Mô tả
50-Port Gigabit Smart Switch CISCO SG250-50-K9-EU
- 48 cổng 10/100/1000 + 2 cổng Gigabit đồng/SFP combo.
- Hiệu suất: Khả năng chuyển mạch 100 Gbps, Tốc độ chuyển tiếp 74.41 triệu gói mỗi giây (wire-speed performance).
- Layer 2: Gom cổng lên đến 4 nhóm, tối đa 8 cổng cho mỗi nhóm với 16 cổng ứng viên cho mỗi nhóm (dynamic) cho việc tổ hợp liên kết 802.3ad.
- Layer 3: Định tuyến IPv4: Chuyển mạch các gói tin IPv4 với tốc độ dây đến 32 tuyến tĩnh và lên đến 16 giao diện IP. Định tuyến IPv6: Chuyển mạch các gói tin IPv6 với tốc độ dây. Hỗ trợ CIDR (Classless Interdomain Routing).
- QoS (Chất lượng Dịch vụ): 8 hàng đợi phần cứng cho các mức ưu tiên, Lập lịch ưu tiên nghiêm ngặt và tròn robin có trọng số (WRR). Phân bổ hàng đợi dựa trên DSCP và lớp dịch vụ (802.1p/CoS).
Đặc tính kỹ thuật
Model | SG250-50-K9-EU |
Performance | |
Switching capacity and forwarding rate | Capacity in Millions of Packets per Second (mpps) (64-byte packets): 74.41 Switching Capacity in Gigabits per Second (Gbps): 100 |
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 | 50 Gigabit Ethernet |
RJ-45 ports | 48 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: 45 W Number of Ports That Support PoE: 8 |
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 | 2.94 kg |
Power | 100 to 240V 50 to 60 Hz, internal, universal |
– Bảo hành: 12 tháng.
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