Installation Guide
Table Of Contents
- Table of Contents
- Preface
- ExtremeSwitching 5520 Series Overview
- Port Partitioning
- Power Supplies for Use with Your Switch
- Expansion Modules
- Site Preparation
- Building Stacks
- Installing Your Switch
- Activating and Verifying the Switch
- Installing Expansion Modules
- Installing a V300 Virtual Port Extender
- Install a V300 Virtual Port Extender on a Wall
- Install a V300 Virtual Port Extender Under or on a Table Surface
- Install a V300 Virtual Port Extender in a VESA Mount
- Install a V300 in a Single Rack Mount
- Install a V300 in a Dual Rack Mount
- Install a V300 in a DIN Rail Mount
- Install a V300-8P-2T-W Model in a Single or Dual Rack Mount
- Installing a V300-8P-2T-W Model in a DIN Rail Mount
- Connecting the V300 Virtual Port Extender to Power
- Installing a V400 Virtual Port Extender
- Installing a Half-Duplex to Full-Duplex Converter
- Install a Versatile Interface Module in a 5520 Series Switch
- Installing a V300 Virtual Port Extender
- Replacing AC Power Supplies
- Replacing Fan Modules
- Monitoring the Device
- Technical Specifications
- ExtremeSwitching 5520 Series Technical Specifications
- V300 Virtual Port Extender Specifications
- V400 Virtual Port Extender Technical Specifications
- Half-Duplex to Full-Duplex Converter Technical Specifications
- 350 W AC Power Supplies Technical Specifications
- 715 W AC Power Supplies Technical Specifications
- 1100 W AC Power Supplies Technical Specifications
- 2000 W AC Power Supply Technical Specifications
- Power Cord Requirements for AC-Powered Switches and AC Power Supplies
- Console Connector Pinouts
- Safety and Regulatory Information
- Considerations Before Installing
- General Safety Precautions
- Maintenance Safety
- Fiber Optic Ports and Optical Safety
- Cable Routing for LAN Systems
- Installing Power Supply Units and Connecting Power
- Selecting Power Supply Cords
- Battery Notice
- Battery Warning - Taiwan
- EMC Warnings
- Japan (VCCI Class A)
- Korea EMC Statement
- Glossary
- Index
Figure 38: Graphical Representation of a Ring Topology
Figure 39 shows what the same ring topology would look in actual practice. Each switch in the rack is
connected to the switch above it and the switch below it. To complete the ring, a longer cable connects
Switch 1 with Switch 8.
Figure 39: Switches Connected to Each Other in a Ring Topology
Note that, while a physical ring connection may be present, a ring active topology exists only when all
nodes in the stack are active.
Daisy Chain Topology: Not Recommended for Stacking
Stackable switches can be connected in a daisy-chain topology. This is a ring topology with one of the
links disconnected, inoperative, or disabled. A daisy chain can be created when a link fails or a node
reboots in a ring topology, but the daisy chain topology is not recommended for normal operation.
Connect your stack nodes in a ring topology, not a daisy-chain topology, for normal operation.
In Figure 40, the nodes delineated as the active topology are operating in a daisy-chain configuration,
even though there is physically a ring connection in the stack.
SummitStack Topologies
Building Stacks
56 ExtremeSwitching 5520 Series Hardware Installation Guide