ASR 1004 and 1001-x router front panel CRIT lights are red

[zwgff]

Everybody is good, I have a few sets of ASR 1001x and 1004 routers, why front panel CRIT lights are red.But there is a ASR 1001-x equipment front panel CRIT lamp is quenched.

why front panel CRIT lights are red, What reason, What method can let red lights go out, thank you for your attention.

[Iulian Vaideanu · Accepted solution]

Use this to find out:

asr1#sh facility-alarm status
System Totals  Critical: 1  Major: 0  Minor: 0

Source              Severity      Description [Index]
------              --------      -------------------
GigabitEthernet0           CRITICAL      Physical Port Link Down [1]

[zwgff]

Well, I try, I appreciate