Máy Chủ – Server
Máy Trạm – Workstation
Linh Kiện Server
Thiết Bị Mạng
Thiết Bị Lưu Trữ – Storage
Phần Mềm Bản Quyền
26-Port Gigabit PoE Smart Switch CISCO SG250-26P-K9-EU
– 24 10/100/1000 PoE+ ports with 195W power budget + 2 Gigabit copper/SFP combo ports.
– Performance: Switching capacity 52 Gbps, Forwarding rate 38.69 mpps wire-speed performance.
– Layer 2: Port grouping up to 4 groups, up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation.
– Layer 3: 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, Classless Interdomain Routing (CIDR) Support for CIDR.
– PoE: PoE Power Budget: 195 W, Number of Ports That Support PoE: 24.
– QoS (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).
SPECIFICATIONS
| Model | SG250-26P-K9-EU |
| Performance | |
| Switching capacity and forwarding rate | Capacity in Millions of Packets per Second (mpps) (64-byte packets): 38.69 Switching Capacity in Gigabits per Second (Gbps): 52 |
| 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 | 26 Gigabit Ethernet |
| RJ-45 ports | 24 Gigabit Ethernet |
| Uplink ports | 2 Gigabit Ethernet combo |
| 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: 195 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 | 3.81 kg |
| Power | 100 to 240V 50 to 60 Hz, internal, universal |
Đánh giá
Chưa có đánh giá nào.