Cisco SG250X-24 Switch 24x 1000Mb/s 2x 10Gb/s 2x SFP+ Managed

Features / filters
LAN standard	Gigabit Ethernet 10/100/1000 Mb/s, 10 Gigabit Ethernet,
Number of LAN ports	24x [10/100/1000M (RJ45)] , 2x [1/10G (RJ45)] , 2x [10G (SFP+)] ,
Management	CLI - Command Line Interface, By web browser,
Numbers of pieces in the package	1-pack
Switching layer	2+
Type of case	Rack (1U)

Technical data - model SG250X-24

802.3at PoE+ and 802.3af PoE
Number of ports supporting PoE	None
Power dedicated to PoE	None
Energy consumption (max.)
Green power	EEE, Energy Detect, Short Reach
Energy consumption of the system	29.1 W
Energy consumption (with PoE)	None
Heat distribution (BTU/hr)	99.29
Physical ports
Total number of ports	24 x Gigabit Ethernet + 4 x 10 Gigabit Ethernet
Ports RJ-45	24 Gigabit Ethernet
Combo ports (RJ-45 + SFP)	2 x 10 Gigabit Ethernet + 2 x SFP+
Other product specifications
USB connector	USB Type A socket on the front panel of the switch makes it easy to manage files and images
Buttons	Reset button
Cabling	UTP category 5 or higher for 10BASE-T/100BASE-TX UTP category 5e or higher for 1000BASE-T
LEDs	System, Link/Act, PoE, Speed
Flash Memory	256 MB
CPU	800 MHz ARM
CPU memory	512 MB
Package buffer	12 Mb
Physical characteristics
Supported SFP/SFP+ modules	MGBBX1, MGBSX1, MGBLH1, MGBLX1, MGBT1, GLC-LH-SMD=, GLC-BX-U=, SFP-H10GB-CU1M, SFP-H10GB-CU3M, SFP-H10GB-CU5M, SFP-10G-SR, SFP-10G-LR, SFP-10G-SR-S, SFP-10G-LR-S
Dimensions	440 mm x 44 mm x 257 mm
Weight	2.66 kg
Power supply	Input 100 to 240 V 50 to 60 Hz, internal, integrated
Certificates	UL (UL 60950), CSA (CSA 22.2), CE, FCC Part 15 (CFR 47) Class A
Ambient temperature during operation	0°C to 50°C
Storage temperature	-20°C to 70°C
Ambient humidity during operation	10% to 90%, relative, non-condensing
Humidity during storage	10% to 90%, relative, non-condensing
Noise level and average time between failures (MTBF)
Fan (quantity)	1
Noise level	0°C to 30°C: 32.6 dB 50°C: 44.9 dB
MTBF at 50°C (in hours)	130255
Guarantee
Guarantee period	Limited, lifelong
Package
Package contents	Cisco 250 series smart switch Power cable (power supply for 8-port and 10-port units) Mounting kit Brief instruction manual
Performance
Capacity in millions of packets per second (mpps), 64-byte packets	95.23
Switching capacity in gigabits per second (Gbps)	128.0
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
Security
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 precedent, 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
IPv6
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
Management
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)	Innovative network level monitoring and management tool - built into Cisco 250 to 550X series switches It enables detection of network topology, link status display, event monitoring, configuration, updating software images using multiple switches on the network
SNMP	SNMP 1, 2c and 3 versions with SNMP Traps support 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 an 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
Discovery
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