cat6500 power supply 1 fail cause circuit breaker to trip

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Jun 7th, 2007
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hi,


appreciate if someone could advise if you have encountered this before?


cat6500 is installed with power supply 1 & 2. Power supply 1 failed causes the circuit breaker to trip and cat6500 goes down. is this possible?


thanks.

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balajitvk Thu, 06/07/2007 - 08:42
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Hi Christina,


Whether it is AC or DC power supply and whether both supplies are from single source or Dual Source.....


If it is from single source, the short circuit one power supply might increase the load which may cause second supply also to go down.


Share some logs to decide on the same...


Rgs

neo_christina Wed, 06/13/2007 - 04:35
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it is AC power supply from single source.


only have the following info:


switch#sh power

system power redundancy mode = redundant

system power redundancy operationally = non-redundant

system power total = 2771.16 Watts (65.98 Amps @ 42V)

system power used = 1931.16 Watts (45.98 Amps @ 42V)

system power available = 840.00 Watts (20.00 Amps @ 42V)

Power-Capacity PS-Fan Output Oper

PS Type Watts A @42V Status Status State

---- ------------------ ------- ------ ------ ------ -----

1 WS-CAC-3000W 1171.38 27.89 - - off

2 WS-CAC-3000W 2771.16 65.98 OK OK on

Pwr-Requested Pwr-Allocated Admin Oper

Slot Card-Type Watts A @42V Watts A @42V State State

---- ------------------ ------- ------ ------- ------ ----- -----

--More--

Inline Inline Inline

Pwr-Requested Pwr-Allocated Local-Pwr-Pool

Slot Card-Type Watts A @42V Watts A @42V Watts A @42V

---- ------------------ ------- ------ ------- ------ ------- ------

4 WS-F6K-PWR 189.00 4.50 189.00 4.50 34.44 0.82

5 WS-F6K-PWR 176.40 4.20 176.40 4.20 34.44 0.82

6 WS-F6K-PWR 252.00 6.00 252.00 6.00 34.44 0.82

7 WS-F6K-PWR 207.90 4.95 207.90 4.95 34.44 0.82

8 WS-F6K-PWR 63.00 1.50 63.00 1.50 34.44 0.82

switch#

Ivan Villagomez Thu, 06/07/2007 - 09:04
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DO you have the specs for the power supply, there are diff power supplies, The 6500 with only 1 6000w power supply can fully operate.


Maybe your problem is that your Power Supply cant handle the load.

neo_christina Wed, 06/13/2007 - 04:38
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yes, after the power trip, detected one of the power supply failed and cat6500 is powered using the other power supply.


switch#sh power

system power redundancy mode = redundant

system power redundancy operationally = non-redundant

system power total = 2771.16 Watts (65.98 Amps @ 42V)

system power used = 1931.16 Watts (45.98 Amps @ 42V)

system power available = 840.00 Watts (20.00 Amps @ 42V)

Power-Capacity PS-Fan Output Oper

PS Type Watts A @42V Status Status State

---- ------------------ ------- ------ ------ ------ -----

1 WS-CAC-3000W 1171.38 27.89 - - off

2 WS-CAC-3000W 2771.16 65.98 OK OK on

Pwr-Requested Pwr-Allocated Admin Oper

Slot Card-Type Watts A @42V Watts A @42V State State

---- ------------------ ------- ------ ------- ------ ----- -----

Inline Inline Inline

Pwr-Requested Pwr-Allocated Local-Pwr-Pool

Slot Card-Type Watts A @42V Watts A @42V Watts A @42V

---- ------------------ ------- ------ ------- ------ ------- ------

4 WS-F6K-PWR 189.00 4.50 189.00 4.50 34.44 0.82

5 WS-F6K-PWR 176.40 4.20 176.40 4.20 34.44 0.82

6 WS-F6K-PWR 252.00 6.00 252.00 6.00 34.44 0.82

7 WS-F6K-PWR 207.90 4.95 207.90 4.95 34.44 0.82

8 WS-F6K-PWR 63.00 1.50 63.00 1.50 34.44 0.82

switch#

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