Allied Telesis x510 Series - Manual (Page 38)

Chapter 1: Overview
38
LEDs for the
Stacking Slots
SFP+ slots 27 and 28 on the 28-port switches and slots 51 and 52 on the
52-port switches may be used as stacking slots to build a VCStack of up to
four switches. For background information, refer to Chapter 2, “Virtual
Chassis Stacking” on page 45. Table 9 defines the LED states when the
slots contain stacking transceivers.
Table 8. SFP+ Slot LEDs
LED State Description
Link/Activity Off The slot is empty, the SFP or SFP+
transceiver has not established a link to a
network device, or the LEDs are turned
off. To turn on the LEDs, use the eco-
friendly button.
Solid green The SFP or SFP+ transceiver has
established a link at 1000 Mbps or 10
Gbps to a network device.
Flashing
green The SFP+ transceiver is receiving or
transmitting packets to a network device
at 10 Gbps. (The LED does not flash for
activity at 1000 Mbps.).
Table 9. Stacking Slot LEDs
LED State Description
Link/Activity Off The slot is empty, the stacking transceiver
has not established a link to a network
device, or the LEDs are turned off. To turn
on the LEDs, use the eco-friendly button.
Solid green The stacking transceiver has established
a link at 10 Gbps to another switch in the
stack.
Flashing
green The stacking transceiver is receiving or
transmitting packets.