SF250產品系列型號比較

SF250-24

SF250-24P

SF250-48

SF250-48HP

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General
Device typeSwitch, 100 M, 24 portsSwitch, 100 M, 24 portsSwitch, 100 M, 48 portsSwitch, 100 M, 48 ports
Enclosure typeRack-mountable, 1 RURack-mountable, 1 RURack-mountable, 1 RURack-mountable, 1 RU
Ports24 x 10/100, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP24 x 10/100, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP48 x 10/100, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP48 x 10/100, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP
Power over Ethernet (PoE)-PoE+ (24 ports, 185W)-PoE+ (48 ports, 195W)
Performance12.8-Gbps switching capacity, 9.52-Mpps forwarding performance (64-byte packet size)12.8-Gbps switching capacity, 9.52-Mpps forwarding performance (64-byte packet size)17.6-Gbps switching capacity, 13.1-Mpps forwarding performance (64-byte packet size)17.6-Gbps switching capacity, 13.1-Mpps forwarding performance (64-byte packet size)
MAC address table size8k entries8k entries8k entries8k entries
Capacity256 active VLANs256 active VLANs256 active VLANs256 active VLANs
Jumbo frameYesYesYesYes
Remote management protocolSNMP, RMON, HTTP, HTTPS, TFTP, Telnet, SSHSNMP, RMON, HTTP, HTTPS, TFTP, Telnet, SSHSNMP, RMON, HTTP, HTTPS, TFTP, Telnet, SSHSNMP, RMON, HTTP, HTTPS, TFTP, Telnet, SSH
FeaturesLayer 2 switching, Layer 3 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree (MSTP), Trivial File Transfer Protocol (TFTP) support, access control list (ACL) support, quality of service (QoS), jumbo frames support, MLD snooping, SNMP, RMON, SNTP, Cisco Discovery Protocol, Auto SmartPortsLayer 2 switching, Layer 3 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree (MSTP), Trivial File Transfer Protocol (TFTP) support, access control list (ACL) support, quality of service (QoS), jumbo frames support, MLD snooping, SNMP, RMON, SNTP, Cisco Discovery Protocol, Auto SmartPortsLayer 2 switching, Layer 3 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree (MSTP), Trivial File Transfer Protocol (TFTP) support, access control list (ACL) support, quality of service (QoS), jumbo frames support, MLD snooping, SNMP, RMON, SNTP, Cisco Discovery Protocol, Auto SmartPortsLayer 2 switching, Layer 3 switching, DHCP support, BOOTP support, VLAN support, IGMP snooping, Syslog support, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, Unicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree (MSTP), Trivial File Transfer Protocol (TFTP) support, access control list (ACL) support, quality of service (QoS), jumbo frames support, MLD snooping, SNMP, RMON, SNTP, Cisco Discovery Protocol, Auto SmartPorts
Compliant standardsIEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3af PoE, IEEE 802.3at PoE, IEEE 802.3azIEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3af PoE, IEEE 802.3at PoE, IEEE 802.3azIEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3af PoE, IEEE 802.3at PoE, IEEE 802.3azIEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3af PoE, IEEE 802.3at PoE, IEEE 802.3az
RAM512 MB512 MB512 MB512 MB
Flash memory256 MB flash256 MB flash256 MB flash256 MB flash
Status indicatorsSystem, link/speed per portSystem, link/speed per portSystem, link/speed per portSystem, link/speed per port
Expansion / Connectivity
Interfaces24 x 10BASE-T/100BASE-TX, RJ-45, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP24 x 10BASE-T/100BASE-TX, RJ-45, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP48 x 10BASE-T/100BASE-TX, RJ-45, 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP48 x 10BASE-T/100BASE-TX, RJ-45 (PoE+), 2 x Gigabit SFP/RJ-45, 2 x Gigabit SFP
Power
Power devicePower supply, internalPower supply, internalPower supply, internalPower supply, internal
Voltage requiredAC 120/230V (50/60 Hz)AC 120/230V (50/60 Hz)AC 120/230V (50/60 Hz)AC 120/230V (50/60 Hz)
Miscellaneous
Width17.3 in (440 mm)17.3 in (440 mm)17.3 in (440 mm)17.3 in (440 mm)
Depth7.95 in (202 mm)10.12 in (257 mm)10.12 in (257 mm)13.78 in (350 mm)
Height1.45 in (44 mm)1.45 in (44 mm)1.45 in (44 mm)1.45 in (44 mm)
Weight6 lb (2.72 kg)9.04 lb (4.1 kg)7.87 lb (3.57 kg)10.87 lb (4.93 kg)
Mounting kitIncludedIncludedIncludedIncluded
MTBF630,719 hours314,040 hours256,281 hours286,556 hours
Compliant standardsUL 60950, FCC Part 15 A, CSA 22.2UL 60950, FCC Part 15 A, CSA 22.2UL 60950, FCC Part 15 A, CSA 22.3UL 60950, FCC Part 15 A, CSA 22.4
Manufacturer Warranty
Service and supportLimited lifetime warrantyLimited lifetime warrantyLimited lifetime warrantyLimited lifetime warranty
Service and support detailsLimited warranty: lifetime; technical support (Web): 1 year; technical support (phone consulting): 1 yearLimited warranty: lifetime; technical support (Web): 1 year; technical support (phone consulting): 1 yearLimited warranty: lifetime; technical support (Web): 1 year; technical support (phone consulting): 1 yearLimited warranty: lifetime; technical support (Web): 1 year; technical support (phone consulting): 1 year
Environmental Parameters
Minimum operating temperature32°F (0°C)32°F (0°C)32°F (0°C)32°F (0°C)
Maximum operating temperature122°F (50°C)122°F (50°C)122°F (50°C)122°F (50°C)
Humidity range operating10-90% (noncondensing)10-90% (noncondensing)10-90% (noncondensing)10-90% (noncondensing)
Minimum storage temperature-4°F (-20°C)-4°F (-20°C)-4°F (-20°C)-4°F (-20°C)
Maximum storage temperature158°F (70°C)158°F (70°C)158°F (70°C)158°F (70°C)
Humidity range storage10-90% (noncondensing)10-90% (noncondensing)10-90% (noncondensing)10-90% (noncondensing)