Thiết Bị Mạng Cisco SF250-24P-K9-EU được thiết kế để phù hợp ở cả 3 lớp mạng. Switch Cisco SF250-24P-K9-EU cung cấp 24 10/100 PoE+ ports with 185W power budget, 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 SF250-24P-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 SF250-24P-K9-EU:
| Model | SF250-24P-K9-EU |
| Performance | |
| Switching capacity and forwarding rate | Capacity in Millions of Packets per Second (mpps) (64-byte packets): 9.52 Switching Capacity in Gigabits per Second (Gbps): 12.8 |
| Jumbo frames | Frame sizes up to 10 KB supported on 10/100 and Gigabit Ethernet interfaces (9 KB for SG200-08 and SG200-08P) |
| MAC table | Up to 8,000 MAC addresses |
| Total system ports | 24 Fast Ethernet + 4 Gigabit Ethernet |
| RJ-45 ports | 24 Fast Ethernet |
| Uplink ports | 2 Gigabit Ethernet combo + 2 SFP |
| Layer 2 Switching | |
| Spanning Tree Protocol (STP) | Standard 802.1d STP support Fast convergence using 802.1w (Rapid Spanning Tree [RSTP]), enabled by default |
| Port grouping | Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP): Up to 4 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). 16 VLANs supported in SG200-08 and SG200-08P Port-based and 802.1Q tag-based VLANs |
| Voice VLAN | Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS |
| Internet Group Management Protocol (IGMP) versions 1 and 2 snooping | IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups (16 for SG200-08 and SG200-08P) |
| Head-of-line (HOL) blocking | HOL blocking prevention |
| Security | |
| IEEE 802.1X (Authenticator role) | 802.1X: RADIUS authentication, MD5 hash |
| Port security | Locks MAC addresses to ports, and limits the number of learned MAC addresses |
| Storm control | Broadcast, multicast, and unknown unicast |
| DoS prevention | DoS attack prevention |
Quality of Service |
|
| Priority levels | 4 hardware queues |
| Scheduling | Strict priority and weighted round-robin (WRR) Queue assignment based on differentiated services code point (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) |
| Rate limiting | Ingress policer, per VLAN and per port |
| Power over Ethernet | |
| 802.3af PoE or 802.3at PoE+ delivered over any of the RJ-45 network ports within the listed power budgets | Switches support 802.3af, 802.3at, and Cisco pre-standard (legacy) PoE with maximum power of 30 W per port. This applies to the following PoE-enabled models; the maximum number of ports providing PoE power simultaneously is determined by the total PoE budget for the switch listed as below: PoE Power Budget: 185 W Number of Ports That Support PoE: 24 |
| Pre-standard PoE | Support Cisco Pre-Standard PoE |
| Intelligent PoE power management | Support the granular power negotiation with CDP/LLDP communication with PD devices after IEEE classification |
| Environmental | |
| Dimensions (W x H x D) | 440 x 44 x 257 mm |
| Unit weight | 4.1 kg |
| Power | 100 to 240V 50 to 60 Hz, internal, universal |
– Hãng sản xuất : Cisco
– Bảo hành: 12 tháng
