xStack® DGS-3420 Series Layer 2+ Managed Stackable Gigabit Switch Hardware Installation Reference Guide
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SFP ports compliant to following standards:
•
IEEE 802.3z compliance
SFP Transceivers Supported:
•
DEM-310GT (1000BASE-LX, Single-mode, 10km)
•
DEM-311GT (1000BASE-SX, Mutli-mode, 500m)
•
DEM-312GT2 (1000BASE-SX, Multi-mode, 2km)
•
DEM-314GT (1000BASE-LX, Single-mode, 50km)
•
DEM-315GT (1000BASE-LX, Single-mode, 80km)
•
DGS-712 (1000BASE-TX)
•
DEM-330T/R (1000BASE-BX, WDM transceiver, Single-Mode 10km)
•
DEM-331T/R (1000BASE-BX, WDM transceiver, Single-Mode 40km)
•
DEM-210 (100BASE-FX, Single-mode, 15km)
•
DEM-211 (100BASE-FX, Multi-mode, 2km)
•
DEM-220T (100BASE-BX, Wavelength Tx:1550nm, Rx:1310nm, Single-mode,
20km)
•
DEM-220R (100BASE-BX, Wavelength Tx:1310nm, Rx:1550nm, Single-mode,
20km
PoE Specifications
•
Supports IEEE 802.3af PoE and IEEE 802.3at PoE+ compliance.
•
Supplies power to PD devices up to 15.4W per port (802.3af) or 30W+ per port
(802.3at) more sufficiently.
•
Power Budget: 370W.
•
Supports the Auto Discovery feature. It’ll automatically recognize a connection to
PD devices and immediately provide power.
•
Supports the Auto Disable Port feature. If the port’s electrical current is over
600mA, this feature will activate and still keep the other ports active.
•
Supports the Active Circuit Protection feature. It’ll automatically disable a port if
there is an electrical short and still keep the other ports active.
Power Classification Table:
Class
Usage
Max power used by PD
0
Default
12.95W
1
Optional
3.84W
2
Optional
6.49W
3
Optional
12.95W
4
Reserved
12.95W
•
For 802.3at capable devices, provide power allocation of 0.1 watt granularity
using LLDP method.
Class
Usage
Minimum power levels of output of PSE
0
Default
15.4W
1
Optional
4.0W
2
Optional
7.0W
3
Optional
15.4W
4
Reserved
31W
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