexus 9508, or Nexus 9516 |
Confirms this is being ordered for a supported Nexus 9500 modular chassis |
|
Software mode |
Cisco NX-OS design, not ACI spine |
Cisco lists X9732C-FX for NX-OS and not for ACI spine in the line-card summary |
|
Fabric module count |
4 for maximum bandwidth or 5 for N+1 redundancy |
Fabric quantity changes the redundancy outcome for this FX 32-port line card |
|
Fabric module type |
Same-type fabric modules across the chassis |
Cisco hardware guides require the modular switch fabric modules to match |
|
Optics and breakout |
QSFP28 optics, breakout cables, and software release support |
Breakout capability depends on supported media and software |
|
FEX expectation |
No NX-OS FEX support for N9K-X9732C-FX |
Avoids ordering this line card for a FEX attachment design that Cisco excludes |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Brand | Cisco | Product family | Cisco Nexus 9500 Series |
| Product ID | N9K-X9732C-FX | Product type | Cloud-scale 100G line card |
| Cisco ordering description | Cisco Nexus 9500 32p 100G QSFP cloud-scale line card | Spare part format | N9K-X9732C-FX= |
| Supported chassis | Cisco Nexus 9504, Nexus 9508, Nexus 9516 | Line-card slots by chassis | 4, 8, or 16 line-card slots depending on chassis |
| Port count | 32 x 100G Ethernet | Port form factor | QSFP28 |
| Breakout capability | 1x100G, 2x50G, 1x40G, 4x25G, 4x10G, 1×1/10G | Cisco NX-OS support | Yes |
| Cisco ACI spine support | No | MACSec support | Yes |
| N+1 fabric module redundancy | Yes | Fabric modules for maximum bandwidth | 4 |
| Fabric modules for N+1 redundancy | 5 | Line-card ASIC | Four Cisco LS1800FX ASIC instances |
| Performance | 6.4 Tbps | Forwarding rate | 2.16 bpps |
| Packet buffer | 160 MB | Weight | 15 lb (6.8 kg) |
| Typical power | 520 W | Maximum power | 840 W |
| MTBF | 429,090 hours | Hot-swappable | Yes |
| Airflow | Port-side intake | FEX support in NX-OS mode | No |
Get More Information
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