N9K-C9332D-GX2B – 32x400G QSFP-DD Ports – 2×1/10G SFP+ Ports – Nexus GX2B
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N9K-C9332D-GX2B Description
N9K-C9332D-GX2B is a Cisco Nexus 9332D-GX2B fixed-port data center switch in the Nexus 9000 family for high-density 400G leaf or spine roles in ACI and NX-OS fabrics. It provides 32 fixed 400G QSFP-DD ports, two fixed 1/10G SFP+ ports, 25.6 Tbps switching bandwidth, and 4.17 bpps forwarding in a 1RU chassis, with 32 GB system memory and 128 GB SSD storage for large data center switching deployments.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
N9K-C9332D-GX2B |
|
Product type |
Fixed-port data center switch |
|
Form factor |
1RU |
|
QSFP-DD ports |
32 x 400G QSFP-DD |
|
SFP+ ports |
2 x 1/10G SFP+ |
|
Switching bandwidth |
25.6 Tbps |
|
Forwarding rate |
4.17 bpps |
|
System memory |
32 GB |
|
SSD storage |
128 GB |
|
Power supply options |
1500W AC or 1100W DC |
|
Airflow options |
Port-side intake or port-side exhaust |
|
Switch mode support |
Cisco ACI spine and leaf plus Cisco NX-OS |
Product Performance
Key Features
N9K-C9332D-GX2B concentrates 32 QSFP-DD data ports in a 1RU Nexus 9300-GX2B switch, which suits fabric designs that need 400G density without moving to a 2RU 48-port or 64-port GX2A model.
Cisco documents QSFP-DD operation at 400G, 200G, 100G, and 40G, along with 4x10G, 4x25G, 4x50G, 4x100G, and 2x200G breakout options that must be mapped before optics are ordered.
The non-M PID carries 32 GB of system memory; buyers comparing it with N9K-C9332D-GX2B-M should treat memory as the key purchasing difference rather than the physical port layout.
Cisco marks the last eight QSFP-DD ports as wire-rate MACsec capable, so encrypted fabric or interconnect links need a port assignment plan before cabling.
Cisco lists support for ACI spine, ACI leaf, and NX-OS mode, making the software mode and release plan part of the hardware approval check.
The switch uses six fan modules and two power supplies, with Cisco-listed port-side intake and exhaust airflow options plus 1500W AC and 1100W DC power choices.
Application Scenarios
Use this SKU in Nexus fabrics where the port plan calls for 32 fixed QSFP-DD interfaces in one rack unit and the design does not need the larger 48-port or 64-port GX2A chassis.
N9K-C9332D-GX2B fits ACI environments that require the documented default leaf profile, fabric-link planning on ports 25 to 32, and a confirmed decision on leaf or spine registration before deployment.
This model works for projects moving from 40G or 100G QSFP-based links toward 400G QSFP-DD while still needing native 100G, 40G, and breakout options during the transition.
Product Comparison
|
Parameter |
N9K-C9332D-GX2B |
N9K-C9348D-GX2A |
N9K-C9364D-GX2A |
|---|---|---|---|
|
Product type |
Fixed-port data center switch |
Fixed-port data center switch |
Fixed-port data center switch |
|
Form factor |
1RU |
2RU |
2RU |
|
QSFP-DD ports |
32 x 400G |
48 x 400G |
64 x 400G |
|
SFP+ ports |
2 x 1/10G |
2 x 1/10G |
2 x 1/10G |
|
Switching bandwidth |
25.6 Tbps |
38.4 Tbps |
51.2 Tbps |
|
Forwarding rate |
4.17 bpps |
8.35 bpps |
8.35 bpps |
|
System memory |
32 GB |
32 GB |
32 GB |
|
SSD storage |
128 GB |
128 GB |
128 GB |
|
System buffer |
120 MB |
120 MB |
120 MB |
|
CPU |
6 cores |
6 cores |
6 cores |
|
MACsec-capable QSFP-DD ports |
Last 8 ports |
All 48 ports |
First 16 ports |
|
Switch mode support |
ACI spine, ACI leaf, NX-OS |
ACI spine, ACI leaf, NX-OS |
ACI spine, ACI leaf, NX-OS |
|
Fan modules |
6 fans, 5+1 redundancy |
4 fans, 3+1 redundancy |
4 fans, 3+1 redundancy |
|
AC power rating |
1500W AC |
3200W AC |
3200W AC |
- In a N9K-C9332D-GX2B vs N9K-C9332D-GX2B-M comparison, the port count, 25.6 Tbps bandwidth, and 4.17 bpps forwarding rate stay aligned; the difference is 32 GB memory on N9K-C9332D-GX2B versus 64 GB memory on the -M model.
- The N9K-C9332D-GX2B vs N9K-C9348D-GX2A comparison is mainly chassis size and port density: this SKU is a 1RU 32-port switch, while N9K-C9348D-GX2A is a 2RU 48-port switch with higher listed bandwidth.
- For a N9K-C9332D-GX2B vs N9K-C9364D-GX2A comparison, the 9364D-GX2A increases the QSFP-DD count to 64 ports and 51.2 Tbps, while N9K-C9332D-GX2B keeps the smaller 1RU footprint.
- Buyers deciding which model to choose should align the order with the required 400G port count, memory profile, chassis height, and MACsec-capable port placement shown in the table.
Selection Guide
1. Select the base GX2B model for 32 GB memory
Keep N9K-C9332D-GX2B on the BOM when the design needs the 32-port 400G GX2B hardware profile and does not require the 64 GB memory variant.
