Коммутатор Cisco Small Business SG250-50HP
113039 ₽
/ $1102.00
Стоимость с учетом НДС
(worst case)
Model220V=10.1W
110V=61.4W220V=13.42W
110V=85.19WКоммутатор SG250-50HP-K9 48 10/100/1000 PoE+ ports with 192W power budget 2 Gigabit copper/SFP combo ports
Технические характеристики
(worst case)
Model220V=10.1W
110V=61.4W220V=13.42W
110V=85.19W220V=133.9W
461.32220V=230W
812.09220V=24.4W
110V=135.2W220V=254.5W
893.98220V=255.8W
904.90220V=257.1W
887.50220V=263.5W
911.72220V=28.3W
110V=238W220V=37.2W
110V=262W220V=44.3W
110V=265.2W220V=468.1W
1,644.31220V=487.1W
1,713.92220V=49.2W
110V=260.1W220V=59.3W
110V=267.2W220V=59.8W
209.51220V=60.3W
110V=481.9W220V=70.3W
110V=502.3W220V=84.17W
290.684 10 Gigabit Ethernet
48 Gigabit Ethernet4 Gigabit Ethernet
48 Fast Ethernet50°C 44.9dB
130,25550°C 46.2dB
62,94950°C 47.3dB
62,60750°C 47.5dB
134,93350°C 49.3dB
68,58550°C 49.7dB
333,79250°C 50.2dB
53,83950°C 50.6dB
53,72250°C 52.2dB
314,04050°C 52.7dB
286,55550°C 53.7dB
430,341802.3at PoE+ and 802.3af PoE delivered over any of the RJ-45 por
The following switches support 802.3at PoE+, 802.3af, and Cisco prestandard (legacy) PoE. Maximum power of 30.0W to any 10/100 or Gigabit Ethernet port, until the PoE budget for the switch is reached. The total power available for PoE per switch is as followsAC Power
YesAccess Control Lists (ACLs)
Support for up to 512 rulesAcoustic noise and Mean Time Between Failures (MTBF)
Model nameAuto Smartports
Automatically applies the intelligence delivered through the Smartports roles to the port based on the devices discovered over Cisco Discovery Protocol or LLDP-MED. This facilitates zero-touch deploymentsAutoconfiguration with SCP file download
Enables mass deployment with protection of sensitive dataBonjour
The switch advertises itself using the Bonjour protocolButtons
Reset buttonCable length detection
Adjusts the signal strength based on the cable length. Reduces the power consumption for shorter cablesCabling Type
Unshielded Twisted Pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5e or better for 1000BASE-TCertification
UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class ACisco Discovery Protocol
The switch advertises itself using the Cisco Discovery Protocol. It also learns the connected device and its characteristics using Cisco Discovery ProtocolCisco Network Plug and Play (PnP) agent
The Cisco Network Plug and Play solution provides a simple, secure, unified, and integrated offering to ease new branch or campus device rollouts or for provisioning updates to an existing network. The solution provides a unified approach to provision Cisco routers, switches, and wireless devices with a near-zero-touch deployment experienceClass 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 QoSClassless Interdomain Routing (CIDR)
Support for CIDRCloud services
Support for Cisco FindIT Network Manager and Cisco Active AdvisorCongestion avoidance
A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronizationCPU
800 MHz ARMCPU memory
512 MBDHCP relay at Layer 3
Relay of DHCP traffic across IP domainsDisable port LEDs
LEDs can be manually turned off to save on energyDoS prevention
Denial-of-Service (DoS) attack preventionDynamic Host Configuration Protocol (DHCP) (options 12, 66, 67,
DHCP options facilitate tighter control from a central point (DHCP server), to obtain IP address, autoconfiguration (with configuration file download), DHCP Relay, and host nameEEE compliant (802.3az)
Supports IEEE 802.3az on all copper Gigabit Ethernet portsEmbedded FindIT Network Probe
Support for embedded FindIT Network Probe running on the switch. Eliminates the need to set up a separate hardware or virtual machine for the FindIT Network Probe on siteEnergy detect
Automatically turns power off on RJ-45 port when detecting link down. Active mode is resumed without loss of any packets when the switch detects the link is upFeature
DescriptionFirmware upgrade
Web browser upgrade (HTTP/HTTPS) and TFTP and upgrade over SCP running over SSHFlash
256 MBGeneric VLAN Registration Protocol (GVRP)and Generic Attribute R
Protocols for automatically propagating and configuring VLANs in a bridged domainGLC-BX-U=
1000 MbpsHOL blocking
Head-Of-Line (HOL) blockingIEEE 802.1X (authenticator role)
RADIUS authentication, guest VLAN, single/multiple host mode, and single/multiple sessionsIGMP (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)IGMP querier
Used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast routerIPv4 and IPv6 dual stack
Coexistence of both protocol stacks to ease migrationIPv4 Routing
Wire-speed routing of IPv4 packetsIPv6
IPv6 host modeIPv6 ACL
Drop or rate limit IPv6 packets in hardwareIPv6 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 autoconfigIPv6 QoS
Prioritize IPv6 packets in hardwareIPv6 RFCs supported
RFC 4443 (which obsoletes RFC 2463) ICMPv6IPv6 routing
Wire-speed routing of IPv6 packetsJumbo frames
Frame sizes up to 9K bytes. The default MTU is 2K bytesLayer 3 interface
Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interfaceLEDs
System, Link/Act, PoE, SpeedLink Layer Discovery Protocol (LLDP) (802.1ab) with LLDP-MED ext
Link Layer Discovery Protocol (LLDP) allows the switch to advertise its identification, configuration, and capabilities to neighboring devices that store the data in a MIB. LLDP-MED is an enhancement to LLDP that adds the extensions needed for IP phonesLocalization
