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48 портов 10/100 4 отдельных гигабитных порта (2 порта под SFP, 2 порта 1g). поддерживает dhcp snooping, IP ACL, MAC ACL. Описание http://www.dell.com/...connect-3548/pd 1500 грн. Port Attributes 48 10/100BASE-T auto-sensing Fast Ethernet switching ports Additional 2 Copper GbE ports PLUS 2 optional Fiber GbE via SFP transceivers Integrated Copper GbE ports provide resilient stacking Auto-negotiation for speed, duplex mode and flow control Auto MDI/MDIX Port mirroring Broadcast storm control Performance Switch Fabric Capacity 17.6 Gb/s Forwarding Rate 13.1 Mpps Up to 8,000 MAC Addresses Availability Spanning Tree (IEEE 802.1D) and Rapid Spanning Tree (IEEE 802.1w) with Fast Link support Multiple Spanning Trees (IEEE 802.1s) External redundant power support with PowerConnect RPS-600 (sold separately) Virtual Cable Tester provided by Marvell™ for providing cable diagnostics Optical transceiver diagnostics VLAN VLAN support for tagging and port-based as per IEEE 802.1Q Up to 256 VLANs supported Dynamic VLAN with GVRP support Voice VLAN Protocol VLANs Private VLAN Edge Support 802.1x Auto VLAN Quality of Service Layer 2 Trusted Mode (IEEE 802.1p tagging) Layer 3 Trusted Mode (DSCP) 4 Priority Queues per Port Multicast Static IP multicast IGMP Querier for IP Multicast Support Security IEEE 802.1x based edge authentication IP and MAC based Access Control Lists (ACLs) Switch access password protection with advanced Password Management User-definable settings for enabling or disabling Web, SSH, Telnet, SSL management access Port-based MAC Address alert and lock-down IP Address filtering for management access via Telnet, HTTP, HTTPS/SSL, SSH and SNMP RADIUS and TACACS+ remote authentication for switch management access SSLv3 and SSHv2 encryption for switch management traffic Private VLAN Edge Support DHCP Snooping Other Switching Link Aggregation with support for up to 8 aggregated links per switch and up to 8 member ports per aggregated link (IEEE 802.3ad) LACP support (IEEE 802.3ad) Management Web-based management interface Industry-standard CLI accessible via Telnet or local serial port SNMPv1, SNMPv2c and SNMPv3 supported 4 RMON groups supported (history, statistics, alarms and events) TFTP transfers of firmware and configuration files Dual firmware images on-board Multiple Configuration file upload/download supported Statistics for error monitoring and performance optimization including port summary tables BootP/DHCP IP address management supported LLDP-MED Support Syslog remote logging capabilities Temperature sensors for environmental monitoring Virtual Cable Tester by MarvellTM and fiber transceiver diagnostics for advanced troubleshooting Chassis Dimensions: 440 x 257 x 43.2 mm (W x D x H) 17.3 x 10.12 x 1.7 in (W x D x H) Height: 1U rack Weight: 11lbs (5kg) Environmental Operating Conditions Operating temperature: 0C - 45C Storage temperature: -20C to 70C Operating relative humidity: 10% - 90% Storage relative humidity: 10% - 95% Power supply: 100-240VAC, 50-60Hz voltage