N9K-C93600CD-GX – 28×40/100G QSFP28 – 8×400/100G QSFP-DD – 1RU Spine/Leaf

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Model: N9K-C93600CD-GX
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N9K-C93600CD-GX Description

The N9K-C93600CD-GX is a Cisco Nexus 9300-GX Series 1RU fixed-port switch for spine and leaf racks that mix 100G server links with 400G uplinks. The switch has 28 40/100G QSFP28 ports, 8 400/100G QSFP-DD ports, 12 Tbps of switching bandwidth, 4.0 Bpps of forwarding and 80 MB of system buffer, and it runs on 1100W power supplies with port-side intake or exhaust airflow. Ports 35-36 stay reserved for fabric links and cannot be converted to downlinks.

Quick Specs

Parameter

Specification

Product ID

N9K-C93600CD-GX

Product type

1RU fixed-port data center switch

Port layout

28 x 10/25/40/100G QSFP28 and 8 x 10/25/40/50/100/200/400G QSFP-DD

Fabric role

Cisco Nexus spine or leaf switch

Switching capacity

12 Tbps

Forwarding rate

4.0 Bpps

DRAM

32 GB

SSD storage

128 GB

Packet buffer

80 MB

Management port

1 x 10/100/1000BASE-T and 1 x 1G SFP

Power supply options

1100W AC, 1100W DC, or 1100W HVAC/HVDC

Airflow options

Port-side intake or port-side exhaust

Product Performance

Switching Bandwidth
Fixed High-Speed Port Layout
Forwarding Rate

Key Features

Mixed QSFP28 And QSFP-DD Ports

Twenty-eight QSFP28 ports carry 40/100G and eight QSFP-DD ports carry 100G or 400G. One 1RU chassis therefore serves both server-facing and uplink roles.

12 Tbps In 1RU

Switching bandwidth is 12 Tbps with 4.0 Bpps of forwarding. The 80 MB system buffer is the same as the larger 64-port QSFP28 model.

Breakout By Port Range

Ports 1-24 support 2x50G on every port and 4x10G or 4x25G on odd ports, with the even port purged. Ports 29-34 add 4x100G once converted to downlinks.

10G Through QSA

All ports accept 10G optics through a QSA adapter. The switch does not support 1G or 100M optics.

Choice Of 1100W Power Types

Each 1100W supply is available as AC, DC or HVAC/HVDC, and two supplies run in a 1+1 pair. Fans and supplies must share one airflow direction.

NX-OS Or ACI Operation

The switch runs NX-OS 9.3.3 or later and ACI-N9KDK9-14.2(2e) or later, and supports both ACI spine and ACI leaf roles.

Application Scenarios

Leaf With 400G Uplinks

In a data center row, the switch serves as a leaf with 100G QSFP28 links down to servers and the eight QSFP-DD ports running 400G or 100G uplinks toward the spine.

Compact ACI Spine Or Leaf

A 1RU ACI fabric with limited rack space can run the switch in either the spine or leaf role, because the 93600CD-GX hardware supports both ACI modes.

Mixed-Speed Migration Pod

During a move from 40G and 100G to 400G, a pod keeps its existing QSFP28 optics on ports 1-28 and adds 400G links on the QSFP-DD ports without a second switch type.

Product Comparison

Parameter

N9K-C93600CD-GX

N9K-C9364C-GX

N9K-C9316D-GX

Ports

28 x 100/40-Gbps QSFP28 and 8 x 400/100-Gbps QSFP-DD

64 x 100/40-Gbps QSFP28

16 x 400/100/40-Gbps QSFP-DD

Physical dimensions (H x W x D)

1RU: 1.72 x 17.37 x 25.5 in.

2RU: 3.39 x 17.41 x 22.59 in.

1RU: 1.72 x 17.37 x 25.5 in.

