S2751-28TP-PWR-EI-AC Specification

Downlink ports

24 × 10/100Base-TX Ethernet ports

Uplink ports

2 Gig SFP and 2 dual-purpose 10/100/1000 or SFP

MAC address

16K MAC address entries
Manual deletion of dynamic MAC address entries
Aging time of MAC address configurable
MAC address learning control which based on ports
Blackhole MAC address entries

VLAN feature

4K VLANs, complying with IEEE 802.1Q
Port-based VLAN assignment

MAC address-based assignment
Port-based QinQ

QoS

Port-based rate limiting and flow-based rate limiting
8 queues of different priorities on each port
Mapping between 802.1p priorities and queues
SP, WRR, and SP+WRR algorithms

packet-based priority remark and packet redirection

IPv6 feature

IPv6 protocol
Static IPv6 routes
Supports MLD v1/v2 snooping.

Multicast

MVLAN
Controllable multicast
IGMP v1/v2/v3 snooping
Port-based rate limiting for multicast packets

Reliability

STP (IEEE 802.1d), RSTP (IEEE 802.1w), MSTP (IEEE 802.1s), and RRPP topology and RRPP multi-instance
SEP and ERPS (G.8032)
Smart Link tree topology and Smart Link multi-instance, implementing millisecond-level protective switchover

Traffic sampling

sFlow

Security & access features

802.1x authentication and limit on the number of users on an interface
Storm suppression
IP Source Guard

Multiple authentication methods including AAA authentication, RADIUS authentication, and TACACS+ authentication
802.1x authentication, MAC address authentication, MAC bypass authentication 
DHCP snooping
Port isolation and sticky MAC
Packet filtering based on MAC addresses
Suppression of multicast, broadcast, and unknown unicast packets
Limit on the number of learned MAC addresses
CPU defense
S2750-EI/S2751-EI:DHCP relay

Surge protection

Surge protection capability of service ports: 6 kV

Management

Stack
Easy Operation
CLI-based configuration
Remote configuration using Telnet
SNMP V1/V2/V3
Remote network monitoring
SSHv2
Web-based device management

Operating environment

Long-term operating temperature: –5°C to + 50°C
Relative humidity: 10% to 90% (non-condensing)

Power

AC:
Rated voltage range: 100 V to 240 V AC, 50/60 Hz
Maximum voltage: 90 to 264 V AC, 50/60 Hz

Dimensions (W x D x H)                                                           

442 × 310 × 43.6 mm

Weight

S2751-28TP-PWR-EI-AC<4.5 kg

Power consumption

S2751-28TP-PWR-EI-AC<147 W
(PoE < 124W)