Recenze Cisco switch CBS220-24P-4G (24xGbE,4xSFP,24xPoE+,195W) - REFRESH

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Switching capacityForwarding rate in millions of packets per second (mpps; 64-byte packets) 41,66\nSwitching capacity in Gigabits per second (Gbps) 56\nLayer 2 switchingMAC table Up to 8,192 Media Access Control (MAC) addresses\nSpanning Tree Protocol (STP) Standard 802.1d Spanning Tree support, enabled by default

\nFast convergence using 802.1w (Rapid Spanning Tree [RSTP])\nMultiple Spanning Tree instances using 802.1s (MSTP)\n16 instances are supported\n

Port grouping Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP)

\nUp to 8 groups\nUp to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation\nLoad balance based on source and destination MAC address, or source and destination MAC/IP\n

VLAN Support for up to 256 Virtual Local Area Networks (VLANs) simultaneously

\nPort-based and 802.1Q tag-based VLANs\nManagement VLAN\nGuest VLAN\n

Auto voice VLAN Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS\nQinQ VLAN VLANs transparently cross a service provider network while isolating traffic among customers\nGeneric VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP) Protocols for automatically propagating and configuring VLANs in a bridged domain\nHead-of-Line (HOL) blocking HOL blocking prevention\nJumbo frame Frame sizes up to 9,216 supported\nLoopback 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.\nAutomatic Media-Dependent Interface Crossover (MDIX) Automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed.\nSecurityACLs Drop or rate limit based on source and destination MAC, VLAN ID or IP address, protocol, port, Differentiated Services Code Point (DSCP)/IP precedence, Transmission Control Protocol (TCP)/ User Datagram Protocol (UDP) source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP) packets, Internet Group Management Protocol (IGMP) packets, TCP flag

\nSupport up to 512 rules\n

Port security Creates the ability to lock source MAC addresses to ports; limits the number of learned MAC addresses\nIEEE 802.1X (authenticator role) 802.1X: Remote Authentication Dial-in User Service (RADIUS) authentication; guest VLAN;

\nSingle-host, multiple-host, and multisession mode\n

RADIUS, TACACS+ Supports RADIUS and Terminal Access Controller Access Control System (TACACS) authentication; switch functions as a client\nMAC address filtering Supported\nStorm control Broadcast, multicast, and unknown unicast\nDoS protection DOS attack prevention\nSTP 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.\nSpanning Tree Loop Guard This feature provides additional protection against Layer 2 forwarding loops (STP loops).\nSecure Shell (SSH) Protocol SSH is a secure replacement for Telnet traffic. SCP also uses SSH. SSH v1 and v2 are supported.\nSecure Sockets Layer (SSL) SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch\nQoSPriority levels 8 hardware queues per port\nScheduling Strict priority and Weighted Round-Robin (WRR) queue assignment based on DSCP and class of service (802.1p/CoS)\nClass 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\nRate limiting Ingress policer; egress shaping and rate control; per VLAN, per port, and flow-based\nCongestion avoidance A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronization.\nMulticastInternet Group Management Protocol (IGMP) Versions 1, 2, and 3 Snooping IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups\nIGMP querier IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router\nStandardsStandards IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX Fast Ethernet, IEEE 802.3ab

\n1000BASE-T Gigabit Ethernet, IEEE 802.3ad LACP, IEEE 802.3z Gigabit Ethernet, IEEE\n802.3x Flow Control, IEEE 802.1D (STP, GARP, and GVRP), IEEE 802.1Q/p VLAN, IEEE\n802.1w RSTP, IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE\n802.3af, IEEE 802.3at, RFC 768, Request for Comments (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 922, RFC 920, RFC 950, RFC 1042, RFC 1071, RFC 1123, RFC 1141, RFC 1155, RFC 1157, RFC\n1350, RFC 1533, RFC 1541, RFC 1624, RFC 1700, RFC 1867, RFC 2030, RFC 2616, RFC\n2131, RFC 2132, RFC 3164, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC\n2576, RFC 4330, RFC 1213, RFC 1215, RFC 1286, RFC 1442, RFC 1451, RFC 1493, RFC\n1573, RFC 1643, RFC 1757, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2233, RFC\n2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863, RFC 1157, RFC\n1493, RFC 1215, RFC 3416\n