2. Move to N9K-C9332D-GX2B-M for the memory variant
Compare N9K-C9332D-GX2B-M only when the same 32-port QSFP-DD layout is acceptable but the system memory requirement points to the 64 GB model.
3. Use GX2A alternatives for larger 400G port blocks
Review N9K-C9348D-GX2A or N9K-C9364D-GX2A when the design requirement is 48 or 64 fixed 400G QSFP-DD ports rather than a compact 32-port 1RU switch.
4. Freeze optics, role, and license details before release
Confirm supported QSFP-DD optics, breakout mode, MACsec placement, ACI or NX-OS role, software subscription tier, Smart Account readiness, fan airflow, and PSU type before final hardware approval.
Ordering Checklist
|
Check item |
What to confirm |
Why it matters |
|---|---|---|
|
Exact product ID |
N9K-C9332D-GX2B rather than N9K-C9332D-GX2B-M |
Keeps the order on the 32 GB memory model |
|
400G port count |
32 fixed QSFP-DD data ports plus two 1/10G SFP+ ports |
Prevents accidental substitution with 48-port or 64-port GX2A models |
|
Optics and breakouts |
Cisco-supported QSFP-DD optics, DAC, AOC, or breakout cables |
Cisco requires supported pluggables for the Nexus 9300-GX2 hardware model |
|
MACsec placement |
Last eight QSFP-DD ports for wire-rate MACsec use |
Encrypted links must be assigned to the documented capable ports |
|
ACI role plan |
Default leaf profile, ports 25 to 32 fabric-link use, and any spine conversion |
ACI discovery and role behavior affect port mapping before installation |
|
Licensing and Smart Account |
Essentials, Advantage, or Premier term subscription with Smart Account handling |
Cisco documents required add-on license ordering for the switch |
|
Power and airflow |
NXA-PAC-1500W-PI, NXA-PAC-1500W-PE, or NXA-PDC-1100W-PI with matching fan airflow |
Fan modules and power supplies must match the rack cooling and input-power plan |
Optional Add-ons
|
Model |
Description |
|---|---|
|
NXA-SFAN-35CFM-PI |
Cisco Nexus 35CFM fan module with port-side intake airflow |
|
NXA-SFAN-35CFM-PE |
Cisco Nexus 35CFM fan module with port-side exhaust airflow |
|
NXA-PAC-1500W-PI |
Cisco Nexus 1500W AC power supply with port-side intake airflow |
|
NXA-PAC-1500W-PE |
Cisco Nexus 1500W AC power supply with port-side exhaust airflow |
|
NXA-PDC-1100W-PI |
Cisco Nexus 1100W DC power supply with port-side intake airflow |
|
NXK-ACC-KIT-1RU |
Cisco Nexus fixed 1RU accessory kit |
Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Product ID | N9K-C9332D-GX2B | Product type | Fixed-port data center switch |
| Form factor | 1RU | QSFP-DD ports | 32 x 400G QSFP-DD |
| SFP+ ports | 2 x 1/10G SFP+ | Native QSFP-DD speeds | 400G, 200G, 100G, and 40G |
| Breakout options | 4x10G, 4x25G, 4x50G, 4x100G, and 2x200G | Switching bandwidth | 25.6 Tbps |
| Forwarding rate | 4.17 bpps | MACsec-capable ports | Last 8 QSFP-DD ports |
| Switch mode support | ACI spine, ACI leaf, and NX-OS | Default ACI role | Leaf switch |
| ACI default port profile | 24 downlinks and 8 fabric links plus 2×1/10G downlinks | System memory | 32 GB |
| SSD storage | 128 GB | System buffer | 120 MB |
| CPU | 6 cores | Management ports | 1 x 10/100/1000BASE-T and 1 x 1G SFP |
| Console port | 1 x RS-232 | USB ports | 1 |
| Fan modules | 6 fans with 5+1 redundancy | Supported fan modules | NXA-SFAN-35CFM-PI, NXA-SFAN-35CFM-PE |
| Airflow options | Port-side intake or port-side exhaust | Power supply slots | 2 |
| Power redundancy | 1+1 redundancy | Power supply selection | NXA-PAC-1500W-PI 1500W AC, NXA-PAC-1500W-PE 1500W AC, or NXA-PDC-1100W-PI 1100W DC selected by airflow and input type |
| Supported DC power supply | NXA-PDC-1100W-PI | AC input voltage | 100 to 240V AC |
| AC frequency | 50 to 60 Hz | Typical power | 638 W |
| Maximum power | 1442 W | Chassis width | 17.3 in (43.9 cm) |
| Chassis depth | 23.9 in (60.8 cm) | Chassis height | 1.72 in (4.4 cm) |
| Chassis weight | 28 lb (12.7 kg) without power supplies and fans | Operating temperature with intake airflow | 32 to 104F (0 to 40C) |
| Operating temperature with exhaust airflow | 32 to 82F (0 to 28C) | Nonoperating temperature | -40 to 158F (-40 to 70C) |
| Relative humidity | 5 to 95 percent noncondensing | Altitude | 0 to 13123 ft (0 to 4000 m) |
| MTBF | 211310 hours | Maximum IPv4 LPM routes | 2 million |
| Maximum IPv4 host entries | 2 million | Maximum IPv6 LPM routes | 1 million |
| Maximum IPv6 host entries | 2 million | Maximum MAC address entries | 1 million |
| Maximum multicast routes | 256000 | IGMP snooping groups | Maximum 32000 |
| Maximum ACL entries | 24000 ingress and 12000 egress | Software subscription tiers | Essentials, Advantage, and Premier |
| License term options | 3-year, 5-year, and 7-year terms |
Get More Information
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