Cisco SG250-18 | Switch | 16x 1000Mb/s, 2x 1Gb/s Combo, Managed

CODE: SG250-18-K9-EU / EAN: 0882658994678

Cisco SG250-18 | Switch | 16x 1000Mb/s, 2x 1Gb/s Combo, Managed

CODE: SG250-18-K9-EU / EAN: 0882658994678
104,42 EUR without VAT (net)
Out of stock
10G support: No
AC input frequency: 50 - 60
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Cisco SG250-18 - 18-port Gigabit switch

The SG250-18 switch is equipped with 16 1000 Mb/s ports and 2 Gigabit Combo (RJ45/SFP) ports. There are several ways of managing and configuring the device, including g>graphic Web interface and CLI text console.

Quiet operation and high performance

The switch has a bandwidth of 26.78 million packets per second (64-byte packets) and a switching capacity of 36 Gb/s. The switch has no fans, so it works very quietly.

Cisco 250 series - smart switches

Cisco 250 Series is the next generation of smart and affordable switches that guarantee high network performance and reliability. They are equipped with a wide range of network features needed to configure a stable business network. These powerful Fast or Gigabit Ethernet switches with 1000 Mbps or 10 Gb>Ethernet ports offer several management options, advanced security features, customized service quality (QoS) and layer 3 static routing. These features far outperform ordinary unmanageable switches, while providing lower costs compared to fully managed switches. Power over Ethernet Plus (PoE+), easy to use GUI, Smart Network Application allows you to create and configure a complete and efficient computer network.

Business applications

Whether you need basic high-speed connectivity to computers and servers or a comprehensive voice or wireless data solution, the Cisco 250 Series switches can meet your needs, and possible deployment scenarios are:

Fast connectivity to computers - Cisco 250 series switches enable fast and secure connection of computers, printers, servers with other devices. High performance and reliable connectivity help to speed up file transfer and data processing, extend network operation time, which in turn also increases the level of employee performance.
Flexible wireless - To increase network coverage, the Cisco 250-series switches work with Cisco wireless solutions as well as those of other manufacturers. With security features, Power over Ethernet (PoE) power, VLAN and QoS features, they provide an excellent basis for creating an efficient yet highly secure network. The ability to power devices through PoE with up to 30 watts per port via Ethernet cable means that innovative 802.11ac wireless technology can easily be deployed to maximize network throughput.
Uniform communication - The Cisco 250 series offers QoS features that enable you to prioritize delay-sensitive traffic on your network and connect all communication solutions such as IP telephony and video surveillance to a single Ethernet network. Cisco offers a full range of IP telephony and other communication products for small businesses that have been thought through, designed and adapted to the needs of small business. The Cisco 250 series switches have been rigorously tested to ensure easy integration and full compatibility with other manufacturer's devices.

Using the 250 series - features and benefits

  • Easy configuration and management
  • Reliability and performance
  • Static layer 3 routing
  • Power over Ethernet Plus (PoE+)
  • Power supply to switches via PoE and PoE pass-through
  • Network security
  • IPv6 support
  • Support for IP telephony
  • Energy-saving solutions
  • Cisco Limited Lifetime Warranty
  • World-class support