IPv6IPv6 IPv6 host mode

\nIPv6 over Ethernet\nIPv6/IPv4 Dual Stack\nIPv6 neighbor and router discovery (ND)\nIPv6 stateless address auto-configuration\nPath Maximum Transmission Unit (MTU) discovery\nDuplicate Address Detection (DAD)\nICMP version 6\n

IPv6 ACL Drop or rate limit IPv6 packets in hardware\nIPv6 QoS Prioritize IPv6 packets in hardware\nMulticast Listener Discovery (MLD v1/2) Snooping Deliver IPv6 multicast packets only to the required receivers\nIPv6 applications Web/SSL, Telnet server/SSH, DHCP Client, DHCP Autoconfig, Cisco Discovery Protocol (CDP), Link Layer Discovery Protocol (LLDP)\nIPv6 Requests for Comments (RFCs) supported RFC 4443 (which obsoletes RFC2463) - ICMP version 6

\nRFC 4291 (which obsoletes RFC 3513) - IPv6 address architecture\nRFC 4291 - IPv6 addressing architecture\nRFC 2460 - IPv6 specification\nRFC 4861 (which obsoletes RFC 2461) - Neighbor discovery for IPv6\nRFC 4862 (which obsoletes RFC 2462) - IPv6 stateless address auto-configuration\nRFC 1981 - Path MTU discovery\nRFC 4007 - IPv6 scoped address architecture\nRFC 3484 - Default address selection mechanism\n

ManagementCisco Business Dashboard Support direct management with Cisco Business Dashboard and mobile app. Eliminates the need to set up a separate hardware or virtual machine for the Cisco Business Dashboard Probe on site.\nCisco Business mobile app Mobile app for Cisco Business Switch and Wireless products. Helps to set up a local network in minutes and provide easy management at your fingertips.\nCisco 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 zero touch deployment experience.

\nSupports Cisco PnP Connect\n

Web user interface Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports configuration, system dashboard, system maintenance, and monitoring\nText-editable config files Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deployment\nCommand-line interface Scriptable CLI; a full CLI is supported. User privilege levels 1 and 15 are supported for the CLI\nSNMP Simple Management Network Protocol (SNMP) versions 1, 2c, and 3 with support for traps, and SNMP version 3 User-based Security Model (USM)\nStandard Management Information Bases (MIBs) MIB-II (RFC1213)

\nIF-MIB (RFC2863)\nBridge-MIB (RFC4188)\nBridge-MIB-Extension (RFC2674)\nRMON (RFC2819)\nEtherlike MIB (RFC3635)\nRadius Client MIB (RFC2618)\nEntity MIB (RFC2737)\nPOWER-ETHERNET-MIB (RFC3621)\nSyslog MIB (RFC3164)\nGeneric Traps MIB (RFC1215)\nSNMP-COMMUNITY-MIB\nSNMP-MIB\nLLDP-MIB\nLLDP-EXT-MED-MIB\nIEEE8023-LAG-MIB\nCISCO-PORT-SECURITY-MIB\nCISCO-ENVMON-MIB\nCISCO-CDP-MIB\nCISCO-CONFIG-COPY-MIB\n

Remote Monitoring (RMON) Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis\nIPv4 and IPv6 dual stack Coexistence of both protocol stacks to ease migration\nPort mirroring Traffic on a port or VLAN can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to 8 source ports can be mirrored to one destination port. Four sessions are supported.\nFirmware upgrade Web browser upgrade (HTTP/HTTPS) and Trivial File Transfer Protocol (TFTP)

\nDual images for resilient firmware upgrades\n

DHCP (Option 12, 66, 67, 82, 129, and 150) DHCP options facilitate tighter control from a central point (DHCP server) to obtain IP address, auto-configuration (with configuration file download), DHCP relay, and hostname\nTime synchronization Simple Network Time Protocol (SNTP)\nLogin banner Configurable multiple banners for web as well as CLI\nOther management HTTP/HTTPS; TFTP upgrade; DHCP client; Bootstrap Protocol (BOOTP); cable diagnostics; ping; traceroute; syslog\nRemote Monitoring (RMON) Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis\nIPv4 and IPv6 dual stack Coexistence of both protocol stacks to ease migration\nPort mirroring Traffic on a port or VLAN can be mirrored to another port for analysis with a network analyzer or RMON probe. Up to 8 source ports can be mirrored to one destination port. Four sessions are supported.\nFirmware upgrade Web browser upgrade (HTTP/HTTPS) and Trivial File Transfer Protocol (TFTP)

