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Thương hiệu:

Switch Cisco SF250-24-K9-EU

  • Thương Hiệu: Cisco
  • Mã: SF250-24-K9-EU
  • Port : 24-Port 10/100 Smart Switch + 2 Gigabit Ethernet combo + 2 SFP

Giá: Liên hệ

Thông Số Kỹ Thuật Switch 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)
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