Juniper EX3200/EX4200 Ethernet Switch Operation Manual

About this manual

The EX3200 and EX4200 are fixed‑config and virtual‑chassis Ethernet switches designed for branch offices, campus, and data‑center access layers. They support Layer 2 and Layer 3 features, PoE, and optional uplink modules.

The operation manual covers hardware identification, console connection, device boot and reboot, JUNOS upgrades, password recovery, CLI operation modes, interface and VLAN configuration, spanning‑tree protocols, link aggregation, routing protocols, virtual chassis setup, 802.1X, packet filtering, Class of Service, PoE options, port mirroring, and a full command index. This manual is written in Chinese.

What's inside

• Product Overview
• CLI and Maintenance
• Interface Configuration
• VLAN Configuration
• STP / RSTP / MSTP
• Link Aggregation
• Layer‑3 Protocol Configuration
• Virtual Chassis Operation
• 802.1X Configuration
• Packet Filtering

Specifications

Frequently asked questions

How do I connect to a Juniper device using the console cable?

Use a console cable to connect to the Juniper device as described in the CLI and Maintenance chapter.

How much PoE power is supplied on the first eight ports of an EX3200 switch?

Each of the first eight ports provides 15.4 W of PoE power.

Which JUNOS version adds GVRP support?

GVRP (GARP VLAN Registration Protocol) is supported starting with JUNOS 9.1R1.