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Chapter 3 Hardware Panels
XMG1915 Series User’s Guide
38
3.1.1 Multi-Gigabit Ethernet Ports
The Switch has 2.5 GbE auto-negotiating, auto-crossover Ethernet ports. In 100/1000 Mbps/2.5 Gbps
multi-gigabit Ethernet, the speed can be 100 Mbps, 1000 Mbps, or 2.5 Gbps. The duplex mode is full
duplex.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (100/1000 Mbps/2.5
Gbps) of the connected device in full duplex mode.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover
Ethernet cable.
When auto-negotiation is turned on, an Ethernet port negotiates with the peer automatically to
determine the connection speed and duplex mode. If the peer Ethernet port does not support auto-
negotiation or turns off this feature, the Switch determines the connection speed by detecting the signal
on the cable and using half duplex mode. When the Switch’s auto-negotiation is turned off, an Ethernet
port uses the pre-configured speed and duplex mode when making a connection, thereby requiring
you to make sure that the settings of the peer Ethernet port are the same in order to connect.
3.1.1.1 Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports on the Switch are:
• Speed: Auto
•Duplex: Auto
• Flow control: Off
• Link Aggregation: Disabled
1G/10G SFP+ Slots
Port 9 – 10
(XMG1915-10E /
XMG1915-10EP)
Port 17 – 18
(XMG1915-18EP)
Use SFP+ transceivers in these ports for high-bandwidth backbone connections. You can
also insert an SFP+ Direct Attach Copper (DAC) in the SFP+ slot.
Restore Press the RESTORE button for 2 to 6 seconds to have the Switch automatically reboot. See
Section 3.3 on page 47 for more information about the LED behavior.
Press the RESTORE button for more than 6 seconds to have the Switch restore the factory
default file. See Section 3.3 on page 47 for more information about the LED behavior.
LED Mode
(only available for
XMG1915-10EP)
Push this button to toggle the Ethernet port’s LED between Link/ACT LED and PoE LED. By
default, the Ethernet port’s LED acts as a Link/ACT LED.
• Push this button to change the Ethernet port’s LED to act as a PoE LED. The PoE status LED
will light when power is supplied to the PoE Ethernet port(s). See Section 3.3 on page 47
for more information on the PoE status LED.
• Push this button again to change the Ethernet port’s LED to act as a Link/ACT LED. The
PoE status LED will turn off even when power is supplied to the PoE Ethernet port(s).
View the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting.
Table 6 Panel Connections (continued)
CONNECTOR /
BUTTON
DESCRIPTION
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