C9400-SUP-1XL-Y – 240 Gbps supervisor engine – Cisco Catalyst 9400

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C9400-SUP-1XL-Y

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C9400-SUP-1XL-Y Description

C9400-SUP-1XL-Y
C9400-SUP-1XL-Y elevates the Catalyst 9400 platform with up to 240 Gbps per slot in a 4-slot chassis, plus on-board 8×10 G SFP+ or 2×40 G QSFP+ uplinks—software-selectable. The “-Y” variant enables up to 90 W per port when paired with Cisco UPOE+ line-cards. Built on Cisco’s programmable UADP 2.0 ASIC, it delivers wire-rate MACsec-256 on every access port, flexible SDM templates, and supports on-box analytics with optional NVMe SSD. Ideal for high-power PoE deployments in smart buildings and secure campus aggregation. Keywords: C9400 SUP 1XL-Y, Catalyst 9400 90W supervisor, C9400-SUP-1XL-Y.

Product Performance

Per-slot switching Capacity(C9404R)
Centralized wired capacity
Forwarding rate

Model Meaning

Chunk

Meaning

Comment

C

Cisco

Vendor prefix

9400

Catalyst 9400 Series chassis

Modular campus switch family

SUP

Supervisor engine

Control plane & fabric module

1XL

Gen-1 “eXtra Large” fabric tier

Up to 240 Gbps/slot in C9404R (120/80 G in larger)

-Y

High-power PoE supervisor

Supports up to 90 W per port via UPOE+ line-cards

Key Features

High-power PoE supervisor

Supports up to 90 W per port with Cisco UPOE+ line-cards, consolidating power and data in one module for IP cameras, Wi-Fi 6 APs, and LED lighting.

Up to 240 Gbps per slot

True line-rate for all 1 / 2.5 / 5 / 10 Gbps access cards in a 4-slot chassis, eliminating hidden bottlenecks under bursty IoT or video traffic.

Flexible uplink modes

Software-selectable mix of 8×10 G SFP+ or 2×40 G QSFP+ uplinks future-proofs aggregation without extra modules.

Wire-rate MACsec-256

Encrypts sensitive east-west and access-edge traffic in hardware, ensuring PCI-DSS, HIPAA and GDPR compliance with zero packet-loss.

Programmable UADP 2.0 ASIC

Enables model-driven telemetry, on-box Python, NETCONF/RESTCONF, and customizable SDM templates for agile network operations.

Carrier-grade resiliency

Stateful SSO/NSF (< 200 ms) and ISSU keep critical services online during upgrades, ideal for 24×7 environments.

Applications Scenarios

Smart-building PoE aggregation

90 W per port powers high-end cameras, digital signage and APs over single cable.

Secure campus distribution

240 Gbps fabric eliminates congestion for multigig uplinks; MACsec secures data.

IoT and sensor networks

Combines high PoE budget with on-box analytics for real-time health and usage monitoring.

C9400-SUP-1XL-Y Module Features

C9400-SUP-1XL-Y

Call Out No.

Feature

Description

1

USB Type A Host Port

This USB port is a host port for an external USB disk drive. It supports USB versions 3.0, 2.0, 1.1, and 1.0.See USB Type A Host Port

2

USB mini Type B Console Port

This USB port can be used as a console port, allowing attachment to PCs that are not equipped with an RS-232 interface.See Console Ports

3

10/100/1000 Ethernet Management Port (RJ-45 connector)

The Ethernet management port is a Layer 3 host port to which you can connect a PC. By default, the Ethernet management port is enabled. You can use the Ethernet management port instead of the switch console port for network management. This port is not active while the switch is operating normally.Note When connecting a PC to the Ethernet management port, you must assign an IP address.See Ethernet Management Port

4

Console port (RJ-45 connector)

This is an RS-232 serial or console port for system management.See Console Ports

5

RESET switch (recessed)

The RESET switch is used to reset and restart the switch.Note The reset switch is recessed into the front panel. Use a paper clip or a small, pointed object to press the RESET switch.