Switching capacity

12 Tbps

12.8 Tbps

12.8 Tbps

Forwarding rate

4.0 Bpps

Over 4.3 Bpps

Over 4.3 Bpps

Packet buffer

80 MB

80 MB

80 MB

Power supplies

1100W AC, DC or HVAC/HVDC

2000W AC, DC or HVAC/HVDC

1100W AC, DC or HVAC/HVDC

Typical power consumption

586W

811W

420W

Maximum power consumption

1071W

1622W

1010W

Airflow

Port-side intake or exhaust

Port-side intake or exhaust

Port-side intake or exhaust

N9K-C93600CD-GX is the mixed-speed model of this group: it puts 28 QSFP28 ports and 8 QSFP-DD ports in 1RU at 12 Tbps, while N9K-C9364C-GX uses 2RU for 64 QSFP28 ports and no QSFP-DD at 12.8 Tbps. A fabric that needs more than 28 40/100G downlinks on one switch moves to N9K-C9364C-GX, which also changes the power supplies from 1100W to 2000W units. A design that wants only 400G-capable ports, 16 QSFP-DD and no QSFP28, should use N9K-C9316D-GX, which keeps the 1RU height and 12.8 Tbps. Only N9K-C93600CD-GX combines QSFP28 server links and QSFP-DD uplinks in a single 1RU chassis.

Ordering Checklist

  • Fan modules: Order NXA-FAN-35CFM-PE (exhaust, blue) or NXA-FAN-35CFM-PI (intake, burgundy). Fans and power supplies must share one airflow direction, so the PE or PI suffix has to match on every fan and supply.
  • Power supplies: Select NXA-PAC-1100W-PE2 or -PI2 (AC), NXA-PDC-1100W-PE or -PI (DC), NXA-PHV-1100W-PE or -PI (HVAC/HVDC), or the titanium-grade NXA-PAC-1100W-PE3 or -PI3. The PID sets the input type and airflow side; an AC supply cannot be swapped for a DC feed after delivery.
  • Power cords: Add the cord for the destination country, CAB-HVAC-SD-0.6M, CAB-HVAC-C14-2M, CAB-HVAC-RT-0.6M or CAB-HVDC-3T-2M for HVAC/HVDC supplies, or NO-POWER-CORD. A supply ordered without the right cord cannot be connected to the rack feed on arrival.
  • Rack kit: Add NXK-ACC-KIT-1RU, listed as the accessory for this 1RU switch. The mounting hardware is a separate accessory line on the order table.

