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Chapter 3 Hardware Overview
XGS-4728F User’s Guide
44
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (100/1000
Mbps) and duplex mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or
crossover Ethernet cable.
3.1.2.1 Default Ethernet Settings
The factory default negotiation settings for the Ethernet ports on the Switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off
3.1.3 Mini-GBIC Slots
These are 24 slots for Small Form-Factor Pluggable (SFP) transceivers. A transceiver is a
single unit that houses a transmitter and a receiver. Use a transceiver to connect a fiber-optic
cable to the Switch. The Switch does not come with transceivers. You must use transceivers
that comply with the Small Form-Factor Pluggable (SFP) Transceiver MultiSource Agreement
(MSA). See the SFF committee’s INF-8074i specification Rev 1.0 for details.
You can change transceivers while the Switch is operating. You can use different transceivers
to connect to Ethernet switches with different types of fiber-optic connectors.
• Type: SFP connection interface
• Connection speed: 1 Gigabit per second (Gbps)
1 To avoid possible eye injury, do not look into an operating fiber-optic module’s
connectors.
3.1.3.1 Transceiver Installation
Use the following steps to install a mini GBIC transceiver (SFP or XFP module).
1 Insert the transceiver into the slot with the exposed section of PCB board facing down.
Figure 9 Transceiver Installation Example
2 Press the transceiver firmly until it clicks into place.
3 The Switch automatically detects the installed transceiver. Check the LEDs to verify that
it is functioning properly.