Thiết Bị Mạng Cisco SF250-24-K9-EU được thiết kế để phù hợp ở cả 3 lớp mạng. Switch Cisco SF250-24-K9-EU cung cấp 24 10/100Mps, 2 Gigabit copper/SFP combo + 2 SFP ports cho các kết nối LAN tại các doanh nghiệp vừa và nhỏ.. Hỗ trợ rất nhiều tính năng hỗ trợ cho việc quản lý hạ tầng mạng như giao diện dễ sử dụng, có khả năng chia sẻ thông tin với các thiết bị Cisco khác trong hệ thống, SNMP, VLAN, STP,…. cùng với các tính năng bảo mật mạnh mẽ như ACL, TACACS+, Port security, ngăn chặn DoS…. đem lại cho người quản trị mạng những công cụ cần thiết để quản lý một hệ thống mạng.
Thiết bị mạng switch cisco SF250-24-K9-EU tự động chuyển chế độ cáp thẳng hoặc chéo (MDI/MDI-X). Các tính năng Address Learning and Aging, and Data Flow Control giúp tối ưu truyền dữ liệu. Thiết kế để bàn hoặc rack mount.
Thông số kỹ thuật Thiết Bị Mạng Cisco SF250-24-K9-EU:
| Performance | |
| Switching capacity and forwarding rate | Capacity in millions of packets per second (mpps) (64-byte packets): 9.52 |
| All switches are wire-speed and nonblocking | Switching capacity in gigabits per second (Gbps): 12.8 |
| Ports | |
| Total system ports | 24 Fast Ethernet + 4 Gigabit Ethernet |
| RJ-45 ports | 24 Fast Ethernet |
| Combo ports (RJ-45 + SFP) | 2 Gigabit Ethernet combo + 2 SFP |
| USB slot | USB Type-A slot on the front panel of the switch for easy file and image management |
| Buttons | Reset button |
| Cabling type | Unshielded Twisted Pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5e or better for 1000BASE-T |
| LEDs | System, Link/Act, PoE, Speed |
| Flash | 256 MB |
| CPU | 800 MHz ARM |
| CPU memory | 512 MB |
| Layer 2 switching | |
| Spanning Tree Protocol (STP) | Standard 802.1d spanning tree support Fast convergence using 802.1w (Rapid Spanning Tree Protocol [RSTP]), enabled by default Multiple spanning tree instances using 802.1s (MSTP); 8 instances are supported |
| VLAN | Support for up to 256 active VLANs simultaneously Port-based and 802.1Q tag-based VLANs Management VLAN Guest VLAN |
| Voice VLAN | Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Auto voice capabilities deliver networkwide zero-touch deployment of voice endpoints and call control devices |
| IGMP (versions 1, 2, and 3) snooping | Internet Group Management Protocol (IGMP) limits bandwidth-intensive multicast traffic to only the requesters; supports 4K multicast groups (source-specific multicasting is also supported) |
| HOL blocking | Head-Of-Line (HOL) blocking |
| Loopback detection | Provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STP |
Layer 3 routing |
|
| IPv4 routing | Wire-speed routing of IPv4 packets Up to 32 static routes and up to 16 IP interfaces |
| IPv6 routing | Wire-speed routing of IPv6 packets |
| Layer 3 interface | Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interface |
| Classless Interdomain Routing (CIDR) | Support for CIDR |
| DHCP relay at Layer 3 | Relay of DHCP traffic across IP domains |
| User Datagram Protocol (UDP) relay | Relay of broadcast information across Layer 3 domains for application discovery or relaying of bootP/DHCP packets |
| Security | |
| SSL | Secure Sockets Layer (SSL) encrypts all HTTPS traffic, allowing secure access to the browser-based management GUI in the switch |
| Secure Shell (SSH) Protocol | SSH is a secure replacement for Telnet traffic. Secure Copy (SCP) also uses SSH. SSH v1 and v2 are supported |
| IEEE 802.1X (authenticator role) | RADIUS authentication, guest VLAN, single/multiple host mode, and single/multiple sessions |
| Secure Core Technology (SCT) | Ensures that the switch will receive and process management and protocol traffic no matter how much traffic is received |
| Port security | Ability to lock source MAC addresses to ports and limit the number of learned MAC addresses |
| Storm control | Broadcast, multicast, and unknown unicast |
| DoS prevention | Denial-of-Service (DoS) attack prevention |
| STP loopback guard | Provides additional protection against Layer 2 forwarding loops (STP loops) |
Quality of service |
|
| Priority levels | 8 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 |
| Congestion avoidance | A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronization |
| Standards | |
| Standards | IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE 802.3ad Link Aggregation Control Protocol, IEEE 802.3z Gigabit Ethernet, IEEE 802.3x Flow Control, IEEE 802.3 ad LACP, IEEE 802.1D (STP), IEEE 802.1Q/p VLAN |
| IPv6 | |
| IPv6 QoS | Prioritize IPv6 packets in hardware |
| IPv6 ACL | Drop or rate limit IPv6 packets in hardware |
| IPv6 applications | Web/SSL, Telnet server/SSH, Ping, Traceroute, Simple Network Time Protocol (SNTP), Trivial File Transfer Protocol (TFTP), Simple Network Management Protocol (SNMP), Remote Authentication Dial-In User Service (RADIUS), Syslog, DNS client, DHCP client, DHCP autoconfig |
| Environmental | |
| Unit dimensions (W x H x D) | 440 x 44 x 202 mm (17.3 x 1.45 x 7.95 in) |
| Unit weight | 2.72 kg (6 lb) |
| Power | 100 to 240V, 50 to 60 Hz |
| Operating temperature | 32° to 122°F (0° to 50°C) |
– Bảo hành: 12 tháng
– Hãng sản xuất : Cisco