6

1-GigabitEthernet (GE) or 10-GE, or 25-GE uplink ports

The supervisor module has eight small form-factor pluggable (SFP) or SFP+ transceivers which support 1-GE or 10-GE modules. These ports are numbered 1 to 8.Ports 1 and 5 use SFP28 transceivers in 25G mode.Note In the accompanying figure, the ejector lever is not displayed in the redundant supervisor module only for the purpose of displaying the LEDs behind it.See Uplink Ports

7

RFID

Supervisor module Radio Frequency Identifier (RFID).Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

8

40-GE uplink ports

The supervisor module has two 40-GE ports. These ports use QSFP transceivers. Ports are numbered 9 and 10.Note In the accompanying figure, the ejector lever is not displayed in the redundant supervisor module only for the purpose of displaying the LEDs behind it.See Uplink Ports

9

Model Number

Supervisor module model number.

10

Supervisor slot indicator

Bar on the fan tray front panel that indicates the supervisor slots in a chassis.

Product Comparison

Parameter

C9400-SUP-1

C9400-SUP-1XL

C9400-SUP-1XL-Y

Per-slot switching Capacity

80 Gbps

240 Gbps

240 Gbps

Uplink modes

8×10 G / 2×40 G

8×10 G / 2×40 G

8×10 G / 2×40 G

Hardware MACsec

✓

✓

✓

Table scale (IPv4)

112 k

144 k

144 k

Resiliency

SSO/NSF, ISSU

SSO/NSF, ISSU

SSO/NSF, ISSU

Line-rate (1 : 1) Combinations for C9400-SUP-1XL-Y

the following line-cards at true 1 : 1 (zero-oversubscription) in every Catalyst 9400R chassis (C9404R, C9407R, C9410R).

Line-card model

Ports / speed

C9400-LC-48T

48 × 1 G RJ-45 Data

C9400-LC-48P

48 × 1 G RJ-45 PoE+

C9400-LC-48U

48 × 1 G RJ-45 UPOE (60 W)

C9400-LC-48H

48 × 1 G RJ-45 UPOE+ (90 W)

C9400-LC-48S

48 × 1 G SFP

C9400-LC-24S

24 × 1 G SFP

C9400-LC-48TX

48 × 10 G mGig

C9400-LC-48HX

48 × 10 G UPOE+

C9400-LC-48XS

48 × 10 G SFP+

C9400-LC-24XS

24 × 10 G SFP+

C9400-LC-48SFP

48 × 1 G SFP

C9400-LC-24SFP

24 × 1 G SFP

C9400-LC-12QC

12×40 G QSFP (4×100 G mode also)

What is “Line-rate” and 1 : 1?

Term

Definition

Design Impact

Line-rate

Fabric bandwidth equals the sum of all port speeds.

Zero internal bottlenecks – every port can run at full speed.

Oversubscription

Fabric bandwidth less than total port speed. Expressed as 2 : 1, 4 : 1…

Occasional congestion if many ports burst at once.

1 : 1

No oversubscription (pure line-rate).

Ideal for high-density Wi-Fi 6/6E, 100 G aggregation, low-latency apps.

Specifications

Parameter Specification
Product ID C9400-SUP-1XL-Y — Supervisor Engine 1XL-Y
ASIC Cisco UADP 2.0 programmable pipeline
CPU Intel x86 @ 2.4 GHz (8 threads)
DRAM 16 GB DDR4 ECC
Flash 10 GB eMMC
SSD Bay NVMe 240 / 480 / 960 GB (optional)
Per-slot switching Capacity 240 Gbps (C9404R); 120 Gbps (C9407R); 80 Gbps (C9410R)
Centralized wired capacity 1.44 Tbps full-duplex
Uplink personalities 8 × 10 G SFP+ or 2 × 40 G QSFP+ (software-selectable)
MACsec-256 Yes — every port
PoE Type UPOE+ up to 90 W per port
Table scale 144 k IPv4 / 72 k IPv6 / 128 k MAC entries
Resiliency SSO / NSF; ISSU
Telemetry & APIs gRPC MD-T, NETCONF/RESTCONF, on-box Python
Dimensions (H×W×D) 1.7 × 14 × 14 in (4.3 × 35.6 × 35.6 cm)
Weight ~10 lb / 4.5 kg
Max Power Draw 400 W (active / standby)
Operating Temp 0 – 40 °C, non-condensing

