Juniper QFX5120-48Y-AFO2 Network Switch User Manual

1. บทนำ

This manual provides essential information for the installation, operation, and maintenance of the Juniper QFX5120-48Y-AFO2 network switch. This high-performance switch is designed for data center and enterprise environments, offering 48 ports of 25 Gigabit Ethernet and 8 ports of 100 Gigabit Ethernet, along with front-to-back airflow for efficient cooling.

โปรดอ่านคู่มือนี้อย่างละเอียดก่อนทำการติดตั้งหรือใช้งานอุปกรณ์ เพื่อให้มั่นใจได้ว่าอุปกรณ์ทำงานได้อย่างถูกต้องและปลอดภัย

2. อะไรอยู่ในกล่อง

ตรวจสอบว่าส่วนประกอบทั้งหมดอยู่ครบและไม่เสียหายเมื่อแกะกล่อง:

• 1x Juniper QFX5120-48Y-AFO2 Network Switch
• 2x Power Supply Units (PSU)
• 1x Rack Mount Kit (Note: Rails Kit not included with this renewed product)
• สายไฟ 2x
• 1x สายคอนโซล

3. การตั้งค่า

3.1 การติดตั้งทางกายภาพ

The Juniper QFX5120-48Y-AFO2 switch is designed for rack mounting. Ensure the rack is stable and has adequate space for ventilation.

1. การติดตั้งแร็ค: Attach the provided rack mount brackets to the sides of the switch using the screws included with the kit. Secure the switch into a standard 19-inch equipment rack. Ensure proper alignment and support.
2. ข้อควรพิจารณาเกี่ยวกับการไหลเวียนของอากาศ: This model features front-to-back airflow. Ensure that the rack environment supports this airflow direction to prevent overheating. Cool air enters from the front and exits from the rear.

3.2 การเชื่อมต่อสายไฟ

The switch comes with dual power supply units for redundancy.

1. Insert both power supply units into their respective slots at the rear of the switch.
2. Connect the provided power cords to the PSUs and then to a grounded AC power source.
3. ตรวจสอบให้แน่ใจว่าแหล่งพลังงานเป็นไปตามปริมาตรtage and current requirements specified in the 'Specifications' section.

3.3 การเชื่อมต่อเครือข่าย

Connect network cables to the appropriate ports on the front panel.

This image displays the front panel of the Juniper QFX5120-48Y-AFO2 switch. It features 48 small form-factor pluggable (SFP28) ports for 25 Gigabit Ethernet connections, arranged in two rows. To the right, there are 8 larger quad small form-factor pluggable (QSFP28) ports for 100 Gigabit Ethernet connections. The design indicates front-to-back airflow, crucial for cooling in data center environments.

• พอร์ต 25G: Use SFP28 transceivers and compatible fiber optic cables for 25 Gigabit Ethernet connections.
• พอร์ต 100G: Use QSFP28 transceivers and compatible fiber optic cables for 100 Gigabit Ethernet connections.

3.4 การเชื่อมต่อคอนโซล

For initial configuration and management, connect a computer to the console port using the provided console cable.

• Connect one end of the console cable to the console port on the switch.
• Connect the other end to a serial port or USB-to-serial adapter on your computer.
• Configure your terminal emulation software (e.g., PuTTY, Tera Term) with the following settings: 9600 baud, 8 data bits, no parity, 1 stop bit, no flow control.

4. คู่มือการใช้งาน

4.1 การเปิดเครื่อง

Once all physical connections are secure, the switch will power on automatically when connected to a power source. Observe the system status LEDs for boot-up progress.

4.2 การกำหนดค่าเริ่มต้น

Access the switch via the console port for initial setup, including IP address assignment, management credentials, and basic network settings. Refer to Juniper's official documentation for detailed Junos OS configuration guides.

4.3 ไฟแสดงสถานะ (ไฟ LED)

The front panel features various LEDs to indicate the operational status of the switch and its ports. Consult the official Juniper documentation for a complete description of LED behaviors and their meanings.

• ไฟ LED แสดงสถานะระบบ: Indicate power, alarm, and system health.
• ไฟ LED พอร์ต: Indicate link status, activity, and speed for each network port.

5. การบำรุงรักษา

5.1 สภาพแวดล้อม

Maintain the operating environment within specified temperature and humidity ranges to ensure optimal performance and longevity of the switch. Ensure proper airflow around the unit.

5.2 การทำความสะอาด

Periodically clean the exterior of the switch with a soft, dry, lint-free cloth. Do not use liquid or aerosol cleaners directly on the device. Ensure ventilation openings are free from dust and obstructions.

การอัปเดตเฟิร์มแวร์ 5.3 รายการ

Regularly check for and apply firmware (Junos OS) updates from Juniper Networks. Firmware updates often include performance enhancements, security patches, and bug fixes. Follow Juniper's recommended procedures for software upgrades.

6 การแก้ไขปัญหา

This section provides basic troubleshooting steps for common issues. For more complex problems, refer to Juniper's official support documentation or contact technical support.

6.1 ไม่มีไฟฟ้า

• Verify that power cords are securely connected to both the switch PSUs and the power outlets.
• Check the power source (outlet, PDU) for functionality.
• Ensure the power supply units are fully seated in their bays.

6.2 ไม่มีลิงค์บนพอร์ต

• Check the network cable for damage and ensure it is properly connected at both ends.
• Verify that the transceiver (SFP28/QSFP28) is correctly inserted and compatible.
• ตรวจสอบให้แน่ใจว่าอุปกรณ์ที่เชื่อมต่อเปิดใช้งานอยู่และตั้งค่าอย่างถูกต้อง
• Check the port configuration on the switch (e.g., enabled, speed, duplex).

6.3 Console Access Issues

• Verify the console cable connection.
• Confirm that your terminal emulation software settings (baud rate, data bits, parity, stop bits, flow control) match those specified in Section 3.4.
• Ensure the correct COM port is selected on your computer.

7. ข้อมูลจำเพาะ

8. การรับประกันและการสนับสนุน

This product is offered as a renewed item. For specific warranty details and support options, please refer to the terms provided by the seller, Amazon Renewed, at the time of purchase. General technical support and documentation for Juniper products can be found on the official Juniper Networks webเว็บไซต์.

For assistance with this renewed product, please contact the Amazon Renewed seller directly or refer to your purchase documentation.