Hi,
I have a Cisco 4503 which will without fail crash when power is lost to one power supply.
All of the LEDs will illuminate on the switch in red/alarm state and it will stop passing traffic.
The failure scenarios are as follows:
- Run on any one power supply - OK
- Run on any one power supply and then power on second power supply while running - Crash
- Run on both power supplies and lose power to any second power supply while running - Crash
Obviously, this is not a very good situation as there is no power redundancy!
I haven't been able to confirm any console messages when this occurs.
The device is running IOS 15.0(2)SG6.
#sh module
Chassis Type : WS-C4503
Power consumed by backplane : 0 Watts
Mod Ports Card Type Model Serial No.
---+-----+--------------------------------------+------------------+-----------
1 2 Supervisor IV 1000BaseX (GBIC) WS-X4515
2 6 SFP, 10/100/1000BaseT (RJ45)V, Cisco/I WS-X4506-GB-T
3 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45
There is sufficient capacity to run on one power supply:
Power Fan Inline
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------- -------
PS1 PWR-C45-1000AC AC 1000W good good n.a.
PS2 PWR-C45-1000AC AC 1000W good good n.a.
Power supplies needed by system : 1
Power supplies currently available : 2
Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 230 1050
Inline Power (-50V) 0 0
Backplane Power (3.3V) 0 40
---------------------- ---- ---------
Total 230 1090
The power supplies are configured in redundancy mode:
#sh run | I power
power redundancy-mode redundant
Any ideas? Known bugs?
Thanks
