1. Pendahuluan
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. Informasi Keselamatan
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.
- Pastikan peralatan dibumikan dengan benar.
- Jangan mengoperasikan sakelar dalam kondisi basah atau kering.amp kondisi.
- Use only the power supply provided or approved by Juniper Networks.
- Hindari menghalangi bukaan ventilasi untuk mencegah panas berlebih.
- Refer to qualified service personnel for any servicing not described in this manual.
3. Produk Lebihview
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. Komponen Fisik

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

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

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

Gambar 4: Bagian belakang bersudut view of the EX3400-48P, showing the power supply unit partially extracted, illustrating its modular design.
3.2. Fitur Panel Depan
- 48 x 10/100/1000BASE-T Ethernet Ports: For connecting network devices.
- Port Tautan Atas: SFP/SFP+ ports for high-speed connections to other switches or routers.
- Lampu LED status: Indicators for system status, port activity, and PoE status.
3.3. Fitur Panel Belakang
- Power Supply Bay: Houses the modular power supply unit.
- Modul Kipas: 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. Pengaturan
4.1. Membongkar dan Inspeksi
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. Pemasangan Rak
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. Koneksi Daya
- Pastikan sakelar daya di panel belakang berada pada posisi MATI.
- Connect the power cord to the power supply unit on the rear of the switch.
- Colokkan ujung kabel daya lainnya ke stopkontak AC yang memiliki ground.
- Flip the power switch to the ON position. The system status LED should illuminate.
4.4. Konfigurasi Awal
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:
- Tingkat baud: 9600
- Bit data: 8
- Paritas: Tidak ada
- Bit penghenti: 1
- Kontrol aliran: Tidak ada
Follow the on-screen prompts to set up basic network parameters such as IP address, subnet mask, and default gateway.
5. Operasi
5.1. Menghidupkan/Mematikan
- Nyalakan: After connecting the power cord, press the power switch to the ON position. The switch will perform a power-on self-test (POST).
- Matikan: 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. Indikator LED
LED pada panel depan memberikan informasi visual mengenai status pengoperasian sakelar:
- LED SISTEM: Menunjukkan status sistem secara keseluruhan (misalnya, hijau untuk operasi normal, kuning untuk peringatan, merah untuk kesalahan kritis).
- LED ALM: Menunjukkan status alarm.
- LED PoE: Indicates Power over Ethernet status.
- LED Pelabuhan: Indicate link status and activity for each Ethernet port.
5.3. Konfigurasi Jaringan
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. Pemeliharaan
6.1. Pembaruan Firmware
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. Pembersihan
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. Penyelesaian masalah
Bagian ini memberikan solusi untuk masalah umum yang mungkin Anda temui.
7.1. Tidak Ada Kekuatan
- Pastikan kabel daya tersambung dengan benar ke sakelar dan stopkontak.
- Periksa apakah stopkontak berfungsi.
- Pastikan sakelar daya pada panel belakang dalam posisi ON.
- Inspect the power supply unit for any fault indicators.
7.2. Tidak Ada Tautan di Port
- Periksa koneksi kabel Ethernet di kedua ujungnya.
- Pastikan perangkat yang terhubung dihidupkan dan berfungsi dengan benar.
- Try a different port on the switch.
- Verify the cable is not damaged and meets specifications (e.g., Cat5e or higher).
7.3. Masalah Konektivitas Jaringan
- Verify IP address, subnet mask, and gateway settings on the switch and connected devices.
- Check VLAN configurations if applicable.
- Use diagnostic tools like
pingDantraceroutefrom the switch CLI. - Consult system logs for error messages.
8. Spesifikasi
The following table outlines the technical specifications for the Juniper Networks EX3400-48P Ethernet Switch:
| Fitur | Spesifikasi |
|---|---|
| Nomor Model | EX3400-48P |
| Jumlah Pelabuhan | 48 |
| Jenis Antarmuka | SFP+ dan SFP+ |
| Kecepatan Transfer Data | 336 Gigabit Per Detik |
| Jil.tage | 48 Volt (DC) |
| Bahan Kasus | Logam |
| Peringkat Suhu Atas | 50 Derajat Celcius |
| Dimensi Produk | 17.2x13.78x1.73 inci |
| Berat Barang | 12.65 pon |
| Pabrikan | Jintan saru |
| UPC | 832938071001 |
9. Garansi dan Dukungan
9.1. Garansi Produk
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. Dukungan Teknis
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.





