The following sections describe the meanings of the LEDs on the X670-G2 series switches.
| Label or Type | Color/State | Meaning | 
|---|---|---|
| M (Management) | Slow blinking green (1 Hz) | Normal operation | 
| Fast blinking green (2 Hz) | Power-on self test (POST) in progress or Switch diagnostics are running  | 
                        |
| Steady green | POST passed: system is booting image | |
| Blinking amber | System is disabled: POST failed or system overheated | |
| Off | No external power is attached | |
| 
                                 FAN 1, 2, 3, 4, 5  | 
                            
                                 Steady green  | 
                            
                                 Normal operation.  | 
                        
| 
                                 Blinking amber  | 
                            
                                 Failure.  | 
                        |
| 
                                 Off  | 
                            
                                 No power.  | 
                        |
| 
                                 P1, P2 (Power Supply)  | 
                            
                                 Steady green  | 
                            
                                 Normal operation.  | 
                        
| 
                                 Steady amber  | 
                            
                                 Power is attached, but no power is on.  | 
                        |
| 
                                 Blinking amber  | 
                            
                                 Power failure.  | 
                        |
| 
                                 Off  | 
                            
                                 No power is attached.  | 
                        |
| 
                                 Ethernet Port 1-48 or 1-72  | 
                            
                                 Steady green  | 
                            
                                 Link OK.  | 
                        
| 
                                 Blinking green  | 
                            
                                 Activity on the indicated port.  | 
                        |
| Off | No link or port disabled. | |
| 
                                 670-G2-48x-4q QSFP+ ports 40G mode (49, 53, 57, 61)  | 
                            
                                 Steady blue  | 
                            
                                 Link OK  | 
                        
| 
                                 Blinking blue  | 
                            
                                 Activity on the indicated port  | 
                        |
| 
                                 670-G2-48x-4q QSFP+ ports 10G mode (49-64)  | 
                            
                                 Steady green  | 
                            
                                 Link OK  | 
                        
| 
                                 Blinking green  | 
                            
                                 Activity on the indicated port  | 
                        
| Label or Type | Color/State | Meaning | 
|---|---|---|
| 
                                 Left digit (1)  | 
                            Reserved for future use. | |
| 
                                 Right digit (1 – 8)  | 
                            
                                 Indicates the position of this switch in the SummitStack configuration.  | 
                        |
| 
                                 Upper half blinking  | 
                            
                                 This switch is the stack master node.  | 
                        |
| 
                                 Lower half blinking  | 
                            
                                 This switch is the stack backup node.  | 
                        |
| 
                                 Lit steadily  | 
                            
                                 This switch is a standby node in the stack.  | 
                        |