1. 서론
This manual provides detailed instructions for the Cisco Small Business 300 Series Managed Switch, model SF300-48P (SRW248G4P-K9-NA). It covers the physical installation, initial configuration, operational procedures, maintenance guidelines, and troubleshooting steps to ensure optimal performance and longevity of your device. Please read this manual thoroughly before operating the switch.
2. 제품 오버view
The Cisco SF300-48P is a 48-port 10/100 Power over Ethernet (PoE) managed switch, designed for small businesses requiring advanced network capabilities. It features Gigabit Ethernet uplinks for high-speed connectivity to the network backbone or servers. This switch provides a secure and reliable foundation for business-class networks, supporting features such as VLANs, Quality of Service (QoS), and comprehensive security options.

그림 1: 앞쪽 view of the Cisco SF300-48P Managed Switch. This image displays the 48 Fast Ethernet ports, two Gigabit Ethernet uplink ports, and system status indicators.
3. 설정
3.1. 패키지 내용
패키지에 다음 품목이 포함되어 있는지 확인하십시오.
- Cisco SF300-48P Managed Switch
- 전원 코드
- 랙 마운트 키트(해당되는 경우)
- 콘솔 케이블
- 문서 CD
3.2. 물리적 설치
SF300-48P 스위치는 데스크탑에 설치하거나 표준 19인치 장비 랙에 장착할 수 있습니다.
- 데스크탑 설치: 스위치를 평평하고 안정적인 표면에 놓으세요. 기기 주변에 충분한 통풍이 되도록 하세요.
- 랙 마운트 설치: 제공된 랙 마운트 브래킷을 동봉된 나사를 사용하여 스위치 측면에 부착합니다. 적절한 랙 나사를 사용하여 스위치를 랙에 고정합니다.
3.3. 전원 연결
Connect the power cord to the AC power inlet on the rear panel of the switch and then to a grounded electrical outlet. The switch will power on automatically.
3.4. 네트워크 연결
- 데이터 포트: Connect network devices (computers, printers, IP phones) to the 10/100 Fast Ethernet ports using standard Ethernet cables.
- PoE 장치: For devices requiring Power over Ethernet, connect them to any of the 48 Fast Ethernet ports. The switch will automatically detect and power compliant PoE devices.
- 업링크 포트: Use the Gigabit Ethernet uplink ports to connect the switch to your core network, router, or other switches for high-speed data transfer.
3.5. 초기 구성 접근
스위치는 다음을 통해 구성될 수 있습니다. web그래픽 사용자 인터페이스(GUI) 또는 콘솔 포트를 통한 명령줄 인터페이스(CLI)를 제공합니다.
- Web 그래픽 사용자 인터페이스: Connect a computer to any switch port. The switch typically obtains an IP address via DHCP or uses a default static IP. Refer to the documentation CD for default IP address information. Open a web 브라우저를 열고 스위치의 IP 주소를 입력하십시오.
- Console CLI: Connect a computer to the switch's console port using the provided console cable. Use a terminal emulation program (e.g., PuTTY) with appropriate serial port settings (e.g., 115200 bps, 8 data bits, no parity, 1 stop bit, no flow control).
4. 사용 설명서
The Cisco SF300-48P is a managed switch, offering extensive configuration options to optimize your network. Key operational aspects include:
- VLAN 구성: Create and manage Virtual Local Area Networks to segment network traffic and enhance security.
- 서비스 품질(QoS): 일관된 성능을 보장하기 위해 중요한 네트워크 트래픽(예: 음성, 비디오)에 우선순위를 부여하십시오.
- 보안 기능: Implement access control lists (ACLs), port security, and other security measures to protect your network from unauthorized access.
- 링크 집계(LAG): 여러 개의 물리적 링크를 하나의 논리적 링크로 결합하여 대역폭을 늘리고 링크 중복성을 제공합니다.
- 스패닝 트리 프로토콜(STP): 네트워크 루프를 방지하고 네트워크 안정성을 확보하세요.
- 모니터링: 활용하다 web GUI or CLI to monitor port status, traffic statistics, and system logs.
For detailed configuration steps for each feature, refer to the comprehensive user guide available on the Cisco support website or the documentation CD.
5. 유지관리
Regular maintenance ensures the reliable operation and longevity of your Cisco switch.
- 펌웨어 업데이트: 정기적으로 Cisco 지원을 확인하세요 website for new firmware versions. Updating the firmware can provide new features, performance improvements, and security patches. Follow the instructions provided with the firmware update package carefully.
- 물리적 청소: Ensure the switch's ventilation openings are clear of dust and debris to prevent overheating. Use a soft, dry cloth to clean the exterior. Do not use liquid cleaners.
- 환경 조건: 제품의 기술 사양에 명시된 권장 온도 및 습도 범위 내에서 스위치를 작동하세요.
- 구성 백업: Regularly back up your switch configuration to an external device. This allows for quick restoration in case of a device failure or misconfiguration.
6. 문제 해결
This section provides solutions to common issues you might encounter with your SF300-48P switch.
6.1. 전원 문제
- 전원 없음: Ensure the power cord is securely connected to both the switch and a working electrical outlet. Verify the outlet is receiving power.
- 시스템 LED 꺼짐: If the System LED is off, the switch is not receiving power or is experiencing a hardware issue. Check power connections.
6.2. 네트워크 연결 문제
- 포트에 링크가 없습니다: Check the Ethernet cable connection between the switch port and the connected device. Ensure the cable is not damaged. Verify the connected device is powered on and functioning correctly.
- Link LED Not Lit: If the Link/Act LED for a port is not lit, there is no active connection. Check cabling and the connected device.
- 네트워크 접속 불가: Verify the switch's IP configuration. Ensure VLAN settings are correct for the connected devices. Check for IP address conflicts.
6.3. PoE 관련 문제
- PoE 장치가 켜지지 않음: Ensure the connected device is PoE compliant. Check the switch's PoE budget and individual port power settings. Verify the cable length does not exceed standard Ethernet limits.
6.4. 공장 초기화
If configuration issues persist, you may need to reset the switch to its factory default settings. This will erase all custom configurations. Refer to the full user guide for the specific procedure, which typically involves pressing a reset button or using a CLI command.
7. 사양
| 특징 | 사양 |
|---|---|
| 제조업체 | 시스코 중소기업 |
| 모델 번호 | SRW248G4P-K9-NA (SF300-48P) |
| 한국어: | 882658296284, 088021467286 |
| 제품 크기(LxWxH) | 22.05 x 19.88 x 4.13 인치 |
| 품목 무게 | 16파운드 |
| 포트 수 | 48 x 10/100 PoE + Gigabit Uplinks |
| 인터페이스 유형 | RJ45 |
| 호환 장치 | Desktop, Network Devices |
| 첫 번째 이용 가능 날짜 | 26년 2011월 XNUMX일 |
8. 보증 정보
Cisco products typically come with a limited hardware warranty. Specific warranty terms and conditions, including duration and coverage, are provided with your product purchase or can be found on the official Cisco web사이트. 보증 청구를 위해 구매 증빙 자료를 보관하세요.
9. 지원
For technical assistance, additional documentation, software downloads, and community forums, please visit the official Cisco Support website. You can find comprehensive resources by searching for your specific model number (SF300-48P or SRW248G4P-K9-NA).
시스코 지원 Web대지: https://www.cisco.com/c/en/us/support/index.html





