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Switch chia mạng Cisco 8Port 10/100Mbps – Cisco SF302-08

Giới thiệu chung

Switch chia mạng Cisco 8Port 10/100Mbps – Cisco SF302-08 là một thiết bị quan trọng dùng để kết nối các đoạn mạng với nhau theo mô hình mạng hình sao (Star). Theo mô hình này, switch đóng vai trò là thiết bị trung tâm, tất cả các máy tính đều được nối về đây trong một hệ thống mạng


Tính năng switch mạng Cisco 8Port 10/100Mbps – Cisco SF302-08
Product ID Number: SRW208G-K9
– 8port 10/100 + 2 Combo mini-GBIC ports.
– Performance: Switching capacity 5.6 Gbps, nonblocking, Capacity in Millions of Packets per Second (64-byte packets) 4.17 mpps.
– Layer 2: Port grouping up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation, Number of VLANs 256 active VLANs (4096 range), Head-of-line (HOL) blocking HOL blocking prevention.
– Layer 3: IPv4 routing Wirespeed routing of IPv4 packets, Up to 32 static routes and up to 32 IP interfaces, Classless Inter-Domain Routing (CIDR) support for CIDR.
– QoS: Priority levels 4 : hardware queues, Scheduling: Priority queuing and weighted round-robin (WRR), Queue assignment based on DSCP and class of service (802.1p/CoS).

Cisco 8Port 10/100Mbps – Cisco SF302-08 hiệu suất cao và sử dụng công nghệ tiên tiến

– Hỗ trợ cho các công nghệ tiên tiến: Tất cả các thiết bị chuyển mạch Cisco bao gồm các tính năng giao thông xử lý tiên tiến để giữ cho các ứng dụng chạy ở hiệu suất cao điểm.

. Tích hợp QoS thông minh trên tất cả các mô hình tự động ưu tiên dịch vụ chậm trễ nhạy cảm như thoại hoặc video để cải thiện hiệu suất mạng.

. Fast store-and-forward switching xác định các gói tin bị hư hỏng và ngăn ngừa chúng khỏi bị truyền qua mạng. Tất cả những tính năng chạy tự động, không có quản lý hoặc cấu hình yêu cầu

Cisco 8Port 10/100Mbps – Cisco SF302-08 mang hiệu suất cao để chạy các ứng dụng viễn thông, bao gồm cả các dịch vụ video băng thông. Nâng cao công suất và hiệu suất truyền tải, cho phép bạn chuyển các tập tin lớn trong vài giây

Thông số kỹ thuật


Capacity in Mpps (64-byte packets): 4.17
Switching Capacity in Gbps: 5.6

Layer 2 Switching

Spanning Tree Protocol: Standard 802.1d Spanning Tree support
Fast convergence using 802.1w (Rapid Spanning Tree), enabled by default
Multiple Spanning Tree instances using 802.1s
Port Grouping: Support for IEEE 802.3ad Link Aggregation Control Protocol
– Up to 8 groups
– Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation
VLAN: Support for up to 256 VLANs simultaneously (out of 4096 VLAN IDs)
Port-based and 802.1Q tag-based VLANs
MAC-based VLAN
Management VLAN
Private VLAN Edge, also known as protected ports, with multiple uplinks
Guest VLAN
Unauthenticated VLAN
Voice VLAN: Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS
Q-in-Q VLAN: VLANs transparently cross a service provider network while isolating traffic among customers
Generic VLAN Registration Protocol/Generic Attribute Registration Protocol: Protocols for automatically propagating and configuring VLANs in a bridged domain
Dynamic Host Configuration Protocol Relay at Layer 2: Relay of DHCP traffic to DHCP server in different VLAN. Works with DHCP Option 82
Internet Group Management Protocol Versions 1, 2 and 3 snooping: IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups (source-specific multicasting is also supported)
IGMP Querier: IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router.
Head-of-Line (HOL) Blocking: HOL blocking prevention

Layer 3

IPv4 Routing: Wirespeed routing of IPv4 packets
Up to 32 static routes and up to 32 IP interfaces
Classless Inter-Domain Routing: Support for CIDR
DHCP Relay at Layer 3: Relay of DHCP traffic across IP domains
User Datagram Protocol Relay: Relay of broadcast information across Layer 3 domains for application discovery or relaying of BootP/DHCP packets