Get More Information

Discover unbeatable prices and fast shipping for the C9400-SUP-1XL-Y Access the detailed C9400-SUP-1XL-Y 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

Customer Reviews

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5.0
(10 reviews)
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    Hermione Granger
    Posted on 20/06/2025
    Verified Buyer
    5.0

    Perfectly organized delivery. Documentation was flawless.

    IT Support
    Posted on 28/02/2025
    Verified Buyer
    5.0

    Excellent customer service. Sales rep answered all questions.

    Aarav Bailey
    Posted on 14/05/2024
    Verified Buyer
    5.0

    Layer23-switch.com support is top notch. Supervisor was easy to set up.

    Jayceon Wood
    Posted on 30/03/2024
    Verified Buyer
    5.0

    Recognized instantly by our chassis. Would purchase again.

    Otto Ross
    Posted on 21/02/2024
    Verified Buyer
    5.0

    Used in a redundant supervisor setup, works seamlessly.

Questions & Answers

  • How do I recover a SUP-1XL-Y in failed boot loops?

    Connect via console cable, interrupt the boot sequence, enter ROMMON, and reload the supervisor with the correct IOS XE image. Check for corrupted software or faulty memory modules if issues persist.

  • What interconnect cables come with the SUP-1XL-Y?

    A console cable, USB-A to USB-B management cable, and possibly a grounding kit are included with standard packaging.

  • How does SUP-1XL-Y compare to SUP-1XL in bandwidth?

    SUP-1XL-Y supports higher forwarding rates and more advanced features compared to the standard SUP-1XL, making it better for larger deployments.

  • Can other modular switches replace SUP-1XL-Y in legacy racks?

    No other vendor's supervisors are certified to work in Catalyst 9400 series chassis; always use Cisco original parts.

  • In which aggregation layers is SUP-1XL-Y best deployed?

    The SUP-1XL-Y is ideal in distribution and aggregation layers of mid-sized campus networks that require robust control-plane performance.

  • Which status LED indicates IOS boot on SUP-1XL-Y?

    The STATUS LED on the supervisor panel turns solid green when IOS boots successfully; amber or red indicates errors.

  • What’s the procedure for live supervisor swap on SUP-1XL-Y?

    Ensure dual supervisors are present, switchover to standby, remove the inactive SUP-1XL-Y, insert the replacement, and verify the system status.

  • Which DC power modules are valid for SUP-1XL-Y?

    SUP-1XL-Y is powered via chassis DC or AC power supplies—verify your chassis accepts your preferred power module.

  • What temperature range is specified for SUP-1XL-Y?

    The SUP-1XL-Y operates reliably between 0°C to 40°C (32°F to 104°F) in proper airflow conditions.

  • How do I downgrade IOS on SUP-1XL-Y?

    Copy the desired older image to bootflash, update the boot variable, and reload the supervisor. Confirm compatibility with all modules before downgrading.

  • Can SUP-1XL-Y interoperate with SUP-2XL in a stack?

    Yes, but both supervisors must run compatible IOS XE versions for full feature support in StackWise Virtual.

  • What small-parts kit accompanies the SUP-1XL-Y?

    Kit includes mounting brackets, installation screws, cable management, and ESD strap.

  • How do I erase supervisor-engine configs on SUP-1XL-Y?

    Access via console, enter 'write erase', then reload the supervisor to clear all settings.

  • What preventative steps extend SUP-1XL-Y lifespan?

    Keep air filters clean, monitor log files, maintain proper temperature, and regularly update software.

  • Does SUP-1XL-Y hardware support flexible NetFlow?

    Yes, with the right software package, SUP-1XL-Y supports full NetFlow and telemetry capabilities.

  • What CLI monitor checks supervisor fan speed?

    Use 'show environment' or 'show platform' commands to view fan speed and health metrics.

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