Cisco SF 300-48P (SRW248G4P-K9-EU) 48-Port Managed Ethernet PoE Switch, 2x Gigabit, 2x mini-GBIC Combo, 48 PoE Ports (375W), 300 Series

The Cisco SG 300-48P 48-Port Managed Ethernet PoE Switch is part of the Cisco Small Business line of network solutions, a portfolio of affordable managed switches that provides a reliable foundation for your business network. These Cisco SG 300-48P switches deliver the features you need to improve the availability of your critical business applications, protect your sensitive information, and optimise your network bandwidth to deliver information and applications more effectively. Easy to set up and use, the Cisco SG 300-48P 48-Port Switch provides the ideal combination of affordability and capabilities for small businesses, and helps you create a more efficient, better-connected workforce.

Key Features

• 48x 10/100 Fast Ethernet switched RJ-45 ports with auto medium dependent interface (MDI) and MDI crossover (MDI-X) cable detection� (Full Power over Ethernet PoE on all 48 Ports, Maximum power of 15.4W, Total 375W)
• 2x 10/100/1000 Gigabit Ethernet RJ-45 ports
• 2x mini Gigabit Interface Converter (mini-GBIC) slots for fiber and copper Gigabit Ethernet expansion (shared)
• Nonblocking, store-and-forward switching mechanism
• Simplified QoS management enabled by advanced queuing techniques using 802.1p, differentiated services (DiffServ), or type of service (ToS) prioritisation schemes enhances the performance of real-time applications such as voice and video
• Configuration and monitoring from a standard web browser with WebView management
• Secure remote management of the switch via Secure Shell (SSH) and SSL secure channel network protocols
• 802.1Q-based VLANs enable segmentation of networks for improved performance and security
• Private VLAN Edge (PVE) for simplified network isolation of guest connections or autonomous networks
• Automatic configuration of VLANs across multiple switches through Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)
• Automatic port configuration through auto MDI/MDIX and 802.1ab with Link Layer Discovery Protocol (LLDP) and Universal Plug and Play (UPnP) support
• User/network port-level security via 802.1X authentication and MAC-based filtering
• Increased bandwidth (up to 8x) and added link redundancy with Link Aggregation Control Protocol (LACP)
• Enhanced rate-limiting capabilities provide control, including back pressure to control the rate at which data can flow into and out of a port
• Multicasting, broadcasting, and flooding control
• Port mirroring for noninvasive monitoring of switch traffic
• Simple Network Management Protocol (SNMP) versions 1, 2c, and 3 and Remote Monitoring (RMON) support
• Fully rack mountable using the included rack-mounting hardware

High performance and reliability
All Cisco SG 300-48P 48-Port Ethernet Switches have been rigorously tested to deliver the high availability and performance you expect from a Cisco switch. The solutions speed up file transfer times and improve slow, sluggish networks, while keeping your vital business applications available and preventing costly downtime. As a managed switching solution, the Cisco SG 300-48P also gives you the flexibility to manage and prioritise high-bandwidth traffic such as voice. That means you can empower your employees with state-of-the-art communication and productivity solutions, without draining the performance of your other business applications.

Power over Ethernet
Cisco SG 300-48P Switches are available with up to�48 PoE ports of Gigabit Ethernet connectivity and offers a maximum power of 15.4W, and a total of 375W. This capability simplifies advanced technology deployments such as IP telephony, wireless, and IP surveillance by allowing you to connect and power network endpoints over a single Ethernet cable. With no need to install separate power supplies for IP phones or wireless access points, you can take advantage of advanced communications technologies more quickly, and at a lower cost.

