Installation guide

Description of Hardware
1-3
1
automatically. If a device connected to one of these ports does not support
auto-negotiation, the communication mode of that port can be configured manually.
Each port also supports IEEE 802.3x auto-negotiation of flow control, so the switch
can automatically prevent port buffers from becoming saturated.
SFP Slots
The Small Form Factor Pluggable (SFP) transceiver slots are shared with two RJ-45
ports (Ports 27 and 28). In its default configuration, if an SFP transceiver (purchased
separately) is installed in a slot and has a valid link on its port, the associated RJ-45
port is disabled and cannot be used. The switch can also be configured to force the
use of an RJ-45 port or SFP slot, as required.
Table 1-1 Supported SFP Transceivers
Media Standard Cable Diameter (microns) Wavelength (nm)
Maximum Distance
*
* Maximum distance may vary for diffierent SFP vendors.
1000BASE-SX 50/125 850 700 m
62.5/125 850 400 m
1000BASE-LX 50/125 1300 550 m
62.5/125 1300 550 m
9/125 1300 10 km
1000BASE-LH 9/125 1310 35 km
1550 80 km
1000Base-T 100 m