Uporabniški priročnik za ethernetno stikalo Juniper Networks EX3400-48P

1. Uvod

This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your Juniper Networks EX3400-48P Ethernet Switch. The EX3400-48P is designed to deliver a high-performance, flexible, and cost-effective solution for demanding data, voice, and video enterprise access environments. It supports Juniper Networks Virtual Chassis technology for simplified network operations.

2. Varnostne informacije

Please read and understand all safety instructions before installing or operating the device. Failure to follow these guidelines may result in injury or damage to the equipment.

• Zagotovite pravilno ozemljitev opreme.
• Do not operate the switch in wet or damp pogojev.
• Use only the power supply provided or approved by Juniper Networks.
• Izogibajte se blokiranju prezračevalnih odprtin, da preprečite pregrevanje.
• Refer to qualified service personnel for any servicing not described in this manual.

3. Izdelek je končanview

The Juniper Networks EX3400-48P is a 48-port Power over Ethernet (PoE+) capable Ethernet switch. It features a compact design suitable for rack mounting and offers various connectivity options.

3.1 Fizične komponente

Slika 1: Pod kotom view of the Juniper EX3400-48P Ethernet Switch, showing the top and front panels with the Juniper Networks logo.

Slika 2: Spredaj view of the EX3400-48P switch, highlighting the 48 Ethernet ports, uplink ports, and status LEDs.

Slika 3: Zadaj view of the EX3400-48P, displaying the modular power supply bay, fan modules, management (MGMT) port, and console (CON) port.

Slika 4: Nagnjen zadnji del view of the EX3400-48P, showing the power supply unit partially extracted, illustrating its modular design.

3.2. Funkcije sprednje plošče

• 48 x 10/100/1000BASE-T Ethernet Ports: For connecting network devices.
• Vrata za navzgornjo povezavo: SFP/SFP+ ports for high-speed connections to other switches or routers.
• LED lučke stanja: Indicators for system status, port activity, and PoE status.

3.3. Značilnosti zadnje plošče

• Power Supply Bay: Houses the modular power supply unit.
• Ventilatorski moduli: Provide cooling for the system.
• Management (MGMT) Port: An out-of-band Ethernet port for device management.
• Console (CON) Port: For local serial console access.

4. Nastavitev

4.1. Razpakiranje in pregled

Carefully remove the switch from its packaging. Inspect the device for any signs of physical damage. Report any damage to your supplier immediately.

4.2. Montaža v stojalo

The EX3400-48P is designed for standard 19-inch rack installation. Use the provided rack-mount brackets and screws to secure the switch in the rack. Ensure adequate space for airflow around the unit.

4.3. Napajalni priključek

1. Prepričajte se, da je stikalo za vklop na zadnji plošči v položaju IZKLOP.
2. Connect the power cord to the power supply unit on the rear of the switch.
3. Drugi konec napajalnega kabla priključite v ozemljeno vtičnico za izmenični tok.
4. Flip the power switch to the ON position. The system status LED should illuminate.

4.4. Začetna konfiguracija

For initial configuration, connect a console cable from your computer to the console port on the rear of the switch. Use a terminal emulation program (e.g., PuTTY, Tera Term) with the following settings:

• Hitrost prenosa: 9600
• Podatkovni biti: 8
• Pariteta: Brez
• Stop bitovi: 1
• Nadzor pretoka: Brez

Follow the on-screen prompts to set up basic network parameters such as IP address, subnet mask, and default gateway.

5. Delovanje

5.1. Vklop/izklop

• Vklop: After connecting the power cord, press the power switch to the ON position. The switch will perform a power-on self-test (POST).
• Ugasniti: To power off, press the power switch to the OFF position. For a controlled shutdown, it is recommended to save the configuration and issue a shutdown command via the command-line interface (CLI) before physically powering off.

5.2. LED indikatorji

LED-lučke na sprednji plošči vizualno prikazujejo stanje delovanja stikala:

• SYS LED: Indicates overall system status (e.g., green for normal operation, amber for warning, red for critical error).
• ALM LED: Označuje stanje alarma.
• PoE LED: Indicates Power over Ethernet status.
• Vrata LED: Indicate link status and activity for each Ethernet port.

5.3. Konfiguracija omrežja

The EX3400-48P can be configured via its command-line interface (CLI) or a web-based graphical user interface (GUI) if enabled. Common configurations include:

• VLAN creation and assignment.
• Port security settings.
• Routing protocols.
• Quality of Service (QoS) settings.
• Spanning Tree Protocol (STP) configuration.

Refer to the Juniper Networks documentation for detailed configuration guides specific to Junos OS.

6. Vzdrževanje

6.1. Posodobitve vdelane programske opreme

Regularly check the Juniper Networks support website for the latest Junos OS firmware updates. Keeping the firmware up-to-date ensures optimal performance, security, and access to new features. Follow the instructions provided with the firmware package for the update procedure.

6.2. Čiščenje

Keep the switch clean and free of dust. Use a soft, dry cloth to wipe the exterior. For ventilation openings, use compressed air to remove dust buildup. Ensure the switch is powered off before cleaning.

6.3. Modular Component Replacement

The EX3400-48P features modular power supplies and fan trays. If a component fails, it can be replaced without powering down the entire switch (hot-swappable). Refer to the Juniper Networks hardware guide for specific replacement procedures.

7. Odpravljanje težav

V tem razdelku so rešitve za pogoste težave, na katere lahko naletite.

7.1. Brez moči

• Preverite, ali je napajalni kabel varno priključen tako na stikalo kot na električno vtičnico.
• Preverite, ali vtičnica deluje.
• Ensure the power switch on the rear panel is in the ON position.
• Inspect the power supply unit for any fault indicators.

7.2. No Link on Port

• Preverite povezavo ethernetnega kabla na obeh koncih.
• Prepričajte se, da je priključena naprava vklopljena in deluje pravilno.
• Try a different port on the switch.
• Verify the cable is not damaged and meets specifications (e.g., Cat5e or higher).

7.3. Težave z omrežno povezljivostjo

• Verify IP address, subnet mask, and gateway settings on the switch and connected devices.
• Preverite konfiguracije VLAN, če je primerno.
• Use diagnostic tools like ping in traceroute from the switch CLI.
• Consult system logs for error messages.

8. Specifikacije

The following table outlines the technical specifications for the Juniper Networks EX3400-48P Ethernet Switch:

9. Garancija in podpora

9.1. Garancija za izdelek

This product is typically covered by a manufacturer's warranty. Please refer to the specific warranty terms provided at the time of purchase or on the official Juniper Networks website. A 30-day return policy may apply depending on the vendor.

9.2. Tehnična podpora

For technical assistance, documentation, software downloads, and further support, please visit the official Juniper Networks support website. You may also contact your authorized Juniper Networks reseller for local support options.