Secure Shell Protocol: SSH secures Telnet traffic to and from the switch; SSH v1 and v2 are supported
Secure Sockets Layer: SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch
IEEE 802.1X (Authenticator role): 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
STP Bridge Protocol Data Unit Guard: A security mechanism to protect the network from invalid configurations.
A port enabled for BPDU Guard is shut down if a BPDU message is received on that port
Secure Core Technology: Ensures that the switch will receive and process management and protocol traffic no matter how much traffic is received
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 TCP loss synchronization.
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/IP precedence, TCP/ UDP source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol packets, IGMP packets, TCP flag

Quality of Service

Priority Levels: 4 hardware queues
Scheduling: Strict priority and weighted round-robin
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/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


IPv6: IPv6 host mode
IPv6 over Ethernet
Dual IPv6/IPv4 stack
IPv6 neighbor and router discovery
IPv6 stateless address auto-configuration
Path maximum transmission unit discovery
Duplicate address detection
ICMP version 6
IPv6 over IPv4 network with Intra-Site Automatic Tunnel Addressing Protocol support
IPv6 QoS: Prioritize IPv6 packets in hardware
IPv6 ACL: Drop or rate limit IPv6 packets in hardware
Multicast Listener Discovery Snooping: Deliver IPv6 multicast packets only to the required receivers
IPv6 Applications: Web/SSL, Telnet server/SSH, ping, traceroute, Simple Network Time Protocol, Trivial File Transfer Protocol, SNMP, RADIUS, syslog, DNS client, protocol-based VLANs
IPv6 RFCs Supported: RFC 2463 – ICMP version 6
RFC 3513 – IPv6 address architecture
RFC 4291 – IPv6 addressing architecture
RFC 2460 – IPv6 specification
RFC 2461 – Neighbor discovery for IPv6
RFC 2462 – IPv6 stateless address auto-configuration
RFC 1981 – Path MTU discovery
RFC 4007 – IPv6 scoped address architecture
RFC 3484 – Default address selection mechanism
RFC 4214 – ISATAP tunneling
RFC 4293 – MIB IPv6: Textual conventions and general group
RFC 3595 – Textual conventions for IPv6 flow label


Web User Interface: Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports configuration, system dashboard, system maintenance and monitoring
SNMP: SNMP versions 1, 2c, and 3 with support for traps, and SNMP version 3 user-based security model
Remote Monitoring: Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms and events) for enhanced traffic management, monitoring and analysis
IPv4 and IPv6 Dual Stack: Coexistence of both protocol stacks to ease migration
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 analyzer or RMON probe. Up to 8 source VLANs can be mirrored to one destination port. A single session is supported
Dynamic Host Configuration Protocol (Options 66, 67, 82, 129 and 150): DHCP Options facilitate tighter control from a central point (DHCP server) to obtain IP address, auto-configuration (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
Auto Smartports: Applies the intelligence delivered through the Smartport roles and applies it automatically to the port based on the devices discovered over CDP or LLDP-MED. This facilitates zero touch deployments
Textview CLI: Scriptable command-line interface. A full CLI as well as a menu-based CLI is supported
Cloud Services: Support for Cisco Small Business FindIT Network Discovery Utility
Localization: Localization of GUI and documentation into multiple languages
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 10 m

General Features

Jumbo Frames: Frame sizes up to 10 KB supported on 10/100 and Gigabit interfaces
MAC Table: Up to 8000 MAC addresses


Bonjour: The switch advertises itself using the Bonjour protocol
Link Layer Discovery Protocol (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

Power Consumption

Power Savings Mode: Energy Detect
Power Consumption Worst Case: 110V=8.8W
Heat Dissipation (BTU/hr): 31.4


Total System Ports: 8 Fast Ethernet + 2 Gigabit Ethernet
RJ-45 Ports: 8 Fast Ethernet
Combo Ports (RJ-45 + SFP): 2 Gigabit Ethernet Combo 1


Reset button

Cabling Type

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


System, Link/Act, Speed


16 MB


128 MB memory

Packet Buffer Memory

4 MB

Power Supply

100-240V 47-63 Hz, internal, universal


@ 40°C (hours): 69,825


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


Web Browser: Mozilla Firefox version 2.5 or later; Microsoft Internet Explorer version 6 or later
Category 5 Ethernet network cable
TCP/IP, network adapter and network operating system (such as Microsoft Windows, Linux or Mac OS X) installed on each computer in the network

Dimensions (DxWxH)

6.7 x 11 x 1.45′ (170 x 279.4 x 36.83 mm)


2.6 lb (1.18 kg)
0/5 (0 Reviews)

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