Secure Desktop Connectivity
The Cisco SG 300-48P Switch can simply and securely connect employees working in small offices with each other and with all of the servers, printers, and other devices they use. High performance and reliable connectivity helps speed file transfers and data processing, improves network uptime, and keeps your employees connected and productive. Additionally, the Cisco SG 300-48P Switch provides a high level of security and give you fine-grained control to safeguard your network from unauthorised users. Advanced security features include:

• Embedded security to protect management data traveling to and from the switch and encrypt network
  communications
• Extensive access control lists (ACLs) to restrict sensitive portions of the network from unauthorised users
  and guard against network attacks
• Guest virtual LANs (VLANs) to let you provide Internet connectivity to nonemployee users while isolating
  critical business services from guest traffic
• Support for advanced network security applications such as IEEE 802.1X port security to tightly limit access
  to specific segments of your network

Unified Communications
As a managed network solution, the Cisco SG 300-48P Switch provides the performance and advanced traffic-handling intelligence you need to deliver all communications and data over a single network. Cisco offers a complete portfolio of IP telephony and other unified communications products designed for small businesses. Cisco SG 300-24 Switchs have been rigorously tested to help ensure easy integration and full compatibility with these and other products, providing a complete small business solution.

IP Telephony Support
Cisco SG 300-48P 48-Port PoE Switches include embedded QoS intelligence to prioritise delaysensitive services such as voice and video, simplify unified communications deployments, and help ensure consistent network performance for all services. For example, automated voice VLAN capabilities let you plug any IP phone (including third-party phones) into your IP telephony network and receive an immediate dial tone. The switch automatically configures the device with the right VLAN and QoS parameters to prioritise voice traffic.

Highly Secure Guest Connectivity
A Cisco SG 300-48P Switch let you extend highly secure network connectivity to guests in a variety of settings, such as a hotel, an office waiting room, or any other area open to nonemployee users. Using powerful but easy-to-configure security and traffic segmentation capabilities, you can isolate your vital business traffic from guest services and keep guests’ network sessions private from each other.

Optimal Energy Efficiency
The Cisco SG 300-48P Switch is designed with a variety of power-saving features across all models, providing the industry’s broadest portfolio of “green” switches. These Cisco SG 300-48P Switches optimise power use to protect the environment and reduce energy costs, without compromising performance. Powersaving features include:

• The latest application-specific integrated circuits (ASICs), using low-power 65-nanometer technology (these
  chipsets allow for lower power consumption and thinner, more efficient designs)
• Embedded intelligence to adjust signal strength based on cable length
• Fanless design in most models, which reduces power consumption, increases reliability, and provides quieter operation

Ports

• 48 10/100�Ethernet RJ45
• 2x 10/100/1000�Gigabit Ethernet RJ45
• 2x RJ45/SFP Combo Ports

Power over Ethernet (PoE)

• Maximum power of 15.4W to any Gigabit Ethernet base port. Total power 375W

Security

• Secure Shell (SSH) Protocol
  • SSH secures Telnet traffic to and from the switch
• Secure Sockets Layer
  • (SSL) SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based managemen GUI in the switch
• IEEE 802.1X (Authenticator role)
  • 802.1X: RADIUS authentication and accounting, MD5 hash; guest VLAN; unauthenticated VLAN,
  • single/multiple host mode and single/multiple sessions
  • Supports time-based 802.1X
  • Dynamic VLAN assignment
• Layer 3 isolation
  • Allow/disallow routing between IP subnets or directly connected IP networks
• Layer 2 isolation Private VLAN Edge (PVE) with community VLAN
  • PVE (also known as protected ports) provides Layer 2 isolation between devices in the same VLAN, supports multiple uplinks
• Port security
  • Locks MAC addresses to ports, and limits the number of learned MAC addresses
• RADIUS/TACACS+
  • Supports RADIUS and TACACS authentication. Switch functions as a client
• Storm control
  • Broadcast, multicast, and unknown unicast
• DoS prevention
  • DoS attack prevention
• Congestion avoidance
  • A TCP congestion avoidance algorithm is required to minimize and prevent global
  • CP loss synchronisation.
• ACLs
  • Support for up to 512 rules
  • Drop or rate limit based on source and destination MAC, VLAN ID or IP address, protocol, port, differentiated services code point (DSCP)/IP precedence, TCP/ UDP source and destination ports, 802.1ppriority, Ethernet type, Internet Control Message Protocol (ICMP) packets, IGMP packets, TCP flag