Features / filters
LAN standard Gigabit Ethernet 10/100/1000 Mb/s
Number of LAN ports 16x [10/100/1000M (RJ45)] , 2x [1G Combo (RJ45/SFP)] ,
10G support No
AC input frequency 50 - 60
AC input voltage 100 - 240
Access Control List (ACL) Yes
Access Control List (ACL) rules 512
Basic switching RJ-45 Ethernet ports quantity 16
Basic switching RJ-45 Ethernet ports type Gigabit Ethernet (10/100/1000)
Broadcast storm control Yes
Built-in processor Yes
Certification UL 60950, FCC 15 A, CSA 22.2
Combo SFP ports quantity 2
Copper ethernet cabling technology 10BASE-T,10GBASE-T,100BASE-TX,1000BASE-T
Depth 220
DHCP features DHCP server,DHCP relay
DoS attack prevention Yes
Firmware upgradeable Yes
Flash memory 256
Form factor 1U
Forwarding rate 26.78
GARP VLAN Registration Protocol (GVRP) Yes
Gigabit Ethernet (copper) ports quantity 16
Harmonized System (HS) code 85176990
Head-of-line (HOL) blocking Yes
Heat dissipation 44.7
Height 44
IGMP snooping Yes
Internal memory 512
IPv4 & IPv6 features Dual stack IPv4/IPv6
Jumbo frames 9000
Jumbo frames support Yes
LED indicators Yes
Link aggregation Yes
Loop protection Yes
MAC address table 8000
Management CLI - Command Line Interface, By web browser,
Mean time between failures (MTBF) 1425277
Networking standards IEEE 802.1D,IEEE 802.1Q,IEEE 802.1p,IEEE 802.1s,IEEE 802.1w,IEEE 802.1x,IEEE 802.3,IEEE 802.3ab,IEEE 802.3ad,IEEE 802.3af,IEEE 802.3at,IEEE 802.3az,IEEE 802.3u,IEEE 802.3x,IEEE 802.3z
Number of queues 8
Number of VLANs 255
Numbers of pieces in the package 1-pack
Operating relative humidity (H-H) 10 - 90
Operating temperature (T-T) 0 - 50
Packet buffer memory 12
Plug and Play Yes
Port mirroring Yes
Power (W) Without PoE
Power consumption (max) 13.1
Power over Ethernet (PoE) No
Power supply included Yes
Processor frequency 800
Product colour Black
Quality of Service (QoS) support Yes
Queue scheduling algorithms Weighted Round Robin (WRR)
Quick start guide Yes
Rack mount kit Yes
Rack mounting Yes
Rate limiting Yes
Reset button Yes
Security algorithms 802.1x RADIUS,HTTPS,SSH,SSL/TLS
Spanning tree protocol Yes
SSH/SSL support Yes
Storage relative humidity (H-H) 10 - 90
Storage temperature (T-T) -20 - 70
Switch layer L2/L3
Switch type Managed
Switching capacity 36
Switching layer 2+
System event log Yes
Type of case Rack (1U)
USB 2.0 ports quantity 1
Virtual LAN features Stacked VLAN,Voice VLAN,Protocol-based VLAN
VLAN support Yes
Web-based management Yes
Width 440

