C9400-LC-12QC – 12 QSFP+, 4 QSFP28 – Catalyst 9400 line card

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Condition:

New Factory Sealed

Questions

7/mo Solds

Warranty:

3-Year Warranty

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Available on backorder

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C9400-LC-12QC Description

The C9400-LC-12QC is a high-performance 12-port 40G QSFP+ line card designed for high-speed uplink and aggregation in Cisco Catalyst 9400 modular switches. Each QSFP+ port supports native 40G connectivity and can be broken out into 4x10G using breakout cables, providing deployment flexibility between aggregation and core layers. With up to 480 Gbps slot bandwidth and built-in MACsec-256 encryption, it ensures secure and scalable data center-grade switching. Ideal for high-throughput campus core or collapsed distribution designs, the 12QC supports jumbo frames, EEE, and is compatible with SUP-1XL, SUP-2, and SUP-2XL.

C9400-LC-12QC Slot Bandwidth by SUP & Chassis

Supervisor Engine

Chassis

Per-Slot Bandwidth

Oversubscription

C9400X-SUP-2XL

C9404R

480 Gbps

1:1

C9407R

480 Gbps

1:1

C9410R

480 Gbps

1:1

C9400X-SUP-2

C9404R

240 Gbps

1:1

C9407R

240 Gbps

1:1

C9410R

240 Gbps

1:1

C9400-SUP-1XL

C9404R

240 Gbps

1:1

C9407R

120 Gbps

2:1

C9410R

80 Gbps

3:1

Front View

C9400-LC-12QC

1

STATUS LED

5

Captive installation screws

2

LOCATE (blue beacon) LED

6

Ejector levers

3

Vent holes for the port cage

7

PORT LINK LED

4

Model or product number

8

Line card Radio Frequency Identifier (RFID)

C9400-LC-12QC
When 100 Gbps connectivity is configured on ports 9 and 12:
  • Ports 5 and 8 are automatically disabled.
  • The PORT LINK LEDs for ports 5 and 8 turn amber to indicate this.
  • All other ports operate at 40 Gbps.
Alternatively, you can configure 100 Gbps on ports 10 and 11.
  • Doing so will disable ports 6 and 7.

Product Comparison

Parameter

C9400-LC-12QC

C9400-LC-24XS

C9400-LC-48HX

Ports

12 × 40G QSFP+

24 × 10G SFP+

48 × 10G RJ-45

Breakout Support

4 × 10G per port

N/A

N/A

Slot Bandwidth

Up to 480 Gbps

Up to 480 Gbps

Up to 480 Gbps

PoE Support

No

No

Yes (UPOE+, 90W)

MACsec Support

Yes (256-bit)

Yes (256-bit)

Yes (256-bit)

Supervisor Support

SUP-1XL, SUP-2/2XL

SUP-2/2XL

SUP-2/2XL only

MTBF

418,200 hours

456,110 hours

402,300 hours

IOS XE Requirement

16.6.1+

17.3.1+

17.6.1+

Jumbo Frames

Supported

Supported

Supported

Line Card Supervisor Module Compatibility Overview

–

C9400-SUP-1

C9400-SUP-1XL

C9400-SUP-1XL-Y

C9400X-SUP-2

C9400X-SUP-2XL

C9400-LC-12QC

No

No

No

Yes

Yes

C9400-LC-24S

Yes

Yes

Yes

Yes

Yes

C9400-LC-24XS

Yes

Yes

Yes

Yes

Yes

C9400-LC-24XY

No

No

No

Yes

Yes

C9400-LC-48H

Yes

Yes

Yes

Yes

Yes

C9400-LC-48HN

Yes

Yes

Yes

Yes

Yes

C9400-LC-48HX

No

No

No

Yes

Yes

C9400-LC-48P

Yes

Yes

Yes

Yes

Yes

C9400-LC-48S

Yes

Yes

Yes

Yes

Yes

C9400-LC-48T

Yes

Yes

Yes

Yes

Yes

C9400-LC-48TX

No

No

No

Yes

Yes

C9400-LC-48U

Yes

Yes

Yes

Yes

Yes

C9400-LC-48UX

Yes

Yes

Yes

Yes

Yes

C9400-LC-48XS

No

No

No

Yes

Yes

Get More Information

Discover unbeatable prices and fast shipping for the C9400-LC-12QC Access the detailed C9400-LC-12QC datasheet and ensure you’re getting the best deal with our reliable delivery service. Need assistance? Our free live chat support is here to help. For more information about the product and pricing, contact us via Live chat or email us at [email protected]

Quality Certifications

Specifications

Parameter Description
Model C9400-LC-12QC
Port Count 12 × QSFP+
Port Speed 40G or 4x10G (breakout)
Breakout Support Yes (10G x4 per port)
MACsec Supported, 256-bit
PoE Not supported
Slot Bandwidth Up to 480 Gbps
Supervisor Compatibility SUP-1XL, SUP-2, SUP-2XL
Chassis Compatibility C9404R, C9407R, C9410R
IOS XE Requirement 16.6.1 or later
Energy Efficient Ethernet IEEE 802.3az
Jumbo Frame Up to 9216 bytes
MTBF 418,200 hours

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Questions & Answers

  • What troubleshooting steps work when the 12QC ports refuse to link?

    Verify QSFP+/QSFP28 modules are compatible and fully inserted, check cabling, and use 'show interface' for error details.

  • Which captive-screw kit is included with the 12QC card?

    Accessory kit contains captive screws for rack mounting, dust covers, and cable management brackets.

  • How does the 12QC QSFP+ card differ from the 24XY hybrid model?

    12QC supports 40G/100G QSFP+ and breakout, while 24XY offers mixed SFP+/SFP28 for 10G/25G and QSFP28 uplinks.

  • Is there a 10 G-only QSFP+ card alternative to the 12QC?

    No, the 12QC is optimized for high-speed uplinks; for more 10G-only, use 24XS or 48XS SFP+ cards.

  • What data-center leaf designs leverage the 12QC QSFP28 card?

    12QC is often used as a leaf or aggregation switch in modern data centers needing dense 40/100G links.

  • Which LEDs help identify disabled ports on the 12QC when split?

    Amber port LEDs or blinking status means port is disabled or not configured; green indicates active port.

  • How can I hot-swap a 12QC without interrupting 40G traffic?

    Ensure OIR support, remove the module, insert replacement, and check 'show module' and logs.

  • Which QSFP28 transceivers are certified for 100 G on the 12QC?

    Official Cisco QSFP28 SR4, LR4, and ER4 are supported for 100G operation.

  • How do I configure 25 G breakout on the 12QC interfaces?

    Use 'interface breakout' CLI to split 100G into 4x25G; configure each sub-interface individually.

  • Can I mix 12QC and 24XS in the same chassis slot?

    Yes, as long as the chassis and software version support both.

  • Which small-parts bag ships with the 12QC only?

    Captive screws, dust covers, cable managers, and quick guide.

  • How do I reset port groups when using QSFP-to-SFP adapters?

    Shutdown the interface, remove the adapter, reinsert, and re-enable via CLI.

  • What maintenance schedules preserve 12QC performance?

    Monitor logs, keep connectors clean, update firmware, and test backup links.

  • Does the 12QC support 100 G MACsec line-rate?

    Yes, MACsec encryption is supported on 100G with appropriate license.

  • Which CLI commands show 12QC port breakout status?

    'show interfaces breakout', 'show module', and 'show controllers ethernet-controller' display port details.

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Resources Downloads

  • C9400-LC-12QC Datasheet

Product Tag

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