Quality of Service

• Priority levels
  • 4 hardware queues
• Scheduling
  • Strict priority and weighted round-robin (WRR) Queue assignment based on DSCP and class of service (802.1p/CoS)
• Class of service
  • Port based; 802.1p VLAN priority based; IPv4/v6 IP precedence/type of service (ToS)/DSCP based;
    Differentiated Services (DiffServ); classification and re-marking ACLs, trusted QoS
• Rate limiting
  • Ingress policer; egress shaping and rate control; per VLAN, per port, and flow based

Firmware upgrade

• Web browser upgrade (HTTP/HTTPS) and TFTP
• Upgrade can be initiated through console port as well
• Dual images for resilient firmware upgrades

Port mirroring

• Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. up to 8 source ports can be mirrored to one destination port. A single session is supported.

VLAN mirroring

• Traffic from a VLAN can be mirrored to a port for analysis with a network analyser or RMON probe. Up to 8 source VLANs can be mirrored to one destination port. A single session is supported.

DHCP (Options 66, 67, 82, 129, and 150)

• DHCP Options facilitate tighter control from a central point (DHCP server) to obtain IP address, autoconfiguration
• (with configuration file download), and DHCP relay,

Text-editable config files

• Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deployment

Smartports

• Simplified configuration of QoS and security capabilities

Secure copy

• Securely transfer files to and from the switch

Textview CLI

• Scriptable command-line interface

Cloud services

• Support for Small Business Toolbar application

Other management Traceroute

• Single IP management; HTTP/HTTPS; SSH; RADIUS; port mirroring; TFTP upgrade; DHCP client; BOOTP; SNTP; Xmodem upgrade; cable diagnostics; ping; syslog; Telnet client (SSH secure support)

Power Efficiency

• Energy Detect Automatically turns off power off on Gigabit Ethernet RJ-45 port when detecting link down
• Active mode is resumed without loss of any packets when the switch detects the link up
• Cable length detection Adjusts the signal strength based on the cable length. Reduces the power consumption for cables shorter than 10m.

General

• Jumbo frames Frame sizes up to 10 KB supported on 10/100 and Gigabit interfaces
• MAC table Up to 8000 MAC addresses
• Discovery
  • Bonjour The switch advertises itself using the Bonjour protocol.
  • Link Layer Discovery Protocol (LLDP) (802.1ab) with LLDP-MED extensions: LLDP allows the switch to advertise its identification, configuration, and capabilities to neighboring devices that store the data in a MIB. LLDP-MED is an enhancement to LLDP that adds the extensions needed for IP phones.
  • Cisco Discovery Protocol* The switch advertises itself using the Cisco Discovery Protocol.

Buttons

• Reset button

Cabling Type

• Unshielded twisted pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5 Ethernet or better for 1000BASE-T

LEDs

• System, Link/Act, PoE, Speed

Flash

• 16 MB

CPU memory

• 128 MB

Packet Buffer

• 4MB

Dimensions (W x H x D)

• 17.3 x 1.45 x 13.78 in. (440 x 44.45 x 350 mm)

Unit weight

• 12.94 lb (5.87 kg)

Power

• Power saving mode: Energy Detect
  Maximum Consumption 110V = 473.5W / 220V = 456.8W
• Heat Dissapation (BTU/hr) 1615.6
• Power Supply: 100–240V 47–63 Hz, internal, universal

Certification

• UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A

Environmental

• Operating temperature 32° to 104°F (0° to 40°C)
• Storage temperature –4° to 158°F (–20° to 70°C)
• Operating humidity 10% to 90%, relative, noncondensing
• Storage humidity 10% to 90%, relative, noncondensing

• ดูรายละเอียด & รูปภาพเพิ่มเติม ของสินค้าจากผู้ผลิต

• รับประกันสินค้า นาน 1 ปี พร้อมศูนย์บริการ ของ cisco thailand ทั่วประเทศ
• ราคาสินค้า ได้รวมภาษีมูลค่าเพิ่ม 7%