Localization of GUI and documentation into multiple languagesLogin banner
Configurable multiple banners for web as well as CLILoopback detection
Provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STPMAC table
8K addressesModel
Power optionMulticast Listener Discovery (MLD v1/2) snooping
Deliver IPv6 multicast packets only to the required receiversOperating temperature
32° to 122°F (0° to 50°C)Other management
Traceroute; single IP management; HTTP/HTTPS; RADIUS; port mirroring; TFTP upgrade; DHCP client; Simple Network Time Protocol (SNTP); cable diagnostics; Ping; syslog; Telnet client (SSH secure support); automatic time settings from Management StationPacket buffer
All numbers are aggregate across all ports because the buffers are dynamically sharedPoE Powered Device (PD) and PoE pass-through
Besides AC power, select compact switch models can work as PoE Powered Device (PD) and be powered by PoE switches connected to the uplink ports. The switch can also pass through the power to downstream PoE end devices if requiredPort grouping/link aggregation
Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP)Port mirroring
Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to 4 source ports can be mirrored to one destination portPort security
Ability to lock source MAC addresses to ports and limit the number of learned MAC addressesPower
100 to 240V 50 to 60 Hz, internal, universal SF250-24, SF250-24P, SF250-48, SF250-48HP, SG250-26, SG250-26HP, SG250-26P, SG250-50, SG250-50HP, SG250-50P, SG250X-24, SG250X-24P, SG250X-48, SG250X-48PPriority levels
8 hardware queuesPrivate MIBs
CISCOSB-lldp-MIBRADIUS
Supports RADIUS authentication for management access. Switch functions as a clientRate limiting
Ingress policer; egress shaping and rate control; per VLAN, per port, and flow basedRemote monitoring (RMON)
Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysisScheduling
Strict priority and Weighted Round-Robin (WRR) queue assignment based on DSCP and class of service (802.1p/CoS)Secure Copy (SCP)
Securely transfers files to and from the switchSecure Core Technology (SCT)
Ensures that the switch will receive and process management and protocol traffic no matter how much traffic is receivedSecure Sensitive Data (SSD)
A mechanism to manage sensitive data (such as passwords, keys, and so on) securely on the switch, populating this data to other devices, and secure autoconfig. Access to view the sensitive data as plaintext or encrypted is provided according to the user-configured access level and the access method of the userSecure Shell (SSH) Protocol
SSH is a secure replacement for Telnet traffic. Secure Copy (SCP) also uses SSH. SSH v1 and v2 are supportedSF250-24P
0° to 25°C 39.7dBSF250-48HP
0° to 30°C 38.0dBSFP-10G-LR-S
10 GigSG250-08HP
8 Gigabit EthernetSG250-10P
10 Gigabit EthernetSG250-18
18 Gigabit EthernetSG250-26
–SG250-26HP
0° to 30°C 37.5dBSG250-26P
0° to 30°C 36.0dBSG250-50HP
0° to 30°C 34.2dBSG250-50P
0° to 30°C 35.6dBSG250X-24
0° to 30°C 32.6dBSG250X-24P
0° to 30°C 35.1dBSG250X-48
0° to 30°C 36.6dBSG250X-48P
0° to 30°C 35.9dBSmart Network Application (SNA)
An innovative network-level monitoring and management tool embedded in Cisco 250 to 550X Series switches. It can discover network topology, display link status, monitor events, apply configurations, and upgrade software images across multiple switches in the networkSmartports
Simplified configuration of QoS and security capabilitiesSNMP
SNMP versions 1, 2c, and 3 with support for traps, and SNMP v3 User-based Security Model (USM)Spanning Tree Protocol (STP)
Standard 802.1d spanning tree supportSSL
Secure Sockets Layer (SSL) encrypts all HTTPS traffic, allowing secure access to the browser-based management GUI in the switchStandard MIBs
lldp-MIBStandards
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 4330Storage humidity
10% to 90%, relative, noncondensingStorage Temperature
-4° to 158°F (-20° to 70°C)Storm Control
Broadcast, multicast, and unknown unicastSTP loopback guard
Provides additional protection against Layer 2 forwarding loops (STP loops)Supported SFP/SFP+ modules
SKUText-editable configs
Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deploymentTextview Command-Line Interface (CLI)
Scriptable CLI. A full CLI as well as a menu-based CLI is supported. User privilege levels 1, 7, and 15 are supported for the CLITime-based PoE
PoE power can be on or off based on user-defined schedule to save energyTime-based port operation
Link up or down based on user-defined schedule (when the port is administratively up)USB slot
USB Type-A slot on the front panel of the switch for easy file and image managementUser Datagram Protocol (UDP) relay
Relay of broadcast information across Layer 3 domains for application discovery or relaying of bootP/DHCP packetsVLAN
Support for up to 256 active VLANs simultaneouslyVLAN mirroring
Traffic from a VLAN can be mirrored to a port for analysis with a network analyzer or RMON probe. Up to 4 source VLANs can be mirrored to one destination portVoice 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 devicesWarranty
Limited lifetimeWeb user interface
Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports configuration, wizards, system dashboard, system maintenance, and monitoringОтзывов: 0
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