EX 4200 Ethernet Switch
- EX-series License Key Generator
- EX 4200 Hardware Guide
- EX-series Software Guide
- JUNOS EX-series Software Documentation
- JUNOS Software (US & Canada; requires encryption agreement)
- Installing EX 4200 Ethernet Switches
- Connecting and Configuring the EX-series Switch (J-Web Procedure)
Comprehensive EX 4200 Tools and Resources:
Download Software
Download software release and software updates for all Juniper Networks products.
• JUNOS Software (Canada & US) 
Research a Problem
Research and solve problems using our support tools.
• Knowledge Base
• JUNOS Bug Search
• Technical Bulletins
Case Management
Create, track and update technical support cases and RMAs. Upload files to assist troubleshooting.
• Create a Case
• My Open Cases
• My Open RMAs
• Search Cases and RMAs
Contract and Product Management
View your install base and service contracts, register security products and activate their support certificates.
• EX-series License Key Generator
• Search Products
• Search Service Contracts
• Order Status
Technical Documentation
Read hardware and software manuals, whitepapers, and tech notes, view streaming media training courses.
• EX 4200 Software and Hardware Documentation
• Web-Based Training
• White Papers
Contact Support
Contact the Juniper Networks Technical Assistance Center (JTAC), Customer Service or Sales.
• Contact Tech Support
• Customer Service Contacts
• Send Feedback
Guidelines and Policies
Identify standard warranty, repair and return policies and priority setting of problems and systematic escalation management to customers with current service and warranty agreements.
• Guidelines and Policies
Security Center
Juniper Networks takes security very seriously and we will take immediate action to address any security related problems that involve our products or services.
• Report a Security Vulnerability
• J-Security Center
• All Security Resources