9,250,000₫

Switch chia mạng Cisco 28Port 10/100/1000Mbps – Cisco SG300-28

9,250,000₫

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Miễn phí giao hàng đến 10km
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LIÊN HỆ VỚI NHÂN VIÊN KINH DOANH

Switch chia mạng Cisco 28Port 10/100/1000Mbps – Cisco SG300-28 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

Switch chia mạng Cisco 28Port 10/100/1000Mbps – Cisco SG300-28

Giới thiệu chung

Switch chia mạng Cisco 28Port 10/100/1000Mbps – Cisco SG300-28 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 28Port 10/100/1000Mbps – Cisco SG300-28
– Product ID Number: SRW2024-K9
– 26 10/100/1000Mbps ports; 2 Combo mini-GBIC ports.
– Gigabit Switching with Fiber Expansion and Browser Configurability
– Performance: Switching capacity 56.0 Gbps, nonblocking, Forwarding rate 41.67 mpps wire-speed performance.
– 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 28Port 10/100/1000Mbps – Cisco SG300-28 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 28Port 10/100/1000Mbps – Cisco SG300-28 mang hiệu suất mà 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

Performance	Capacity in Mpps (64-byte packets): 41.67
Performance	Switching Capacity in Gbps: 56
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
Security	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
Standards	IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE 802.3ad LACP, IEEE 802.3z Gigabit Ethernet, IEEE 802.3x Flow Control, IEEE 802.1D (STP, GARP, and GVRP),IEEE 802.1Q/p VLAN, IEEE 802.1w RSTP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE 802.3af, IEEE 802.3at, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC 813, RFC 879, RFC 896, RFC 826, RFC 854, RFC 855, RFC 856, RFC 858, RFC 894, RFC 919, RFC 2863, RFC 1157, RFC 1493, RFC 1215, RFC 3416
IPv6	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
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. It 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
General Features	MAC Table: Up to 8000 MAC addresses
Discovery	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
	Short Reach
	Power Consumption Worst Case: 110V=30.1W
	220V=30.3W
	Heat Dissipation (BTU/hr): 103.4
Ports	Total System Ports: 28 Gigabit Ethernet
	RJ-45 Ports: 26 Gigabit Ethernet
	Combo Ports (RJ-45 + SFP): 2 Gigabit Ethernet Combo
Buttons	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
LEDs	System, Link/Act, Speed
Flash	16 MB
CPU	128 MB memory
Packet Buffer Memory	4 MB
Power Supply	100-240V 47-63 Hz, internal, universal
MTBF	@ 40°C (hours): 179141
Certifications	UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A
Dimensions (DxWxH)	17.3 x 1.45 x 10.1′ (440 x 36.83 x 257 mm)