Optional Add-ons

Model

Description

NXA-FAN-35CFM-PI

Nexus 35CFM fan with port-side intake airflow

NXA-FAN-35CFM-PE

Nexus 35CFM fan with port-side exhaust airflow

NXA-PAC-1100W-PI2

Nexus AC 1100W power supply with port-side intake airflow

NXA-PAC-1100W-PE2

Nexus AC 1100W power supply with port-side exhaust airflow

NXA-PDC-1100W-PI

Nexus 1100W DC power supply with port-side intake airflow

NXA-PDC-1100W-PE

Nexus 1100W DC power supply with port-side exhaust airflow

NXA-PHV-1100W-PI

Nexus 1100W HVAC/HVDC power supply with port-side intake airflow

NXA-PHV-1100W-PE

Nexus 1100W HVAC/HVDC power supply with port-side exhaust airflow

NXK-ACC-KIT-1RU

Nexus 9000 fixed accessory kit

Specifications

Parameter Specification Parameter Specification
Product ID N9K-C93600CD-GX Product type Fixed-port data center switch
Rack units 1RU Port layout 28 x QSFP28 and 8 x QSFP-DD
QSFP28 port speeds 10/25/40/100-Gigabit ports 1-28 QSFP-DD port speeds 10/25/40/50/100/200/400-Gigabit ports 29-36
Management port 1 x 10/100/1000BASE-T and 1 x 1G SFP Console port 1 x RS-232
USB port 1 Switching capacity 12 Tbps
Forwarding rate 4.0 Bpps DRAM 32 GB
SSD storage 128 GB Packet buffer 80 MB
CPU 4 cores QSA support 10G QSA support on all ports
Unsupported optic speeds 1G and 100M optics are not supported Ports 1-24 breakout 2x50G on all ports; 4x10G and 4x25G on odd ports with even ports purged
Ports 25-28 breakout 2x50G, 4x10G, and 4x25G Ports 29-34 breakout 2x50G, 4x10G, 4x25G, and 4x100G on converted downlinks
Ports 35-36 role Reserved for fabric links and cannot be converted to downlinks Port group rule Ports 1-24 operate by four-port quads; ports 25-28 operate by two-port groups
ACI spine support Yes ACI leaf support Yes
Minimum ACI image ACI-N9KDK9-14.2(2e) Minimum NX-OS image NXOS-9.3.3
Power supply selection NXA-PAC-1100W-PI2 1100W AC, NXA-PAC-1100W-PE2 1100W AC, NXA-PDC-1100W-PI 1100W DC, NXA-PDC-1100W-PE 1100W DC, NXA-PHV-1100W-PI 1100W, or NXA-PHV-1100W-PE 1100W selected by input type Power supply modules 2 modules, 1 for operation and 1 for redundancy
Supported AC power supplies NXA-PAC-1100W-PI2, NXA-PAC-1100W-PE2 Supported DC power supplies NXA-PDC-1100W-PI, NXA-PDC-1100W-PE
Supported HVAC/HVDC power supplies NXA-PHV-1100W-PI, NXA-PHV-1100W-PE AC input voltage 100 to 240V
HVAC input voltage 100 to 277V DC input voltage -40 to -72V
HVDC input voltage -240 to -380V AC input frequency 50 to 60 Hz
Fan modules 6 total, 5 for operations and 1 for redundancy Supported fan modules NXA-FAN-35CFM-PI, NXA-FAN-35CFM-PE
Airflow options Port-side intake or port-side exhaust Airflow matching requirement All fan modules must use the same airflow direction
Chassis width 17.37 in (44.13 cm) Chassis depth 25.5 in (64.8 cm)
Chassis height 1.72 in (4.37 cm) Weight 12.7 kg (28 lb)
Operating temperature 32 to 104F (0 to 40C) Storage temperature -40 to 158F (-40 to 70C)
Operating humidity 5 to 90% Storage humidity 5 to 95%
Operating altitude 0 to 13,123 ft (0 to 4,000 m) MTBF 295,515 hours
Maximum IPv4 LPM routes 896,000 Maximum IPv4 host entries 896,000
Maximum IPv6 LPM routes 448,000 Maximum IPv6 host entries 896,000
Maximum MAC address entries 512,000 Maximum multicast routes 32,000
VLAN IDs 4096 with 127 reserved Maximum VRF instances 16,000
Maximum ECMP paths 64 Maximum port channels 512
Maximum links in a port Channel 32 Active SPAN sessions 4
Accessory kit NXK-ACC-KIT-1RU RoHS compliance Yes
Optics reference Cisco transceiver support tables for supported optical modules

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    Provided detailed product literature when I asked for spec clarifications.

    Michelle Cruz
    Posted on 06/12/2025
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    5.0

    Needed expedited delivery for an urgent project. Layer23 made it happen.

Questions & Answers

  • Can N9K-C93600CD-GX run in NX-OS mode and ACI mode?

    Yes, N9K-C93600CD-GX runs in NX-OS mode from NXOS-9.3.3 or later and in ACI mode from ACI-N9KDK9-14.2(2e) or later. ACI mode supports both the spine role and the leaf role, because the 93600CD-GX hardware handles both ACI modes in a compact 1RU chassis.

  • How is the airflow direction chosen on N9K-C93600CD-GX?

    Airflow on N9K-C93600CD-GX is port-side intake or port-side exhaust, set by the PID suffix: -PI for intake and -PE for exhaust. All fan modules and both power supplies must use the same direction, so NXA-FAN-35CFM-PI pairs with NXA-PAC-1100W-PI2 and the -PE parts pair together.

  • Which ports on N9K-C93600CD-GX must run at the same speed?

    On N9K-C93600CD-GX, ports 1-24 form quads of four, and each quad must run at one speed. Ports 25-26 and ports 27-28 are pairs that must also match. When a QSFP28 port breaks out, all four lanes must be 10G or all four 25G, per the hardware installation guide.

  • What happens on N9K-C93600CD-GX when a second power supply is inserted?

    When a second supply is inserted into N9K-C93600CD-GX that runs on one supply, the fans drop to 50% of maximum speed for about 12 seconds, and the new supply can take up to 10 seconds to activate. Keep the first supply in place until the second is active, per the hardware installation guide.

  • What input voltage ranges do the 1100W supplies for N9K-C93600CD-GX accept?

    The 1100W AC supply for N9K-C93600CD-GX accepts 100-240 VAC with 1100 W maximum output. The HVAC/HVDC supply takes 100-277 VAC or 240-380 VDC, and the DC supply takes -48 to -60 VDC, per the hardware installation guide. The supplies are hot-swappable and run in n+1 or 1+1 redundancy.

  • How much power does N9K-C93600CD-GX draw and how much heat does it release?

    The hardware installation guide gives N9K-C93600CD-GX a maximum draw of 1100 W and 3,753.356 BTU per hour. The data sheet lists 1071 W maximum, so the circuit and cooling must follow the higher guide figures.

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