C9500X-28C8D-E – 28×40/100G QSFP28 – 8x400G QSFP-DD

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C9500X-28C8D-E Description

The C9500X-28C8D-E is a Cisco Catalyst 9500X Series fixed core and aggregation switch for campus core and data center spine layers. The switch has 28 40/100G QSFP28 ports, 8 40/100/200/400G QSFP-DD ports, 12 Tbps of switching capacity and 8 Bpps of forwarding rate in a 1RU chassis, and the -E suffix carries Network Essentials. SSO on Catalyst 9500X switches requires StackWise Virtual, and 10G operation needs a QSA adapter.

Quick Specs

Parameter

Specification

Product ID

C9500X-28C8D-E

Product type

Fixed core and aggregation switch

Network license

Network Essentials

QSFP28 ports

28 x 40G/100G QSFP28

QSFP-DD ports

8 x 40G/100G/200G/400G QSFP-DD

QSA support

10G with QSA on QSFP28 and QSFP-DD ports

Breakout support

Odd-numbered QSFP28 ports and all QSFP-DD ports

Switching capacity

Up to 12 Tbps

Forwarding rate

8 Bpps

Default power supply

C9K-PWR-1500WAC 1500W AC

Minimum software release

Cisco IOS XE Cupertino 17.7.1

Product Performance

Switching Bandwidth
Forwarding Rate
High-Speed Fixed Port Layout

Key Features

QSFP28 Block With Breakout

Twenty-eight QSFP28 ports run 40G or 100G, and the odd-numbered ports accept breakout cables for lower-speed links.

QSFP-DD Ports For 400G Links

Eight QSFP-DD ports support 40G, 100G, 200G and 400G modules inside a fixed 1RU chassis, and all of them support breakout.

10G Through QSA Adapters

QSA adapters give 10G operation on both the QSFP28 and the QSFP-DD ports, which lets existing 10G links stay in service during a core migration.

Built-In Network Essentials License

The suffix fixes the license tier at Network Essentials, with matching Cisco DNA Essentials subscriptions in 3-year, 5-year and 7-year terms.

Silicon One Q200 Forwarding

The Q200 ASIC provides up to 12 Tbps of switching capacity and 8 Bpps of forwarding rate, with 32 GB of DRAM and 32 GB of flash.

Redundant Power And Swappable Fans

Two slots take 1500W AC or DC supplies, and six field-replaceable fans share one airflow direction, front-to-back by default.

Application Scenarios

Routed Campus Core

In a campus that needs a high-capacity core without Network Advantage, the switch connects distribution pairs over 100G QSFP28 links and 400G QSFP-DD links.

Data Center Row Aggregation

A data center row can use the switch to aggregate leaf switches on its QSFP28 ports while the QSFP-DD ports carry links toward the next tier.

Legacy 10G Core Replacement

A campus core being moved off 10G hardware can keep existing 10G links by fitting QSA adapters into the QSFP28 ports while new 100G links are brought up.

Product Comparison

Parameter

C9500X-28C8D-E

C9500X-28C8D-A

C9500X-60L4D-A

40/100G QSFP28 ports

28

28

0

10/25/50G SFP56 ports

0

0

60

40/100/200/400G QSFP-DD ports

8

8

4

Switching capacity

Up to 12 Tbps

Up to 12 Tbps

Up to 9.2 Tbps

Forwarding rate

8 Bpps

8 Bpps

8 Bpps

ASIC

Cisco Silicon One Q200

Cisco Silicon One Q200

Cisco Silicon One Q200

DRAM

32 GB

32 GB

32 GB

Network license

Network Essentials

Network Advantage

Network Advantage

Breakout cable support

Odd-numbered QSFP28 ports and all QSFP-DD ports

Odd-numbered QSFP28 ports and all QSFP-DD ports

QSFP-DD ports only

C9500X-28C8D-E and C9500X-28C8D-A are the same 1RU hardware, with 28 QSFP28 ports, 8 QSFP-DD ports, the Cisco Silicon One Q200 ASIC and up to 12 Tbps of switching capacity, and they differ only in license: Network Essentials on C9500X-28C8D-E, Network Advantage on C9500X-28C8D-A. Sites that must run Network Advantage order C9500X-28C8D-A instead of this SKU. Port plans built on 10G, 25G or 50G links need C9500X-60L4D-A, which has 60 SFP56 ports and 4 QSFP-DD ports but no QSFP28 ports, and reaches up to 9.2 Tbps instead of 12 Tbps. Breakout is limited to odd-numbered QSFP28 ports and QSFP-DD ports here, and to QSFP-DD ports only on C9500X-60L4D-A.

Ordering Checklist

  • Subscription tier: Add a term subscription at the Network Essentials tier, the same tier as the network license. The order requires it.
  • Smart Account: Name the Smart Account on the order, since new orders must specify one.
  • RFID option: Select an RFID option or C9500-RFID-NONE. RFID cannot be added after the order if it is declined at order time.
  • Power cords: Select a power cord for the destination, because the configuration cannot be completed without one.

