Key features in this device type are switch - managed enclosure type : 1u Advanced switching : layer 3 networking : ports qty : 48 x ethernet 10base-t, ethernet 100base-tx, ethernet 1000base-t data transfer rate : 1 gbps Data link protocol : ethernet, fast ethernet, gigabit ethernet routing protocol : ospf, bgp-4, is-is, rip-1, rip-2, bgp, igmpv2, igmp, vrrp, ospfv2, pim-sm, static ip routing, pim-dm, igmpv3, ospfv3, pim-ssm, multiprotocol bgp, msdp, vrrpe, policy-based routing (pbr), ripng remote management protocol : rmon, telnet, snmp 3, https, ssh connectivity technology : wired switching protocol : ethernet Mac address table size: 32k entries features : flow control, layer 2 switching, dhcp support, arp support, vlan support, igmp snooping, dos attack prevention, port mirroring, store and forward, ipv6 support, weighted random early detection (wred), dhcp snooping, trivial file transfer protocol (tftp) support, access control list (acl) support, quality of service (qos), committed access rate (car), mld snooping compliant standards : ieee 802.1d, ieee 802.1q, ieee 802.1p, ieee 802.3x, ieee 802.3ad (lacp), ieee 802.1w, ieee 802.1x, ieee 802.3ae, ieee 802.1s, ieee 802.3ah, ieee 802.1v, ieee 802.1ag Power device : power supply - hot-plug - plug-in module power redundancy : yes Voltage required : ac 120/230 v ( 50/60 hz ) features : redundant power system (rps) connector Expansion / connectivity : expansion slots total (free) : 1 ( 1 ) x expansion slot 4 ( 4 ) x sfp+ interfaces : 48 x network - ethernet 10base-t/100base-tx/1000base-t - rj-45