MES3000 Ethernet switch series                      23 
 
 
Fig. 13—SFP transceiver socket appearance 
Table 2.12 —Ethernet interface status light indication 
LINK/ACT indicator is lit 
Port is disabled or connection is not established 
10Mbps or 100Mbps connection is established 
1000Mbps connection is established 
Data transfer is in progress 
XG interface status is represented by indicators located next to the interface sockets, see Fig.  14. 
Each XG interface has a pair of associated indicators. The top ember indicator represents the activity of 
the  transmitting  part  of  the  port,  the  bottom  green  indicator—the  activity  of  the  receiving part  of  the 
port. Data transmission is represented by flashing indicators of the corresponding direction.  
 
Fig. 14—XG interface LED indicator appearance 
Unit ID (1-8) indicators are intended for identifying the number of device in a stack.  
System  indicators  (Power,  Master,  Fan,  RPS)  are  designed  for  displaying  the  operation  status  of 
MES3000 series switches. 
Table 2.13 —LED indication of the system indicators and XG port indicators 
Both indicators active (flashing) 
(bottom—green, top—ember) 
Port operation speed—
1000Mbps 
Both indicators active (flashing) 
(bottom—green, top—ember) 
Power is on, normal device 
operation 
Power-on self-test (POST) 
Missing primary main power