Extreme 7720 Hardware Installation Guide
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Published December 2023
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Preface
Audience
Text Conventions
Documentation and Training
Help and Support
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Extreme 7720 Series Overview
Extreme 7720 Series Switch Features
Port Partitioning
Secure Boot
Power Supplies for Use with Your Switch
Build Stacks
Introduction to Stacking
Build Basic Stacks
Slot Numbers in Stacks
Primary/Backup Switch Redundancy
SummitStack Topologies
Ring Topology: Recommended for Stacking
Daisy Chain Topology: Not Recommended for Stacking
SummitStack Terms
Planning to Create Your Stack
Enable and Disable the Stacking-Support Option
Recommendations for Placing Switches for Stacked Operation
Recommendations for Configuring Stacks
Combining Switches from Different Series
Select Stacking Cables
Use the Extreme Stacking Tool
Set up the Physical Stack
Connecting the Switches to Form the Stack Ring
Examples of Valid Stacking Configurations
Example: Basic Stack with Four Switches
Example: Basic Stack with Eight Switches
Example: Stacked Switches across Several Racks
Connect Your Stack to the Management Network
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
Requirements for PoE Devices
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 the 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
Turn on the Switch
Connect Network Interface Cables
Activate and Verify the Switch
Connect to a Management Console
Log in for the First Time on Switch Engine
Configure the Switch's IP Address for the Management VLAN
Change the Switch OS via the Bootloader Menu
Change the Switch OS via the Startup Menu
Log In for the First Time on Fabric Engine
Remove and Replace Components
Replace Internal Power Supplies
Replace an 800 W Internal AC Power Supply
Replace an 800 W Internal DC Power Supply
Replace Fan Modules
Remove the Device from the Rack
Monitor the Switch
System Status LEDs
RJ-45 Management Port LEDs
QSFP28 Port LEDs
800 W AC Power Supply LEDs
800 W DC Power Supply LEDs
Technical Specifications
7720 Series Technical Specifications
Acoustic Noise and Fan Speed
CPU, Memory Specifications
Mean Time Between Failures
Power 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
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)
BSMI statement (Taiwan)
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
EMC Warnings
China CQC Warning