Technical data - model SG250-18

802.3at PoE+ and 802.3af PoE No PoE support
Number of ports supporting PoE None
PoE/PoE+ No PoE power supply
Power dedicated to PoE -
Energy consumption (max.)
Green power EEE, Energy Detect, Short Reach
Energy consumption of the system 13.0 W
Energy consumption (with PoE) -
Heat distribution (BTU/hr) 44.70
Physical ports
Total number of ports 18 x Gigabit Ethernet
Ports RJ-45 16 x Gigabit Ethernet
Combo ports (RJ-45 + SFP) 2 x Gigabit Ethernet Combo
Other product specifications
Buttons Reset button
Cabling UTP category 5 or higher for 10BASE-T/100BASE-TX
UTP category 5e or higher for 1000BASE-T
Flash Memory 256 MB
CPU memory 512 MB
Package buffer 12 Mb
Physical characteristics
Dimensions 440 mm x 44 mm x 202 mm
Power supply Input 100 to 240 V, 50 to 60 Hz, built-in
Ambient temperature during operation 0°C to 50°C
Storage temperature -20°C to 70°C
Weight 2.08 kg
Ambient humidity during operation 10% to 90%, relative, non-condensing
Certificates UL (UL 60950), CSA (CSA 22.2), CE, FCC Part 15 (CFR 47) Class A
Humidity during storage 10% to 90%, relative, non-condensing
Noise level and average time between failures (MTBF)
Fan (quantity) None
Noise level -
MTBF at 50°C (in hours) 1425277
Guarantee period Limited, lifelong
Package contents Cisco 250 series smart switch
Power cable (power supply for 8-port and 10-port units)
Mounting kit
Brief instruction manual
USB connector USB Type A socket on the front panel of the switch makes it easy to manage files and images
Capacity in millions of packets per second (mpps), 64-byte packets 26.78
Switching capacity in gigabits per second (Gbps) 36.0
Switching layer 2
Spanning Tree Protocol (STP) Support for 802.1d spanning tree
Default 802.1w enabled (Rapid Spanning Tree [RSTP])
Multiple instances of Spanning Tree using 802.1s (MSTP)
8 instances are supported
Port grouping/link aggregation 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 aggregated dynamic link 802.3ad LAG
VLAN Supports up to 256 active VLANs simultaneously
VLANs based on ports and tags 802.1Q
VLAN network management
Guest VLAN
Voice VLAN Voice data is automatically assigned to a voice specific VLAN and processed using appropriate QoS rules.
Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP) Protocols for automatic expansion and configuration of VLANs in a bridged domain
IGMP (versions 1, 2 and 3) snooping IGMP limits high-bandwidth multicast traffic to requesters only; supports up to 4K multicast groups (Source-specific multicast SSM is also supported)
IGMP querier Querier IGMP is used to operate the Layer 2 snooping switches multicast domain in the absence of a multicast router
Head-Of-Line (HOL) blocking Prevention of HOL blockades
Feedback loop detection Feedback loop detection provides loop protection by transmitting loop protocol packets from ports where loop protection has been enabled
It works independently of STP
Layer 3 Routing
Routing IPv4 IPv4 packet forwarding at Internet connection speed
Up to 32 static routes and up to 16 IP interfaces
Routing IPv6 IPv6 packet forwarding at Internet connection speed
Layer 3 interface Layer 3 interface configuration on physical port, LGD, VLAN or loopback interface
Classless Interdomain Routing CIDR Support for CIDR
DHCP relay on layer 3 Transmission of DHCP traffic between IP domains
UDP relay Transmission between layer 3 domains to detect the use or transmission of bootP/DHCP packets
SSL Secure Sockets Layer (SSL) encrypts all HTTPS traffic, allowing secure access to a browser-based graphical management interface
Secure Shell Protocol (SSH) SSH is a secure replacement for Telnet connections
Secure Copy (SCP) also uses SSH
SSH v1 and v2 are supported
IEEE 802.1X (authorization function) RADIUS authentication, guest VLAN, single/multiple host mode and single/multiple sessions
Secure Core Technology (SCT) The switch will receive and manage processes and protocol traffic regardless of the amount of traffic received
Secure Sensitive Data (SSD) Mechanism to manage sensitive data (such as passwords, keys, etc.) and securely place it in the switch, deliver it to other devices and securely auto-configure it
Access to view confidential data in plain text or encrypted text is provided according to the user configured access level and user access method
Port security Possibility to block sources of MAC addresses to ports and limit the number of known MAC addresses
RADIUS Supports RADIUS authentication for management access
The switch acts as a customer
Storm protection Transmission, multicast and unknown unicast
Prevention of DoS Prevention of Denial-of-Service (DoS) attacks
Access Control Lists (ACLs) Packet rejection and delimitation based on source and destination MAC, VLAN ID or IP address, protocol, port , Differentiated Services Code Point (DSCP)/IP precedence, source and destination ports TCP/UDP, 802.1p priorities, Ethernet type, ICMP packets, IGMP packets
Support for up to 512 rules
STP feedback protection Provides additional protection against layer 2 transmission loops (STP loops)
Quality of Service
Priority levels 8 queues
Planning Strict priority and Weighted Round-Robin (WRR) based on DSCP and service class (802.1p/CoS)
Class of service Port based; 802.1p based on VLAN priority; IPv4/v6 priority, service type (ToS) and DSCP based; DiffServed services; ACL classification and recharging, trusted QoS
Limitation of transmission speed Ingress policer; outbound bandwidth limiting and bandwidth control; VLAN-based, port-based and flow-based
Avoiding congestion TCP congestion avoidance algorithm is required to limit and prevent losses of global TCP synchronisation