\nDual images for resilient firmware upgrades\n

DHCP (Option 12, 66, 67, 82, 129, and 150) DHCP options facilitate tighter control from a central point (DHCP server) to obtain IP address, auto-configuration (with configuration file download), DHCP relay, and hostname\nTime synchronization Simple Network Time Protocol (SNTP)\nLogin banner Configurable multiple banners for web as well as CLI\nOther management HTTP/HTTPS; TFTP upgrade; DHCP client; Bootstrap Protocol (BOOTP); cable diagnostics; ping; traceroute; syslog\nDiscoveryBonjour The switch advertises itself using the Bonjour protocol\nLink Layer Discovery Protocol (LLDP) (802.1ab) with LLDP-MED Extensions 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 phones.\nCisco Discovery Protocol The switch advertises itself using the Cisco Discovery Protocol. Displays brief information for connected Cisco network devices, IP phones, and wireless access points\nPower efficiencyEEE compliance (802.3az) Support 802.3az Energy Efficient Ethernet on all ports; substantially reduce the power consumption when link bandwidth is not at full utilization\nEnergy Detect Automatically turns power off on Gigabit Ethernet and 10/100 RJ-45 ports when detecting a link down

\nActive mode is resumed without loss of any packets when the switch detects the link up\n

Disable port LEDs LEDs can be manually turned off to save on energy.\nTime-based PoE PoE power can be on or off based on user-defined schedule to save energy.\nTime-based port operation Link up or down based on user-defined schedule (when the port is administratively up).\nPower over Ethernet 802.3af PoE or 802.3at PoE+ delivered over any of the RJ-45 network ports within the listed power budgets\nPoE Power Budget 195 W\nNumber of Ports That Support PoE 24\nPre-standard PoE Support Cisco Pre-Standard PoE\nIntelligent PoE power management Support the granular power negotiation with CDP/LLDP communication with PD devices after IEEE classification\nHardwareButtons Reset button\nCabling type Unshielded Twisted Pair (UTP) Category 5 or better for 10BASE-T/100BASE-TX; UTP Category 5

\nEthernet or better for 1000BASE-T\n

LEDs System, Link/Act, Speed\nFlash 64 MB\nCPU memory 256 MB\nPortsTotal system ports 28 Gigabit Ethernet\nRJ-45 ports 24 Gigabit Ethernet\nUplink ports 4 Gigabit Ethernet Small form-factor pluggable (SFP)\nPacket BufferPacket buffer 4,1 Mb\nSupported SFP ModulesMGBSX1 Multimode fiber\nMGBLX1 Single-mode fiber\nMGBLH1 Single-mode fiber\nMGBT1 UTP Category 5\nGLC-SX-MMD Multimode fiber\nGLC-LH-SMD Single-mode fiber\nGLC-BX-U Single-mode fiber\nGLC-BX-D Single-mode fiber\nGLC-TE UTP cat 5e\nEnvironmentalUnit dimensions (W x D x H) 440 x 257 x 44 mm (17.3 x 10.1 x 1.7 in)\nUnit weight 4.07 kg (8.97 lb)\nPower 100-240 V, 50-60 Hz, Internal\nCertifications UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A, C-tick\nOperating temperature 0-50° C\nStorage temperature –20° C to +70° C\nOperating humidity 10% to 90%, relative, noncondensing\nStorage humidity 10% to 90%, relative, noncondensing\nPower ConsumptionSystem power consumption 110V=30.2W

\n220V=30.4W\n

Power consumption (with PoE) 110V=244.3W

\n220V=240.3W\n

Heat dissipation (BTU/hr) 833.59\nAcoustic Noise and Mean Time Between Failure (MTBF)Fan (number) 2\nAcoustic noise 25°C: 42.7 dB\nMTBF @ 25°C (hours) 587473\nPackage contentsPackage contents Cisco Business 220 Series Ethernet switch

\nPower cord or adaptor\nMounting kit\nQuick start guide\n schovat popis