Optional Add-ons

Model

Description

C9K-PWR-1500WAC

1500W AC power supply option for Catalyst 9500X

C9K-PWR-1500WDC

1500W DC power supply option for Catalyst 9500X

C9500X-FAN-1U-R

Catalyst 9500X front-to-back cooling fan, maximum six per switch

C9500X-FAN-1U-F

Catalyst 9500X back-to-front cooling fan, maximum six per switch

C9500X-ACCKIT-19I=

19-inch rack mount accessory kit for Catalyst 9500X

C9500X-ACCKIT-23I=

23-inch rack mount accessory kit for Catalyst 9500X

C9500X-4PTH-KIT=

Four-point mounting extension rails and brackets for Catalyst 9500X

C9500X-RFID

RFID option for Catalyst 9500X ordering

C9500-RFID-NONE

RFID opt-out selection for Catalyst 9500X ordering

C9K-F3-SSD-240GB

Cisco pluggable SSD storage, 240 GB

C9K-F3-SSD-480GB

Cisco pluggable SSD storage, 480 GB

C9K-F3-SSD-960GB

Cisco pluggable SSD storage, 960 GB

Specifications

Parameter Specification Parameter Specification
Product ID C9500X-28C8D-E Product type Fixed core and aggregation switch
Network license Network Essentials ASIC Cisco Silicon One Q200
QSFP28 ports 28 x 40G/100G QSFP28 QSFP-DD ports 8 x 40G/100G/200G/400G QSFP-DD
10G QSA support Supported on QSFP28 and QSFP-DD ports Breakout support Odd-numbered QSFP28 ports and all QSFP-DD ports
Network modules C9500-NM-8X and C9500-NM-2Q are not supported on C9500X-28C8D Switching capacity Up to 12 Tbps
Forwarding rate 8 Bpps CPU Intel 2.3-GHz x86 CPU with 8 cores
DRAM 32 GB Flash 32 GB
SSD storage options 240 GB, 480 GB, and 960 GB Catalyst 9500X pluggable SSD options Power supply slots 2 slots
Power supply options C9K-PWR-1500WAC, C9K-PWR-1500WDC AC input voltage 90 to 264 VAC, 47 to 63 Hz with C9K-PWR-1500WAC
DC input voltage -40 to -72 VDC with C9K-PWR-1500WDC Fan modules 6 field-replaceable variable-speed fan units
Airflow options C9500X-FAN-1U-R or C9500X-FAN-1U-F; all six fan units must use the same airflow type Rack units 1 RU
Dimensions 1.73 x 17.5 x 21.8 in. (4.39 x 44.45 x 55.37 cm) Weight 13.28 kg (29.27 lb), chassis with 2 power supplies and built-in fan
BTU output 4,034 BTU/hr with AC or DC PSU MTBF 123,950 hours
Minimum software release Cisco IOS XE Cupertino 17.7.1 Cisco ordering description Catalyst 9500 28x100G + 8x400G switch, NW Essentials License

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    Layer23 made me a believer in alternative sourcing. Same product, better terms. Would have liked a tracking update sooner, but the product is great.

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    Working with Layer23 is what every vendor relationship should feel like. Would have liked a tracking update sooner, but the product is great.

Questions & Answers

  • Which MACsec key length can C9500X-28C8D-E run?

    C9500X-28C8D-E runs the shorter MACsec key length that Network Essentials allows. The longer key length requires Network Advantage, and WAN MACsec also needs Network Advantage on the Catalyst 9500X, so neither can be enabled on C9500X-28C8D-E. Designs that need them should be ordered with the Network Advantage suffix.
  • Does IPsec on C9500X-28C8D-E need an extra authorization?

    Yes. C9500X-28C8D-E carries Network Essentials, and IPsec additionally requires HSECK9, a Smart Licensing authorization code from Cisco Smart Software Manager. Without HSECK9 the feature cannot be turned on. The one-time install persists across reloads and configuration erase, and it is available for the Catalyst 9500X.
  • Does C9500X-28C8D-E run Flexible NetFlow in hardware or in software?

    C9500X-28C8D-E runs software-based Flexible NetFlow on its Silicon One Q200, with up to 2M entries. It requires IOS XE 17.8.1 or later. Hardware Flexible NetFlow is not available on this platform, so flow export load depends on the CPU and the sampling that the design allows.
  • How many routes does C9500X-28C8D-E hold in the default template?

    In the default template C9500X-28C8D-E holds 2M IPv4 and 1M IPv6 LPM routes and 256K MAC addresses. IPv4 multicast routes reach 32K. These are datasheet figures for the 28-port model, and they apply when the default template is in use.
  • What heat output and MTBF does C9500X-28C8D-E have?

    Heat output is 4,034 BTU/hr with either the AC or DC power supply, and cooling must be sized for that figure. The datasheet lists MTBF in hours: 123,950 for the chassis and 4,429,340 for each C9500X-FAN-1U-R or C9500X-FAN-1U-F fan.
  • Does C9500X-28C8D-E accept C9500-NM-8X or C9500-NM-2Q network modules?

    No. Neither C9500-NM-8X nor C9500-NM-2Q is supported on C9500X-28C8D-E, according to the network module matrix in the Catalyst 9500 data sheet. Those modules are used only in C9500-16X-A and C9500-16X-E, so the ports on C9500X-28C8D-E are all fixed and uplink capacity cannot be expanded with a module.
  • How does C9500X-28C8D-E buffer packets?

    C9500X-28C8D-E uses 80 MB of shared on-chip memory for low latency plus 8 GB of HBM, managed with virtual output queuing and 8 queues per port. Queuing and policing are applied at ingress, so the ingress port determines which queue absorbs a burst.

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  • C9500X-28C8D-E Datasheet