When there are no redundant input power feeds connected to PTX10008 JNP10K-PWR-DC2, the following minor alarm is seen in the 'show chassis alarm' output:
'show chassis alarm'
2021-05-18 22:06:34 CDT Minor PSM 0 Input B0 Failed 2021-05-18 22:06:34 CDT Minor PSM 0 Input B1 Failed 2021-05-18 22:06:34 CDT Minor PSM 0 Redundant Feed Failed
The JNP10K-PWR-DC2 power supply provides two power supplies in a single housing that accepts either 60 A or 80 A using four redundant input power feeds. The two internal power supplies (PS_0 and PS_1) each have redundant input feeds: A0 and/or B0 for PS_0 and A1 and/or B1 for PS_1.
user@chassis> show chassis power
Chassis Power Voltage(V) Power(W) Total Input Power 5592 PSM 0 PS0 51 960 A0 52 B0 51 PS1 51 960 A1 51 B1 52 Output 12.53 1774.98 ( 80A at 12V)
PSM0 is still functioning well if PS0/PS1 only has single feed, but the following alarm might be generated on the router:
Chassis Power Voltage(V) Power(W) Total Input Power 4416 PSM 0 State: Online PS0 50 360 A0 51 <-- B0 feed is not present PS1 50 360 A1 51 <-- B1 feed is not present Output 12.29 692.37 (80A input select)
Alarms:
2021-05-18 22:06:34 CDT Minor PSM 0 Input B0 Failed <-- PS0 for PSM0 does not have B0 2021-05-18 22:06:34 CDT Minor PSM 0 Input B1 Failed <-- PS1 for PSM0 does not have B1 2021-05-18 22:06:34 CDT Minor PSM 0 Redundant Feed Failed
These alarms are not service impacting. To clear them, connect both input power feeds for each PS. For instructions on how to connect the input feeds, refer to the technical documentation on Install a JNP10K-PWR-DC2 Power Supply
After all feeds are connected, A0, B0, A1, and B1 should be seen under PSM 0:
2021-07-06: Corrected the PTX device name.