28-Port Gigabit PoE Smart Switch CISCO SG220-28MP-K9-EU
- 24 10/100/1000 PoE+ ports with 375 W power budget 4 Gigabit SFP port.
- Forwarding rate in millions of packets per second (mpps; 64-byte packets): 41.67mpps.
- Switching capacity in Gigabits per second: 56.
- Flash: 32 MB.
- CPU memory: 128 MB.
- Dimensions (W x H x D): 440 x 44 x 250 mm.
Đặc tính kỹ thuật
| Performance | |
| Switching Capacity | Forwarding rate in millions of packets per second (mpps; 64-byte packets): 41.67 |
| Switching capacity in Gigabits per second: 56 | |
| Layer 2 switching | |
| MAC table | Up to 8,192 MAC addresses |
| Spanning Tree Protocol (STP) | Standard 802.1d Spanning Tree support, enabled by default Fast convergence using 802.1w (Rapid Spanning Tree [RSTP]) Multiple Spanning Tree instances using 802.1s (MSTP) 16 instances are supported |
| Port grouping | Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP) - Up to 8 groups - Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation Load balance based on source and destination MAC address, or source and destination MAC/IP |
| VLAN | Support for up to 256 VLANs simultaneously Port-based and 802.1Q tag-based VLANs Management VLAN Guest VLAN |
| Auto voice VLAN | VLANs transparently cross a service provider network while isolating traffic among customers |
| Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP) | Protocols for automatically propagating and configuring VLANs in a bridged domain |
| Head-Of-Line (HOL) blocking | HOL blocking prevention |
| Jumbo frame | Frame sizes up to 9,216 supported |
| Loopback detection | 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 |
| Automatic Media-Dependent Interface Crossover (MDIX) | Automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed |
| Security | |
| ACLs | Drop or rate limit based on source and destination MAC, VLAN ID or IP address, protocol, port, Differentiated Services Code Point (DSCP)/IP precedence, TCP/UDP source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP) packets, IGMP packets, TCP flag Support up to 512 rules |
| Port security | Creates the ability to lock source MAC addresses to ports; limits the number of learned MAC addresses |
| IEEE 802.1X (authenticator role) | 802.1X: RADIUS authentication; guest VLAN; Single-host, multiple-host, and multisession mode |
| RADIUS, TACACS+ | Supports RADIUS and TACACS authentication; switch functions as a client |
| MAC address filtering | Supported |
| Storm control | Broadcast, multicast, and unknown unicast |
| DoS protection | DOS attack prevention |
| STP Bridge Protocol Data Unit (BPDU) Guard | This security mechanism protects the network from invalid configurations. A port enabled for BPDU Guard is shut down if a BPDU message is received on that port |
| Spanning Tree Loop Guard | This feature provides additional protection against Layer 2 forwarding loops (STP loops) |
| Secure Shell (SSH) Protocol | SSH is a secure replacement for Telnet traffic. SCP also uses SSH. SSH v1 and v2 are supported |
| Secure Sockets Layer (SSL) | SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch |
| QoS | |
| Priority levels | 8 hardware queues per port |
| 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), and 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 |
| Multicast | |
| Internet Group Management Protocol (IGMP) Versions 1, 2, and 3 Snooping | IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups |
| IGMP querier | IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router |
| 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. - PoE Power Budget: 375 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 |
| Hardware specifications | |
| Buttons | Reset button |
| Cabling type | Unshielded Twisted Pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5 Ethernet or better for 1000BASE-T |
| LEDs | System, Link/Act, Speed |
| Flash | 32 MB |
| CPU memory | 128 MB |
| Ports | - Total system ports: 28 Gigabit Ethernet - RJ-45 ports: 24 Gigabit Ethernet - Uplink ports: 4 Gigabit Ethernet SFP |
| Packet Buffer | 4.1 Mb |
| Environmental | |
| Dimensions (W x H x D) | 440 x 44 x 250 mm |
| Unit weight | 4.26 kg |
| Power | 100-240 V, 50-60 Hz, Internal |
| Certifications | UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A, C-tick |
| Operating temperature | 0-50°C |
| Storage temperature | -20° C to +70° C |
| Operating humidity | 10% to 90%, relative, noncondensing |
| Storage humidity | 10% to 90%, relative, noncondensing |
- Bảo hành: 12 tháng.
