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DGS-1250 Series Gigabit Ethernet Smart Managed Switch Hardware Installation Guide
29
Location
LED
Color
Status
Description
PoE Mode
DGS-1250-28XMP
DGS-1250-52XMP
Green
Light on (Solid)
Power feeding.
Amber
Light on (Solid)
Error Condition.
Off
Light off
No Power feeding.
LED per
SFP/SFP+ Port
Link/Act
Green
Light on (Solid)
When there is a connection (or link) to a
10Gbps Ethernet device on any of the
ports
Light blinking
When there is reception or transmission
of data occurring at a 10Gbps port
Amber
Light on (Solid)
When there is a connection (or link) to a
1000Mbps Ethernet device on any of the
ports
Light blinking
When there is reception or transmission
of data occurring at a 1000 Mbps port
Off
Light off
Link down or no link
Port Functions
Feature
Description
Console Port
RJ45interface for Out-Of-Band (OOB) CLI configuration
RJ45 Ports
Compliant with the following standards:
IEEE 802.3 compliance
IEEE 802.3u compliance
IEEE 802.3ab compliance
IEEE 802.3az compliance
Support Half-Duplex and Full-Duplex operations
IEEE 802.3x Flow Control support for Full-Duplex mode
Back Pressure for Half-Duplex mode
Head-of-line blocking prevention
Manual/auto MDI/MDIX configuration
Auto-Negotiation for each port
SFP/SFP+ Ports
Compliant with the following standards:
IEEE 802.3ae compliance
IEEE 802.3z compliance
SFP Transceivers Supported:
DEM-310GT (1000BASE-LX, single-mode, 10 km, with DDM)
DEM-311GT (1000BASE-SX, multi-mode, 550 m)
DEM-312GT2 (1000BASE-SX, multi-mode, 2 km)
DEM-314GT (1000BASE-LHX, single-mode, 50 km)
DEM-315GT (1000BASE-ZX, single-mode, 80 km)
DGS-712 (1000BASE-T)
WDM (BiDi) SFP Transceivers Supported:
DEM-330T (1000BASE-BX-D, single-mode, 10 km, TX: 1550 nm / RX:
1310 nm)
DEM-330R (1000BASE-BX-U, single-mode, 10 km, TX: 1310 nm / RX:
1550 nm)
DEM-331T (1000BASE-BX-D, single-mode, 40 km, TX: 1550 nm / RX:
1310 nm)
DEM-331R (1000BASE-BX-U, single-mode, 40 km, TX: 1310 nm / RX:
1550 nm)
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