8520 Series Installation Guide
> Monitor the Switch
Extreme Networks, Inc. April 01, 2026
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Introduction to the Extreme 8520 Installation Guide
Text Conventions
Help and Support
Documentation and Training
Send Feedback
New in this Guide
Extreme 8520 Overview
8520-48Y Switch Features
8520-48XT Switch Features
Manage Your Switch
Fan Modules for Use with Your Switch
Fan Modules
Power Supplies for Use with Your Switch
750 W AC Power Supply
750 W DC Power Supply
Site Preparation
Plan Your Site
Operating Environment Requirements
Meet Building and Electrical Codes
Set Up the Wiring Closet
Control the Temperature
Control the Humidity Level
Protect Your System from ESD (Electrostatic Discharge)
Rack Specifications and Recommendations
Mechanical Recommendations for the Rack
Ground the Rack
Provide Adequate Space for the Rack
Secure the Rack
Evaluate and Meet Cable Requirements
Label Cables and Keep Accurate Records
Install Cable
Handle Fiber Optic Cable
Cable Distances and Types
Use RJ45 Connector Jackets
Prevent Radio Frequency Interference (RFI)
Meet Power Requirements
Power Supply Requirements
Power Cord Requirements
UPS (Uninterruptible Power Supply) Requirements
Select a UPS
Calculate Volt-Amperage Requirements
Provide a Suitable UPS Transition Time
Follow Applicable Industry Standards
Install Your Switch
Safety Considerations for Installation
What You Will Need for the Installation
Attach the Switch to a Rack or Cabinet
Install Optional Components
Install Internal Power Supplies
Connect Network Interface Cables
Turn on the Switch
Activate and Verify the Switch
Connect to a Management Console
Login for the First Time on Extreme OS ONE
Login for the First Time on Extreme SLX-OS
Remove and Replace Components
Remove a Switch from a Rack
Remove a Switch from a Four-Post Rack
Remove a Switch from a Two-Post Rack
Replace Power Supplies
Power Supply Airflow Direction Requirements
Replace a Power Supply
Connect a DC Power Supply to a DC Power Source
Replace Fan Modules
Fan Airflow Direction Requirements
Replace a Fan Module
Monitor the Switch
System Status LEDs
10/100/1000Base-T RJ-45 Management Port LEDs
SFP+/SFP28 Port LEDs for the 8520-48Y
1G/10G RJ45 Port LEDs for the 8520-48XT
QSFP28 Port LEDs
Technical Specifications
Extreme 8520 Technical Specifications
Acoustic Noise and Fan Speed
Mean Time Between Failures
Power Specifications
750 W Power Supplies Technical Specifications
Environmental
Standards
EMI/EMC Standards
Power Cord Requirements for AC-Powered Switches and AC Power Supplies
Console Connector Pinouts
Safety Information
Considerations Before Installing
General Safety Precautions
Maintenance Safety
Fiber Optic Ports and Optical Safety
GBIC, SFP (Mini-GBIC), QSFP+, XENPAK, and XFP Regulatory Compliance
Cable Routing for LAN Systems
Install Power Supply Units and Connect Power
Select Power Supply Cords
Battery Notice
Battery Warning - Taiwan
Regulatory Information
CE statement
EMC Warnings
China and Taiwan: Restriction of Hazardous Substances (ROHS)
Canadian requirements
China CCC statement
Australia (RCM)
Federal Communications Commission (FCC) Notice
Germany statement
KCC statement (Republic of Korea)
Japan (VCCI Class A)
Japan power cord
Monitor the Switch
The following topics help you monitor the status of the switch as it is running.
Section contents:
System Status LEDs
10/100/1000Base-T RJ-45 Management Port LEDs
SFP+/SFP28 Port LEDs for the 8520-48Y
1G/10G RJ45 Port LEDs for the 8520-48XT
QSFP28 Port LEDs
