1. Úvod
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. Konec produktuview
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.

Obrázek 1: Přední 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. Nastavení
3.1. Obsah balení
Ověřte, zda váš balíček obsahuje následující položky:
- Cisco SF300-48P Managed Switch
- Napájecí kabel
- Sada pro montáž do racku (pokud je k dispozici)
- Konzolový kabel
- CD s dokumentací
3.2. Fyzická instalace
The SF300-48P switch can be installed on a desktop or mounted in a standard 19-inch equipment rack.
- Instalace na plochu: Umístěte přepínač na rovný a stabilní povrch. Zajistěte dostatečné větrání kolem zařízení.
- Instalace do racku: Attach the provided rack-mount brackets to the sides of the switch using the included screws. Secure the switch into the rack using appropriate rack screws.
3.3. Připojení napájení
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. Síťová připojení
- Datové porty: Connect network devices (computers, printers, IP phones) to the 10/100 Fast Ethernet ports using standard Ethernet cables.
- PoE zařízení: 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.
- Uplink porty: 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. Přístup k počáteční konfiguraci
Přepínač lze konfigurovat pomocí web-based graphical user interface (GUI) or a command-line interface (CLI) through the console port.
- Web GUI: 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 prohlížeč a zadejte IP adresu přepínače.
- 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. Návod k obsluze
The Cisco SF300-48P is a managed switch, offering extensive configuration options to optimize your network. Key operational aspects include:
- Konfigurace VLAN: Create and manage Virtual Local Area Networks to segment network traffic and enhance security.
- Kvalita služeb (QoS): Prioritize critical network traffic (e.g., voice, video) to ensure consistent performance.
- Bezpečnostní funkce: Implement access control lists (ACLs), port security, and other security measures to protect your network from unauthorized access.
- Agregace odkazů (LAG): Sloučením více fyzických spojení do jednoho logického spojení se zvyšuje šířka pásma a zajišťuje redundance spojení.
- Protokol STP (Spanning Tree Protocol): Zabraňte síťovým smyčkám a zajistěte stabilitu sítě.
- Sledování: Využijte 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. Údržba
Regular maintenance ensures the reliable operation and longevity of your Cisco switch.
- Aktualizace firmwaru: Pravidelně kontrolujte podporu Cisco 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.
- Fyzické čištění: 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.
- Podmínky prostředí: Operate the switch within the recommended temperature and humidity ranges specified in the product's technical specifications.
- Záloha konfigurace: Regularly back up your switch configuration to an external device. This allows for quick restoration in case of a device failure or misconfiguration.
6. Řešení problémů
This section provides solutions to common issues you might encounter with your SF300-48P switch.
6.1. Problémy s napájením
- Bez napájení: Ensure the power cord is securely connected to both the switch and a working electrical outlet. Verify the outlet is receiving power.
- Systémová LED dioda vypnuta: If the System LED is off, the switch is not receiving power or is experiencing a hardware issue. Check power connections.
6.2. Problémy s připojením k síti
- Žádné spojení na portu: 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.
- Bez přístupu k síti: Verify the switch's IP configuration. Ensure VLAN settings are correct for the connected devices. Check for IP address conflicts.
6.3. PoE Issues
- Zařízení PoE se nezapíná: 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. Obnovení továrního nastavení
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. Specifikace
| Funkce | Specifikace |
|---|---|
| Výrobce | Cisco Small Business |
| Číslo modelu | SRW248G4P-K9-NA (SF300-48P) |
| UPC | 882658296284, 088021467286 |
| Rozměry produktu (DxŠxV) | 22.05 x 19.88 x 4.13 palce |
| Hmotnost položky | 16 libry |
| Počet portů | 48 x 10/100 PoE + Gigabit Uplinks |
| Typ rozhraní | RJ45 |
| Kompatibilní zařízení | Desktop, Network Devices |
| Datum první dostupnosti | 26. dubna 2011 |
8. Informace o záruce
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 webstránky. Uschovejte si prosím doklad o koupi pro případ reklamace.
9. Podpora
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).
Podpora Cisco Webmísto: https://www.cisco.com/c/en/us/support/index.html