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, IEEE 802.1w RSTP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE 802.3af, IEEE 802.3at, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC 813, RFC 879, RFC 896, RFC 826, RFC 854, RFC 855, RFC 856, RFC 858, RFC 894, RFC 919, RFC 920, RFC 922, RFC 950, RFC 951, RFC 1042, RFC 1071, RFC 1123, RFC 1141, RFC 1155, RFC 1157, RFC 1213, RFC 1215, RFC 1286, RFC 1350, RFC 1442, RFC 1451, RFC 1493, RFC 1533, RFC 1541, RFC 1542, RFC 1573, RFC 1624, RFC 1643, RFC 1700, RFC 1757, RFC 1867, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2030, RFC 2131, RFC 2132, RFC 2233, RFC 2576, RFC 2616, RFC 2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863, RFC 3164, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 3416, RFC 4330
IPv6 IPv6 host mode
IPv6 via Ethernet
Dual IPv6/IPv4 stack
IPv6 neighbor and Router Discovery (ND)
Automatic configuration of the IPv6 address
MTU (Path Maximum Transmission Unit) detection
Duplicate address detection (DAD)
Internet Control Message Protocol (ICMP) version 6
IPv6 via IPv4 with support for Intrasite Automatic Tunnel Addressing Protocol (ISATAP)
Gold certificate USGv6 and IPv6 logo
IPv6 QoS Prioritization of IPv6 packets
IPv6 ACL Packet rejection or IPv6 speed limiter
Multicast Listener Discovery (MLD v1/2) snooping Delivering IPv6 multicast packets only to selected receivers
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
User interface Built-in switch configuration tool for easy configuration of devices in the browser (HTTP/HTTPS). Supports configuration, system desktop, system maintenance and monitoring. Basic and advanced mode for maximum performance.
Smart Network Application (SNA) An innovative network level monitoring and management tool built into the Cisco 250 to 550X series switches. It allows you to detect network topology, display link status, monitor events, configure, update software images using multiple switches on the network.
SNMP SNMP versions 1, 2c and 3 with SNMP Traps support and version
SNMP 3 based on the User Security Model (USM)
Remote monitoring (RMON) The built-in RMON program supports 4 RMON groups (history, statistics, alarms and events) for monitoring, analysis and better traffic management
Dual IPv4 and IPv6 stack Coexistence of both piles of protocols to facilitate migration
Firmware update Web browser update (HTTP/HTTPS) and Trivial File Transfer Protocol (TFTP)
Dual images for flexible firmware updates
Port cloning Traffic at a port can be reflected in another port for analysis using a network analyser or RMON probe
Up to 4 source ports can be mirrored to one destination port
VLAN mirroring Traffic from a VLAN can be reflected in another port for analysis using a network analyser or RMON probe
Up to 4 source VLANs can be mirrored to one destination port
DHCP (options 12, 66, 67, 82, 129 and 150) DHCP options allow tighter control from a central point (DHCP server) to obtain the IP address, auto-configuration (with download of configuration file), DHCP relay and host name
Secure copy (SCP) Safely transfers files to and from the switch
Auto-configuration with SCP file download Enables mass deployment with protection of sensitive data
Text-based configuration files Configuration files can be edited with a text editor and downloaded to another switch to facilitate mass deployment
Smartports Simplified configuration of QoS and safety functions
Auto Smartports Automatically applies intelligence delivered through Smartports roles to the port based on devices detected by Cisco Discovery Protocol or LLDP-MED
Command-Line Interface (CLI) Scriptable CLI
Full CLI is supported, as well as menu-based CLI
Supported user rights levels 1, 7 and 15 for CLI
Cloud services Support for Cisco FindIT Network Manager and Cisco Active Advisor
Built-in FindIT network probe Support for the built-in FindIT Network Probe operating on the switch
Eliminates the need to configure separate hardware or virtual machine for FindIT Network Probe on site
Agent Cisco Network Plug and Play (PnP) The Cisco Network Plug and Play solution provides a simple, secure, consistent and integrated offer to facilitate the introduction of new branches or campus equipment or the delivery of updates to the existing network.
The solution provides a consistent approach to delivering Cisco routers, switches and wireless devices with near-zero touch
Energy efficiency
Other forms of management Traceroute; single IP management; HTTP/HTTPS; RADIUS; port mirroring; TFTP update; DHCP client; Simple Network Time Protocol (SNTP); cable diagnostics; Ping; syslog; Telnet client (SSH support); automatic time settings from Management Station
Detection of energy consumption Automatically turns off the power to the RJ-45 port when a missing connection is detected
Active mode is resumed without packet loss when the switch detects that the link is active
Cable length detection Adjusts signal strength according to cable length, reduces power consumption for shorter cables
Compliance with the requirements of EEE 802.3az Supports IEEE 802.3az on all RJ45 Gigabit Ethernet ports
LED switch-off for ports LEDs can be manually switched off to save energy
Temporary use of the port Lifting or deactivating the port based on a user-defined schedule
Temporary PoE PoE power can be switched on or off based on a user-defined schedule to save energy
Frame sizes and MAC addresses
Jumbo frames Frame sizes up to 9K bytes
The default MTU is 2K bytes
MAC Table Up to 8000 addresses
Bonjour Bonjour protocol support
Connection Layer Detection Protocol (LLDP) (802.1ab) with LLDP-MED extensions LLDP allows the switch to broadcast its identification, configuration and capabilities to adjacent devices that store data in MIB
LLDP-MED is an LLDP extension that adds extensions needed for IP phones
Cisco Discovery Protocol The switch is broadcast via the Cisco Discovery Protocol
View brief information about connected Cisco network devices, IP phones and wireless access points



Datasheet for Cisco 250 series (ENG) products Download
Administration Guide (ENG) Download
Brief instruction manual (ENG) Download
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